java 調用指令行 備份mysql資料庫

// 方式1
		String command = "D:\\mysql\\bin\\mysqldump -h127.0.0.1 -uroot -p -ntd -R -dbname";
		Runtime runtime = Runtime.getRuntime();
		Process process = runtime.exec(command);
		InputStreamReader reader = new InputStreamReader(process.getInputStream());
		BufferedReader buffReader = new BufferedReader(reader);
		String inStr;
		String outStr;
		StringBuffer buffer = new StringBuffer();
		while ((inStr = buffReader.readLine()) != null) {
			buffer.append(inStr + "\r\n");
		}
		outStr = buffer.toString();
		OutputStream os = new FileOutputStream("D:\\sql.sql");
		OutputStreamWriter writer = new OutputStreamWriter(os);
		writer.write(outStr);
		writer.flush();
		reader.close();
		buffReader.close();
		os.close();
		writer.close();

		// 方式2
		String command = "cmd /c mysqldump -h127.0.0.1 -uroot -p -ntd -R -dbname";
		Runtime runtime = Runtime.getRuntime();
		Process process = runtime.exec(command, null,new File("D:\\mysql\\bin"));
		InputStreamReader reader = new InputStreamReader(process.getInputStream());
		BufferedReader buffReader = new BufferedReader(reader);
		String inStr;
		String outStr;
		StringBuffer buffer = new StringBuffer();
		while ((inStr = buffReader.readLine()) != null) {
			buffer.append(inStr + "\r\n");
		}
		outStr = buffer.toString();
		OutputStream os = new FileOutputStream("D:\\sql.sql");
		OutputStreamWriter writer = new OutputStreamWriter(os);
		writer.write(outStr);
		writer.flush();
		reader.close();
		buffReader.close();
		os.close();
		writer.close();