jsp 在线预览word、excel、ppt、pdf文件 示例源码

package com.cectsims.util;import java.io.BufferedInputStream;import java.io.File;import java.io.IOException;import java.io.InputStream;import com.artofsolving.jodconverter.DocumentConverter;import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection;import com.artofsolving.jodconverter.openoffice.connection.SocketOpenOfficeConnection;import com.artofsolving.jodconverter.openoffice.converter.OpenOfficeDocumentConverter;/** * doc docx格式转换 */public class DocConverter {private static final int environment = 1;// 环境 1：Windows 2：Linuxprivate String fileString;// (只涉及PDF2swf路径问题)private String outputPath = "";// 输入路径 ，如果不设置就输出在默认 的位置private String fileName;private File pdfFile;private File swfFile;private File docFile;public DocConverter(String fileString) {ini(fileString);System.out.println("文件路径" fileString);}/** * * 重新设置file * * @param fileString * 32. */public void setFile(String fileString) {ini(fileString);}/** * * 初始化 * * @param fileString * */private void ini(String fileString) {this.fileString = fileString;fileName = fileString.substring(0, fileString.lastIndexOf("."));docFile = new File(fileString);pdfFile = new File(fileName ".pdf");swfFile = new File(fileName ".swf");}/** * 转为PDF * * @param file * */private void doc2pdf() throws Exception {if (docFile.exists()) {if (!pdfFile.exists()) {OpenOfficeConnection connection = new SocketOpenOfficeConnection(8100);try {connection.connect();DocumentConverter converter = new OpenOfficeDocumentConverter(connection);converter.convert(docFile, pdfFile);// close the connectionconnection.disconnect();System.out.println("****pdf转换成功，PDF输出： " pdfFile.getPath() "****");} catch (java.net.ConnectException e) {e.printStackTrace();System.out.println("****swf转换器异常，openoffice 服务未启动！****");throw e;} catch (com.artofsolving.jodconverter.openoffice.connection.OpenOfficeException e) {e.printStackTrace();System.out.println("****swf转换器异常，读取转换文件 失败****");throw e;} catch (Exception e) {e.printStackTrace();throw e;}} else {System.out.println("****已经转换为pdf，不需要再进行转化 ****");}} else {System.out.println("****swf转换器异常，需要转换的文档不存在， 无法转换****");}}/** * 转换成 swf */@SuppressWarnings("unused")private void pdf2swf() throws Exception {Runtime r = Runtime.getRuntime();if (!swfFile.exists()) {if (pdfFile.exists()) {if (environment == 1) {// windows环境处理try {Process p = r.exec("D:/Program/swfttools/pdf2swf.exe " pdfFile.getPath() " -o " swfFile.getPath() " -T 9"); System.out.print(loadStream(p.getInputStream())); System.err.print(loadStream(p.getErrorStream())); System.out.print(loadStream(p.getInputStream())); System.err.println("****swf转换成功，文件输出： " swfFile.getPath() "****");if (pdfFile.exists()){pdfFile.delete();}} catch (IOException e) {e.printStackTrace();throw e;}} else if (environment == 2) {// linux环境处理try {Process p = r.exec("pdf2swf" pdfFile.getPath() " -o " swfFile.getPath() " -T 9"); System.out.print(loadStream(p.getInputStream())); System.err.print(loadStream(p.getErrorStream())); System.err.println("****swf转换成功，文件输出： " swfFile.getPath() "****");if (pdfFile.exists()) {pdfFile.delete();}} catch (Exception e) {e.printStackTrace();throw e;}}} else {System.out.println("****pdf不存在,无法转换****");}} else {System.out.println("****swf已经存在不需要转换****");}}static String loadStream(InputStream in) throws IOException {int ptr = 0;in = new BufferedInputStream(in);StringBuffer buffer = new StringBuffer();while ((ptr = in.read()) != -1) {buffer.append((char) ptr);}return buffer.toString();}/** * * 转换主方法 */@SuppressWarnings("unused")public boolean conver() {if (swfFile.exists()) {System.out.println("****swf转换器开始工作，该文件已经转换为 swf****");return true;}if (environment == 1) {System.out.println("****swf转换器开始工作，当前设置运行环境 windows****");} else {System.out.println("****swf转换器开始工作，当前设置运行环境 linux****");}try {doc2pdf();pdf2swf();} catch (Exception e) { e.printStackTrace(); return false;}System.out.println("文件存在吗？" swfFile);if (swfFile.exists()) {System.out.println("存在");return true;} else {System.out.println("不存在");return false;}}/** *返回文件路径 * @param */public String getswfPath(){if (this.swfFile.exists()){String tempString = swfFile.getPath();tempString = tempString.replaceAll("\\\\", "/");System.out.println("最后文件路径为" tempString);return tempString;} else {return "文件不存在";}}/** * 设置输出路径 * * @param outputPath */public void setOutputPath(String outputPath){this.outputPath = outputPath;if (!outputPath.equals("")) {String realName = fileName.substring(fileName.lastIndexOf("/"),fileName.lastIndexOf("."));if (outputPath.charAt(outputPath.length()) == '/') {swfFile = new File(outputPath realName ".swf");} else {swfFile = new File(outputPath realName ".swf");}}}}