使用Java来执行bat命令，如果bat操作时间过长，有可能导致阻塞问题，而且不会执行bat直到关闭服务器。

如：

复制代码 代码如下:

Runtime r=Runtime.getRuntime();

Process p=null;

try{

String path = "D:/test.bat";

p = r.exec("cmd.exe /c "+path);

p.waitFor();

}catch(Exception e){

System.out.println("运行错误:"+e.getMessage());

e.printStackTrace();

}

一般java的exec是没有帮你处理线程阻塞问题的，需要手动处理。

处理后：

复制代码 代码如下:

Runtime r=Runtime.getRuntime();

Process p=null;

try{

String path = "D:/test.bat";

p = r.exec("cmd.exe /c "+path);

StreamGobbler errorGobbler = new StreamGobbler(p.getErrorStream(), "ERROR");

errorGobbler.start();

StreamGobbler outGobbler = new StreamGobbler(p.getInputStream(), "STDOUT");

outGobbler.start();

p.waitFor();

}catch(Exception e){

System.out.println("运行错误:"+e.getMessage());

e.printStackTrace();

}

StreamGobbler 类如下：

复制代码 代码如下:

package com.test.tool;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.PrintWriter;

/**

* 用于处理Runtime.getRuntime().exec产生的错误流及输出流

*/

public class StreamGobbler extends Thread {

InputStream is;

String type;

OutputStream os;

StreamGobbler(InputStream is, String type) {

this(is, type, null);

}

StreamGobbler(InputStream is, String type, OutputStream redirect) {

this.is = is;

this.type = type;

this.os = redirect;

}

public void run() {

InputStreamReader isr = null;

BufferedReader br = null;

PrintWriter pw = null;

try {

if (os != null)

pw = new PrintWriter(os);

isr = new InputStreamReader(is);

br = new BufferedReader(isr);

String line=null;

while ( (line = br.readLine()) != null) {

if (pw != null)

pw.println(line);

System.out.println(type + ">" + line);

}

if (pw != null)

pw.flush();

} catch (IOException ioe) {

ioe.printStackTrace();

} finally{

try {

pw.close();

br.close();

isr.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

运行bat，就不会阻塞了。