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<WebApp> getTomcatWebAppData() {
        List<WebApp> webAppArrayList = new ArrayList<WebApp>();
        String data = TomcatHTMLUtil.message("http://localhost:9000/manager/text/list");
        String[] oldDataStrs = data.split("/");
        if (oldDataStrs[0].startsWith("OK")) {
            for (int i = 1; i < oldDataStrs.length; i++) {
                String[] names = oldDataStrs[i].split(":");//长度为4 0 ：忽略 1：状态 2：0 状态   3：名称
                WebApp webApp = new WebApp();
                webApp.setName(names[3]);
                if (names[1].equals("running")) {
                    if (oldDataStrs[i].split(":")[2].equals("0")) {
                        webApp.setStatus("运行");
                    } else {
                        webApp.setStatus("异常");
                    }
                } else if (names[1].equals("stopped")) {
                    if (oldDataStrs[i].split(":")[2].equals("0")) {
                        webApp.setStatus("停止");
                    } else {
                        webApp.setStatus("异常");
                    }
                } else {
                    webApp.setStatus("异常");
                }
                webAppArrayList.add(webApp);
            }
            //}
        }
        return webAppArrayList;
    }
    /**
     * 重新部署一个项目
     *
     * @param webAppName
     * @return
     */
    public boolean reloadWebApp(String webAppName) {
        String data = TomcatHTMLUtil.message("http://localhost:9000/manager/text/reload?path=/" + webAppName);
        if (data.startsWith("OK")) {
            return true;
        } else {
            return false;
        }
    }
    /**
     * 停止一个项目
     *
     * @param webAppName
     * @return
     */
    public boolean stopWebApp(String webAppName) {
        String data = TomcatHTMLUtil.message("http://localhost:9000/manager/text/stop?path=/" + webAppName);
        if (data.startsWith("OK")) {
            return true;
        } else {
            return false;
        }
    }
    /**
     * 开始一个项目
     *
     * @param webAppName
     * @return
     */
    public boolean startWebApp(String webAppName) {
        String data = TomcatHTMLUtil.message("http://localhost:9000/manager/text/start?path=/" + webAppName);
        if (data.startsWith("OK")) {
            return true;
        } else {
            return false;
        }
    }
}
package com.baibin.utils;
/**
 * Created by ibm on 2017/3/22.
 */
public class WebApp {
    /**
     * 项目名称
     */
    private String name;
    /**
     * 运行状态 "成功" or "停止"
     */
    private String status;
    @Override
    public String toString() {
        return "WebApp{" +
                "name='" + name + '\'' +
                ", status='" + status + '\'' +
                '}';
    }
    public String getName() {
        return name;
    }
    public String getStatus() {
        return status;
    }
    public void setName(String name) {
        this.name = name;
    }
    public void setStatus(String status) {
        this.status = status;
    }
}

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