在XmlRpc中,已弃用JAVA中WebServer类的addHandler方法,该方法的另一种替代方法是什么?

问题描述

我知道这个问题已经问过了。在前面的问题中,有一个链接可以从中找到有关org.apache.xmlrpc的详细信息,但我无法确定WebServer类的addHandler方法的替代方法。 / p>

我有两个项目

    1    Server
            Server project consist of
                1.1 AreaServer
                1.2 AreaHandler
    2   Client
            Client project consist of
        2.1 Client
        

AreaHandler类将给定半径的圆的区域换位。 AreaServer使用AreaHandler类。

AreaServer

package webtutorial;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.xmlrpc.webserver.WebServer;

/**
 *
 * @author Dev Parzival
 */
public class AreaServer {
    public static void main(String $[]){
        try {
            startServer($);
        } catch (IOException ex) {
            Logger.getLogger(AreaServer.class.getName()).log(Level.SEVERE,null,ex);
        }
    }
    public static void startServer(String $[]) throws IOException{
        WebServer server;
        server=new WebServer(Integer.parseInt($[0]));
        server.addHandler("area",new AreaHandler());
        server.start();
    }
}

AreaHandler

package webtutorial;

/**
 *
 * @author Dev Parzival
 */
public class AreaHandler {
    
    /**
     *
     * @param radius radius of circle whose area has to be computed
     * @return area of the circle whose type is double
     */
    public double circleArea(double radius){
        return Math.PI*radius*radius;
    }
}

客户

package client;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.xmlrpc.XmlRpcException;
import org.apache.xmlrpc.client.XmlRpcclient;

/**
 *
 * @author Dev Parzival
 * @date   02-Sep-2020
 * @time   08:46:01
 */
public class Client {

    /**
     * @param $ the command line arguments,represent the radius of the circle whose area is to be computer via the server.
     */
    public static void main(String[] $) {
        // Todo code application logic here
        Client client=new Client();
        double radius=Double.parseDouble($[0]);
        try{
            double area=client.areaCircle(radius);
            System.out.println("Area of the circle is : "+area);
        }
        catch(Exception ex){
            System.out.println(ex);
        }
    }
    public double areaCircle(double radius) throws IOException,XmlRpcException{
        double area=0;
        XmlRpcclient client=new XmlRpcclient();
        ArrayList<Double> vec=new ArrayList<Double>();
        vec.add(new Double(radius));
        Object result=client.execute("area.circleArea",vec);
        area=Double.parseDouble(result.toString());
        return area;
    }
}

不推荐使用addHandler方法,所以我想知道如何做到这一点

server.addHandler("area",new AreaHandler());

将AreaHandler类与area链接在一起,因此当客户端请求服务器时,它将返回该区域。

解决方法

您仍然可以使用不推荐使用的方法。您正在使用哪个版本的xmlrpc?

文档表明您可以使用PropertyHandlerMapping从属性文件添加映射。

      PropertyHandlerMapping phm = new PropertyHandlerMapping();
      /* Load handler definitions from a property file.
       * The property file might look like:
       *   Calculator=org.apache.xmlrpc.demo.Calculator
       *   org.apache.xmlrpc.demo.proxy.Adder=org.apache.xmlrpc.demo.proxy.AdderImpl
       */
     phm.load(Thread.currentThread().getContextClassLoader(),"MyHandlers.properties");
     xmlRpcServer.setHandlerMapping(phm);

或者您可以直接添加它们:

      /* You may also provide the handler classes directly,* like this:
       * phm.addHandler("Calculator",*     org.apache.xmlrpc.demo.Calculator.class);
       * phm.addHandler(org.apache.xmlrpc.demo.proxy.Adder.class.getName(),*     org.apache.xmlrpc.demo.proxy.AdderImpl.class);
       */

请参阅:https://ws.apache.org/xmlrpc/server.html

您仍然可以添加处理程序,如下所示:

WebServer server = new WebServer(Integer.parseInt($[0]));
PropertyHandlerMapping handlerMapping = new PropertyHandlerMapping();
handlerMapping.addHandler("area",AreaHandler.class);
XmlRpcServer xmlRpcServer = webServer.getXmlRpcServer();
xmlRpcServer.setHandlerMapping(handlerMapping);

XmlRpcServerConfigImpl serverConfig = (XmlRpcServerConfigImpl) xmlRpcServer.getConfig();
serverConfig.setEnabledForExtensions(true);
serverConfig.setContentLengthOptional(false);

server.start();