文件与javamail邮件开发-课件代码

一、生命周期器属性器 Session相关案例：显示用户二、资源文件：基础名_语言_国家 【通用基础名 获取文JSP页面Jstl提供的“与格式化库文件上传与

--→选择头像/商品(数据库：路径/保存到服务器中指定 文件上传，要点<inputtype=”file”<formname="frm_test"action="${pageContext.req method="post"enctype="multipart/form-data">用户名：<inputtype="text"name="userName">< <inputtype="file"name="file_img"><inputtype="submit"value="publicclassUploadServletextendsHttpServletthrowsServletException,IOExceptionrequest.getParameter("");//GET/POSTrequest.getQueryString();//获取GET提交的数据request.getInputStream();//获取post提交的数据 //1InputStreamin=//2InputStreamReaderinStream=newInputStreamReader(in,"UTF-//3BufferedReaderreader=new输出数Stringstr=while((str=reader.readLine())!=null){}//关闭} Content-Dispositionform-data; Content-Dispositionform-data;name="file_img";filename="reamde.txt"Content-Type:text/plain Apache提供的文件上传组件:FileUploadFileUpload组件项目中引入jar 【文件上传组件jar包 publicclassUploadServletextendsHttpServlet// throwsServletException,IOException/*********try1.FileItemFactoryfactory=new//2.创建文件上传工具ServletFileUploadupload=new//一、设置单个文件允许的最大的大小：30M二、设置文件上传表单允许的总大小80M三、相当于：request.setCharacterEncoding("UTF-8");3.判断表if4.把请求数据转换为一个个FileItem对象，再用集合封List<FileItem>list=uplo数for(FileItemitem:if普通文本数StringfieldName 表单元名Stringcontent //item.getString("UTF-8");System.out.println(fieldName+""+}//上传文件(文件流)>上传到 else普通文本数StringfieldName 表单元名Stringname Stringcontent Stringtype 文件类InputStreaminitem.getInputStream上传文件a.Stringid==id+"#"+Stringpath=创建目标文Filefile=new工具类，文件上 }}}else}}catch(Exceptione){}}文件上传与，完整案例<ahref="${pageContext.reqontextPath}/upload.jsp">文件上传</a>href="${pageContext.reqontextPath}/fileServlet?method=downList">文件下<formaction="${pageContext.reqontextPath}/fileServlet?method=upload"method="post"enctype="multipart/form-data"><%--<inputtype="hidden"name="method"value="upload">--用户名：<inputtype="text"name="userName">< <inputtype="file"name="file_img"><inputtype="submitvalue="提交<tableborder="1"<c:forEachvar="en"items="${requestScope.fileNames}"<td>${vs.count<td>${en.value<%--href="${pageContext.reqontextPath构建一个地址<c:urlvar="url"<c:paramname="method"<c:paramname="fileName"使用上面地址<ahref="${url}">@authorpublicclassFileServletextendsHttpServletthrowsServletException,IOExceptionStringmethod=if("upload".equals(method))上}elseif("downList".equals(method))//进入列}elseif("down".equals(method))//}}*1.上privatevoidupload(HttpServletRequestrequest,HttpServletResponsethrowsServletException,IOExceptiontry1.FileItemFactoryfactory=new//2.文件上传工具ServletFileUploadupload=new设置大小限制参 //单个文件大小限制 //总文件大小限制 //对中文文件编码处理判if(upload.isMultipartContent(request))3.把请求数据转换为list集List<FileItem>list= 遍for(FileItemitem:if获取名Stringname=Stringvalue=item.getString();}else/********a.Stringname=处理上传文件名重名问题a1Stringid=a2name=id+"#"+b.StringbasePath=c.Filefile=newd.上item.delete();//}}}}catch(Exceptione){}}*2.进入列privatevoiddownList(HttpServletRequestrequest,throwsServletException,IOException//实现思路：先获取 //1.初始化map集合Map<包含唯一标记的文件名,简短文件名>;Map<String,StringfileNamesnewHashMap<String,String>();//2.获取上 StringbathPath=Filefile=new Stringlist[]=if(list!=null&&list.length>for(inti=0;i<list.length;全StringfileName=短StringshortName=封fileNames.put(fileName,}}3.保存到requestrequest.setAttribute("fileNames",4.转}*3.处理throwsServletException,IOException//获取用户的文件名称(url地址后追加数据StringfileName=fileName=newString(fileName.getBytes("ISO8859-1"),"UTF-//先获取上 StringbasePath=InputStreamin=newFileInputStream(new//fileName=URLEncoder.encode(fileName,"UTF-//设置的响应response.setHeader("content-disposition","atta ent;fileName="+OutputStreamout=byte[]b=newbyte[1024];intlen=-1;while((len=in.read(b))!=-1){out.write(b,0,len);}关}publicvoiddoPost(HttpServletRequestrequest,HttpServletResponsethrowsServletException,IOExceptionthis.doGet(request,}} +配置-→，填写生日；后期系统会自动发送生日祝-→发货，发货提醒！邮件提醒！foxmail邮件开发准备准备工作,-→给发邮件。1：新建：工具，服务器设置，单框中输入2： 配置邮件发送服务器(smtp)： 邮件接收服务器(pop3)： 邮件开发之普通邮件JavaMail开发，先引入jar 【如果使用jdk1.6或以上版本，可以不用这个jar 1.@authorpublicclassApp_SendMailpublicvoid d()throwsException//0邮件参Propertiesprop=newProperties();prop.put("tocol","smtp"); //指定协议prop.put("mail.smtp.host","localhost"); //主机prop.put("mail.smtp.port",25); //端口prop.put("mail.smtp.auth","true"); //用户认证prop.put("mail.debug","true"); //调试模式//1Sessionsession=//2(整封邮件对象MimeMessagemessage=new//3设置邮件体参数//3.1标 //3.2 tDate(new//3.3发件 der(new //3.4接收 message.setText("你好，已经发送成功！正文");// 保存邮件(可选//4发Transporttrans=session.getTransport();trans.connect("zhangsan","888");发送邮trans.sendMessage(message,message.getAllRecipients());}}邮件开发之带带资源的邮@authorpublicclassApp_2SendWithImg//初始化参privatestaticPropertiesprivatestaticInternetAddresssendMan=null;static{prop=newprop.put("tocol","smtp");指定协prop.put("mail.smtp.host"," 机prop.put("mail.smtp.port", 口prop.put("mail.smtp.auth", 用户认prop.put("mail.debug 试模trysendMan= }catch(AddressExceptione)thrownew}}publicvoid d()throwsException1创建邮件Sessionsession=2创建邮件MimeMessagemessage=new//3.设置参数：标题、发件人、收件人、发送时间、内message.setSubject("带邮件 message.setRecipient(RecipientType.TO,new tDate(newDate());/***************设置邮件内容:多功能用户邮4.1构建一个多功能邮件MimeMultipartrelated=//4.2构建多功能邮件块内容=左侧文本+右侧资MimeBodyPartcontent=newMimeBodyPart();MimeBodyPartresource=newMimeBodyPart();//设置具体内容:a.资源()StringfilePath=;DataSourceds=newFileDataSource(newDataHandlerhandler=newDataHandler(ds); //设置资源名给外键设置具体内容b.文content.setContent("<imgsrc='cid:8.jpg'/>好哈哈！","text/html;charset=UTF-8");/*******4.3把构建的复杂邮件快，添加到邮件中********/5发Transporttrans=session.getTransport();trans.connect("zhangsan","888");}}邮件开发之带+附3.带资源以及附件的邮@authorpublicclassApp_3ImgAndAtta//初始化参privatestaticPropertiesprivatestaticInternetAddresssendMan=null;static{prop=newprop.put("tocol","smtp");指定协prop.put("mail.smtp.host"," 机prop.put("mail.smtp.port", 口prop.put("mail.smtp.auth", 用户认prop.put("mail.debug 试模trysendMan= }catch(AddressExceptione)thrownew}}publicvoid d()throwsException1创建邮件Sessionsession=2创建邮件MimeMessagemessage=new//3.设置参数：标题、发件人、收件人、发送时间、内message.setSubject("带邮件 message.setRecipient(RecipientType.TO,new tDate(newDate());*带附件()邮件开//构建一个总的邮MimeMultipartmixed=new