java jsp调用shell（带参数）脚本并返回值

test.jsp

<%@ page language="java" import="java.util.List,java.util.ArrayList,java.io.InputStreamReader,java.io.BufferedReader" pageEncoding="utf-8"%>
<%
 List<String> processList = new ArrayList<String>();  
 String str="";
        try { 

　　//11 aa为参数用空格隔开，也可以不带参数，与前面脚本用空格隔开，脚本带上绝对路径
         Process process = Runtime.getRuntime().exec("sh /usr/local/jboss5/server/default/deploy/sanguo_root.war/test.sh 11 aa");
         int exitValue = process.waitFor();
         //out.print(exitValue);脚本正确执行返回值为0
         if(0!=exitValue)
          process.destroy();
            BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));  
            String line = "";  
            while ((line = input.readLine()) != null) {  
                processList.add(line);  
            }  
            input.close();  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
  
        for (String line : processList) {
          str+=line;
           
        }  
        out.print(str+"");
%>