java 执行命令、调用bat文件、调用外部程序的两种方法

/**

* commons-exec.jar

* 根据路径执行文件

* @param path

* @return

* hb

*/

public static String exec(String path){

if(StringUtil.isEmpty(path)){
return null;
}
try {
//创建一个命令行
CommandLine cmdLine = CommandLine.parse(path);
//参数一
cmdLine.addArgument("pararm_1");
//参数二
cmdLine.addArgument("pararm_2");
//执行流
DefaultExecutor executor  = new DefaultExecutor();
//定义一组预期退出值
//executor.setExitValue(1);
executor.setExitValues(null);
//监管机构-监管进程执行时间 --单位为毫秒
ExecuteWatchdog watchdog = new ExecuteWatchdog(10);
executor.setWatchdog(watchdog);

ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
ByteArrayOutputStream errorStream = new ByteArrayOutputStream();
PumpStreamHandler streamHandler = new PumpStreamHandler(outputStream,errorStream);
executor.setStreamHandler(streamHandler);

int ex = executor.execute(cmdLine);

//拿到执行程序中输出内容
String out = outputStream.toString("gbk");

//拿到执行程序中执行异常内容
String error = errorStream.toString("gbk");

Log.info(CommonsExecUtil.class, "Method[exec]执行命令行文件名称：{}，执行输出：{}，执行异常信息：{}，执行结果：{}", path,out,error,ex);
} catch (IOException e) {
e.printStackTrace();
}

return null;
}

public static void main(String[] args) {
exec("D:/svn/1.bat");
}

/[b]****************java直接调用runtime****************************[/b]/

public void runbat(String batName) {

try {

Process ps = Runtime.getRuntime().exec(batName);

InputStream in = ps.getInputStream();

int c;

while ((c = in.read()) != -1) {

System.out.print(c);// 如果你不需要看输出，这行可以注销掉

}

in.close();

ps.waitFor();

} catch (IOException ioe) {
ioe.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("child thread done");
}

}