java process copy

 

/**
	 * 
	 * @param sourceFile
	 *            待复制的源文件,必须用双反斜杠
	 * @param targetDir
	 *            待复制到的目录,必须用双反斜杠
	 * @return
	 * @throws Exception
	 */
	@Override
	public int copyFiles(String sourceFile, String targetDir) throws Exception {
		Runtime runtime = Runtime.getRuntime();
		int result;
		try {
			result = 0;
			StringBuilder sbStr = new StringBuilder();
			sbStr.append("xcopy /y /d  ").append(sourceFile).append("  ").append(targetDir).append("  ");
			Process process = runtime.exec(sbStr.toString());
			InputStream is = process.getInputStream();
			InputStreamReader isr = new InputStreamReader(is);
			BufferedReader br = new BufferedReader(isr);
			String line = null;
			StringBuffer sb = new StringBuffer();
			while ((line = br.readLine()) != null) {
				sb.append(line);
			}
			is.close();
			isr.close();
			br.close();
			if (null != sb && !sb.toString().equals("")) {
				String strResult = sb.toString();
				int copyIndex = strResult.indexOf("复制了");
				int startIndex = copyIndex + 3;
				int endIndex = copyIndex + 5;
				result = Integer
						.parseInt(strResult.substring(startIndex, endIndex).trim());
			}
		} catch (Exception e) {
			e.printStackTrace();
			result=0;
		}
		return result;
	}

 

 

public void testCopyMethod(){
		IMonitorService monitorService=new MonitorServiceImpl();
		String sourceFile="d:\\temp\\testcopy\\source\\*.*";
		String targetDir="d:\\temp\\testcopy\\target";
		try {
			int number=monitorService.copyFiles(sourceFile, targetDir);
			System.out.println("复制了"+number+"个文件");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

 

 

 

注意：源文件或者目的文件必须用双斜杠，用反斜杠不行。。。。

 

另外，中文字符串的长度其实和英文的计算方法一样。但是这里通过CMD调用返回后的值确实诡异，所以截取是[3,5).

 

RefUrl:http://stackoverflow.com/questions/592262/cmd-file-copy-from-java