春季 Junit 测试错误 "could not find current request via RequestContextHolder"

Question

我使用 spring 框架 4 并且有他的行的类：

 String link = ServletUriComponentsBuilder.fromCurrentContextPath().path("/admin/menu/edit/"+id).build().toUriString();

类

在服务器上完美运行，但是当我想对其进行单元测试并创建上面使用的类和调用方法时可能会出错：

java.lang.IllegalStateException: Could not find current request via RequestContextHolder
at org.springframework.util.Assert.state(Assert.java:392)
at org.springframework.web.servlet.support.ServletUriComponentsBuilder.getCurrentRequest(ServletUriComponentsBuilder.java:190)
at org.springframework.web.servlet.support.ServletUriComponentsBuilder.fromCurrentContextPath(ServletUriComponentsBuilder.java:158)
at com.mohsenj.core.util.HiararchyUtils.createTableTrMenu(HiararchyUtils.java:175)
at com.mohsenj.core.util.HiararchyUtils.getHForTableMenu(HiararchyUtils.java:153)
at com.mohsenj.core.util.HiararchyUtils.getHForTableMenu(HiararchyUtils.java:158)
at com.mohsenj.core.util.HiararchyUtilsTest.getHForTableMenu_verifyReturnString(HiararchyUtilsTest.java:65)
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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
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)

我的班级：

@Component
public class HiararchyUtils {
    public String getHForTableMenu(List<? extends Hierarchically> menus,      Integer parentId) {
    seperateParentsIntoAssoc(menus);
    return createTableTrMenu(parentId, 0);
    }
    public String createTableTrMenu(Integer parent, Integer level) {
          // some code
            String link = ServletUriComponentsBuilder.fromCurrentContextPath().path("/admin/menu/edit/"+items.get(itemId).getId()).build().toUriString();
          // some code
     }}

测试类 ：

@RunWith(MockitoJUnitRunner.class)
     public class HiararchyUtilsTest {
      private HiararchyUtils hiararchyUtils;

@Before
public void setup() {
    hiararchyUtils = new HiararchyUtils();
}
@Test
public void getHForTableMenu_() {
    String trs = hiararchyUtils.getHForTableMenu(menus);
}
}

我该怎么办？

Answer 1

添加MockHttpServletRequest以提供所需的RequestContextHolder和上下文路径一样简单。

作为类变量，添加

private MockHttpServletRequest mockRequest;

然后，在设置测试时，请尝试：

@Before
mockRequest = new MockHttpServletRequest();
mockRequest.setContextPath("/your-app-context");
ServletRequestAttributes attrs = new ServletRequestAttributes(mockRequest);
RequestContextHolder.setRequestAttributes(attrs);

这应该解决该错误。