Spring junit 測試錯誤“無法通過 RequestContextHolder 找到當前請求”

Question

我使用 spring 框架 4 並且有他的課程：

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

類在服務器上完美運行，但是當我想對其進行單元測試並創建上面使用的類和調用方法時可能會出現錯誤：

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)

我的課：

@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
     }}

測試類：

@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);
}
}

我該怎么辦？

Answer 1

它可能就像添加一個MockHttpServletRequest以提供所需的RequestContextHolder和上下文路徑一樣簡單。

作為類變量，添加

private MockHttpServletRequest mockRequest;

然后，在設置測試時，請嘗試：

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

ServletRequestAttributes attrs = new ServletRequestAttributes(mockRequest);

RequestContextHolder.setRequestAttributes(attrs);

那應該解決那個錯誤。