博客

Config：配置层，进行spring boot项目的一些配置。

package com.jacks.login.config;

import org.springframework.context.annotation.Configuration;


import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
@CrossOrigin
public class Config implements WebMvcConfigurer {
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("login");
        registry.addViewController("/r").setViewName("regist");
        registry.addViewController("/s").setViewName("successful");
        registry.addViewController("/m").setViewName("mianze");
        registry.addViewController("/b").setViewName("blindbox");
        registry.addViewController("/bt").setViewName("Blindboxtakeout");
        registry.addViewController("/l").setViewName("lucky draw");

    }
}

Controller层：管理层，负责与前端进行交互，接受前端请求并传入下一层。

package com.jacks.login.controller;

import com.jacks.login.pojo.Diary;
import com.jacks.login.service.Mainservice;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping(value = "main")
@CrossOrigin
public class MainController {
    @Autowired
    private Mainservice mainservice;
    @PostMapping("/diary" )
    public String diary(Diary diary){return mainservice.diary(diary);}








}

Service接口：与Controller层连接，其方法将在ServiceImpl层中实现。

package com.jacks.login.service;

import com.jacks.login.pojo.Diary;

public interface Mainservice {
    String diary(Diary diary);
}

ServiceImpl层：实现具体的方法和进行逻辑处理等，处理完后将数据返回前端。

package com.jacks.login.service.impl;

import com.jacks.login.mapper.MainMapper;

import com.jacks.login.pojo.Diary;
import com.jacks.login.service.Mainservice;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class MainServiceImpl implements Mainservice {
    @Autowired
    MainMapper mainmapper;
    @Override
    public String diary(Diary diary){
        String diary1=mainmapper.findByName(diary.getUsername());
        if(diary1!=null)
        return diary1;
        else return "该用户未注册";
    }

}

Mapper层：调用Mapper.xml中的sqL方法

package com.jacks.login.mapper;


import com.jacks.login.pojo.Diary;


import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
@Mapper
public interface MainMapper {
    List<Diary> findAll();
    String findByName(String diary);


}

Mapper.xml:写SQL语句的位置