使用方法：
1.需要两个jar包：
iText-5.0.6.jar //必须使用该版本，否则缺少相关的方法
TextAsian.jar
//是为了文档中正常显示中文所必须引用的包
TextAsian.jar使用时并不是单纯的引入就可以了，还需要进一步处理该jar包，否则无法显示
（无奈当时没有保存那个解决方法的链接，所以以后要用正确的包的话，就去毕设项目下找该包）
2以下是一个完整的例子。
一、要生成pdf的jsp页面
<%@ page language="java" import="java.util.*,utils.*,entity.*,dao.*" pageEncoding="utf-8"%>
<%@ include file="top.jsp" %>
<% /*------------------------------操作记录-----------------------------------*/
DoOperation dp=new DoOperation();
Operation op=new Operation();
User user=(User) session.getAttribute("UserBean");
String IP=(String) session.getAttribute("IP");
op=dp.getOperation(IP, user.getId()+"", "舆情报告", "成功");
OperationCl oc=new OperationCl();
oc.addOperation(op);
%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta http-equiv="X-UA-Compatible" content="chrome=1">
<meta charset="gbk">
<title>舆情报告</title>
<meta name="viewport"
content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<meta name="author" content="puyuetian qq632827168">
<meta name="renderer" content="webkit">
<meta http-equiv="Cache-Control" content="no-siteapp" />
<link rel="stylesheet" href="./css/invatation/upload.css" />
<link rel="stylesheet" href="./css/invatation/default.css" />
<script charset="utf-8" src="./js/invatation/kindeditor-min.js"></script>
<script charset="utf-8" src="./js/invatation/zh_CN.js"></script>
<script charset="utf-8" src="./js/invatation/puyuetian.js"></script>
<script language="javascript" type="text/javascript"
src="./js/My97DatePicker/WdatePicker.js"></script>
<link rel="stylesheet" href="./css/invatation/amazeui.min.css">
<link rel="stylesheet" href="./css/invatation/app.css">
<!--[if (gte IE 9)|!(IE)]><!-->
<script src="./js/invatation/jquery.min.js"></script>
<!--<![endif]-->
<script src="./js/invatation/amazeui.min.js"></script>
</head>
<body>
<style>
.hook-mail-forgotpassword-a {
font-size: 12px;
display: block;
text-align: right;
}
</style>
<br>
<div class="am-container">
<div class="am-container">
<div style="background-color: white;padding: 1.6rem;">
<style>
.am-breadcrumb li {
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
max-width: 360px;
}
</style>
<link rel="stylesheet" href="./css/invatation/edit.css">
<script>
var editor;
KindEditor.ready(function(K) {
editor = K.create(‘textarea[name=content]‘, {
width : ‘100%‘,
height : ‘360px‘,
resizeType : 1,
allowPreviewEmoticons : false,
allowImageUpload : false,
items : [ ‘source‘, ‘|‘, ‘fontname‘, ‘fontsize‘,
‘|‘, ‘forecolor‘, ‘hilitecolor‘, ‘bold‘,
‘italic‘, ‘underline‘, ‘removeformat‘, ‘|‘,
‘justifyleft‘, ‘justifycenter‘,
‘justifyright‘, ‘insertorderedlist‘,
‘insertunorderedlist‘, ‘|‘, ‘emoticons‘,
‘table‘, ‘code‘, ‘image‘, ‘link‘,
‘quickformat‘ ]
});
});
</script>
<a name="post"></a>
<div class="am-container" style="background:white">
<form name="form_post" class="am-form am-form-horizontal"
method="post" action="reportServlet">
<div class="text" style=" text-align:center;font-size:26px;">舆情报告</div>
<br>
<div class="am-form-group ">
<input type="text" style="width:560px;" name="title"
placeholder="舆情事件" value="" onfocus="readsortdiv(‘visible‘)"
autocomplete="off">
<div id="readsortdiv" class="readsortdiv"></div>
</div>
<div class="am-form-group ">
<input name="time" class="Wdate" type="text" placeholder="发生时间"
onClick="WdatePicker()" style="width:220px;">
</div>
<div class="am-form-group">
<select name="area" style="margin: 10px 0px;width:360px;">
<option value="0">发生地区</option>
<option value=‘和平区‘>和平区</option>
<option value=‘南开区‘>南开区</option>
<option value=‘河东区‘>河东区</option>
<option value=‘河西区‘>河西区</option>
<option value=‘河北区‘>河北区</option>
<option value=‘红桥区‘>红桥区</option>
<option value=‘西青区‘>西青区</option>
<option value=‘塘沽区‘>塘沽区</option>
<option value=‘汉沽区‘>汉沽区</option>
<option value=‘东丽区‘>东丽区</option>
<option value=‘大港区‘>大港区</option>
<option value=‘津南区‘>津南区</option>
<option value=‘北辰区‘>北辰区</option>
<option value=‘武清区‘>武清区</option>
<option value=‘宝坻区‘>宝坻区</option>
<option value=‘宁河县‘>宁河县</option>
<option value=‘静海县‘>静海县</option>
<option value=‘蓟县‘>蓟县</option>
</select>
</div>
<div class="am-form-group">
<textarea name="summary" placeholder="舆情概述"></textarea>
</div>
<div class="am-form-group">
<textarea name="data" placeholder="相关数据"></textarea>
</div>
<div class="am-form-group">
<textarea name="result" placeholder="结论"></textarea>
</div>
<div class="am-form-group">
<textarea name="advise" placeholder="部门意见"></textarea>
</div>
<div class="am-form-group">
<input type="submit" class="am-btn am-btn-primary" value="生成PDF" />
</div>
</form>
</div>
</div>
</div>
<link rel="stylesheet" href="./css/invatation/hdrive.css">
<script defer="defer">
var $USER = Array();
$USER[‘ID‘] = "2";
$USER[‘USERNAME‘] = "游客";
$USER[‘NICKNAME‘] = "匿名游客";
$USER[‘QUANXIAN‘] = "bbcode,download,lookread,lookuser,reply,search";
$USER[‘TIANDOU‘] = "0";
$USER[‘JIFEN‘] = "0";
$USER[‘QIANDAODAYS‘] = "79";
$USER[‘QIANDAOTIME‘] = "1452392237";
$USER[‘SEX‘] = "机器人";
$USER[‘BIRTHDAY‘] = "0";
$USER[‘MAIL‘] = "[email protected]";
$USER[‘QQ‘] = "632827168";
$USER[‘PHONE‘] = "保密";
$USER[‘SIGN‘] = "系统用户组 - 游客";
$USER[‘FRIENDS‘] = "_1_";
$USER[‘READLEVEL‘] = "0";
var $GET = Array();
$GET[‘C‘] = "edit";
$GET[‘TYPE‘] = "read";
$GET[‘SORTID‘] = "0";
var $SET = Array();
$SET[‘QIANDAOJIFEN‘] = "10";
$SET[‘QIANDAOTIANDOU‘] = "10";
var $QIANDAOED = ‘FALSE‘;
function windowonscroll() { //页面滚动事件
//navmove();
}
function loadinghere() { //页面加载至此事件
$newmessagenum = ‘492‘;
if ($newmessagenum != ‘‘) {
$newmessagenum = parseInt($newmessagenum);
$title = "您有新条新消息。";
document.getElementById("mf_m_new").style.visibility = ‘visible‘;
document.getElementById("mf_m").title = $title;
}
if ($USER[‘ID‘] != 2) {
showxunzhang();
showuserlevelprogressbar();
}
qiandao(0);
}
function loadcomplete() {
//页面加载完成事件,异步数据驱动
var s = document.createElement(‘script‘);
s.src = ‘http:\/\/tongji.hadsky.com\/tongji.php?domain=‘
+ document.domain + ‘&allurl=‘
+ encodeURIComponent(document.location);
//alert(encodeURI(document.location));
document.getElementsByTagName(‘head‘)[0].appendChild(s);
}
try {
loadinghere();
} catch (e) {
//TODO handle the exception
}
window.onscroll = windowonscroll;
//创建全局驱动框架
var cifrm = document.createElement(‘iframe‘);
cifrm.name = ‘ifrm‘;
cifrm.id = ‘ifrm‘;
cifrm.style.display = ‘none‘;
document.getElementsByTagName(‘body‘)[0].appendChild(cifrm);
window.onload = loadcomplete;
</script>
<script src="./js/invatation/upload.js"></script>
<link rel="stylesheet" href="./css/invatation/footer.css" />
<div class="am-container">
<div style="background-color: white;padding: 1.6rem;">
<p class="am-text-center am-article-meta"
style="padding-top:4.8rem;padding-bottom:1.6rem;">
梦虽然遥不可及，但并不是不可能实现；只要坚持，就会离梦越来越近！</p>
</div>
</div>
</body>
</html>
二、处理请求的servlet
package servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import dao.OperationCl;
import dao.ReportCl;
import entity.Operation;
import entity.Report;
import entity.User;
import utils.DoOperation;
import utils.DoPDF;
import java.text.SimpleDateFormat;
import java.util.Date;
public class reportServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
request.setCharacterEncoding("utf-8");
/*------------------操作记录-------------------*/
DoOperation dp=new DoOperation();
Operation op=new Operation();
HttpSession session = request.getSession();
User user=(User) session.getAttribute("UserBean");
String IP=(String) session.getAttribute("IP");
op=dp.getOperation(IP, user.getId()+"", "舆情报告", "成功");
OperationCl oc=new OperationCl();
oc.addOperation(op);
//前台接收数据
String title=request.getParameter("title");
String time=request.getParameter("time");
String area=request.getParameter("area");
String summary=request.getParameter("summary");
String data=request.getParameter("data");
String result=request.getParameter("result");
String advise=request.getParameter("advise");
//得到用户id
int userID=user.getId();
//文档路径和命名
SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");//设置日期格式
String str=df.format(new Date());// new Date()为获取当前系统时间
String filePath="F://MyEclipseWorkspace2014//MyData//WebRoot//WEB-INF//report//"+str+"report.pdf";
String fileName=str+"report.pdf";//在文件名前加上时间，文件名不再重复
//生成pdf文档
DoPDF doPdf=new DoPDF();//生成pdf的类
doPdf.getPDF(filePath, title, time, area, summary, data, result, advise);
}
}
三、真正生成pdf文档的类DoPDF
package utils;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
public class DoPDF {
public void getPDF(String filePath,String title,String time,String area,
String summary,String data,String result,String advise) throws IOException{
Document document = new Document(PageSize.A4);
try {
try {
PdfWriter.getInstance(document,
new FileOutputStream(filePath));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
document.open();
BaseFont bfCN;
Font fontCN ;
bfCN = BaseFont.createFont("STSongStd-Light","UniGB-UCS2-H", false);
fontCN = new Font(bfCN, 12, Font.NORMAL, BaseColor.BLACK);
PdfPTable table = new PdfPTable(4);
table.setTotalWidth(new float[]{66,84,66,84});
// 设置字体大小
PdfPCell cell = new PdfPCell(new Phrase("舆情报告",fontCN));
cell.setColspan(4);
cell.setBorderWidth(0);//设置表格的边框宽度为0
cell.setMinimumHeight(30);
cell.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(cell);
PdfPCell cell1 = new PdfPCell(new Phrase("舆情事件",fontCN));
cell1.setColspan(1);
cell1.setBorderWidth(1);//设置表格的边框宽度为0
cell1.setMinimumHeight(30);
table.addCell(cell1);
PdfPCell cell2 = new PdfPCell(new Phrase(title,fontCN));
cell2.setColspan(3);
cell2.setBorderWidth(1);//设置表格的边框宽度为0
cell2.setMinimumHeight(30);
table.addCell(cell2);
PdfPCell cell3 = new PdfPCell(new Phrase("发生时间",fontCN));
cell3.setColspan(1);
cell3.setBorderWidth(1);//设置表格的边框宽度为0
cell3.setMinimumHeight(30);
table.addCell(cell3);
PdfPCell cell4 = new PdfPCell(new Phrase(time,fontCN));
cell4.setColspan(1);
cell4.setBorderWidth(1);//设置表格的边框宽度为0
cell4.setMinimumHeight(30);
table.addCell(cell4);
PdfPCell cell5 = new PdfPCell(new Phrase("发生地区",fontCN));
cell5.setColspan(1);
cell5.setBorderWidth(1);//设置表格的边框宽度为0
cell5.setMinimumHeight(30);
table.addCell(cell5);
PdfPCell cell6 = new PdfPCell(new Phrase(area,fontCN));
cell6.setColspan(1);
cell6.setBorderWidth(1);//设置表格的边框宽度为0
cell6.setMinimumHeight(30);
table.addCell(cell6);
PdfPCell cell7 = new PdfPCell(new Phrase("舆情概述",fontCN));
cell7.setColspan(4);
cell7.setBorderWidth(1);//设置表格的边框宽度为0
cell7.setMinimumHeight(30);
table.addCell(cell7);
PdfPCell cell8 = new PdfPCell(new Phrase(summary,fontCN));
cell8.setColspan(4);
cell8.setBorderWidth(1);//设置表格的边框宽度为0
cell8.setMinimumHeight(90);
table.addCell(cell8);
PdfPCell cell9 = new PdfPCell(new Phrase("相关数据",fontCN));
cell9.setColspan(4);
cell9.setBorderWidth(1);//设置表格的边框宽度为0
cell9.setMinimumHeight(30);
table.addCell(cell9);
PdfPCell cell10 = new PdfPCell(new Phrase(data,fontCN));
cell10.setColspan(4);
cell10.setBorderWidth(1);//设置表格的边框宽度为0
cell10.setMinimumHeight(90);
table.addCell(cell10);
PdfPCell cellA = new PdfPCell(new Phrase("结论",fontCN));
cellA.setColspan(4);
cellA.setBorderWidth(1);//设置表格的边框宽度为0
cellA.setMinimumHeight(30);
table.addCell(cellA);
PdfPCell cellB = new PdfPCell(new Phrase("cell B",fontCN));
cellB.setColspan(4);
cellB.setBorderWidth(1);//设置表格的边框宽度为0
cellB.setMinimumHeight(90);
table.addCell(cellB);
PdfPCell cellC = new PdfPCell(new Phrase(advise,fontCN));
cellC.setColspan(4);
cellC.setBorderWidth(1);//设置表格的边框宽度为0
cellC.setMinimumHeight(30);
table.addCell(cellC);
PdfPCell cellD = new PdfPCell(new Phrase("cell D",fontCN));
cellD.setColspan(4);
cellD.setBorderWidth(1);//设置表格的边框宽度为0
cellD.setMinimumHeight(90);
table.addCell(cellD);
PdfPCell cellE = new PdfPCell(new Phrase("领导意见",fontCN));
cellE.setColspan(2);
cellE.setBorderWidth(1);//设置表格的边框宽度为0
cellE.setMinimumHeight(30);
table.addCell(cellE);
PdfPCell cellF = new PdfPCell(new Phrase("审批意见",fontCN));
cellF.setColspan(2);
cellF.setBorderWidth(1);//设置表格的边框宽度为0
cellF.setMinimumHeight(30);
table.addCell(cellF);
PdfPCell cellM = new PdfPCell(new Phrase("",fontCN));
cellM.setColspan(2);
cellM.setBorderWidth(1);//设置表格的边框宽度为0
cellM.setMinimumHeight(70);
table.addCell(cellM);
PdfPCell cellN = new PdfPCell(new Phrase("",fontCN));
cellN.setColspan(2);
cellN.setBorderWidth(1);//设置表格的边框宽度为0
cellN.setMinimumHeight(70);
table.addCell(cellN);
document.add(table);
}catch (DocumentException e) {
e.printStackTrace();
} finally {
document.close();
}
}
}
四、文档下载的servlet
package servlet;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.URLEncoder;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class DownloadServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
/*-----------------接收文件名和文件路径-----------------------------------*/
String filename = request.getParameter("filename");
String path = request.getParameter("filepath");
//System.out.println(filename);
response.setContentType(getServletContext().getMimeType(filename));
response.setHeader("Content-Disposition","attachment;filename="+filename);
//String fullFileName=getServletContext().getRealPath("/download/"+filename);
InputStream in=new FileInputStream(path);
OutputStream out = response.getOutputStream();
//创建缓冲区
byte buffer[] = new byte[1024];
int len = 0;
//循环将输入流中的内容读取到缓冲区当中
while((len=in.read(buffer))>0){
//输出缓冲区的内容到浏览器，实现文件下载
out.write(buffer, 0, len);
}
//关闭文件输入流
in.close();
//关闭输出流
out.close(); }
}
时间： 2024-11-06 03:56:32