Spring 弹簧启动测试错误404

我正在尝试编写轻量级的spring restful服务， 我更喜欢编写TDD应用程序，所以没有使用服务器来运行该应用程序。 我将eclipse与“maven测试”和“Junit测试”一起使用

请帮助我在spring boot应用程序中找到原因响应404。 这是申请表

import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.web.bind.annotation.*;
@SpringBootApplication
public class Example {

    @RequestMapping("/")
        String home() {
            return "welcome";
        }

  public static void main(String[] args) throws Exception {
      SpringApplication.run(Example.class, args);
  }

}

restful服务测试代码如下

 import static org.hamcrest.Matchers.equalTo;
  import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
  import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
  import org.springframework.boot.test.context.SpringBootTest;
  import org.springframework.http.MediaType;
  import org.springframework.test.context.junit4.SpringRunner;
  import org.springframework.test.web.servlet.MockMvc;
  import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;


@RunWith(SpringRunner.class)
@SpringBootTest
@AutoConfigureMockMvc
public class ExampleTest {

    @Autowired
    private MockMvc mvc;

    @Test
    public void getHello() throws Exception {
        mvc.perform(MockMvcRequestBuilders.get("/")
            .accept(MediaType.APPLICATION_JSON))
            .andExpect(status().isOk())
            .andExpect(content().string(equalTo("welcome")));
    }
    }

我是否错过了MockHttpServletResponse的配置？因为输出错误是

mydemo
com.sample.mydemo.ExampleTest
getHello(com.sample.mydemo.ExampleTest)
java.lang.AssertionError: Status expected:<200> but was:<404>   at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:54)  at org.springframework.test.util.AssertionErrors.assertEquals(AssertionErrors.java:81)  at org.springframework.test.web.servlet.result.StatusResultMatchers$10.match(StatusResultMatchers.java:664) at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:171)   at com.sample.mydemo.ExampleTest.getHello(ExampleTest.java:30)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)    at java.lang.reflect.Method.invoke(Method.java:498) 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.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:73) at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:83)   at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)   at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)   at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:250)   at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)    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.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)   at org.junit.runners.ParentRunner.run(ParentRunner.java:363)    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:189)    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)

mydemo
com.sample.mydemo.ExampleTest
getHello（com.sample.mydemo.ExampleTest）
java.lang.AssertionError:Status expected:但是was:在org.springframework.test.util.AssertionErrors.fail（AssertionErrors.java:54）在org.springframework.test.web.servlet.result.StatusResultMatchers$10.match（StatusResultMatchers.java:664）上在org.springframework.test.web.servlet.MockMvc$1.andExpect（MockMvc.java:171）在com.sample.mydemo.ExampleTest.getHello（ExampleTest.java:30）在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）在sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:498）在org.junit.runners.model.FrameworkMethod$1.runReflectVeCall（FrameworkMethod.java:50）在org.junit.internal.runners.model.reflectVeCallable.run（reflectVeCallable.java:12）在org.junit.runners.model.FrameworkMethod.invokeeExplosive（FrameworkMethod.java:47）位于org.junit.internal.runners.statements.InvokeMethod.evaluate（InvokeMethod.java:17）位于org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate（RunBeforeTestExecutionCallbacks.java:73）位于org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate位于org.springframework.test.context.junit4.statements.runbeforettestmethodcallbacks.evaluate（RunBeforeTestMethodCallbacks.java:75）的org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate（RunBeforeTestMethodCallbacks.java:75）的位于org.springframework.test.context.junit4.statements.SpringRepeat.evaluate（SpringRepeat.java:84）位于org.junit.runners.ParentRunner.runLeaf（ParentRunner.java:325）位于org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild（SpringJUnit4ClassRunner.java:250）在org.junit.runners.ParentRunner$3.run（ParentRunner.java:290）在org.junit.runners.ParentRunner$1.schedule（ParentRunner.java:71）在org.junit.runners.ParentRunner.runners（ParentRunner.java:288）上org.junit.runners.ParentRunner.access$000（ParentRunner.java:58）org.junit.runners.ParentRunner$2.evaluate（ParentRunner.java:268）org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate（RunBeforeTestClassCallbacks.java:61）在org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate（RunAfterTestClassCallbacks.java:70）在org.junit.runners.ParentRunner.run（ParentRunner.java:363）在org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run（SpringJUnit4ClassRunner.java:189）上org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run（JUnit4TestReference.java:86）org.eclipse.jdt.internal.junit.runner.TestExecution.run（TestExecution.java:38）org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:459）org.eclipse.jdt.jdt.internal.junit.junit.junit.runner.runner.runner.runTests（RemoteTestRunner.java:678）位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run（RemoteTestRunner.java:382）位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main（RemoteTestRunner.java:192）

从代码中，您缺少要运行以进行测试的应用程序的名称，例如

@RunWith(SpringRunner.class)
@SpringBootTest(
    classes = Example.class
)

它将首先使用上下文启动spring boot应用程序，然后运行测试。如果需要在为主应用程序配置的同一端口上启动spring boot应用程序进行测试，则可以使用以下代码：

@RunWith(SpringRunner.class)
@SpringBootTest(
        classes = Example.class,
        webEnvironment = DEFINED_PORT
)

---

我认为您的示例类中缺少基本注释。spring如何知道它必须在那里查找..我认为您可能必须使用@RestController或基于spring版本的其他注释对该类进行注释它工作了！添加@RestController后谢谢，很高兴它工作了，如果对您有帮助，请向上投票我的评论。谢谢