REST

特点

输入输出都是JSON的API接口

作用

便于第三方调用

便于使用js进行交互

编写RestController

package eternal.fire;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Map;

@RestController
@RequestMapping("/api")
public class ApiController {
    @Autowired
    UserService userService;

    @GetMapping("/users")
    public List<User> users() {
        return userService.getUsers();
    }
    
    @GetMapping("/users/{id}")
    public User user(@PathVariable("id") long id) {
        return userService.getUserById(id);
    }
    
    @PostMapping("/signin")
    public Map<String, Object> signin(@RequestBody SignInRequest signInRequest) {
        try {
            User user = userService.signin(signInRequest.email, signInRequest.password);
            return Map.of("user", user);
        } catch (Exception e) {
            return Map.of("error", "SIGNIN_FAILED", "message", e.getMessage());
        }
    }
    
    public static class SignInRequest{
        public String email;
        public String password;
    }

}

精细化控制

防止密码明文输出

@JsonProperty(access = Access.WRITE_ONLY)
public String getPassword() {
    return password;
}