spring-boot 测试错误 404答案

【问题标题】：spring-boot Testing Error 404spring-boot 测试错误 404
【发布时间】：2017-09-06 13:02:47
【问题描述】：

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

请帮我在 Spring Boot 应用程序中找到原因响应 404。这是应用程序

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")));
    }
    }

我错过了 MockHttpServletResponse 的配置吗？由于输出错误是

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)

【问题讨论】：

我认为您在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 或其他基于 Spring 版本的注释来注释该类
成功了！当添加@RestController 谢谢，
很高兴它的工作，如果它帮助你，请投票给我的评论。谢谢

标签： spring spring-boot

【解决方案1】：

从您的代码中，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 Context 启动 Spring Boot 应用程序，然后运行您的测试。如果您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，您可以使用以下代码：

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

【讨论】：