怎么用Java实现网上电商项目

这期内容当中小编将会给大家带来有关怎么用Java实现网上电商项目，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。

一、项目简述

本系统功能包括： 一款基于SpringBoot+Vue的电商项目，前后端分离项目，前台后台都有，前台商品展示购买，购物车分类，订 单查询等等，后台商品管理，订单管理，信息维护，用户管理等等。

二、项目运行

环境配置： jdk1.8 + Tomcat8.5 + Mysql + HBuilderX (WEBstORM也 行)+ Eclispe (IntelliJ idea,Eclispe,MyEclispe,Sts都支 持)。

项目技术： springboot + Maven + mybatis + Vue + Redis^K, B/S 模式+ Maven等等，附带支付宝沙箱环境以及支付环节代码。

商品相关业务代码：

 @RestController@CrossOriginpublic class ProductController {    final ProductTypeService productTypeService;    final ProductBrandService productBrandService;    final ProductService productService;    public ProductController(ProductService productService, ProductTypeService productTypeService,ProductBrandService productBrandService) {        this.productTypeService = productTypeService;        this.productBrandService = productBrandService;        this.productService = productService;    }         @RequestMapping(value = "/product/findById")    private CommonResult findById(Integer productId) {        Product product = productService.selectById(productId);        if(product!=null){            return CommonResult.success("商品查询成功",product);        }else{            return CommonResult.error("商品查询失败");        }    }    @RequestMapping(value = "/product/findByKey")    private CommonResult findByKey(String productNo) {        Product product = productService.selectByKey(productNo);        if(product!=null){            return CommonResult.success("商品查询成功",product);        }else{            return CommonResult.error("商品查询失败");        }    }    @RequestMapping(value = "/product/findIdByKey")    private CommonResult findIdByKey(String productNo) {        Integer productId = productService.selectIdByKey(productNo);        if(productId!=null){            return CommonResult.success("商品id查询成功",productId);        }else{            return CommonResult.error("商品id查询失败");        }    }    @RequestMapping(value = "/product/findCount")    private CommonResult findCount() {        Integer count = productService.selectCount();        if(count!=null){            return CommonResult.success("商品数量查询成功",count);        }else{            return CommonResult.error("商品数量查询失败");        }    }    @RequestMapping(value = "/product/existsKey")    private CommonResult existsKey(String productNo) {        Boolean isExist = productService.existsWithPrimaryKey(productNo);        if(isExist!=null){            return CommonResult.success("商品是否存在查询成功",isExist);        }else{            return CommonResult.error("商品是否存在查询失败");        }    }    @RequestMapping(value = "/product/existsType")    private CommonResult existsType(String productType) {        Boolean isExist = productService.existsProductType(productType);        if(isExist!=null){            return CommonResult.success("查询成功",isExist);        }else{            return CommonResult.error("查询失败");        }    }    @RequestMapping(value = "/product/existsBrand")    private CommonResult existsBrand(String productBrand) {        Boolean isExist = productService.existsProductBrand(productBrand);        if(isExist!=null){            return CommonResult.success("查询成功",isExist);        }else{            return CommonResult.error("查询失败");        }    }    @RequestMapping(value = "/product/findAll")    private CommonResult findAll() {        List<Product> products = productService.selectAll();        if(products!=null){            return CommonResult.success("全部商品信息查询成功",products);        }else{            return CommonResult.error("全部商品信息查询失败");        }    }    @RequestMapping(value = "/product/findAllSale")    private CommonResult findAllSale() {        List<Product> products = productService.selectAllSale();        if(products!=null){            return CommonResult.success("全部商品信息查询成功",products);        }else{            return CommonResult.error("全部商品信息查询失败");        }    }    @RequestMapping(value = "/product/findAllLikeName")    private CommonResult findAllLikeName(String keyWord) {        List<Product> products = productService.selectAllLikeName(keyWord);        if(products!=null){            return CommonResult.success("全部商品信息查询成功",products);        }else{            return CommonResult.error("全部商品信息查询失败");        }    }    @RequestMapping(value = "/product/findAllLikeType")    private CommonResult findAllLikeType(String keyWord) {        List<Product> products = productService.selectAllLikeType(keyWord);        if(products!=null){            return CommonResult.success("全部商品信息查询成功",products);        }else{            return CommonResult.error("全部商品信息查询失败");        }    }    @RequestMapping(value = "/product/findAllLikeBrand")    private CommonResult findAllLikeBrand(String keyWord) {        List<Product> products = productService.selectAllLikeBrand(keyWord);        if(products!=null){            return CommonResult.success("全部商品信息查询成功",products);        }else{            return CommonResult.error("全部商品信息查询失败");        }    }    @RequestMapping(value = "/product/findAllByType")    private CommonResult findAllByType() {        List<Map<String, Object>> maps = productService.selectAllByType();        if(maps!=null){            return CommonResult.success("商品分类信息查询成功",maps);        }else{            return CommonResult.error("商品分类信息查询失败");        }    }     @RequestMapping(value = "/product/add")    private CommonResult add(Product product) {        System.out.println(product);        if(productService.insertData(product)){            return CommonResult.success("添加商品成功",product);        }else{            return CommonResult.error("添加商品失败");        }    }     @RequestMapping(value = "/product/update")    private CommonResult update(Product product) {        if(product.getIsNew()!=null && product.getIsNew()){            product.setSaleTime(new Date());        }        if(productService.updateById(product)){            return CommonResult.success("修改商品成功",product);        }else{            return CommonResult.error("修改商品失败");        }    }     @RequestMapping(value = "/product/delete")    private CommonResult delete(Integer productId) {        if(productService.deleteById(productId)){            return CommonResult.success("商品删除成功","productId：" + productId);        }else{            return CommonResult.error("商品删除失败");        }    }         @RequestMapping(value = "/productType/add")    private CommonResult addType(ProductType productType) {        if(productTypeService.insertData(productType)){            return CommonResult.success("商品分类添加成功",productType);        }else{            return CommonResult.error("商品分类添加失败");        }    }     @RequestMapping(value = "/productType/update")    private CommonResult updateType(ProductType productType) {        if(productTypeService.updateById(productType)){            return CommonResult.success("商品分类修改成功",productType);        }else{            return CommonResult.error("商品分类修改失败");        }    }     @RequestMapping(value = "/productType/deleteById")    private CommonResult deleteTypeById(Integer typeId) {        if(productTypeService.deleteById(typeId)){            return CommonResult.success("商品分类删除成功","typeId: "+typeId);        }else{            return CommonResult.error("商品分类删除失败");        }    }     @RequestMapping(value = "/productType/deleteByName")    private CommonResult deleteTypeByName(String typeName) {        if(productTypeService.deleteByName(typeName)){            return CommonResult.success("商品分类删除成功","typeName: "+typeName);        }else{            return CommonResult.error("商品分类删除失败");        }    }     @RequestMapping(value = "/productType/existsTypeName")    private CommonResult existsTypeName(Integer typeId,String typeName) {        Boolean isExist = productTypeService.existsWithTypeName(typeId,typeName);        if(isExist!=null){            return CommonResult.success("查询成功",isExist);        }else{            return CommonResult.error("查询失败");        }    }     @RequestMapping(value = "/productType/findAll")    private CommonResult findAllType() {        List<ProductType> productTypes = productTypeService.selectAll();        if(productTypes!=null){            return CommonResult.success("商品分类查询成功",productTypes);        }else{            return CommonResult.error("商品分类查询失败");        }    }     @RequestMapping(value = "/productType/findAllName")    private CommonResult findAllTypeName() {        List<String> names = productTypeService.selectAllName();        if(names!=null){            return CommonResult.success("商品分类名称查询成功",names);        }else{            return CommonResult.error("商品分类名称查询失败");        }    }         @RequestMapping(value = "/productBrand/add")    private CommonResult addBrand(ProductBrand productBrand) {        if(productBrandService.insertData(productBrand)){            return CommonResult.success("商品品牌添加成功",productBrand);        }else{            return CommonResult.error("商品品牌添加失败");        }    }     @RequestMapping(value = "/productBrand/update")    private CommonResult updateBrand(ProductBrand productBrand) {        if(productBrandService.updateById(productBrand)){            return CommonResult.success("商品品牌修改成功",productBrand);        }else{            return CommonResult.error("商品品牌修改失败");        }    }     @RequestMapping(value = "/productBrand/deleteById")    private CommonResult deleteBrandById(Integer brandId) {        if(productBrandService.deleteById(brandId)){            return CommonResult.success("商品品牌删除成功","brandId: "+brandId);        }else{            return CommonResult.error("商品品牌删除失败");        }    }     @RequestMapping(value = "/productBrand/deleteByName")    private CommonResult deleteBrandByName(String brandName) {        if(productBrandService.deleteByName(brandName)){            return CommonResult.success("商品品牌删除成功","brandName: "+brandName);        }else{            return CommonResult.error("商品品牌删除失败");        }    }     @RequestMapping(value = "/productBrand/findAll")    private CommonResult findAllBrand() {        List<ProductBrand> productBrands = productBrandService.selectAll();        if(productBrands!=null){            return CommonResult.success("商品品牌查询成功",productBrands);        }else{            return CommonResult.error("商品品牌查询失败");        }    }     @RequestMapping(value = "/productBrand/existsBrandName")    private CommonResult existsBrandName(Integer brandId,String brandName) {        Boolean isExist = productBrandService.existsWithBrandName(brandId,brandName);        if(isExist!=null){            return CommonResult.success("查询成功",isExist);        }else{            return CommonResult.error("查询失败");        }    }     @RequestMapping(value = "/productBrand/findAllName")    private CommonResult findAllBrandName() {        List<String> names = productBrandService.selectAllName();        if(names!=null){            return CommonResult.success("商品品牌名称查询成功",names);        }else{            return CommonResult.error("商品品牌名称查询失败");        }    }}

商品规格、商品与商品规格的关联代码：

 @RestController@CrossOriginpublic class SpecsController {    final SpeCSService specsService;    final ProductSpecsService productSpecsService;    public SpecsController(SpecsService specsService,ProductSpecsService productSpecsService) {        this.specsService = specsService;        this.productSpecsService = productSpecsService;    }        @RequestMapping(value = "/specs/findById")    private CommonResult findById(Integer specsId) {        Specs specs = specsService.selectById(specsId);        if(specs!=null){            return CommonResult.success("查询成功",specs);        }else{            return CommonResult.error("查询失败");        }    }         @RequestMapping(value = "/specs/findAll")    private CommonResult findAllSpecs() {        List<Specs> specs = specsService.selectAll();        if(specs!=null){            return CommonResult.success("查询成功",specs);        }else{            return CommonResult.error("查询失败");        }    }        @RequestMapping(value = "/specs/existsSpecsName")    private CommonResult existsSpecsName(Integer specsId, String specsName, String productType) {        Boolean isExist = specsService.existsWithSpecsName(specsId,specsName,productType);        if(isExist!=null){            return CommonResult.success("查询成功",isExist);        }else{            return CommonResult.error("查询失败");        }    }     @RequestMapping(value = "/specs/findAllByType")    private CommonResult findAllSpecsByType(String productType) {        List<Specs> specs = specsService.selectAllByType(productType);        if(specs!=null){            return CommonResult.success("查询成功",specs);        }else{            return CommonResult.error("查询失败");        }    }     @RequestMapping(value = "/specs/add")    private CommonResult addSpecs(Specs specs) {        if(specs!=null){            if(specsService.insertData(specs)){                return CommonResult.success("添加成功",specs);            }else{                return CommonResult.error("添加失败");            }        }        return CommonResult.error("数据不存在");    }     @RequestMapping(value = "/specs/update")    private CommonResult updateSpecs(Specs specs) {        if(specsService.updateById(specs)){            return CommonResult.success("更新成功",specs);        }else{            return CommonResult.error("更新失败");        }    }     @RequestMapping(value = "/specs/delete")    private CommonResult deleteSpecs(Integer specsId) {        if(specsService.deleteById(specsId)){            return CommonResult.success("删除成功",specsId);        }else{            return CommonResult.error("删除失败");        }    }                @RequestMapping(value = "/productSpecs/findAll")    private CommonResult findAll() {        List<ProductSpecs> productSpecs = productSpecsService.selectAll();        if(productSpecs!=null){            return CommonResult.success("查询成功",productSpecs);        }else{            return CommonResult.error("查询失败");        }    }      @RequestMapping(value = "/productSpecs/findAllByProId")    private CommonResult findAllByProId(Integer productId) {        List<String> specsName = productSpecsService.selectAllByProId(productId);        if(specsName!=null){            return CommonResult.success("查询成功",specsName);        }else{            return CommonResult.error("查询失败");        }    }     @RequestMapping(value = "/productSpecs/add")    private CommonResult add(ProductSpecs productSpecs) {        if(productSpecs!=null){            if(productSpecsService.insertData(productSpecs)){                return CommonResult.success("添加成功",productSpecs);            }else{                return CommonResult.error("添加失败");            }        }        return CommonResult.error("数据不存在");    }     @RequestMapping(value = "/productSpecs/addBatch")    private CommonResult addBatch(Integer productId,Integer[] specsIds) {        System.out.println(productId);        System.out.println(Arrays.toString(specsIds));        if(specsIds!=null){            ProductSpecs productSpecs;            List<ProductSpecs> productSpecsList = new ArrayList<>();            for (Integer specsId : specsIds) {                productSpecs = new ProductSpecs();                productSpecs.setProductId(productId);                productSpecs.setSpecsId(specsId);                productSpecsList.add(productSpecs);            }            for (ProductSpecs specs : productSpecsList) {                System.out.println(specs);            }            if(productSpecsService.insertBatch(productSpecsList)){                return CommonResult.success("添加成功",productSpecsList);            }else{                return CommonResult.error("添加失败");            }        }        return CommonResult.error("数据不存在");    }     @RequestMapping(value = "/productSpecs/update")    private CommonResult update(ProductSpecs productSpecs) {        if(productSpecsService.updateById(productSpecs)){            return CommonResult.success("更新成功",productSpecs);        }else{            return CommonResult.error("更新失败");        }    }     @RequestMapping(value = "/productSpecs/delete")    private CommonResult delete(ProductSpecs productSpecs) {        if(productSpecsService.deleteById(productSpecs)){            return CommonResult.success("删除成功",productSpecs);        }else{            return CommonResult.error("删除失败");        }    }}

上述就是小编为大家分享的怎么用Java实现网上电商项目了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注编程网精选频道。