I am developing an application , I want to configure the log4j as I want separate logging to be done for my project also so that a separate log file is created .. below is the pic of my project please click on the url to see it..snapshot of the project structure
Now here is the servlet
package com.saral;
import java.io.IOException;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
* Servlet implementation class First
*/
//#WebServlet("/First")
public class MyServlet extends HttpServlet
{
private static final long serialVersionUID = 1L;
static final Logger logger = Logger.getLogger(MyServlet.class);
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
PropertyConfigurator.configure("log4j.properties");
logger.info("before---->");
// TODO Auto-generated method stub
String name=request.getParameter("txtName");
response.setContentType("text/html");
PrintWriter out=response.getWriter();
out.println("Hello,"+name);
out.println("<br> this output is generated by a simple servlet.");
out.println("Total Number of users logged in--->"+request.getSession().getServletContext().getAttribute("sessionCount"));
out.close();
}}
and the structure of the web.xml is
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>FirstDemo</display-name>
<servlet>
<servlet-name>hello</servlet-name>
<servlet-class>com.saral.MyServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>hello</servlet-name>
<url-pattern>/helloServlet</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>home.html</welcome-file>
</welcome-file-list>
<listener>
<listener-class>com.saral.SessionCounter</listener-class>
</listener>
</web-app>
but upon running the application on tomcat it shows the following error..
INFO: Server startup in 888 ms
log4j:ERROR Could not read configuration file [log4j.properties].
java.io.FileNotFoundException: log4j.properties (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileInputStream.<init>(Unknown Source)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:306)
at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:324)
at com.saral.MyServlet.doGet(MyServlet.java:29)
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 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$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
log4j:ERROR Ignoring configuration file [log4j.properties].
Please advise how to generate the separate logs, please advise
This means the log4j.properties file is not in your classpath. You need to put it under the "src" folder and redeploy the application to tomcat.
Related
Why isn't a MultipartConfig annotation processor working on the annotated class? When I build my Java project with Gradle I get this warning:
No processor claimed any of these annotations: javax.servlet.annotation.MultipartConfig,javax.servlet.annotation.WebServlet
And when I send a file to that servlet from a form I get
HTTP ERROR 500
Problem accessing /historyUpload/upload. Reason:
Server Error
Caused by:
java.lang.IllegalStateException: No multipart config for servlet
at org.eclipse.jetty.server.Request.getParts(Request.java:2303)
at org.eclipse.jetty.server.Request.getParts(Request.java:2290)
at org.eclipse.jetty.server.Request.getPart(Request.java:2279)
at javax.servlet.http.HttpServletRequestWrapper.getPart(HttpServletRequestWrapper.java:386)
at com.mycom.UploadServlet.doPost(UploadServlet.java:32)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
[...]
But I have javax.servlet-api-3.1.0.jar in my build.gradle - my project module includes several other HttpServlet classes that build and execute OK against it. That JAR does include javax.servlet.annotation.MultipartConfig .
UploadServlet.java :
package com.mycom.uploadservlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;
#SuppressWarnings("serial")
#MultipartConfig(location="/tmp/upload", fileSizeThreshold=1024*1024, maxFileSize=1024*1024*50)
public class UploadServlet extends HttpServlet
{
#Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
{
resp.setContentType("text/plain");
PrintWriter out = resp.getWriter();
out.printf("Got part: name=%s, size=%d%n",req.getPart("file").getName(), req.getPart("file").getSize());
int i=0;
for(Part part: req.getParts())
{
out.printf("Got part: name=%s, size=%d%n",part.getName(), part.getSize());
part.write(String.format("part-%02d.dat",i++));
}
}
}
The problem was that I defined a <servlet> configuration in web.xml , that overrides the #WebServlet() annotation on the class UploadServlet. I didn't use an #WebServlet annotation, because I had the <servlet> configuration in web.xml. But that overriding also overrides any #MultipartConfig annotation on the class UploadServlet, even if no <multipart-config> block is included in the <servlet> block. So to process a form of enctype="multipart/form-data" either the <servlet> block in web.xml must include a <multipart-config> block, or no <servlet> block in web.xml and instead annotate the class with #MultipartConfig() (and so also #WebServlet).
<servlet>
<servlet-name>UploadServlet</servlet-name>
<servlet-class>com.mycom.UploadServlet</servlet-class>
<multipart-config>
<max-file-size>10485760</max-file-size>
<max-request-size>20971520</max-request-size>
<file-size-threshold>5242880</file-size-threshold>
</multipart-config>
</servlet>
I'm new to Apache Tomcat and I'm trying to run a simple servlet program but it says class not found.
Java file:
package com.mkyong;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ServletDemo1 extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<body>");
out.println("<h1>Hello Servlet Get</h1>");
out.println("</body>");
out.println("</html>");
}
}
Deployment file:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>myServlet</servlet-name>
<servlet-class>com.mkyong.ServletDemo1</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>myServlet</servlet-name>
<url-pattern>/Demo1</url-pattern>
</servlet-mapping>
</web-app>
Logs:
java.lang.NoClassDefFoundError: com/mkyong/ServletDemo1 (wrong name: ServletDemo1)
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:800)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2904)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1173)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1681)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:461)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
java.lang.Thread.run(Thread.java:745)
Solved it. I needed an additional jar file that was to be added to the classpath i did and it worked thanks so much.
You .class (remember, .class) file must be present in Tomcat's classpath. Check that.
Tomcat startup.bat calls catalina.bat where classpath is set.
Catalina.bat has got a line...
echo Using CLASSPATH: "%CLASSPATH%"
This will print classpath on the command prompt window from which you called startup.bat/.sh. Use this and search for your file.
If it is not found, your IDE project configuration is not setup correctly to generate .class and put it in required location, e.g. in Maven, it should go to target/classes.
If issue is after deploying war, unzip war and check classes folder. If not found, your build tool is not setup correctly.
I see most of similar problems and try most solutions, but nothing has worked for me!
I am completely new in Java EE and this is my first servlet.
This is my servlet that placed in: C:\tomcat\webapps\jspbook\WEB-INF\classes
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class HelloWorld extends HttpServlet {
#Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title> hello World Title </title>");
out.println("</head>");
out.println("<body>");
out.println("<h1> Hello To World in body!</h1>");
out.println("</body>");
out.println("</html>");
}
}
And this is web.xml file in C:\tomcat\webapps\jspbook\WEB-INF
<servlet>
<servlet-name>HelloWorld</servlet-name>
<servlet-class>HelloWorld</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloWorld</servlet-name>
<url-pattern>/HelloWorld</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file> welcome.html </welcome-file>
</welcome-file-list>
</web-app>
Now, when i restart tomcat, and try http://127.0.0.1:8080/jspbook/HelloWorld
At first time Time this is my first error:
type Exception report
message Error instantiating servlet class HelloWorld
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Error instantiating servlet class HelloWorld
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2462)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2451)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:722)
root cause
java.lang.ClassNotFoundException: HelloWorld
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2462)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2451)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:722)
And when i reload the page, this is my second error:
HTTP Status 404 -
type Status report
message
description The requested resource is not available.
What is wrong with my code?
UPDATE:
I create a package and named it com.jspbook and placed it in here C:\tomcat\webapps\jspbook\WEB-INF\classes\com\jspbook\HelloWorld.java
package com.jspbook;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class HelloWorld extends HttpServlet {
#Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title> hello World Title </title>");
out.println("</head>");
out.println("<body>");
out.println("<h1> Hello To World in body! </h1>");
out.println("</body>");
out.println("</html>");
}
}
web.xml is here: C:\tomcat\webapps\jspbook\WEB-INF\web.xml
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" version="2.4">
<servlet>
<servlet-name>HelloWorld</servlet-name>
<servlet-class>com.jspbook.HelloWorld</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloWorld</servlet-name>
<url-pattern>/HelloWorld</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file> welcome.html </welcome-file>
</welcome-file-list>
</web-app>
I try http://127.0.0.1:8080/jspbook/HelloWorld but the same Error appear!
(There is no compiled class file at all)
Please put the servlet in a package. The container is unable to load classes from default package.
When I run the jsp on the tomcat server and it runs ok, but when I click submit it throws the following error, I have checked over everything and I am not sure where to go from here because it seems like it should work, any help would be much appreciated, Thank you.
Error Stack Trace:
SEVERE: Allocate exception for servlet RegistrationServlet
java.lang.ClassNotFoundException: logon.RegistrationServlet.java
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:529)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:511)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:139)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1148)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:864)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:134)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns /javaee /web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>RegistrationTest</display-name>
<servlet>
<display-name>RegistrationServlet</display-name>
<servlet-name>RegistrationServlet</servlet-name>
<servlet-class>logon.RegistrationServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>RegistrationServlet</servlet-name>
<url-pattern>/RegistrationServlet</url-pattern>
</servlet-mapping>
</web-app>
The JSP page:
<h2>Signup Details</h2>
<form name="actionForm" action="RegistrationServlet" method ="post">
<br/>Username:<input type="text" name="name">
<br/>Password:<input type="password" name="password">
<br/>Email:<input type="text" name="email">
<br/><input type="submit" value="Submit">
</form>
The Servlet:
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class RegistrationServlet
*/
#WebServlet("/RegistrationServlet")
public class RegistrationServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public RegistrationServlet() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try{
System.out.println("In the registration Servlet");
User user = new User();
user.setName(request.getParameter("name"));
user.setPassword(request.getParameter("password"));
user.setEmail(request.getParameter("email"));
RegisterUser.addUser(user);
//response.sendRedirect("welcome.jsp");
} catch (Throwable exc)
{
System.out.println(exc);
}
}
}
For anybody that has a similar problem in the future, after cleaning the project, ensure that the build automatically box is checked under the project drop down menu as this is required to rebuild after clean, mine was unchecked by default for some reason.
Also I made a small error in the code, I used annotations (#webservlet) in my servlet and I also added the servlet to my web.xml which caused a conflict. This is now done automatically with annotations.
I also got the same exception and resolved just by putting full qualified calssname in the web.xml fle.
$fully qualified class name$
I am getting javax.servlet.ServletException: Failed to load application class: com.example.App
when i try to run it on local Tomcat 7 application server.
This is stacktrace : (full)
javax.servlet.ServletException: Failed to load application class: com.example.App
com.vaadin.terminal.gwt.server.ApplicationServlet.init(ApplicationServlet.java:71)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
java.lang.Thread.run(Thread.java:722)
This is my web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<servlet>
<servlet-name>ApplicationServlet</servlet-name>
<servlet-class>com.vaadin.terminal.gwt.server.ApplicationServlet</servlet-class>
<init-param>
<param-name>application</param-name>
<param-value>com.example.App</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>ApplicationServlet</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
App.class is in WEB-INF/classes/com/example/ :
package com.example;
import com.vaadin.Application;
import com.vaadin.ui.Label;
import com.vaadin.ui.Window;
public class App extends Application {
#Override
public void init() {
Window main = new Window("Hello");
setMainWindow(main);
main.addComponent(new Label("Hello, world!"));
}
}
What have I done wrong?
Can you give me any manual for step-by-step deployment?
P.S. updated.
Is the vaadin-xx.yy.zz.jar in WEB-INF/lib?
It needs to be.