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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