SpringBoot电商项目进阶Day5

最新推荐文章于 2025-11-25 12:51:57 发布

原创最新推荐文章于 2025-11-25 12:51:57 发布 · 173 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#spring boot #java #spring

日志同时被 2 个专栏收录

53 篇文章

订阅专栏

SpringBoot

13 篇文章

订阅专栏

本文介绍了SpringBoot电商项目中的商品管理Controller的实现，包括商品添加、更新、删除、批量操作及图片上传等功能，还涉及到了订单状态提示、IP地址处理和时区异常的解决。此外，学习了字典树（Trie）的数据结构，展示了如何进行单词存储和查找。

SpringBoot电商项目进阶Day5

学习并且完成了对列表元素的校验。@Validated ValidList等

对对于订单状态提示和IP地址写法进行了升级

同时完成了订单数变化趋势图的接口，并且解决了时区异常的情况

package com.imooc.mall.controller;

import com.github.pagehelper.PageInfo;
import com.imooc.mall.Service.ProductService;
import com.imooc.mall.common.ApiRestResponse;
import com.imooc.mall.common.Constant;
import com.imooc.mall.common.ValidList;
import com.imooc.mall.exception.ImoocMallException;
import com.imooc.mall.exception.ImoocMallExceptionEnum;
import com.imooc.mall.model.pojo.Product;
import com.imooc.mall.model.request.AddProductReq;
import com.imooc.mall.model.request.UpdateProductReq;
import io.swagger.annotations.ApiOperation;
import net.coobird.thumbnailator.Thumbnails;
import net.coobird.thumbnailator.geometry.Positions;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import javax.validation.Valid;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import java.util.UUID;

/**
 * 描述：   后台商品管理Controller
 */
@RestController
@Validated
public class ProductAdminController {
    @Autowired
    ProductService productService;

    @Value("${file.upload.uri}")
    String uri;
    @PostMapping("/admin/product/add")
    public ApiRestResponse addProduct(@Valid @RequestBody AddProductReq addProductReq) {
        productService.add(addProductReq);
        return ApiRestResponse.success();
    }

    @PostMapping("/admin/upload/file")
    public ApiRestResponse upload(HttpServletRequest httpServletRequest, @RequestParam("file") MultipartFile file) {
        String fileName = file.getOriginalFilename();
        String suffixName = fileName.substring(fileName.lastIndexOf("."));
        //生成文件名称UUID
        UUID uuid = UUID.randomUUID();
        String newFileName = uuid.toString() + suffixName;
        //创建文件
        File fileDirectory = new File(Constant.FILE_UPLOAD_DIR);
        File destFile = new File(Constant.FILE_UPLOAD_DIR + newFileName);
        createFile(file, fileDirectory, destFile);
        String address = uri;
        return ApiRestResponse.success("http://"+address+"/images/"+newFileName);
    }

    private URI getHost(URI uri) {
        URI effectiveURI;
        try {
            effectiveURI = new URI(uri.getScheme(), uri.getUserInfo(), uri.getHost(), uri.getPort(), null, null, null);
        } catch (URISyntaxException e) {
            effectiveURI=null;
        }
        return effectiveURI;
    }
    @ApiOperation("后台更新商品")
    @PostMapping("/admin/product/update")
    public ApiRestResponse updateProduct(@Valid @RequestBody UpdateProductReq updateProductReq) {
        Product product = new Product();
        BeanUtils.copyProperties(updateProductReq, product);
        productService.update(product);
        return ApiRestResponse.success();
    }
    @ApiOperation("后台删除商品")
    @PostMapping("/admin/product/delete")
    public ApiRestResponse deleteProduct(@RequestParam Integer id) {
        productService.delete(id);
        return ApiRestResponse.success();
    }
    @ApiOperation("后台批量上下架接口")
    @PostMapping("/admin/product/batchUpdateSellStatus")
    public ApiRestResponse batchUpdateSellStatus(@RequestParam Integer[] ids,@RequestParam Integer sellStatus) {
        productService.batchUpdateSellStatus(ids, sellStatus);
        return ApiRestResponse.success();
    }
    @ApiOperation("后台商品列表接口")
    @GetMapping("/admin/product/list")
    public ApiRestResponse list(@RequestParam Integer pageNum,@RequestParam Integer pageSize) {
        PageInfo pageInfo = productService.listForAdmin(pageNum, pageSize);
        return ApiRestResponse.success(pageInfo);
    }
    @ApiOperation("后台批量上传商品接口")
    @PostMapping("/admin/upload/product")
    public ApiRestResponse uploadProduct(@RequestParam("file") MultipartFile multipartFile) throws IOException {
        String fileName = multipartFile.getOriginalFilename();
        String suffixName = fileName.substring(fileName.lastIndexOf("."));
        UUID uuid = UUID.randomUUID();
        String newFileName = uuid.toString() + suffixName;
        //创建文件
        File fileDirectory = new File(Constant.FILE_UPLOAD_DIR);
        File destFile = new File(Constant.FILE_UPLOAD_DIR + newFileName);
        createFile(multipartFile, fileDirectory, destFile);
        productService.addProductByExcel(destFile);
        return ApiRestResponse.success();
    }
    @PostMapping("/admin/upload/image")
    public ApiRestResponse uploadImage(HttpServletRequest httpServletRequest, @RequestParam("file") MultipartFile file) throws IOException {
        String fileName = file.getOriginalFilename();
        String suffixName = fileName.substring(fileName.lastIndexOf("."));
        //生成文件名称UUID
        UUID uuid = UUID.randomUUID();
        String newFileName = uuid.toString() + suffixName;
        //创建文件
        File fileDirectory = new File(Constant.FILE_UPLOAD_DIR);
        File destFile = new File(Constant.FILE_UPLOAD_DIR + newFileName);
        createFile(file, fileDirectory, destFile);
        Thumbnails.of(destFile).size(Constant.IMAGE_SIZE, Constant.IMAGE_SIZE).watermark(Positions.BOTTOM_RIGHT, ImageIO.read(new File(Constant.FILE_UPLOAD_DIR + Constant.WATER_MARK_JPG)), Constant.IMAGE_OPACITY).toFile(new File(Constant.FILE_UPLOAD_DIR + newFileName));
        String address = uri;
        return ApiRestResponse.success("http://"+address+ "/images/" + newFileName);
    }

    private void createFile(@RequestParam("file") MultipartFile file, File fileDirectory, File destFile) {
        if (!fileDirectory.exists()) {
            if (!fileDirectory.mkdir()) {
                throw new ImoocMallException(ImoocMallExceptionEnum.MKDIR_FAILED);
            }
        }
        try {
            file.transferTo(destFile);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @ApiOperation("后台批量更新商品")
    @PostMapping("/admin/product/batchUpdate")
    public ApiRestResponse batchUpdateProduct(@Valid @RequestBody List<UpdateProductReq> updateProductReqList) {
        for (int i = 0; i < updateProductReqList.size(); i++) {
            UpdateProductReq updateProductReq = updateProductReqList.get(i);
            //方法一，手动校验
            if (updateProductReq.getPrice() < 1) {
                throw new ImoocMallException(ImoocMallExceptionEnum.PRICE_TOO_LOW);
            }
            if (updateProductReq.getStock() > 10000) {
                throw new ImoocMallException(ImoocMallExceptionEnum.STOCK_TOO_MANY);
            }
            Product product = new Product();
            BeanUtils.copyProperties(updateProductReqList, product);
            productService.update(product);
        }
        return ApiRestResponse.success();
    }
    @ApiOperation("后台批量更新商品，ValidList验证")
    @PostMapping("/admin/product/batchUpdate2")
    public ApiRestResponse batchUpdateProduct2(@Valid @RequestBody ValidList<UpdateProductReq> updateProductReqList) {
        for (int i = 0; i < updateProductReqList.size(); i++) {
            UpdateProductReq updateProductReq = updateProductReqList.get(i);
            Product product = new Product();
            BeanUtils.copyProperties(updateProductReq, product);
            productService.update(product);
        }
        return ApiRestResponse.success();
    }
    @ApiOperation("后台批量更新商品，@Validated验证")
    @PostMapping("/admin/product/batchUpdate3")
    public ApiRestResponse batchUpdateProduct3(@Valid @RequestBody List<UpdateProductReq> updateProductReqList) {
        for (int i = 0; i < updateProductReqList.size(); i++) {
            UpdateProductReq updateProductReq = updateProductReqList.get(i);
            Product product = new Product();
            BeanUtils.copyProperties(updateProductReq, product);
            productService.update(product);
        }
        return ApiRestResponse.success();
    }
}

字典树Trie

学习了什么是字典树

import java.util.TreeMap;

public class Trie {
    private class Node {
        public boolean isWord;
        public TreeMap<Character, Node> next;

        public Node(boolean isWord) {
            this.isWord = isWord;
            next = new TreeMap<>();
        }

        public Node() {
            this(false);
        }
    }

    private Node root;
    private int size;

    public Trie() {
        root = new Node();
        size = 0;
    }
    //获得Trie中存储的单词数量
    public int getSize() {
        return size;
    }

    //向Trie中添加一个新的单词
    public void add(String word) {
        Node cur = root;
        for (int i = 0; i < word.length(); i++) {
            char c = word.charAt(i);
            if (cur.next.get(c) == null) {
                cur.next.put(c, new Node());
            }
            cur = cur.next.get(c);
        }
        if(!cur.isWord) {
            cur.isWord = true;
            size++;
        }
    }
}