Java应用开发（中、高级）课件 任务3.3 实现菜品管理模块

任务3.实现菜品管理模块任务描述本任务将实现菜品(菜品)管理模块，分别完成菜品列表、菜品详情、添加菜品、修改菜品、删除菜品等功能。知识准备1.前端开发流程需求->原型->开发->测试->上线2.前端目录结构（1）模块化JS模块化：AMD、CommonJS、UMD、ES6ModuleCSS模块化：less、sass、stylus、postCSS、cssmodule资源模块化（2）组件化项目组定制化ui组件公共功能组件，如404，无权限公共插件模块间共用组件（3）静态资源管理非模块化资源模块化资源--与模块一起进行统一管理（4）规范化编码规范接口规范

git使用规范CodeReviewUI元素规范（5）国际化：减少层级引用，提高复用性3.测试（1）SIT测试环境

测试环境，前后端分离，后台CORS，前台通过代理跨域。最好采用sourcemap方式，利于追踪bug。一般测试通过，bug单清零，会转UAT测试。（2）UAT测试环境

用户验收测试，一般通过后，就准备部署上线。4.部署webpack进行打包后，发布到服务器上，项目上线。当然，上线前，要进行性能优化，例如配置缓存，静态资源CDN部署。任务实施步骤1：实现菜品管理模块后台(1)在“com.chinasofti.ordersys.model”包中，新建DishesInfo类，用于实现菜品信息视图对象。Ø代码如下：/***Copyright2015ChinaSoftInternationalLtd.Allrightsreserved.*/packagecom.chinasofti.ordersys.model;

/***<p>*Title:DishesInfo*</p>*<p>*Description:菜品信息VO*</p>*<p>*Copyright:Copyright(c)2015*</p>*<p>*Company:ChinaSoftInternationalLtd.*</p>**@authoretc*@version1.0*/publicclassDishesInfo{ /** *菜品ID **/ privateintdishesId; /** *菜品名称 **/ privateStringdishesName; /** *菜品描述 **/ privateStringdishesDiscript; /** *菜品图片 **/ privateStringdishesImg; /** *菜品详细描述文本 **/ privateStringdishesTxt; /** *是否推荐菜品标识 **/ privateintrecommend; /** *菜品单价 **/ privatefloatdishesPrice; privatefloatdishesPrice;

publicintgetDishesId(){ returndishesId; }

publicvoidsetDishesId(intdishesId){ this.dishesId=dishesId; }

publicStringgetDishesName(){ returndishesName; }

publicvoidsetDishesName(StringdishesName){ this.dishesName=dishesName; }

publicStringgetDishesDiscript(){ returndishesDiscript; }

publicvoidsetDishesDiscript(StringdishesDiscript){ this.dishesDiscript=dishesDiscript; }

publicStringgetDishesImg(){ returndishesImg; } publicvoidsetDishesImg(StringdishesImg){ this.dishesImg=dishesImg; }

publicStringgetDishesTxt(){ returndishesTxt; }

publicvoidsetDishesTxt(StringdishesTxt){ this.dishesTxt=dishesTxt; }

publicintgetRecommend(){ returnrecommend; }

publicvoidsetRecommend(intrecommend){ this.recommend=recommend; }

publicfloatgetDishesPrice(){ returndishesPrice; }

publicvoidsetDishesPrice(floatdishesPrice){ this.dishesPrice=dishesPrice; }}(2)在“com.chinasofti.ordersys.api.admin”包中，新建AdminDishesController类，用于实现菜品管理模块接口。Ø

代码如下：packagecom.chinasofti.ordersys.api.admin;

importmon.result.PageResults;importmon.result.Results;importcom.chinasofti.ordersys.model.DishesInfo;importcom.chinasofti.ordersys.service.admin.DishesService;importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.security.access.prepost.PreAuthorize;importorg.springframework.web.bind.annotation.GetMapping;importorg.springframework.web.bind.annotation.RequestMapping;importorg.springframework.web.bind.annotation.RestController;

importjava.util.List;@PreAuthorize("hasRole('1')")@RestController@RequestMapping("/admin/dishes")publicclassAdminDishesController{ @AutowiredDishesServiceservice;

publicDishesServicegetService(){ returnservice; }

publicvoidsetService(DishesServiceservice){ this.service=service; }

@RequestMapping("/adddishes") publicResults<DishesInfo>addDishes(DishesInfoinfo){ //执行添加菜品操作 service.addDishes(info);

returnResults.success(info); } @RequestMapping("/deletedishes") publicResults<DishesInfo>deleteDishes(IntegerdishesId){ service.deleteDishesById(dishesId); returnResults.success(); }

@GetMapping("/get") publicResults<DishesInfo>getDishes(IntegerdishesId){ returnResults.success(service.getDishesById(dishesId)); }

@RequestMapping("/getdishesbypage") publicPageResults<DishesInfo>getDishesInfoByPage(intpage){

//获取最大页码数 intmaxPage=service.getMaxPage(8); //对当前的页码数进行纠错，如果小于1，则直接显示第一页的内容 page=page<1?1:page; //对当前的页码数进行纠错，如果大于最大页码，则直接显示最后一页的内容 page=page>maxPage?maxPage:page; //进行分页数据查询 List<DishesInfo>list=service.getDishesInfoByPage(page,8); //尝试将结果结构化 returnPageResults.success(list,page,maxPage); }

@RequestMapping("/modifydishes") publicResults<DishesInfo>modifyDishes(DishesInfoinfo){

//执行菜品信息修改工作 service.modifyDishes(info);

//跳转到菜品管理界面 returnResults.success(info);

}

@RequestMapping("/toprecommend") publicResults<List<DishesInfo>>getTop4RecommendDishes(){

//获取头4条推荐菜品信息列表 List<DishesInfo>list=service.getTop4RecommendDishes(); //尝试将结果结构化 returnResults.success(list); }}(3)在“com.chinasofti.ordersys.service.admin”包中，新建DishesService类，用于实现菜品管理服务对象。Ø代码如下：/***Copyright2015ChinaSoftInternationalLtd.Allrightsreserved.*/packagecom.chinasofti.ordersys.service.admin;

importcom.chinasofti.ordersys.mapper.DishesInfoMapper;importcom.chinasofti.ordersys.model.DishesInfo;importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.stereotype.Service;

importjava.util.List;/***<p>*Title:DishesService*</p>*<p>*Description:菜品管理服务对象*</p>*<p>*Copyright:Copyright(c)2015*</p>*<p>*Company:ChinaSoftInternationalLtd.*</p>**@authoretc*@version1.0*/@ServicepublicclassDishesService{ @AutowiredDishesInfoMappermapper;

publicDishesInfoMappergetMapper(){ returnmapper; }

publicvoidsetMapper(DishesInfoMappermapper){ this.mapper=mapper; }

/** *分页获取菜品数据的方法 * *@parampage *要获取数据的页号 *@parampageSize *每页显示的条目数 *@return当前页的菜品数据列表 **/ publicList<DishesInfo>getDishesInfoByPage(intpage,intpageSize){ //获取带有连接池的数据库模版操作工具对象 intfirst=(1)*pageSize; //返回结果 returnmapper.getDishesInfoByPage(first,pageSize);

}

/** *获取菜品信息的最大页数 * *@parampageSize *每页显示的条目数 *@return当前数据库中数据的最大页数 **/ publicintgetMaxPage(intpageSize){

Longrows=mapper.getMaxPage(); //返回最大页数 return(int)((rows.longValue()-1)/pageSize+1); } /** *根据菜品ID值删除菜品信息的方法 * *@paramdishesId *要删除的菜品Id **/ publicvoiddeleteDishesById(IntegerdishesId){ //获取带有连接池的数据库模版操作工具对象 mapper.deleteDishesById(dishesId); }

/** *添加菜品的方法 * *@paraminfo *需要添加的菜品信息 **/ publicvoidaddDishes(DishesInfoinfo){ mapper.addDishes(info);

} /** *根据dishesId获取菜品详细信息的方法 * *@paramdishesId *要获取信息的特定菜品Id *@return返回该id的菜品详细信息 **/ publicDishesInfogetDishesById(IntegerdishesId){

returnmapper.getDishesById(dishesId); }

/** *修改菜品信息的方法 * *@paramInfo *要修改的菜品信息，其中dishesId为修改依据，其余信息为修改的目标值 **/

publicvoidmodifyDishes(DishesInfoinfo){ mapper.modifyDishes(info); } /** *获取头4条推荐菜品的信息 * *@return头4条推荐菜品列表 **/ publicList<DishesInfo>getTop4RecommendDishes(){

returnmapper.getTop4RecommendDishes();

}}(4)在“com.chinasofti.ordersys.mapper”包中，新建DishesInfoMapper类，用于实现菜品模块映射类。Ø代码如下：packagecom.chinasofti.ordersys.mapper;

importcom.chinasofti.ordersys.model.DishesInfo;importorg.apache.ibatis.annotations.*;

importjava.util.List;

@MapperpublicinterfaceDishesInfoMapper{

@Select("select*fromdishesinfoorderbyrecommenddesc,dishesIdlimit#{first},#{max}") publicList<DishesInfo>getDishesInfoByPage(@Param("first")intfirst,@Param("max")intmax);

@Select("selectcount(*)fromdishesinfo") publicLonggetMaxPage();

@Delete("deletefromdishesinfowheredishesId=#{dishesId}") publicvoiddeleteDishesById(@Param("dishesId")IntegerdishesId); @Insert("insertintodishesinfo(dishesName,dishesDiscript,dishesTxt,dishesImg,recommend,dishesPrice)values(#{info.dishesName},#{info.dishesDiscript},#{info.dishesTxt},#{info.dishesImg},#{info.recommend},#{info.dishesPrice})") publicvoidaddDishes(@Param("info")DishesInfoinfo);

@Select("select*fromdishesinfowheredishesId=#{dishesId}") publicDishesInfogetDishesById(@Param("dishesId")IntegerdishesId);

@Update("updatedishesinfosetdishesName=#{info.dishesName},dishesDiscript=#{info.dishesDiscript},dishesTxt=#{info.dishesTxt},dishesImg=#{info.dishesImg},recommend=#{info.recommend},dishesPrice=#{info.dishesPrice}wheredishesId=#{info.dishesId}") publicvoidmodifyDishes(@Param("info")DishesInfoinfo);

@Select("select*fromdishesinfowhererecommend=1orderbydishesId") pu