JavaEE企業(yè)級項目開發(fā)（第3版）課件 微課4-7：任務4.2文件夾管理

主講人：蔣衛(wèi)祥延遲符任務4.2文件夾管理Spring入門與IoC文件夾管理設計步驟3．Service層4．控制層5．Spring配置文件2.Mapper映射文件:FolderMapper.xml1．Mapper接口：FolderMapper.java延遲符文件夾管理延遲符1．Mapper接口：FolderMapper.java@MapperpublicinterfaceFolderMapper{//保存文件夾信息publicbooleansaveFolder(Folderfolder);;

//根據文件名稱查詢文件夾publicList<Folder>selectFolderByName(StringfolderName);}文件夾管理延遲符2.Mapper映射文件:FolderMapper.xml<mappernamespace="cn.js.ccit.mapper.FolderMapper"><!--新增文件夾信息--><insertid="saveFolder"parameterType="cn.js.ccit.pojo.Folder">insertintotb_folder(folderName,folderPath,creator,folderDate,folderDelete)values(#{folderName},#{folderPath},#{creator},#{folderDate},#{folderDelete})</insert><!--根據文件名稱查詢文件夾--><selectid="selectFolderByName"parameterType="string"resultType="folder">select*fromtb_folderwherefolderName=#{folderName}</select></mapper>文件夾管理延遲符3.Service層：新增文件夾Service接口

publicinterfaceIFileInfoService{//保存文檔信息publicbooleaninsertFileInfo(FileInfofileInfo);

//文檔是否存在publicbooleanisExistFileInfo(StringfilePath,StringfileName);

//根據文檔名或創(chuàng)建者查詢文檔publicList<FileInfo>searchFileInfoByName(StringfileName,Stringcreator);}文件夾管理延遲符3.Service層：新增文件夾Service接口實現類@DatapublicclassFolderServiceimplementsIFolderService{@AutowiredprivateFolderMapperfolderMapper;

//保存文件夾信息publicbooleansaveFolder(Folderfolder){returnfolderMapper.saveFolder(folder);}

//創(chuàng)建文件夾publicbooleancreateFolder(StringfolderPath,StringfolderName){booleanresult=false;Filefile=newFile(folderPath,folderName);if(file.exists()){result=false;}else{file.mkdir();result=true;}returnresult;}

//文件夾是否存在publicbooleanisExistFolder(StringfolderName){booleanresult=false;List<Folder>list=folderMapper.selectFolderByName(folderName);if(list.size()>0){result=true;}returnresult;}}文件夾管理延遲符4.控制層ServletContextsc=this.getServletContext();//通過上下文對象獲取Spring容器對象WebApplicationContextwac=WebApplicationContextUtils.getWebApplicationContext(sc);IFolderServicefolderService=

wac.getBean("folderService",FolderService.class);//判斷文件夾是否存在booleanisExistFolder=

folderService.isExistFolder(folderName);if(isExistFolder){//文件夾已經存在result=false;}else{folderService.createFolder(folderPath,folderName);

//創(chuàng)建文件夾Folderfolder=newFolder();…..//設置文件夾信息

//將文件夾信息保存到數據表中booleaninsertResult=folderService.saveFolder(folder);if(insertResult){//保存成功result=true;}else{//保存失敗result=false;}}if(result){out.println("恭喜您，文件夾信息保存成功！");}else{out.println("文件夾信息已經存在或保存失敗！");}}文件夾管理延遲符5.Spring配置文件<!--配置數據源-->…..

<!--配置sqlSessionFactory-->……<!—配置Mapper接口--><beanid="folderMapper"class="org.mybatis.spring.mapper.MapperFactoryBean"><!--指定要映射的mapper接口的全限定名--><propertyname="mapperInterface"value="cn.js.ccit.mapper.FolderMapper"/><!--指定sqlSessionFactory--><propertyname="sqlSessionFactory"ref="sqlSessionFactory"/></bean><!—foldService依賴folderMapper--><beanid="folderService"class="cn.js.ccit.service.FolderService"><propertyname="folderMap