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RuntimeException cannot be matched with response, re-throwing java.lang.NullPointerException into HTTP container

I am trying to verify a user record from my database using Spring Framework, RESTful Web Services, and a Jersey implementation.

I am using MySQL v5.6.0, Eclipse Galileo, Apache tomcat v6.0

UserAccessWS.java

@Path("/user") @Service public class UserAccessWS { @Autowired private IUserService userService; private static Logger LOGGER = Logger.getLogger(UserAccessWS.class); @POST @Path("/validateUser") @Produces({ MediaType.APPLICATION_JSON }) public String getValidateUser(@Context HttpServletRequest request, @FormParam("userName") String userName, @FormParam("password") String password) throws JSONException { LOGGER.info("getValidateUser method"); Users users = new Users(); users.setUserName(userName); users.setPassword(password); List<Users> userList = new ArrayList<Users>(); userList = userService.validateUser(users); JSONObject userInfo = new JSONObject(); userInfo.put("authorize", true); return userInfo.toString(); } @POST @Path("/login") @Produces({ MediaType.APPLICATION_JSON }) public String userLogin( @FormParam("userName") String userName, @FormParam("password") String password) throws Exception { LOGGER.info("in UserAccessWS::userLogin()"); JSONObject json = new JSONObject(); JSONArray jsonArr = new JSONArray(); List<Users> userList = new ArrayList<Users>(); userList = userService.userLogin(userName, password);

This line indicates the zero error "userList = userService.userLogin (username, password);"

  //System.out.println(userList); if (userList.size() == 0) { json.put("status", "fail"); } else { json.put("status", "success"); jsonArr.add(userList.get(0)); json.put("data", jsonArr); } //System.out.println(jsonArr.get(0).userId); return json.toString(); }

IUserService.java

 package com.cisco.service.view; import java.util.List; import org.json.JSONObject; import com.cisco.connectivity.rs.mapper.ForgotPassword; import com.cisco.connectivity.rs.mapper.PasswordChange; import com.cisco.connectivity.rs.mapper.Registration; import com.cisco.model.xml.domain.Email; import com.cisco.model.xml.domain.Users; public interface IUserService { public List<Users> validateUser(Users users); public List<Users> userLogin(String userName, String password); public String userChangePassword(PasswordChange change); public List<Email> userForgotPassword(ForgotPassword forgot); public JSONObject saveData( Registration registration); public JSONObject check(String userName); public JSONObject editData( Registration registration); public JSONObject deleteData( Registration registration); public JSONObject getData( Registration registration); public JSONObject getRegistrationFormData(String userName); }

applicationContext.xml

 <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:jee="http://www.springframework.org/schema/jee" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/tx/spring-aop-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.0.xsd" default-autowire="byName"> <bean id="applicationProperties" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="ignoreResourceNotFound" value="true" /> <property name="ignoreUnresolvablePlaceholders" value="true" /> <property name="searchSystemEnvironment" value="true" /> </bean> <context:component-scan base-package="com.cisco" /> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver" /> <property name="url" value="jdbc:mysql://localhost:3306/pooler_mgmt" /> <property name="username" value="root" /> <property name="password" value="" /> </bean> <bean id="systemProperties" class="java.util.HashMap"></bean> <bean id="systemEnvironment" class="java.util.HashMap"></bean>

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/web-app_2_5.xsd" 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>CiscoPoolerMgmt</display-name> <description>CiscoPoolerMgmt</description> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:/CiscoPoolerMgmt/config/applicationContext.xml</param-value> </context-param> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>classpath*:/CiscoPoolerMgmt/config/log4j.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- REST web service --> <servlet> <servlet-name>REST_stat_web_service</servlet-name> <servlet-class>com.sun.jersey.spi.spring.container.servlet.SpringServlet</servlet-class> <init-param> <param-name>com.sun.jersey.config.property.resourceConfigClass</param-name> <param-value>com.sun.jersey.api.core.PackagesResourceConfig</param-value> </init-param> <init-param> <param-name>com.sun.jersey.config.property.packages</param-name> <param-value>com.cisco.ws</param-value> </init-param> <init-param> <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name> <param-value>true</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>REST_stat_web_service</servlet-name> <url-pattern>/cisco_BI/rest/*</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> </welcome-file-list>

The error I am getting is:

 SEVERE: The RuntimeException could not be mapped to a response, re-throwing to the HTTP container java.lang.NullPointerException at com.cisco.ws.UserAccessWS.userLogin(UserAccessWS.java:69) 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 com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:149) at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:67) at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:259) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133) at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133) at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:71) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:990) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:941) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:932) at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:384) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:451) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:632) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Unknown Source) Aug 21, 2013 12:54:21 AM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet REST_stat_web_service threw exception java.lang.NullPointerException at com.cisco.ws.UserAccessWS.userLogin(UserAccessWS.java:69) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:149) at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:67) at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:259) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133) at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133) at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:71) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:990) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:941) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:932) at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:384) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:451) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:632) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Unknown Source)

The database where it should check the details entered by the user is NOT empty. They have entries. But through this request, it always throws a NullPointerException.

Please help me.

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Maybe this is a late answer. I suspect that the userService itself is null. It is not supported automatically. Because here you mentioned default-autowire="byName" in your applicationContext.xml . I could not find a bean named userService in your applicationContext.xml . I think you need to add the line below in applicationContext.xml

  <bean id="userService" class="yourIUserServiceImplClass"></bean>
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Source: https://habr.com/ru/post/952150/

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