Android客户端与服务器交互方式（2）

上篇文章中提出了json方式的数据交互（http://blog.csdn.net/lijj325/article/details/72847046）这次来写xmlrpc（wordpress for android）。

一个rpc系统，必然包括2个部分：1.rpc client，用来向rpc server调用方法，并接收方法的返回数据；2.rpc server,用于响应rpc client的请求，执行方法，并回送方法执行结果。RPC是Remote Procedure Call的缩写，翻译成中文就是远程过程调用，是一种在本地的机器上调用远端机器上的一个过程（方法）的技术，这个过程也被大家称为“分布式计算”，是为了提高各个分立机器的“互操作性”而发明出来的技术。

那么怎么实现呢？

1.android端

package com.example.androidclient;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.ArrayList;import java.util.List;import org.apache.http.HttpResponse;import org.apache.http.NameValuePair;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.protocol.HTTP;import org.apache.http.util.EntityUtils;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;public class AndroidClientActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.android_client);        Button sendButton = (Button) findViewById(R.id.send_button);        sendButton.setOnClickListener(new OnClickListener(){            @Override            public void onClick(View v) {                new Thread(new Runnable(){                    @Override                    public void run() {                        HttpPost httpRequest = new HttpPost(http://172.16.99.207:8080/AndroidServer/AndroidServerServlet);                        List<namevaluepair> params = new ArrayList<namevaluepair>();                        params.add(new BasicNameValuePair(clientData, 您好服务器端！));                        try {                            Message message = new Message();                            Bundle bundle = new Bundle();                            httpRequest.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));//设置请求参数项                            HttpClient httpClient = new DefaultHttpClient();                            HttpResponse httpResponse = httpClient.execute(httpRequest);//执行请求返回响应                            if(httpResponse.getStatusLine().getStatusCode() == 200){//判断是否请求成功                                bundle.putString(msg, EntityUtils.toString(httpResponse.getEntity()));                            }else{                                bundle.putString(msg, 没有获取到Android服务器端的响应！);                            }                            message.setData(bundle);                            handler.sendMessage(message);                        } catch (ClientProtocolException e) {                            e.printStackTrace();                        } catch (UnsupportedEncodingException e) {                            e.printStackTrace();                        } catch (IOException e) {                            e.printStackTrace();                        }                    }                }).start();            }        });    }    private Handler handler = new Handler(){        @Override        public void handleMessage(Message message) {            super.handleMessage(message);            Bundle bundle = message.getData();            String msg = bundle.getString(msg);            Toast.makeText(getApplicationContext(), msg, Toast.LENGTH_LONG).show();        }    };}</namevaluepair></namevaluepair>

2.服务器端

package com.ghj.packageofservlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class AndroidServerServlet extends HttpServlet {    private static final long serialVersionUID = 6792396567928634227L;    public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {        response.setContentType(text/plain; charset=UTF-8);        request.setCharacterEncoding(UTF-8);        System.err.println(request.getParameter(clientData));        PrintWriter printWriter = response.getWriter();        printWriter.print(您好Android客户端！);        printWriter.flush();        printWriter.close();    }}

3.xml代码

<!--?xml version=1.0 encoding=UTF-8?--><web-app http:="java.sun.com=" javaee="ns=" version="2.5" web-app_2_5.xsd="xml=" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation="http://java.sun.com/xml/ns/javaee"><servlet>        <servlet-name>AndroidServerServlet</servlet-name>        <servlet-class>com.ghj.packageofservlet.AndroidServerServlet</servlet-class>    </servlet>    <servlet-mapping>        <servlet-name>AndroidServerServlet</servlet-name>        <url-pattern>/AndroidServerServlet</url-pattern>    </servlet-mapping></web-app>

---

参考1.http://www.cnblogs.com/X-knight/p/5406362.html
2.http://www.2cto.com/kf/201501/370468.html
作者：陈帅：原文地址