java执行shell/cmd命令

try {

            Process p =Runtime.getRuntime().exec("chmod 777 /home/bomb/MoveToy/WebRoot/a.sh " );

            p.waitFor();

            Process pro = Runtime.getRuntime().exec(" /home/bomb/MoveToy/WebRoot/./a.sh " + num);

            pro.waitFor();

            System.out.println("run");

            java.io.InputStream out = pro.getInputStream();

            int i;

            String a = "";

            String b = "";

            int n=0;

            ArrayList<String> tmp = new ArrayList<String>() ;

            while ((i = out.read()) != -1) {

                char c=(char)i;

                if(i==10)

                {

                    //System.out.println(a);

                    tmp.add(a);

                    a="";

                    continue;

                }

                if(i!=13&&i!=10)

                { //System.out.println(n++ +" : "+c+" "+i);

                    a += c;

                }

            }

            int len=tmp.size();

            //提取耗散值

            String [] tmphaosan=new String [len];

            for(i=0;i<len;i++)

            {

                tmphaosan[i]=tmp.get(i).split(" ")[1];

                //System.out.println(tmp.get(i).split(" ")[1].split("\\n")[0]);

            }

            String ans="";

            String anss="";

            for(i=1;i<len;i++)

            {

                ans="";

                String t1=tmp.get(i-1).split(" ")[0];

                String t2=tmp.get(i).split(" ")[0];

                for(int j=0;j<t1.length();j++)

                {

                    //确保空格在后

                    if(t2.charAt(j)=='E')

                    {

                        //System.out.println(j+1+" "+t1.charAt(j)+" "+t2.charAt(j));

                        ans=(j+1)+","+ans;

                    }

                    if(t1.charAt(j)=='E')

                    {

                        ans+=(j+1);

                        ans+=",";

                    }

                }

                ans+=tmphaosan[i];

                ans+=';';

                anss+=ans;

            }

            //System.out.println(anss);

            PrintWriter pw = response.getWriter();

            pw.write(anss);

        } catch (Exception e) {

            System.out.println(num);

            e.printStackTrace();

        }