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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