Ext怎么导出pdf

Question

要详细点的

Answer 1

JAVA导出PDF实例
http://quicker.iteye.com/blog/548805
[code="java"]

一、直接导出成PDF

Java代码
import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import com.itextpdf.text.Document;

import com.itextpdf.text.DocumentException;

import com.itextpdf.text.Paragraph;

import com.itextpdf.text.pdf.PdfWriter;

public class ItextProduce {

public static void main(String[] args) {  
    Document doc = null;  
    try {  
        doc = new Document();  
        PdfWriter.getInstance(doc, new FileOutputStream("C:\\itext.pdf"));  
        doc.open();  
        doc.add(new Paragraph("Hello World"));  
    } catch (FileNotFoundException e) {  
        e.printStackTrace();  
    } catch (DocumentException e) {  
        e.printStackTrace();  
    } finally {  
        doc.close();  
    }  
}  

}

二、由Servlet导出PDF

Java代码
package com.lwf.eus.servlet;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.ServletOutputStream;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import com.itextpdf.text.Document;

import com.itextpdf.text.DocumentException;

import com.itextpdf.text.Paragraph;

import com.itextpdf.text.pdf.PdfWriter;

public class ListRocarsReportServlet extends HttpServlet {

private static final long serialVersionUID = 1L;

public ListRocarsReportServlet() {  
    super();  
}  

protected void doGet(HttpServletRequest request,  
        HttpServletResponse response) throws ServletException, IOException {  
    this.doPost(request, response);  
}  

protected void doPost(HttpServletRequest request,  
        HttpServletResponse response) throws ServletException, IOException {  
    Document doc = new Document();  
    ByteArrayOutputStream ba = new ByteArrayOutputStream();  
    try {  
        PdfWriter writer = PdfWriter.getInstance(doc, ba);  
        doc.open();  
        doc.add(new Paragraph("Hello World"));  

    } catch (DocumentException e) {  
        e.printStackTrace();  
    }  
    doc.close();  

    response.setContentType("application/pdf");  
    response.setContentLength(ba.size());  
    ServletOutputStream out = response.getOutputStream();  
    ba.writeTo(out);  
    out.flush();  
}  

}

三、由JSP导出成PDF

Java代码
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

pageEncoding="ISO-8859-1"%>

<%@ page

import="java.io.ByteArrayOutputStream,

com.itextpdf.text.Document,

java.io.DataOutput,java.io.DataOutputStream,

com.itextpdf.text.Paragraph,

com.itextpdf.text.DocumentException,

com.itextpdf.text.Document.*,

com.itextpdf.text.pdf.*"%>

<%

response.setContentType("application/pdf");

Document doc = new Document();

ByteArrayOutputStream ba = new ByteArrayOutputStream();

PdfWriter writer = PdfWriter.getInstance(doc, ba);  
doc.open();  
doc.add(new Paragraph("Hello World"));  
doc.close();  

DataOutput output = new DataOutputStream(response.getOutputStream());  
byte[] bytes = ba.toByteArray();  
response.setContentLength(bytes.length);  
for (int i = 0; i < bytes.length; i++) {  
    output.writeByte(bytes[i]);  
}  

%>

[/code]