java測試報錯java.lang.NoSuchMethodError
阿新 • • 發佈:2019-02-06
最近在寫一個客戶管理系統,用Test測試mapper的時候報了java.lang.NoSuchMethodError的錯誤。
java.lang.NoSuchMethodError: org.springframework.util.Assert.notNull(Ljava/lang/Object;Ljava/util/function/Supplier;)V at org.springframework.test.context.support.ContextLoaderUtils.resolveContextConfigurationAttributes(ContextLoaderUtils.java:240) at org.springframework.test.context.support.AbstractTestContextBootstrapper.buildMergedContextConfiguration(AbstractTestContextBootstrapper.java:295) at org.springframework.test.context.support.AbstractTestContextBootstrapper.buildTestContext(AbstractTestContextBootstrapper.java:108) at org.springframework.test.context.TestContextManager.<init>(TestContextManager.java:139) at org.springframework.test.context.TestContextManager.<init>(TestContextManager.java:124) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTestContextManager(SpringJUnit4ClassRunner.java:151) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.<init>(SpringJUnit4ClassRunner.java:142) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104) at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86) at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59) at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26) at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59) at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createUnfilteredTest(JUnit4TestLoader.java:84) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:70) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
下面這個是我的Test類:
package com.atguigu.crud.test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import com.atguigu.crud.bean.Department; import com.atguigu.crud.dao.DepartmentMapper; import org.junit.Test; import org.junit.runner.RunWith; /* * 推薦Spring的專案就可以使用Spring的單元測試,可以自動注入我們需要的元件 * 匯入springTest模組 * @ContextConfiguration指定spring的配置檔案位置 */ @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations={"classpth:ApplicationContext.xml"}) public class MapprtTest { @Autowired DepartmentMapper departmentMapper; /* * 測試DepartmentMapper */ @Test public void testCRUD(){ // //1.建立springIOC容器 // ApplicationContext ioc = new ClassPathXmlApplicationContext(); // //2.從容器中獲取mapper // ioc.getBean(DepartmentMapper.class); System.out.println(departmentMapper); //1.插入幾個部門 departmentMapper.insertSelective(new Department(1,"開發部")); departmentMapper.insertSelective(new Department(2,"測試部")); } }
百度了很多網上的資料,普遍的錯誤都是
1.jar包衝突
2.重啟eclipse
3.找不到該方法
4.沒寫@Test
5.沒匯入hamcrest.jar
但是,以上的五個問題我都沒發生過,後來問了我同學,才知道是哪裡錯誤。
把@RunWith(SpringJUnit4ClassRunner.class)給註釋掉,就不會報錯了。
執行正常