private void dorestart() {
// TODO Auto-generated method stub
File thisfile = new File(fileName);
System.out.println(thisfile.getAbsolutePath());
// thisfile.renameTo(new File("old" + fileName));
copy(filePath + "/" + fileName, fileName);
DialogUtil.openInfo(shellww, "更新成功,立马重启");
shellww.getDisplay().dispose();
MainApp.main(new String[] {});
}
private boolean canUpdate() {
// TODO Auto-generated method stub
DialogUtil.openInfo(shellww, HttpUtils.getHtml(chekupdate) + "--" + version);
return (HttpUtils.getHtml(chekupdate) > Double.valueOf(version));
}
protected void down() {
// TODO Auto-generated method stub
cacel.setEnabled(false);
if (!canUpdate()) {
DialogUtil.openInfo(shellww, "没有发下新版本!");
return;
}
HttpURLConnection httpURLConnection = null;
URL url = null;
BufferedInputStream bis = null;
byte[] buf = new byte[10240];
int size = 0;
File filea = new File(filePath);
if (!filea.exists()) {
filea.mkdir();
}
String remoteUrl = downurl;
// 检查本地文件
RandomAccessFile rndFile = null;
File file = new File(filePath + "//" + fileName);
long remoteFileSize = getRemoteFileSize(remoteUrl);
long nPos = 0;
// System.out.println("remote size" + remoteFileSize + "--" + (int)
// remoteFileSize);
long every = remoteFileSize / 100;
// System.out.println("every size" + every);
if (file.exists()) {
long localFileSzie = file.length();
if (localFileSzie < remoteFileSize) {
System.out.println("文件续传...");
nPos = localFileSzie;
} else {
System.out.println("文件存在，重新下载...");
file.delete();
try {
file.createNewFile();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
} else {
// 建立文件
try {
file.createNewFile();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
// 下载文件
try {
url = new URL(remoteUrl);
httpURLConnection = (HttpURLConnection) url.openConnection();
// 设置User-Agent
httpURLConnection.setRequestProperty("User-Agent", "Net");
// 设置续传开始
httpURLConnection.setRequestProperty("Range", "bytes=" + nPos + "-");
// 获取输入流
bis = new BufferedInputStream(httpURLConnection.getInputStream());
rndFile = new RandomAccessFile(filePath + "\\" + fileName, "rw");
rndFile.seek(nPos);
long upsize = 0L; // 递增计数
int num = 0;
while ((size = bis.read(buf)) != -1) {
// if (i > 500) break;
rndFile.write(buf, 0, size);
upsize += size;
num = (int) (upsize / every);
System.out.println(num + "///////////");
updatepro.setSelection(num);
}
updatepro.setSelection(100);
httpURLConnection.disconnect();
MessageDialog.openInformation(shellww, "下载成功！", "重新启动!");
} catch (Exception e) {
// TODO: handle exception
MessageDialog.openInformation(shellww, "exception", e.getMessage());
MessageDialog.openError(shellww, "网络异常", "网络连接失败,请检查网络环境!");
return;
}
dorestart();
}