注册——控制层

5.控制层

5.1json数据返回状态

package com.cy.store.utils;
​
import java.io.Serializable;
​
public class JsonResult<E> implements Serializable {
​
    private Integer state;
​
    private String message;
​
    private E data;
​
    public JsonResult(Integer state, E data) {
        this.state = state;
        this.data = data;
    }
​
    public JsonResult(Throwable e) {
        this.message = e.getMessage();
    }
​
    public JsonResult(Integer state) {
        this.state = state;
    }
​
    public JsonResult() {
    }
​
    public Integer getState() {
        return state;
    }
​
    public void setState(Integer state) {
        this.state = state;
    }
​
    public String getMessage() {
        return message;
    }
​
    public void setMessage(String message) {
        this.message = message;
    }
​
    public E getData() {
        return data;
    }
​
    public void setData(E data) {
        this.data = data;
    }
}
​

5.2UserController

package com.cy.store.controller;
​
​
import com.cy.store.entity.User;
import com.cy.store.service.IUserService;
import com.cy.store.service.ex.InsertException;
import com.cy.store.service.ex.UsernameDeplicatedException;
import com.cy.store.utils.JsonResult;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
​
//@Controller
@RestController
@RequestMapping("users")
public class UserController extends BaseController{
​
​
    @Autowired
    private IUserService iUserService;
​
    @RequestMapping("reg")
    public JsonResult<Void> reg(User user)
    {
        iUserService.reg(user);
        return new JsonResult<>(OK);
    }
​
    /*@RequestMapping("reg")
    public JsonResult<Void> reg(User user)
    {
        JsonResult<Void> result = new JsonResult<>();
​
        try {
            iUserService.reg(user);
            result.setState(200);
            result.setMessage("注册成功");
        } catch (UsernameDeplicatedException e) {
            result.setState(4000);
            result.setMessage("用户名占用");
        }
        catch (InsertException e)
        {
            result.setState(5000);
            result.setMessage("未知异常");
        }
        return result;
    }*/
​
}
​

5.3BaseController

package com.cy.store.controller;
​
import com.cy.store.service.ex.InsertException;
import com.cy.store.service.ex.ServiceExcepiton;
import com.cy.store.service.ex.UsernameDeplicatedException;
import com.cy.store.utils.JsonResult;
import org.springframework.web.bind.annotation.ExceptionHandler;
​
public class BaseController {
    public static final int OK = 200;
​
    @ExceptionHandler(ServiceExcepiton.class) //用于统一处理抛出的异常
    public JsonResult<Void> handle(Throwable e)
    {
        JsonResult<Void> result = new JsonResult<>();
​
        if(e instanceof UsernameDeplicatedException)
        {
            result.setState(4000);
            result.setMessage("用户名已经占用");
        }
        else if (e instanceof InsertException)
        {
            result.setState(5000);
            result.setMessage("注册时候产生未知异常");
        }
        return result;
    }
​
}
​

标签：控制,JsonResult,cy,result,注册,import,com,public
来源： https://www.cnblogs.com/shuangshuangzi/p/15977931.html