java如何远程控制tomcat启动关机

package com.baibin.utils;
import sun.misc.BASE64Encoder;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
public class TomcatHTMLUtil {
    public static String message(String operateURL) {
        StringBuffer dataResult = new StringBuffer();
        URL url = null;
        try {
            url = new URL(operateURL);
            URLConnection cOnn= (URLConnection) url.openConnection();
            /**
             * 这里的用户名和密码是由tomcat的%tomcat_home%/conf/tomcat-users.xml里所配置的用户
             */
            String username = "tomcat";
            String password = "tomcat";
            String cOnfiguration= username + ":" + password; // manager角色的用户
            String encodedPassword = new BASE64Encoder().encode(configuration.getBytes());
            conn.setRequestProperty("Authorization", "Basic " + encodedPassword);
            InputStream is = conn.getInputStream();
            BufferedReader bufreader = new BufferedReader(new InputStreamReader(is));
            String line = null;
            while ((line = bufreader.readLine()) != null) {
                dataResult.append(line);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return dataResult.toString();
    }
    /**
     * 获取tomcat正在运行的webApp的参数
     *
     * @return
     */
    public List getTomcatWebAppData() {
        List webAppArrayList = new ArrayList();
        String data = TomcatHTMLUtil.message("http://localhost:9000/manager/text/list");
        String[] oldDataStrs = data.split("/");
        if (oldDataStrs[0].startsWith("OK")) {
            for (int i = 1; i 

<%
    TomcatHTMLUtil util = new TomcatHTMLUtil();
    /*启动ROOT项目*/
    util.startWebApp("ROOT");
    /*关闭ROOT项目*/
    util.stopWebApp("ROOT");
%>