第一次搭建SSM框架，整合SpringMVC完成后進行Controller測試，找資料並解決問題。
下圖是我的完整目錄：
1 建立UserController類
代碼清單 1-1：UserController.java
package org.sei.controller; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.sei.pojo.User; import org.sei.service.UserService; @Controller @RequestMapping("/user") public class UserController { @Resource private UserService userService; @RequestMapping("/showUser1") public String toIndex(HttpServletRequest request,Model model) { int userId = Integer.parseInt(request.getParameter("id")); User user = this.userService.getUserById(userId); model.addAttribute("user", user); return user.getUserName(); } @RequestMapping("/showUser3") public String toIndex1(User u,Model model) //注意：參數不同 { int userId = u.getId(); User user = this.userService.getUserById(userId); model.addAttribute("user", user); return user.getUserName(); } } 2 建立測試類
代碼清單 2-1：MockTestController.java
package org.sei.testmybatis; import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.MediaType; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import org.springframework.test.context.web.WebAppConfiguration; import org.springframework.test.web.servlet.MockMvc; import org.springframework.test.web.servlet.setup.MockMvcBuilders; import org.springframework.web.context.WebApplicationContext; import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get; import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print; import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations={"classpath:spring-mybatis.xml","classpath:spring-mvc.xml"}) @WebAppConfiguration public class MockTestController { protected MockMvc mockMvc; @Autowired protected WebApplicationContext wac; @Before() //這個方法在每個方法執行之前都會執行一遍 public void setup() { mockMvc = MockMvcBuilders.webAppContextSetup(wac).build(); //初始化MockMvc對象 } @Test public void getAllCategoryTest() throws Exception { String responseString = mockMvc.perform ( get("/user/showUser1") //請求的url,請求的方法是get //get("/user/showUser2") //請求的url,請求的方法是get .contentType(MediaType.APPLICATION_FORM_URLENCODED)//數據的格式 .param("id","1") //添加參數(可以添加多個) //.param("id","3") //添加參數(可以添加多個) ) .andExpect(status().isOk()) //返回的狀態是200 .andDo(print()) //打印出請求和相應的內容 .andReturn().getResponse().getContentAsString(); //將相應的數據轉換為字符串 System.out.println("-----返回的json = " + responseString); } } 3 JUnit測試
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測試的數據庫表如下：
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測試1：參數(HttpServletRequest request,Model model)
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測試2：參數(User u,Model model)
4 幾個jar包
很多問題都來自於確少jar包。
下面給出幾個jar包的Maven依賴：
代碼清單 4-1：pom.xml (局部)
<dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <!-- 映入JSON --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.13</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.8.3</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.8.3</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.8.3</version> </dependency> 來源：https://www.cnblogs.com/oucbl/p/5943743.html