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[英]Junit test spring controller mockMvc @ContextConfiguration
[英]Spring Controller ModelAndView test MockMvc empty Response
我有这个简单的示例设置来使用 MockMvc 对 spring Controller ModelAndView 进行单元测试,但响应始终为空,即使在调试中我可以看到 Z594C103F2C6E04C3D18AB059F031E0 代码已执行。
这是代码:
/src/main/java/controller/MvcController.java
package controller;
import java.util.HashMap;
import java.util.Map;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class MvcController {
@RequestMapping("/hello/{id}")
public ModelAndView hello(@PathVariable("id") String id) {
Map<String, String> model = new HashMap<>();
ModelAndView modelAndView = new ModelAndView("hello", model);
return modelAndView;
}
}
/src/main/webapp/WEB-INF/jsp/hello.jsp
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="e"
uri="https://www.owasp.org/index.php/OWASP_Java_Encoder_Project"%>
<%@ page contentType="text/html; charset=UTF-8"%>
<!DOCTYPE html>
<html>
<head>
</head>
<body>HELLO WORLD
</body>
</html>
/src/test/java/controller/MvcControllerTest.java
package controller;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.RequestBuilder;
import org.springframework.test.web.servlet.ResultActions;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = { MvcController.class })
public class MvcControllerTest {
@Autowired
private MvcController mvcController;
private MockMvc mockMvc;
@Before
public void init() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/jsp/");
resolver.setSuffix(".jsp");
this.mockMvc = MockMvcBuilders.standaloneSetup(mvcController).setViewResolvers(resolver).build();
}
@Test
public void testHello() throws Exception {
RequestBuilder requestBuilder = MockMvcRequestBuilders.get("/hello/XWQHEDg9e72t");
ResultActions result = mockMvc.perform(requestBuilder);
MvcResult mvcResult = result.andReturn();
MockHttpServletResponse mockHttpServletResponse = mvcResult.getResponse();
String response = mockHttpServletResponse.getContentAsString();
assertThat(response).contains("HELLO WORLD");
}
}
MockMvc
中的关键词是mock 。 此框架没有设置带有 JSP 引擎的完整 Servlet 容器。 因此,它不会呈现您的 controller 返回的视图,并且MockHttpServletResponse
不包含正文(对于此用例)。
您可以使用MockHttpServletResponse#getForwardedUrl()
来获取 JSP 的 url ,Servlet 容器会将请求转发到,由您的视图名称以及InternalResourceViewResolver
的前缀和后缀构成。
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