使用junit测试springMVC的action出现java.lang.NullPointerException
大神帮忙解决下啊
错误：
java.lang.NullPointerException
at cn.com.qzinfo.test.base.JUnitActionBase.excuteAction(JUnitActionBase.java:68)
at cn.com.qzinfo.test.example.ExampleActionTest.test(ExampleActionTest.java:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
package cn.com.qzinfo.test.base;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.junit.BeforeClass;
import org.springframework.mock.web.MockServletContext;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.XmlWebApplicationContext;
import org.springframework.web.servlet.HandlerAdapter;
import org.springframework.web.servlet.HandlerExecutionChain;
import org.springframework.web.servlet.HandlerMapping;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter;
import org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping;
/**
* JUnit测试action时使用的基类
*
* @author fule
*
*/
public class JUnitActionBase {
private static HandlerMapping handlerMapping;
private static HandlerAdapter handlerAdapter;
/**
* 读取配置文件c
*/
@BeforeClass
public static void setUp() {
if (handlerMapping == null) {
String[] configs = { "file:src/applicationContext.xml","file:WebRoot/WEB-INF/springMVC-servlet.xml" };
XmlWebApplicationContext context = new XmlWebApplicationContext();
context.setConfigLocations(configs);
MockServletContext msc = new MockServletContext();
context.setServletContext(msc);
context.refresh();
msc
.setAttribute(
WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE,
context);// TODO
handlerMapping = (HandlerMapping) context
.getBean(DefaultAnnotationHandlerMapping.class);
handlerAdapter = (HandlerAdapter) context
.getBean(context
.getBeanNamesForType(AnnotationMethodHandlerAdapter.class)[0]);
// handlerAdapter = (HandlerAdapter) context.getBean(context
// .getNamespace());
}
}
/**
* 执行request请求的action
*
* @param request
* @param response
* @return
* @throws Exception
*/
public ModelAndView excuteAction(HttpServletRequest request, HttpServletResponse response)
throws Exception {
HandlerExecutionChain chain = handlerMapping.getHandler(request);
final ModelAndView model = handlerAdapter.handle(request, response,
chain.getHandler());
return model;
}
}
package cn.com.qzinfo.test.example;
import org.junit.Assert;
import org.junit.Test;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import cn.com.qzinfo.test.base.JUnitActionBase;
public class ExampleActionTest extends JUnitActionBase {
@Test
public void test() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest();
MockHttpServletResponse response = new MockHttpServletResponse();
request.setRequestURI("example_exampleAction_insetExample");
request.addParameter("operatorId", "1234");
request.addParameter("strRev1", "1234");
request.setMethod("post");
this.excuteAction(request, response);
// 执行结果
String result = response.getContentAsString();
Assert.assertNotNull(result);
}
}
package cn.com.qzinfo.example.action;
import javax.annotation.Resource;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import cn.com.qzinfo.example.model.Example;
import cn.com.qzinfo.example.service.ExampleService;
@Controller
@RequestMapping(value = "/example")
public class ExampleAction {
@Resource
private ExampleService exampleServcie;
@RequestMapping(value = "example_exampleAction_insetExample")
public ModelAndView insertExample(Example example) {
exampleServcie.insertExample(example);
return new ModelAndView("/example/exampleList");
}
}
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd"
default-autowire="byName">
<!-- 自动扫描 -->
<context:component-scan base-package="cn.com.qzinfo" />
<!-- 使用spring MVC 注解功能 -->
<mvc:annotation-driven />
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<!-- 对模型试图层的解析-->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/" p:suffix=".jsp"></bean>
</beans>
private boolean useTypeLevelMapping(HttpServletRequest request) {
if (!hasTypeLevelMapping()
[解决办法]
ObjectUtils.isEmpty(getTypeLevelMapping().value())) {
return false;
}
return (Boolean) request.getAttribute(HandlerMapping.INTROSPECT_TYPE_LEVEL_MAPPING);
}
