Java Spring junit测试错误“；无法通过RequestContextHolder找到当前请求；

我使用spring framework 4，并且有这样一个类：

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

类在服务器上完美地运行，但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，可能会出现错误：

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
     }}

---

我应该怎么做？

为了提供所需的

RequestContextHolder

和上下文路径，添加

MockHttpServletRequest

可能很简单

作为类变量，添加

private MockHttpServletRequest mockRequest;

然后，在设置测试时，请尝试：

---

这应该可以解决这个错误。

您的测试设置如何？只有一行代码或prod代码太少，无法使用answer@arne-burmeister我更新问题此链接可能会有所帮助。

private MockHttpServletRequest mockRequest;

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

ServletRequestAttributes attrs = new ServletRequestAttributes(mockRequest);

RequestContextHolder.setRequestAttributes(attrs);