1. 首选我们通过 http://start.spring.io/ 网址生成一个基础spring boot 项目，截图配置如下：
点击 generate Project 按钮生成并下载基础项目
2. 将下载的项目导入到 Intellij Idea 中，截图如下：
Intellij Idea 会自动添加maven依赖
3. 创建 HelloController.java 控制器类
package com.net263; import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController; /**
* Created by Administrator on 2017/5/9.
*/ @RestController
public class HelloController { @RequestMapping("/hello")
public String index(){
return "Hello World";
}
4. 编写单元测试类
package com.net263; import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.http.MediaType;
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.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.setup.MockMvcBuilders; 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; @RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = HelloworldApplication.class)
@WebAppConfiguration
public class HelloworldApplicationTests { // 模拟调用Controller接口发起请求
private MockMvc mvc; // 初始化mvc
@Before
public void setUp(){
mvc = MockMvcBuilders.standaloneSetup(new HelloController()).build();
} // 测试hello 接口
@Test
public void testHello() throws Exception{
mvc.perform(MockMvcRequestBuilders.get("/hello").
accept(MediaType.APPLICATION_JSON)).
andExpect(status().isOk()).
andExpect(content().string(equalTo("Hello World")));
} }
5. 启动Srping boot 应用程序可以通过 http://localhost:8080/hello 请求访问到我们的Hello Restful API，截图如下：
6. 运行单元测试类可做单元测试：