关于java:PyCmdUtiljava

import com.alibaba.fastjson.JSON;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;public class PyCmdUtil {    public static final String BLANK = " ";    public static final String ERROR = "error";    public static final String DATA = "data";    public static final Map<String, List<String>> executeCmd(String cmdPre, String... args) {        Map map = new HashMap();        List errorList = new ArrayList();        List dataList = new ArrayList();        try {            StringBuilder sb = new StringBuilder(cmdPre);            for (String arg : args) {                sb.append(BLANK);                sb.append(arg);            }            System.out.println("executeCmd start:" + sb.toString());            Process process = Runtime.getRuntime().exec(sb.toString());            InputStream is = process.getInputStream();            InputStreamReader isr = new InputStreamReader(is);            BufferedReader br = new BufferedReader(isr);            String content = br.readLine();            while (content != null) {                System.out.println(content);                dataList.add(content);                content = br.readLine();            }            BufferedReader errorReader = new BufferedReader(new InputStreamReader(process.getErrorStream()));            content = errorReader.readLine();            while (content != null) {                System.out.println(content);                errorList.add(content);                content = br.readLine();            }        } catch (IOException e) {            e.printStackTrace();        }        map.put(ERROR, errorList);        map.put(DATA, dataList);        System.out.println("executeCmd result:" + JSON.toJSONString(map));        return map;    }}