I am studying springmvc. When I use #RequestMapping(value="/helloWorld", headers = "content-type=text/*") and connect to http://localhost:8080/SpringMVC_10100/helloWorld, the following is output in the console:
WARN
org.springframework.web.servlet.PageNotFound
- No matching handler method found for servlet request: path '/helloWorld',
method 'GET', parameters
map[[empty]]
My code is:
#Controller
public class HelloWordController {
private Logger logger = LoggerFactory.getLogger(HelloWordController.class);
#RequestMapping(value="/helloWorld", headers = "content-type=text/*")
public ModelAndView helloWorld() {
logger.debug("jin ru le");
logger.info("The helloWorld() method is use");
ModelAndView view = new ModelAndView();
view.setViewName("/helloworld");
return view;
}
}
web.xml is
<servlet>
<description>This is Spring MVC DispatcherServlet</description>
<servlet-name>SpringMVC DispatchServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<description>SpringContext</description>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC DispatchServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
Why?
Its most likely the case that /helloworld is not inside the path configured for your dispatcher servlet
e.g. If i have a servlet configured like so:
<servlet>
<servlet-name>BMA</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>BMA</servlet-name>
<url-pattern>/bma/*</url-pattern>
</servlet-mapping>
And i have a controller configured like so:
#RequestMapping(value = "/planner/plan/{planId}/delete", method = RequestMethod.GET)
public ModelAndView deletePlanConfirm(HttpServletRequest request,
#PathVariable("planId") Long planId) {}
Then the request in browsder would be:
http://localhost:8080/bma/planner/plan/1223/delete
Edit:
Also if you have content-type header narrowing on your handler, make sure that content-type haeder is sent in your request.
In the below annotation remove the headers:
#RequestMapping(value="/helloWorld", headers = "content-type=text/*")
to:
#RequestMapping(value="/helloWorld", method = RequestMethod.GET)
or to:
#RequestMapping(value="/helloWorld")
should make it work.
Related
I'm following the demo in https://www.javatpoint.com/spring-mvc-tutorial. After running the demo on the tomcat server,I visited the url "http://localhost:8080/webTest1_war_exploded/",it seems the request is not handled by springmvc controller.
web.xml:
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
Here is the controller code:
#Controller
public class HelloController {
public HelloController() {
}
#RequestMapping({"/"})
public String display() {
System.out.println("yes");
return "index";
}
}
after I visited the url: "http://localhost:8080/webTest1_war_exploded/", the console does not print "yes".
Can someone explain it to me?
Just try to replace
#RequestMapping({"/"})
with
#RequestMapping("/")
I have a small project at my university. I would like to use a REST webserver (on GlassFish) with Jersey.
I tried replace the MOXy to Jackson but I could not do that.
I have a modell class and it is contains few variable. The output is correct JSON or XML. But I want to put Transient annotation to some variable.
The javax.xml.bind.annotation.XmlTransien annotation is not working. I see the variable in the output response.
Here is my modell class:
public class Xyz {
private String a = "value";
private int b = 3;
#XmlTransient
private List<int> list = new LinkedList<>();
// get, set ..
}
And my service class is:
#Path("myresource")
public class MyResource {
#GET
#Produces(MediaType.TEXT_PLAIN)
public String getIt() {
return "Got it!";
}
#GET
#Produces("application/json")
#Path("/json")
public Response getJSON() {
return Response.ok(new Xyz()).build();
}
#GET
#Produces("application/xml")
#Path("/xml")
public Response getXML() {
return Response.ok(new Xyz()).build();
}
}
The web.xml:
<servlet>
<servlet-name>Jersey Web Application</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.example</param-value>
</init-param>
<init-param>
<param-name>jersey.config.server.provider.classnames</param-name>
<param-value>org.glassfish.jersey.moxy.json.MoxyFeature</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jersey Web Application</servlet-name>
<url-pattern>/webapi/*</url-pattern>
</servlet-mapping>
Where is the problem? Or how to replace with Jackson? I want to use GlassFish.
Thank you very much!
First of all I'm new to Spring and tried my best to get this working. So this is my question.
I have a spring MVC project which is supposed to receive a request payload (JSON request) and display the payload body on a webpage. Please see my project content and the controller class below
#Controller
public class CallbackPayloadController {
public CallbackPayloadController() {
System.out.println("In controller class!!!!");
}
#RequestMapping(value = "/requestreceiver", consumes = "application/json", method = RequestMethod.POST)
public void receivePayload(#RequestBody String payload) {
System.out.println("In the controller method....");
System.out.println("Payload is : " + payload);
}
}
Now if I do a POST to http://localhost:8080/PayloadReceiver/requestreceiver/ using POSTMAN it says HTTP STATUS 404. My Json content that I am posting is
{
"key":"123"
}
My web.xml is as follows
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="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_3_0.xsd" version="3.0">
<display-name>PayloadReceiver</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>requestreceiver</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>requestreceiver</servlet-name>
<url-pattern>/requestreceiver.jsp</url-pattern>
<url-pattern>/requestreceiver.html</url-pattern>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
</web-app>
Second question is if I successfully receive the payload, how do I display the payload content on a new webpage?
Try to add the return statement to your method like this:
#RequestMapping(value = "/requestreceiver",consumes="...",method = RequestMethod.POST)
public String receivePayload(...)
...
return "requestreceiver";
I strangely have this problem :
[04/07/14 11:31:09:009 CEST] WARN servlet.PageNotFound: No mapping found for HTTP request with URI [/datapine-backend/heroku/resources] in DispatcherServlet with name 'rest'
However, I checked the logs and my method is already mapped!
annotation.RequestMappingHandlerMapping: Mapped "{[/heroku/resources/],methods=[POST],params=[],headers=[],consumes=[],produces=[application/json],custom=[]}" onto public org.springframework.http.ResponseEntity<java.lang.String> com.datapine.heroku.HerokuController.provision(net.sf.json.JSONObject)
This my method :
#Controller
public class HerokuController {
#RequestMapping(value = "/heroku/resources/", method = RequestMethod.POST,produces = MediaType.APPLICATION_JSON_VALUE)
public ResponseEntity<String> provision(#RequestBody JSONObject body){
System.out.println("called! \n");
JSONObject response = new JSONObject();
response.put("id", 555);
response.put("message", "Provision successful!");
return new ResponseEntity<String>(response.toString(),HttpStatus.OK);
}
This is my web.xml
<servlet>
<servlet-name>rest</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>rest</servlet-name>
<url-pattern>/heroku/*</url-pattern>
</servlet-mapping>
and this is the rest-servlet.xml :
<beans:import resource="classpath:spring-properties-loader.xml"/>
<context:component-scan base-package="com.datapine.heroku" />
<!-- Enables the Spring MVC #Controller programming model -->
<mvc:annotation-driven />
</beans:beans>
what can be the problem?
thanks.
I am new in Spring MVC. I created one controller newController.java in springproject. My code is below:
#RequestMapping(value = "/Receiver", method = RequestMethod.GET)
public void recvHttpGet(Model model) {
System.out.println("here get");
newmethod();
}
#RequestMapping(value = "/Receiver", method = RequestMethod.POST)
public void recvHttpPost(Model model) {
System.out.println("here post");
newmethod();
}
#RequestMapping(value = "/", method = RequestMethod.GET)
public String show(Model model) {
return "index";
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>ClassPath:/spring/applicationContext.xml, ClassPath:/spring/hibernateContext.xml</param-value>
</context-param>
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value></param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
whenever I try to run it then index.jsp page is shown but whenever I try to call /Receiver url it shows a 404 error. Please help me. Also when I changed in recvHttpGet method return "index" it also shows a 404 error. Also nothing is wrote to the console.
I wants to just check which method calls so wants to write in console window but it does not show anything.
You need to return a JSP page, just like return "index";
If you have a receiver.jsp page in views, then...
#RequestMapping(value = "/Receiver", method = RequestMethod.GET)
public String recvHttpGet(Model model) {
return "receiver";
}