Java 集成SpringMVC和Jersey,在查看Jersey端点时获得空指针
我的简单球衣端点:Java 集成SpringMVC和Jersey,在查看Jersey端点时获得空指针,java,hibernate,spring-mvc,jersey,Java,Hibernate,Spring Mvc,Jersey,我的简单球衣端点: @Component @Path("/v1/user") public class UserService { @Autowired com.myapp.core.service.UserService userService; @GET @Path("/get") public Response getUser() { User user = userService.getUser(1); Str
@Component
@Path("/v1/user")
public class UserService {
@Autowired
com.myapp.core.service.UserService userService;
@GET
@Path("/get")
public Response getUser() {
User user = userService.getUser(1);
String result = user.getUsername();
return Response.status(200).entity(result).build();
}
}
(顺便说一句,由于这是restful,这是xml还是json输出??)
我的spring mvc页面工作正常(hibernate出现了这种情况),但当我访问localhost:8080/api/v1/user/get时,我看到:
java.lang.NullPointerException
com.myapp.api.UserService.getUser(UserService.java:30)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
My web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">
<display-name>myapp</display-name>
<description>myapp</description>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/applicationContext.xml
/WEB-INF/spring/myapp-servlet.xml
</param-value>
</context-param>
<servlet>
<servlet-name>myapp</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/myapp-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>myapp</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- jersey -->
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<!--<listener>-->
<!--<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>-->
<!--</listener>-->
<servlet>
<servlet-name>jersey-servlet</servlet-name>
<servlet-class>
com.sun.jersey.spi.spring.container.servlet.SpringServlet
</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.myapp.api</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jersey-servlet</servlet-name>
<url-pattern>/api/*</url-pattern>
</servlet-mapping>
<!-- /jersey -->
</web-app>
myapp
myapp
上下文配置位置
/WEB-INF/spring/applicationContext.xml
/WEB-INF/spring/myapp-servlet.xml
myapp
org.springframework.web.servlet.DispatcherServlet
上下文配置位置
/WEB-INF/spring/myapp-servlet.xml
1.
myapp
/
org.springframework.web.context.ContextLoaderListener
泽西servlet
com.sun.jersey.spi.spring.container.servlet.SpringServlet
com.sun.jersey.config.property.packages
com.myapp.api
2.
泽西servlet
/原料药/*
我的应用程序上下文包含以下bean:
dataSource、sessionFactory和userDao
myapp-servlet.xml具有:
<context:component-scan base-package="com.myapp" />
(applicationContext和myapp-servlet.xml都有相同的xml头节点等,以防出现问题?确保myapp-servlet.xml包含以下内容:
<!-- enable autowire -->
<context:annotation-config />
默认值为“*/*”-任何类型。
可以找到关于jersey注释的有用信息
@Produces({MediaType.APPLICATION_JSON})
@Consumes({MediaType.APPLICATION_JSON})
@Path("/v1/user")
public class UserService {...