电商项目第一天：项目搭建(续)-优快云博客

这是一个关于Spring Boot中BrandController的实现，用于处理品牌相关的业务操作，包括查询所有品牌、按ID查询、新增、修改、删除以及分页和条件搜索。Controller通过@Autowired注解注入BrandService来执行这些操作，并返回包含状态码和信息的消息Result。

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控制层：BrandController

package com.changgou.goods.controller;

import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.goods.pojo.Brand;
import com.changgou.goods.service.BrandService;
import com.github.pagehelper.PageInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageImpl;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/brand")
@CrossOrigin
public class BrandController {

    @Autowired
    private BrandService brandService;

    /**
     * 查询所有
     * @return
     */
    @GetMapping
    public Result<Brand> findAll(){
        List<Brand> brandList = brandService.findAll();
        return new Result<Brand>(true, StatusCode.OK,"查询成功",brandList);
    }

    /**
     * 根据ID查询
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public Result<Brand> findById(@PathVariable("id")Integer id){
        //根据ID查询
        Brand brand = brandService.findById(id);
        return new Result<Brand>(true,StatusCode.OK,"查询成功",brand);
    }

    /**
     * 新增品牌数据
     * @param brand
     * @return
     */
    @PostMapping
    public Result add(@RequestBody Brand brand){
        brandService.add(brand);
        return new Result(true,StatusCode.OK,"添加成功");
    }

    /**
     * 修改品牌数据
     * @param brand
     * @param id
     * @return
     */
    @PutMapping(value = "/{id}")
    public Result update(@RequestBody Brand brand,@PathVariable("id") Integer id){
        //设置id
        brand.setId(id);
        return new Result(true,StatusCode.OK,"修改成功");
    }

    /**
     * 根据ID删除品牌
     */
    @DeleteMapping(value = "/{id}")
    public Result delete(@PathVariable Integer id){
        brandService.delete(id);
        return new Result(true,StatusCode.OK,"删除成功");
    }

    /**
     * 多条件搜多品牌数据
     */
    @PostMapping(value = "/search")
    public Result<Brand> findList(@RequestBody(required = false) Brand brand){
        List<Brand> list = brandService.findList(brand);
        return new Result(true,StatusCode.OK,"查询成功",list);
    }

    /**
     * 分页搜索实现
     */
    @GetMapping(value = "/search/{page}/{size}")
    public Result<PageInfo> findPage(@PathVariable("page")int page,@PathVariable("size")int size){
        //分页查询
        PageInfo<Brand> pageInfo = brandService.findPage(page,size);
        return new Result<PageInfo>(true,StatusCode.OK,"查询成功",pageInfo);
    }

    /**
     * 分页搜索实现
     */
    @PostMapping(value = "/search/{page}/{size}")
    public Result<PageInfo> findPage(@RequestBody(required = false) Brand brand,@PathVariable("page")int page,@PathVariable("size")int size){
        //执行搜索
        PageInfo<Brand> pageInfo = brandService.findPage(brand,page,size);
        return new Result(true,StatusCode.OK,"查询成功",pageInfo);
    }
}