首页 > 代码库 > Spring Boot构建RESTful API

Spring Boot构建RESTful API

2024-09-06 03:11:35   217人阅读

  • @Controller：修饰class，用来创建处理http请求的对象
  • @RestController：Spring4之后加入的注解，原来在@Controller中返回json需要@ResponseBody来配合，如果直接用@RestController替代@Controller就不需要再配置@ResponseBody，默认返回json格式。
  • @RequestMapping：配置url映射
  • RESTful API具体设计如下：
请求类型URL功能说明
GET /users 查询用户列表
POST /users 创建一个用户
GET /users/id 根据id查询一个用户
PUT /users/id 根据id更新一个用户
DELETE /users/id
  1. 根据id删除一个用户

User实体定义：

     private Long id; 
    private String name; 
    private Integer age; 

    // 省略setter和getter

User  restful接口声明

@RequestMapping(value = http://www.mamicode.com/"/users")
public interface UserRestService {
    @RequestMapping(value = "/", method = RequestMethod.GET)
    List<User> getUserList();

    @RequestMapping(value = "/", method = RequestMethod.POST)
    String postUser(@ModelAttribute User user);

    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    User getUser(@PathVariable Long id);

    @RequestMapping(value="/{id}", method=RequestMethod.PUT)
     String putUser(@PathVariable Long id, @ModelAttribute User user);

    @RequestMapping(value="/{id}", method=RequestMethod.DELETE)
    String deleteUser(@PathVariable Long id);
}

接口实现

@RestController
public class UserRestServiceImpl implements  UserRestService {

    static Map<Long, User> users = Collections.synchronizedMap(new HashMap<Long, User>());

    @Override
    public List<User> getUserList() {
        List<User> r = new ArrayList<User>(users.values());
        return r;
    }

    @Override
    public String postUser(@ModelAttribute User user) {
        users.put(user.getId(), user);
        return "success";
    }

    @Override
    public User getUser(@PathVariable Long id) {
        return users.get(id);
    }

    @Override
    public String putUser(@PathVariable Long id, @ModelAttribute User user) {
        User u = users.get(id);
        u.setName(user.getName());
        u.setAge(user.getAge());
        users.put(id, u);
        return "success";
    }

    @Override
    public String deleteUser(@PathVariable Long id) {
        users.remove(id);
        return "success";
    }
}

验证：

以创建用户为例

技术分享

response

技术分享

 

Spring Boot构建RESTful API


联系
我们