wget ftp 下载文件java代码

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private boolean wget(String file) {
// wget file
// targetDir must has been created, or cleared if necessary
DirUtils.mkDir(targetDir + "/" + UrlParser.getFilePath(file));
String orig_url = file;

String localFile = targetDir + "/" + file;

file = remoteServerConf.getProtocol() + "://" + file;
String cmd = "wget -t3 -T60 -c " + file + " -O " + localFile;
if (remoteServerConf.getProtocol().equalsIgnoreCase("ftp") == true
&& remoteServerConf.getFTPMode() == 0) {
cmd += " --no-passive-ftp";
}

if (remoteServerConf.getUser() != null && !remoteServerConf.getUser().isEmpty()) {
cmd += " --user " + remoteServerConf.getUser();
cmd += " --password " + remoteServerConf.getPassword();
}

String[] cmds = { "/bin/bash", "-c", cmd };

logger.info("start to exec \t" + cmd);

BufferedReader br = null;
int result = -1;

// 5850K .......... .......... .......... .......... .......... 97% 923K
// 0s
// 350K ,,,,,,, 100% 0.00 =0s
// 0K .......... .......... .......... .......... .......... 0% 309K 19s
// 50K .......... .......... .......... .......... .......... 1% 928K
// 13s
Matcher matcher = Pattern.compile("^\\s*(\\d+)K", Pattern.CASE_INSENSITIVE)
.matcher("");
try {
Runtime t = java.lang.Runtime.getRuntime();
Process p = t.exec(cmds);
br = new BufferedReader(new InputStreamReader(p.getErrorStream()));

long prev_report_size = -(this.reportSizeInterval);
long curr_size = -(this.reportSizeInterval);

String msg = null;
while ((msg = br.readLine()) != null) {
// try to get download size
matcher.reset(msg);
if (matcher.find()) {
curr_size = Long.parseLong(matcher.group(1)) * 1024;

// System.out.println("curr_size: " + curr_size + "\t" +
// file);
if ((curr_size - prev_report_size) >= this.reportSizeInterval) {
updateDownloadSize(curr_size);
// logger.info("Has downloaded: " + curr_size + "\t" +
// file);
prev_report_size = curr_size;
}
}

// try to get length
// Length: 1181995 (1.1M)
// Length: 6213828 (5.9M), 4856852 (4.6M) remaining
// [application/octet-stream]
// Length: 366356 (358K)
// Length: 1181995 (1.1M), 1172559 (1.1M) remaining
else if (msg.startsWith("Length")) {
String[] fields = msg.split(" +");
if (fields.length > 1) {
this.length = Long.parseLong(fields[1]);
updateTotalLength(this.length);
logger.info("Total Length: " + length + "\t" + file);
}
}
}
br.close();

result = p.waitFor();

if (result == 0) {
if (uncompress(orig_url) != true)
{
logger.error("failed to uncompress the file" + orig_url);
}
else
return true;
}

} catch (IOException e) {
logger.error("IOException in wget " + file, e);
} catch (InterruptedException e) {
logger.error("InterruptedException in wget " + file, e);
} finally {
try {
br.close();
} catch (IOException e) {
logger.error("IOException in closing buffer reader  " + file, e);
}
}

return result == 0 ? true : false;
}