Getting AJAX HTTP 500 in SpringMVC response - ajax

Question

I am trying to get the list of users from Mongodb with ajax it works without ajax. I did this with MySQL and it worked so I don't understand what is wrong with my code.
I can send the request and go to the method and return the List<User>.
But when I put it in map can't get that map as a response in the success function.
My Console Output:
free.js:31 Uncaught TypeError: Cannot read property 'action' of null
at window.onmessage (free.js:31)
window.onmessage # free.js:31
jquery.min.js:2 POST http://localhost:8080/UserManagementMongoDB/list 500
send # jquery.min.js:2
ajax # jquery.min.js:2
load # submitedform:342
onload # submitedform:25
submitedform:355 Uncaught ReferenceError: response is not defined
at Object.error (submitedform:355)
at u (jquery.min.js:2)
at Object.fireWith [as rejectWith] (jquery.min.js:2)
at k (jquery.min.js:2)
at XMLHttpRequest.<anonymous> (jquery.min.js:2)
Here is my Controller method
#RequestMapping(value="/list", method=RequestMethod.POST)
public #ResponseBody Map<String,Object> getAll(User user) {
Map<String,Object> map = new HashMap<String,Object>();
List<User> list = mainPageService.getAllUsers();
if (list != null){
map.put("status","200");
map.put("message","Data found");
map.put("data", list);
}else{
map.put("status","404");
map.put("message","Data not found");
}
return map;
}
And my ajax load function
data = "";
load = function(){
$.ajax({
url:'list',
type:'POST',
success: function(response){
alert("Hello");
data = response.data;
$('.tr').remove();
for(i=0; i<response.data.length; i++){
$("#table").append("<tr class='tr'> <td> "+response.data[i].userName+" </td> <td> "+response.data[i].userSurname+" </td> <td> <a href='#' onclick= edit("+i+");> Edit </a> </td> </td> <td> <a href='#' onclick='delete_("+response.data[i].userId+");'> Delete </a> </td> </tr>");
}
},
error: function () {
alert(response);
}
});
Here is my dependencies
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>UserManagementMongoDB</groupId>
<artifactId>UserManagementMongoDB</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>UserManagementMongoDB Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- Servlet Library -->
<!-- http://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${javax.servlet-api.version}</version>
<scope>provided</scope>
</dependency>
<!-- Spring dependencies -->
<!-- http://mvnrepository.com/artifact/org.springframework/spring-core -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.framework.version}</version>
</dependency>
<!-- http://mvnrepository.com/artifact/org.springframework/spring-web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.framework.version}</version>
</dependency>
<!-- http://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.framework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.framework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
<version>${spring.data.commons.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>${spring.data.mongodb.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/net.tanesha.recaptcha4j/recaptcha4j -->
<dependency>
<groupId>net.tanesha.recaptcha4j</groupId>
<artifactId>recaptcha4j</artifactId>
<version>0.0.7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.glassfish/javax.json -->
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.json</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.10</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.framework.version}</version>
</dependency>
</dependencies>
<!-- Properties for the dependencies -->
<properties>
<java-version>1.7</java-version>
<!-- Spring properties -->
<spring.framework.version>5.0.9.RELEASE</spring.framework.version>
<spring.data.commons.version>1.12.1.RELEASE</spring.data.commons.version>
<spring.data.mongodb.version>1.10.6.RELEASE</spring.data.mongodb.version>
<!-- Other properties -->
<javax.servlet-api.version>3.1.0</javax.servlet-api.version>
<junit.version>4.12</junit.version>
<jstl.version>1.2</jstl.version>
</properties>
<build>
<finalName>ExampleWebApplication</finalName>
</build>
</project>
I am getting 500 right now I just can't get the response everything other than that works. I can send my parameters with ajax just can't receive the map resources
My model code:
public class User {
#Id
private String userId;
private String userName;
private String userSurname;
private String phoneNo;
public User(String userId,String userName,String userSurname,String phoneNo) {
setUserId(userId);
setUserName(userName);
setUserSurname(userSurname);
setPhoneNo(phoneNo);
}
public User() {
// TODO Auto-generated constructor stub
}
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserSurname() {
return userSurname;
}
public void setUserSurname(String userSurname) {
this.userSurname = userSurname;
}
public String getPhoneNo() {
return phoneNo;
}
public void setPhoneNo(String phoneNo) {
this.phoneNo = phoneNo;
}
My Stacktrace:
ava.lang.Exception
at com.kaan.springmvc.controller.MainPageController.getAll(MainPageController.java:117)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:209)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:891)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:877)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:770)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Blockquote

Answer 1

Do you separate the front end and back end?
If yes, it might be different server or port number and violate CORS. Please help to update more information.
The second point, your method require User object, but i don't any thing relative to it from ajax request?