Mockito:: MockMVC 的空指针异常
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【中文标题】Mockito:: MockMVC 的空指针异常【英文标题】：Mockito:: Null pointer exception for MockMVC 【发布时间】：2014-11-13 17:23:21 【问题描述】：我在 spring-mvc 中有项目。我用mockito写了一个测试用例，代码如下：
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
@Configurable
public class ABCControllerTest
@InjectMocks
CustomerController instance;
@Mock
Service paymentService;
@Mock
OfferService offerService;
@Mock
CategoryRepository categoryRepository;
@Mock
Category category;
@Mock
RuleService ruleService ;
private MockMvc mockMvc;
public PaymentCustomerControllerTest()
@Before
public void setup()
// this must be called for the @Mock annotations above to be processed
// and for the mock service to be injected into the controller under
// test.
MockitoAnnotations.initMocks(this);
mockMvc = MockMvcBuilders.standaloneSetup(instance).build();
@Test
public void testGetNewCashback() throws Exception
int a= 100;
int b=200;
// System.out.print(mockMvc);
try
mockMvc.perform(
get("repo/getTotalSum?Id=306187C35A5C98A1B01E3DCDE8BAC1DA&visitId=306187C35A5C98A1B01E3DCDE8BAC1DA&mobileStatus=0"))
.andExpect(MockMvcResultMatchers.status().isOk());
catch(Exception ex)
System.out.print(ex.getMessage());
a = 100;
@Test
public void testGetNewCashback() throws Exception
ResultDTO result = instance.getTotalSum(Id, visitId, mobileStatus);
assertEquals(result, expResult);
// TODO review the generated test code and remove the default call to fail.
fail("The test case is a prototype.");
这是我的 pom 文件：
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.ssww.cust</groupId>
<artifactId>cust</artifactId>
<version>1.0.0</version>
<packaging>war</packaging>
<name>Settlement</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<skipTests>true</skipTests>
<spring.core.version>3.1.2.RELEASE</spring.core.version>
<spring.security.core.version>3.1.0.RELEASE</spring.security.core.version>
<spring.data.jpa.version>1.1.0.RELEASE</spring.data.jpa.version>
<mysql.connector.version>5.1.21</mysql.connector.version>
<hibernate.version>4.1.6.Final</hibernate.version>
<c3p0.version>0.9.1.2</c3p0.version>
<querydsl.version>2.7.0</querydsl.version>
<log4j.version>1.2.17</log4j.version>
<cglib.version>2.2.2</cglib.version>
<aspectj.version>1.6.12</aspectj.version>
<slf4j.version>1.6.1</slf4j.version>
<javax.servlet-api.version>2.5</javax.servlet-api.version>
<javax.jstl-taglibs.version>1.1.2</javax.jstl-taglibs.version>
<jackson.version>1.9.3</jackson.version>
<!-- Testing -->
<mockito.version>1.8.5</mockito.version>
<junit.version>4.8.2</junit.version>
<!-- Plugins -->
<maven.copy.plugin.version>0.2.3</maven.copy.plugin.version>
<maven.compiler.plugin.version>2.3.2</maven.compiler.plugin.version>
<maven.apt.plugin.version>1.0</maven.apt.plugin.version>
<netbeans.hint.deploy.server>Tomcat</netbeans.hint.deploy.server>
</properties>
<dependencies>
<!-- javamelody-core >
<dependency>
<groupId>net.bull.javamelody</groupId>
<artifactId>javamelody-core</artifactId>
<version>1.49.0</version>
</dependency-->
<!-- itext, option to add PDF export -->
<dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext</artifactId>
<version>2.1.7</version>
<exclusions>
<exclusion>
<artifactId>bcmail-jdk14</artifactId>
<groupId>bouncycastle</groupId>
</exclusion>
<exclusion>
<artifactId>bcprov-jdk14</artifactId>
<groupId>bouncycastle</groupId>
</exclusion>
<exclusion>
<artifactId>bctsp-jdk14</artifactId>
<groupId>bouncycastle</groupId>
</exclusion>
</exclusions>
</dependency>
<!-- <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.0.0.RELEASE</version>
</dependency>-->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.2.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>commons-httpclient</groupId>
<artifactId>commons-httpclient</artifactId>
<version>3.1</version>
</dependency>
<!-- <dependency>
<groupId>com.ocpsoft.rewrite</groupId>
<artifactId>rewrite-impl-servlet</artifactId>
<version>1.0.0.Alpha3</version>
</dependency>-->
<!-- <dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext</artifactId>
<version>2.1.7</version>
</dependency>-->
<!-- Spring Core -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>$spring.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>$spring.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>$spring.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>$spring.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>$spring.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>$spring.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>$spring.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- A seamless aspect-oriented extension to the Java programming language -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>$aspectj.version</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>$aspectj.version</version>
</dependency>
<!-- Cglib is a powerful, high performance and quality Code Generation
Library, It is used to extend JAVA classes and implements interfaces at runtime. -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib-nodep</artifactId>
<version>$cglib.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>3.1.1.RELEASE</version>
</dependency>
<!-- The JavaServer Pages Standard Tag Library (JSTL) encapsulates, as
simple tags, core functionality common to many JSP applications. -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>$javax.jstl-taglibs.version</version>
</dependency>
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>$javax.jstl-taglibs.version</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-hibernate4</artifactId>
<version>2.1.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-xml</artifactId>
<version>2.4.0</version>
</dependency>
<!-- Data Mapper package is a high-performance data binding package built
on Jackson JSON processor -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>$jackson.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- Jackson is a high-performance JSON processor (parser, generator) -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>$jackson.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- Logger -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>$log4j.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- The Simple Logging Facade for Java or (SLF4J) serves as a simple facade
or abstraction for various logging frameworks, e.g. java.util.logging, log4j
and logback, allowing the end user to plug in the desired logging framework
at deployment time. -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>$slf4j.version</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>$slf4j.version</version>
</dependency>
<!-- Spring Security -->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>$spring.security.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>$spring.security.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>$spring.security.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>$spring.security.core.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- Spring Data JPA -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>$spring.data.jpa.version</version>
</dependency>
<!-- Database pooling -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>$c3p0.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- MySQL Connector -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>$mysql.connector.version</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- Hibernate and JPA -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>$hibernate.version</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>$hibernate.version</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>$hibernate.version</version>
</dependency>
<!-- QueryDSL -->
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-apt</artifactId>
<version>$querydsl.version</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-jpa</artifactId>
<version>$querydsl.version</version>
</dependency>
<!-- Javax Servlet. This needs to be included for runtime only! -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>$javax.servlet-api.version</version>
<scope>provided</scope>
</dependency>
<!-- Testing dependencies -->
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.9.5</version>
<type>jar</type>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.0.6.RELEASE</version>
<type>jar</type>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-core</artifactId>
<version>1.4</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20090211</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.8</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.1.2</version>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity</artifactId>
<version>1.7</version>
</dependency>
<dependency>
<groupId>org.modeshape</groupId>
<artifactId>modeshape-sequencer-msoffice</artifactId>
<version>3.1.2.Final</version>
<type>jar</type>
</dependency>
<!-- <dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>core-renderer</artifactId>
<version>R8</version>
<type>jar</type>
</dependency>-->
<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>core-renderer</artifactId>
<version>R8</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext</artifactId>
<version>2.0.8</version>
</dependency>
<dependency>
<groupId>net.sf.supercsv</groupId>
<artifactId>super-csv</artifactId>
<version>2.1.0</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>com.mixpanel</groupId>
<artifactId>mixpanel-java</artifactId>
<version>1.4.2</version>
</dependency>
<dependency>
<groupId>com.jcraft</groupId>
<artifactId>jsch</artifactId>
<version>0.1.50</version>
</dependency>
<!-- <dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>6.8.1</version>
<scope>test</scope>
</dependency>-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<scope>test</scope>
<type>jar</type>
</dependency>
</dependencies>
<build>
<finalName>settlement</finalName>
<plugins>
<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>7.1.2.v20100523</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>$maven.compiler.plugin.version</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.0</version>
<configuration>
<skipTests>false</skipTests>
</configuration>
</plugin>
<plugin>
<groupId>com.mysema.maven</groupId>
<artifactId>maven-apt-plugin</artifactId>
<version>1.0.3</version><!--$NO-MVN-MAN-VER$ -->
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>process</goal>
</goals>
<configuration>
<outputDirectory>src/main/java</outputDirectory>
<processor>com.mysema.query.apt.jpa.JPAAnnotationProcessor</processor>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.5.7.201204190339</version>
<executions>
<execution>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>report</id>
<phase>prepare-package</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat6-maven-plugin</artifactId>
<configuration>
<addContextWarDependencies>true</addContextWarDependencies>
</configuration>
<version>2.1</version>
</plugin>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<configuration>
<ajpPort>8391</ajpPort>
<port>8392</port>
<addContextWarDependencies>true</addContextWarDependencies>
</configuration>
<version>2.1</version>
</plugin>
</plugins>
</pluginManagement>
</build>
<repositories>
<!-- For main Spring releases -->
<repository>
<id>org.springframework.maven.release</id>
<name>Spring Maven Release Repository</name>
<url>http://maven.springframework.org/release</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<!--
<repository>
<id>jboss</id>
<name>JBoss repository</name>
<url>https://repository.jboss.org/nexus/content/repositories/releases</url>
</repository>
-->
</repositories>
</project>
但是在构建项目时，我遇到了这个异常：
java.lang.NullPointerException
at ABCControllerTest.testGetNewCashback(ABCControllerTest.java:46)
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:606)
at org.codehaus.surefire.battery.AbstractBattery.executeTestMethod(AbstractBattery.java:124)
at org.codehaus.surefire.battery.AbstractBattery.executeTestMethods(AbstractBattery.java:70)
at org.codehaus.surefire.battery.AbstractBattery.execute(AbstractBattery.java:49)
at org.codehaus.surefire.battery.JUnitBattery.execute(JUnitBattery.java:224)
at org.codehaus.surefire.Surefire.executeBattery(Surefire.java:204)
at org.codehaus.surefire.Surefire.run(Surefire.java:153)
at org.codehaus.surefire.Surefire.run(Surefire.java:77)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at the value of mock is getting null, so getting null pointer exception. I googled out, changed spring version to 4.0.0Release, still same.
有什么想法吗？谢谢。
更改为独立后：我得到 java.lang.Exception: mvc is has null value.this is my code
@RunWith(MockitoJUnitRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
@WebAppConfiguration
public class PaymentCustomerControllerTest
@Autowired
private WebApplicationContext wac;
private MockMvc mockMvc;
@Before
public void setUp()
MockitoAnnotations.initMocks(this);
CustomerController instance = new CustomerController();
mockMvc = MockMvcBuilders.standaloneSetup(instance).build();
@Test
public void testGetNewCashback() throws Exception
if(mockMvc==null)
throw new Exception("mvc is having null value");
mockMvc.perform(
get("info/getInfo?Id=306&visitId=30618&mobileStatus=0"))
.andExpect(MockMvcResultMatchers.status().isOk());
【问题讨论】：
【参考方案1】：如果您想使用 Mockito 进行测试，则必须使用 MockitoJUnitRunner 而不是 SpringJUnit4ClassRunner
【讨论】：
谢谢，但我得到 java.lang.Exception: mvc is has null value. 在使用 MockitoJunitRunner 运行测试用例时，不能使用 spring 相关的注解/配置。@ContextConfiguration, MockMvc and @WebAppConfiguration should not be used in your test case. 看到这个帖子***.com/questions/15068740/…
MockitoAnnotations.initMocks(this) 是等价的，如果你想使用不同的跑步者以上是关于Mockito:: MockMVC 的空指针异常的主要内容，如果未能解决你的问题，请参考以下文章