第一次搭建SSM框架，整合SpringMVC完成后进行Controller测试，找资料并解决问题。

下图是我的完整目录：

1 建立UserController类

代码清单 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：参数不同

    {

        int userId = u.getId();

        User user = this.userService.getUserById(userId);

        model.addAttribute("user", user);

        return user.getUserName();

    }

}

2 建立测试类

代码清单 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()  //这个方法在每个方法执行之前都会执行一遍

   public void setup()

   {

       mockMvc = MockMvcBuilders.webAppContextSetup(wac).build();  //初始化MockMvc对象

   }

   @Test

   public void getAllCategoryTest() throws Exception

   {

       String responseString = mockMvc.perform

           (

               get("/user/showUser1")          //请求的url,请求的方法是get

               //get("/user/showUser2")          //请求的url,请求的方法是get

               .contentType(MediaType.APPLICATION_FORM_URLENCODED)//数据的格式

               .param("id","1")   //添加参数(可以添加多个)

               //.param("id","3")   //添加参数(可以添加多个)

           )

           .andExpect(status().isOk())    //返回的状态是200

           .andDo(print())         //打印出请求和相应的内容

           .andReturn().getResponse().getContentAsString();   //将相应的数据转换为字符串

       System.out.println("-----返回的json = " + responseString);

   }

}

3 JUnit测试

• 测试的数据库表如下：

• 测试1：参数(HttpServletRequest request,Model model)

• 测试2：参数(User u,Model model)

4 几个jar包

很多问题都来自于确少jar包。

下面给出几个jar包的Maven依赖：

代码清单 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>

参考：

1. Junit测试Controller（MockMVC使用），传输@RequestBody数据解决办法

2. 基于Spring MVC做单元测试（一）——使用Spring Test框架

3. junit 测试 springmvc controller

4. spring-mvc junit test