// 运行操作系统命令，并将输出发送到控制台。
package io;
import java.io.*;
public class OSExecute {
public static void command(String command) {
boolean err = false;
try {
// 根据传入的命令序列，创建一个进程
Process process = new ProcessBuilder(command.split(" ")).start();
// 获得该进程的输出流
BufferedReader results = new BufferedReader(
new InputStreamReader(process.getInputStream()));
String s;
while((s = results.readLine()) != null)
System.out.println(s);
// 获得该进程的错误流
BufferedReader errors = new BufferedReader(
new InputStreamReader(process.getErrorStream(), "GBK"));
// 如果出现问题，报告错误并将非零值返回给调用进程：
while((s = errors.readLine()) != null) {
System.err.println(s);
err = true;
}
} catch(Exception e) {
// 如果是Windows 2000，它会抛出默认命令行的异常：
if(!command.startsWith("CMD /C"))
command("CMD /C" + command);
else
throw new RuntimeException(e);
}
// 如果进程自身在执行过程中产生错误，则抛出单独定制的运行时异常
if(err)
throw new OSExecuteException("Errors executing " + command);
}
}
package io;
public class OSExecuteDemo {
public static void main(String[] args) {
// 反编译OSExecuteDemo
OSExecute.command("javap /bin/io/OSExecuteDemo");
}
}
运行该程序后，结果如下：
Compiled from "OSExecuteDemo.java"
public class io.OSExecuteDemo {
public io.OSExecuteDemo();
public static void main(java.lang.String[]);
}
警告: 二进制文件/bin/io/OSExecuteDemo包含io.OSExecuteDemo
Exception in thread "main" io.OSExecuteException: Errors executing javap /bin/io/OSExecuteDemo
at io.OSExecute.command(OSExecute.java:34)
at io.OSExecuteDemo.main(OSExecuteDemo.java:6)
反编译命令执行正常，但老是抛出一个异常。请问这是什么原因造成的？如何解决？
