ssm项目中使用spring单元测试模拟请求测试mvc接口

<project xmlns="http://maven.apache.org/POM/4.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.vhukze</groupId>
  <artifactId>ssm-curd</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <dependencies>
  <!-- springMVC -->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>5.1.5.RELEASE</version>
  </dependency>
  <!-- 分页插件 -->
  <dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>5.1.11</version>
  </dependency>
  <!-- spring-jdbc -->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.1.5.RELEASE</version>
  </dependency>
  <!-- spring的切面 -->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aspects</artifactId>
    <version>5.1.5.RELEASE</version>
  </dependency>
  <!-- spring 单元测试 -->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>5.1.5.RELEASE</version>
    <!-- <scope>test</scope> -->
  </dependency>
  <!-- mybatis -->
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.5.1</version>
  </dependency>
  <!-- mybatis的spring适配包 -->
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>2.0.1</version>
  </dependency>
  <!-- c3p0连接池 -->
  <dependency>
    <groupId>com.mchange</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.5.2</version>
  </dependency>
  <!-- mysql驱动包 -->
  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.15</version>
  </dependency>
  <!-- jstl -->
  <dependency>
    <groupId>jstl</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
  </dependency>
  <!-- servlet-api -->
  <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>4.0.1</version>
    <scope>provided</scope>
  </dependency>
  <!-- junit -->
  <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
    <scope>test</scope>
  </dependency>
  <!-- mybatis generator 逆向工程 -->
  <dependency>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-core</artifactId>
    <version>1.4.0</version>
  </dependency>
  </dependencies>
</project>
测试类
ContextConfiguration注解中填写spring配置文件和SpringMVC配置文件的位置
package com.vhukze.test;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mock.web.MockHttpServletRequest;
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.MvcResult;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;
import com.github.pagehelper.PageInfo;
import com.vhukze.bean.Employee;
/**
 * @author zsz
 * @date 2020年4月1日
 * @description
 */
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration(locations = { "classpath:applicationContext.xml",
  "file:src/main/webapp/WEB-INF/dispatcherServlet-servlet.xml" })
public class MVCTest {
  // 传入SpringMVC的IOC容器
  @Autowired
  WebApplicationContext context;
  // 虚拟mvc请求 获取到处理结果
  MockMvc mockMvc;
  /**
  * 初始化
  */
  @Before
  public void initMockMvc() {
  mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
  }
  @Test
  public void testPage() throws Exception {
  // 模拟请求并拿到返回值
  MvcResult result = mockMvc.perform(MockMvcRequestBuilders.get("/emps").param("pageNum", "1")).andReturn();
  System.out.println(111);
  //请求成功后，请求域中会有pageInfo，取出pageInfo验证
  MockHttpServletRequest request = result.getRequest();
  PageInfo pageInfo = (PageInfo) request.getAttribute("pageInfo");
  System.out.println("当前页："+pageInfo.getPageNum());
  System.out.println("总页码："+pageInfo.getPages());
  System.out.println("总记录数："+pageInfo.getTotal());
  System.out.println("在页面需要连续显示的页码");
  int[] nums = pageInfo.getNavigatepageNums();
  for(int num : nums) {
    System.out.print(" "+num);
  }
  List<Employee> list = pageInfo.getList();
  for(Employee emp : list) {
    System.out.println("id:"+emp.getEmpId()+"=======name:"+emp.getEmpName());
  }
  }