I get an error when I am trying to insert records using prepared statement:
Registration Servlet INSIDE try block:
Printing USER Values
====================
john
smith
john#gmail.com
john
Connection is: null
username: rth
password: rth
driver: oracle.jdbc.OracleDriver
url is: jdbc:oracle:thin:#localhost:1521:orcl
####Record insertion error in Registration DAO####
java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.RTH.commons.DBConnection.getConnection(DBConnection.java:42)
at com.RTH.DAO.RegistrationDAO.insert(RegistrationDAO.java:29)
at com.RTH.Registration.RegistrationServlet.doPost(RegistrationServlet.java:43)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:#localhost:1521:orcl
at java.sql.DriverManager.getConnection(DriverManager.java:689)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at com.RTH.commons.DBConnection.getConnection(DBConnection.java:49)
at com.RTH.DAO.RegistrationDAO.insert(RegistrationDAO.java:29)
at com.RTH.Registration.RegistrationServlet.doPost(RegistrationServlet.java:43)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
java.lang.NullPointerException
at com.RTH.DAO.RegistrationDAO.insert(RegistrationDAO.java:31)
at com.RTH.Registration.RegistrationServlet.doPost(RegistrationServlet.java:43)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
I am able to print connection details and also the properties file:
public class DBConnection {
public static Connection getConnection() throws IOException, ClassNotFoundException, SQLException
{
Properties props = new Properties();
props.load(DBConnection.class.getResourceAsStream("DBDetails.properties"));
String username = props.getProperty("dbusername");
String password = props.getProperty("dbpassword");
String driver = props.getProperty("driver");
String url = props.getProperty("url");
Class.forName(driver);
Connection con = DriverManager.getConnection(url, username, password);
System.out.println("Connection is: " + con);
System.out.println("username: " + username);;
System.out.println("password: " + password);;
System.out.println("driver: "+ driver);;
System.out.println("url is: " + url);;
return con;
}
public static void main(String[] args) throws IOException, ClassNotFoundException, SQLException {
DBConnection.getConnection();
}
}
RegistrationDao file:
public class RegistrationDAO {
public void insert(User user) {
try {
System.out.println("Printing USER Values");
System.out.println("====================");
System.out.println(user.getFirstName());
System.out.println(user.getLastName());
System.out.println(user.getEmail());
System.out.println(user.getPassword());
Connection con = DBConnection.getConnection();
String query = "insert into TBL_USER(USR_FIRST_NAME,USR_LST_NAME,USR_PRIMARY_EMAIL,USR_PASSWORD) values(?,?,?,?)";
PreparedStatement pst = con.prepareStatement(query);
pst.setString(1, user.getFirstName()); //prints value
pst.setString(2, user.getLastName()); //prints value
pst.setString(3, user.getEmail()); //prints value
pst.setString(4, user.getPassword()); //prints value
pst.executeUpdate();
} catch (Exception e) {
System.out.println("####Record insertion error in Registration DAO####");
e.printStackTrace();
}
}
}
Properties file:
dbusername=rth
dbpassword=rth
driver=oracle.jdbc.driver.OracleDriver
url=jdbc:oracle:thin:#localhost:1521:orcl
I have checked that the database username and password is not expired and still working. Connection test succeeded. All the column types are varchar2 200 bytes. I am not sure why it is still throwing error.
You are able to see the sysout statement as you must be running the program in your IDE where the properties file is in your classpath. Your properties file is not in your classpath when you deploy the app.
You can change the code as :
props.load(DBConnection.class.getResourceAsStream("../conf/DBDetails.properties"));
Create a directory 'conf' || to the lib folder containing your code(jars) and try running it.
The problem occurs a lot earlier in this very first line of your exception:
props.load(DBConnection.class.getResourceAsStream("DBDetails.properties"));
That means: the file "DBDetails.properties" is obviously not in the current directory nor in one of the class path settings.
Check, where the file is located and set the classpath accordingly or move it in to the right place.
EDIT AFTER UPDATE OF Q
Same with the oracle driver. The oracle driver class is not loaded, probably it's not on the class path as well - or even not present at all (what I would bet for, as this needs to be downloaded/installed explicitly from Oracle)
java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
Following these steps resolved my issue:
Removed ojdbc6-11.1.0.7.0.jar from the class path and added
ojdbc6.jar
Changed the driver name from:
driver=oracle.jdbc.OracleDriver to driver=oracle.jdbc.driver.OracleDriver
Pasted a ojdbc6.jar file to
apache-tomcat-7.0.35-windows-x86\apache-tomcat-7.0.35\lib folder
And it worked!!
Related
I got Null pointer exception
"java.lang.NullPointerException"
refer below code for reference
Everything should be fine but not able to update data to the database(mySql)
<% try{
//reading request parameters
String projectName=request.getParameter("projectName").trim();
String status=request.getParameter("status").trim();
//String user = session.getAttribute("user").toString();
Connection connection = DAO.getConnection();
PreparedStatement pstmt = connection.prepareStatement("update project set status=? where projectName=?");
pstmt.setString(1,status);
pstmt.executeUpdate();
out.println("<h2 style='color:green'>Project Status has been updated</h2>");
}
catch(Exception ex)
{
ex.printStackTrace();
out.println("<h2 style='color:red'>Please login to update your Status</h2>");
}
%>
Not able to update because of exception
refer below
Please anyone suggest me how to solve this exception...
java.lang.NullPointerException at org.apache.jsp.MyWorkPanelAction_jsp._jspService(MyWorkPanelAction_jsp.java:93)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
You missed the projectName...Try the code below
try{
//reading request parameters
String projectName=request.getParameter("projectName").trim();
String status=request.getParameter("status").trim();
//String user = session.getAttribute("user").toString();
Connection connection = DAO.getConnection();
PreparedStatement pstmt = connection.prepareStatement("update project set status=? where projectName=?");
pstmt.setString(1,status);
pstmt.setString(2,projectName); //Try this
pstmt.executeUpdate();
out.println("<h2 style='color:green'>Project Status has been updated</h2>");
}
catch(Exception ex)
{
ex.printStackTrace();
out.println("<h2 style='color:red'>Please login to update your Status</h2>");
}
This is the error I get while I try to cast my LONGTEXT object from mysql back to my ProcessInputs java object using FlexJSON.
java.lang.ClassCastException: java.util.HashMap cannot be cast to org.juzzy.server.ProcessInputs
at org.juzzy.server.FLSDAO.RetrieveFLSFromDatabase(FLSDAO.java:68)
at org.juzzy.client.CreateFLS.doPost(CreateFLS.java:48)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
This is what my ProcessInput class looks like
public class ProcessInputs {
//inputs contain names of all the inputs and their objects
Map<String,Input> inputs= new LinkedHashMap<String,Input>();
Map<String,Output> outputs= new HashMap<String,Output>();
Map<String,Object> fuzzyTerms=new HashMap<String,Object>();
Map<String,String> fuzzyTermMapper=new HashMap<String,String>();
ArrayList<T1_Antecedent> antecedentArrayList;
String outputxml;
T1_Rulebase rulebase = new T1_Rulebase(1);
//getters,setters, constructor and functions
}
My retrieval code in FLEXJSON:
while(rs.next()){
String jsonInString= rs.getString("fls");
JSONDeserializer<ProcessInputs> der = new JSONDeserializer<ProcessInputs>();
ProcessInputs fls = der.deserialize(jsonInString);
}
This is how the serialization happens:
public boolean InsertFLStoDatabase(ProcessInputs object, String xml) throws IOException {
Connection connection = DatabaseConnect.getConnection();
String query = "insert into fls_systems (fls, xml) values (?,?)";
try {
JSONSerializer ser = new JSONSerializer();
String jsonInString = ser.deepSerialize(object);
PreparedStatement ps = connection.prepareStatement(query);
ps.setString(1, jsonInString);
From your exception this should work (i guess...):
while(rs.next()){
String jsonInString= rs.getString("fls");
JSONDeserializer<ProcessInputs> der = new JSONDeserializer<ProcessInputs>();
// exception is here, right? der.deserialize(String) is giving you a Map!!
Map<String,Input> fls = der.deserialize(jsonInString);
}
Don't have a deep knowledge of flexjson, but I'm not casting like
Map<String,Input> fls = (Map<String,Input>) der.deserialize(jsonInString);
Because of the message:
java.util.HashMap cannot be cast to org.juzzy.server.ProcessInputs
And because API:
Deserialize the given json formatted input into a Java object.
But may be a possibility if first option does not work.
java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/test2
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.room302.util.DBConnectionUtil.getConnection(DBConnectionUtil.java:32)
at com.room302.dao.roomDAO.addexpense(roomDAO.java:26)
at com.room302.servlet.Navigator.doPost(Navigator.java:69)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1008)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
My Util file is as follows:
public class DBConnectionUtil
{
private static final String USERNAME="root";
private static final String PASSWORD="1234";
private static final String URL="jdbc:mysql://localhost:3306/test2";
private static final String DRIVER_NAME="mysql";
private static Connection conn=null;
static
{
try
{
System.out.println("searching for driver");
Class.forName(DRIVER_NAME);
}
catch(ClassNotFoundException cnfe)
{
}
}
public static Connection getConnection() throws SQLException
{
conn = DriverManager.getConnection(URL,USERNAME,PASSWORD);
return conn;
}
public static void closeConnection(Connection conn)
{
if(conn!=null)
{
try
{
conn.close();
}
catch (Exception e)
{
}
}
}
}
I have put MySQL connector in the buildpath and also in lib folder of web-inf.
Why am I still getting this error?
You need to load the com.mysql.jdbc.Driver driver class.
private static final String DRIVER_NAME="com.mysql.jdbc.Driver";
Look at the official documentation:
The name of the class that implements java.sql.Driver in MySQL Connector/J is com.mysql.jdbc.Driver. The org.gjt.mm.mysql.Driver class name is also usable for backward compatibility with MM.MySQL, the predecessor of Connector/J. Use this class name when registering the driver, or when otherwise configuring software to use MySQL Connector/J.
This is a fairly old thread so I just though I should add that "com.mysql.jdbc.Driver" has been deprecated so you need to use "com.mysql.cj.jdbc.Driver"
This code below throws IllegalStateException: Cannot forward after response has been committed :
private void doRequest(HttpServletRequest request) throws IOException, ServletException {
CallableStatement stmt = null;
ResultSet rs = null;
String someString;
try {
this.connectDB();
stmt = this.conn.prepareCall("{call sp_SomeSP1(?)}");
stmt.setLong(1, someFunc());
rs = stmt.executeQuery();
while (rs.next()) {
if (rs.getInt(1)==someOtherFunc()) {
someString = rs.getString(2);
break;
}
}
stmt = conn.prepareCall("{call sp_someSP(?, ?)}");
stmt.setLong(1, someFunc());
stmt.setTimestamp(2, new Timestamp(getFrom().getTime()));
rs = stmt.executeQuery();
if (rs.next()) {
lastUpdated = rs.getTimestamp("LastUpdated");
}
request.setAttribute("lastUpdated", lastUpdated);
LOGGER.debug("Forwarding to view...");
getServletContext().getRequestDispatcher("/SomeJSP.jsp").forward(this.request, this.response);
} catch (NamingException e) {
LOGGER.error("Database connection lookup failed", e);
sendError("Server Error");
} catch (SQLException e) {
LOGGER.error("Query failed", e);
sendError("Server Error");
} catch (IllegalStateException e) {
LOGGER.error("View failed", e);
} finally {
try {
if (rs!=null) rs.close();
} catch (NullPointerException e) {
LOGGER.error("Result set closing failed", e);
} catch (SQLException e) {
LOGGER.error("Result set closing failed", e);
}
try {
if (stmt!=null) stmt.close();
} catch (NullPointerException e) {
LOGGER.error("Statement closing failed", e);
} catch (SQLException e) {
LOGGER.error("Statement closing failed", e);
}
try {
this.closeDB();
} catch (NullPointerException e) {
LOGGER.error("Database connection closing failed", e);
} catch (SQLException e) {
LOGGER.error("Database connection closing failed", e);
}
}
In the JSP page there is this code so the page will refresh:
<meta http-equiv="Refresh" content="10">
The catch is that, the error does not happen most of the time, only when I access the Servlet that forward to the JSP, in multiple browser or tabs, and still not always, there is just a time that the error will hit.
What could be the problem?
Stacktrace:
java.lang.IllegalStateException: Cannot forward after response has been committed
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:339)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doRequest(CallDetailsServlet.java:103)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doGet(CallDetailsServlet.java:162)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:84)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Dec 20, 2012 5:04:58 PM org.apache.jasper.runtime.JspFactoryImpl internalGetPageContext
SEVERE: Exception initializing page context
java.lang.IllegalStateException: Page needs a session and none is available
at org.apache.jasper.runtime.PageContextImpl._initialize(PageContextImpl.java:148)
at org.apache.jasper.runtime.PageContextImpl.initialize(PageContextImpl.java:125)
at org.apache.jasper.runtime.JspFactoryImpl.internalGetPageContext(JspFactoryImpl.java:112)
at org.apache.jasper.runtime.JspFactoryImpl.getPageContext(JspFactoryImpl.java:65)
at org.apache.jsp.error_jsp._jspService(error_jsp.java:53)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
at com.mycompany.mywebapp.servlet.Servlet.sendError(Servlet.java:56)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doRequest(CallDetailsServlet.java:57)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doGet(CallDetailsServlet.java:162)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:84)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
12 20, 12 5:05:14 PM com.mycompany.mywebapp.servlet.CallDetailsServlet doRequest
ERROR: View failed
java.lang.IllegalStateException: Cannot forward after response has been committed
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:339)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doRequest(CallDetailsServlet.java:103)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doGet(CallDetailsServlet.java:162)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:84)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
12 20, 12 5:05:15 PM com.mycompany.mywebapp.servlet.CallDetailsServlet doRequest
ERROR: View failed
java.lang.IllegalStateException: Cannot forward after response has been committed
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:339)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doRequest(CallDetailsServlet.java:103)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doGet(CallDetailsServlet.java:162)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:84)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Dec 20, 2012 5:05:16 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.catalina.connector.Request.notifyAttributeAssigned(Request.java:1552)
at org.apache.catalina.connector.Request.access$000(Request.java:105)
at org.apache.catalina.connector.Request$3.set(Request.java:3342)
at org.apache.catalina.connector.Request.setAttribute(Request.java:1504)
at org.apache.catalina.connector.RequestFacade.setAttribute(RequestFacade.java:541)
at org.apache.catalina.core.ApplicationHttpRequest.setAttribute(ApplicationHttpRequest.java:281)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:286)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doRequest(CallDetailsServlet.java:103)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doGet(CallDetailsServlet.java:162)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:84)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Dec 20, 2012 5:05:16 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [callDetailsServlet] in context with path [/WebCharts] threw exception
java.lang.NullPointerException
at org.apache.catalina.connector.Request.notifyAttributeAssigned(Request.java:1552)
at org.apache.catalina.connector.Request.access$000(Request.java:105)
at org.apache.catalina.connector.Request$3.set(Request.java:3342)
at org.apache.catalina.connector.Request.setAttribute(Request.java:1504)
at org.apache.catalina.connector.RequestFacade.setAttribute(RequestFacade.java:541)
at org.apache.catalina.core.ApplicationHttpRequest.setAttribute(ApplicationHttpRequest.java:281)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:286)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doRequest(CallDetailsServlet.java:103)
at com.mycompany.mywebapp.servlet.CallDetailsServlet.doGet(CallDetailsServlet.java:162)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:84)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
doGet:
#Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
super.doGet(request, response);
doRequest(request);
}
Your doGet() is broken. You should remove the super.doGet(request, response); line. It's namely by default returning a "HTTP 405 Method Not Allowed" error page which effectively commits your response.
#Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doRequest(request);
}
Do not call the super.doXxx() method in servlets. They return by default a HTTP 405 error indicating that the method is not available (as per the Template Method pattern).
See also:
java.lang.IllegalStateException: Cannot (forward | sendRedirect | create session) after response has been committed
HTTP Status 405 - HTTP method GET is not supported by this URL
I've just made the switch from netbeans to the springsource tool suite and I'm having one problem:
I've downloaded the mysql-connector-java-5.1.20-bin.jar added the file to the libraries but still I get this warning:
java.lang.ClassNotFoundException: com.mysql.jdbc
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1711)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:186)
at database.Database.checkConnection(Database.java:20)
at database.UserDatabase.getUser(UserDatabase.java:114)
at register.processRequest(register.java:30)
at register.doGet(register.java:74)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
java.lang.NullPointerException
at register.processRequest(register.java:31)
at register.doGet(register.java:74)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
jun 06, 2012 7:59:12 PM org.apache.catalina.core.StandardContext reload
INFO: Reloading Context with name [/Burgerdemocratie] has started
jun 06, 2012 7:59:12 PM org.apache.catalina.core.ApplicationContext log
INFO: Destroying Spring FrameworkServlet 'appServlet'
This is my connection code think it's pretty standard:
public class Database {
protected static Connection connection = null;
public static boolean checkConnection() throws Exception {
if (connection == null || connection.isClosed()) {
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/2012gwtgr2";
String login = "gwx2";
String pass = "VCxxxR";
try {
Class.forName(driver).newInstance();
connection = DriverManager.getConnection(url, login, pass);
} catch (Exception ex) {
ex.printStackTrace();
}
}
if (connection == null || connection.isClosed()) {
return false;
} else {
return true;
}
}
}
Can someone help me please?
Kind regards,
If you are having a web project then it should be placed under the WebContent/WEB-INF/lib folder and add it to your libraries also. This should fix the problem.
If you are having a web project then it should be placed under the WebContent/WEB-INF/lib folder and add it to your libraries also. This should fix the problem.
try this!