【死磕springboot2.0】springboot基于web开发

心已赠人 2022-04-17 02:17 169阅读 0赞

***声明，使用 maven3.5.4，springboot2.0，JDK8 ，idea2018.2***

*模块目录结构：*  
![在这里第三方图片描述][20181111230046431.png]

*main 主方法：*

@SpringBootApplication
    public class WebApplication { 
    	public static void main(String[] args) { 
    		SpringApplication.run(WebApplication.class, args);
    	}
    }

*model实体类：*

/** * @auther SyntacticSugar * @data 2018/11/11 0011下午 10:03 */
    public class User { 
        private String name;
        private int age;
        private String pass;
        // getter setter 
    .....
    }

*controller层，定义了单个对象，list集合，以及传参情况下的 get 、post请求；*

package com.neo.springbootweb.web;
    /** * @auther SyntacticSugar * @data 2018/11/11 0011下午 10:04 */
    
    // bug一次， @controller需要配合@requestbody
    
    @RestController
    public class WebController { 
    
        // 定义method 、 path
    
        @RequestMapping(name = "/getUser", method = RequestMethod.POST)
        public User getUser() { 
            User user = new User();
            user.setAge(12);
            user.setName("小明");
            user.setPass("123456");
            return user;
        }
    
        // getUsers 获取list 集合
    
        @RequestMapping(value = "/getUsers",method = RequestMethod.POST)
        public List<User> getUsers() { 
            ArrayList<User> users = new ArrayList<>();
    
            User user1 = new User();
            user1.setName("neo");
            user1.setAge(30);
            user1.setPass("neo123");
            users.add(user1);
            User user2 = new User();
            user2.setName("小明");
            user2.setAge(12);
            user2.setPass("123456");
            users.add(user2);
    
            return  users;
        }
    
        /** * 以下两种方式都可以；@GetMapping("get/{name}") 简化写法 * @param name * @return */
    // @RequestMapping(value = "get/{name}",method = RequestMethod.GET)
        @GetMapping("get/{name}")
        public  String   getname(@PathVariable("name") String name ){ 
            return  name;
        }
    }

*test方法,前两个单元测试 返回 json格式的字符串，controller层第三个方法测试，在浏览器 url 访问；[http://localhost:8080/get/hello][http_localhost_8080_get_hello]  
返回hello说明成功：*

package com.neo.springbootweb;
    
    import com.neo.springbootweb.web.WebController;
    import org.junit.Before;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.test.context.junit4.SpringRunner;
    import org.springframework.test.web.servlet.MockMvc;
    import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
    import org.springframework.test.web.servlet.setup.MockMvcBuilders;
    
    @RunWith(SpringRunner.class)
    @SpringBootTest
    public class WebApplicationTests { 
    
    //MockMvcBuilders.standaloneSetup(...) 中的参数需要导入 controller的实例
        private MockMvc mockMvc;
        @Before
        public void  setUp(){ 
            mockMvc= MockMvcBuilders.standaloneSetup(new WebController()).build();
        }
        /** * .andReturn().getResponse().getContentAsString() * 获取请求的返回信息 * @throws Exception */
        @Test
        public void getUser() throws Exception { 
            String contentAsString = mockMvc.perform(MockMvcRequestBuilders.post("/getUser")).andReturn().getResponse().getContentAsString();
            System.out.println(contentAsString);
        }
        @Test
        public void getUsers() throws Exception { 
            String contentAsString = mockMvc.perform(MockMvcRequestBuilders.post("/getUsers")).andReturn().getResponse().getContentAsString();
            System.out.println(contentAsString);
        }
    }

[20181111230046431.png]: /images/20220417/8b823bf741f64c5b92187b00384f89b7.png
[http_localhost_8080_get_hello]: http://localhost:8080/get/hello