| 标题 | JSP上面实现目录压缩 |
| 范文 | zip方法 zipPath参数为保存zip的文件路径 srcPath参数为需要压缩的目录 在linux window上面测试无问题!主要是编码问题比较麻烦~要是有其他异常 请留言 或者 有什么更好的方法 欢迎给更多的意见 //zip zhe folder void zip(String zipPath, String srcPath,javax.servlet.jsp.JspWriter out) throws Exception { FileOutputStream output = null; ZipOutputStream zipOutput = null; try{ output = new FileOutputStream(zipPath); zipOutput = new ZipOutputStream(output); zipEntry(zipOutput,srcPath,srcPath,zipPath); }catch(Exception e){ out.print("file zip error"); }finally{ if(zipOutput!=null)zipOutput.close(); } out.print("zip ok"+zipPath); } //add the zip entry void zipEntry(ZipOutputStream zipOs, String initPath,String filePath,String zipPath) throws Exception { String entryName = filePath; File f = new File(filePath); if (f.isDirectory()){// ?? String[] files = f.list(); for(int i = 0; i < files.length; i++) zipEntry(zipOs, initPath, filePath + File.separator + files[i],zipPath); return; } String chPh = initPath.substring(initPath.lastIndexOf("/") + 1);// ????? int idx=initPath.lastIndexOf(chPh); if (idx != -1) { entryName = filePath.substring(idx); } ZipEntry entry; entry = new ZipEntry(entryName); File ff = new File(filePath); if(ff.getAbsolutePath().equals(zipPath))return; entry.setSize(ff.length()); entry.setTime(ff.lastModified()); //the CRC efficacy entry.setCrc(0); CRC32 crc = new CRC32(); crc.reset(); zipOs.putNextEntry(entry); int len = 0; byte[] buffer = new byte[2048]; int bufferLen = 2048; FileInputStream input =null; try{ input = new FileInputStream(filePath); while ((len = input.read(buffer, 0, bufferLen)) != -1) { zipOs.write(buffer, 0, len); crc.update(buffer, 0, len); } }catch(Exception e){ }finally{ if(input!=null)input.close(); } entry.setCrc(crc.getValue()); } |
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