Android在线支付

今天照着教程做了一遍。毕竟不是高级工程师，有些东西只是停留在照葫芦画瓢。通过这一次和前几天的网络编程，知道了大体的流程。
现在会的大概就这两样：
一。能够跟着网上给的API，结合教程，七七八八把代码敲出来（暂时不能仅照着API完全独立把代码敲出来）。
二。同时由于软件环境的不同，报的错千奇百怪，但能有效地解决。

好了，废话不多说了。

1.下载Ping++SDK

网址https://www.pingxx.com/dlsdk。当然要先注册。
Server端选择Java，Client端选择Android

2.Server端

新建Dynamic Web Project（PingXX）
新建servlet。配置如下：

PayServlet.java

package com.example.PayServlet;import java.io.IOException;import java.io.PrintWriter;import java.util.HashMap;import java.util.Map;import javax.servlet.ServletException;import javax.servlet.ServletInputStream;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.google.gson.Gson;import com.pingplusplus.Pingpp;import com.pingplusplus.exception.PingppException;import com.pingplusplus.model.Charge;/** * Servlet implementation class PayServlet */@WebServlet("/PayServlet")public class PayServlet extends HttpServlet {    private static final long serialVersionUID = 1L;    public PayServlet() {        super();    }    protected void doGet(HttpServletRequest request,            HttpServletResponse response) throws ServletException, IOException {        doPost(request, response);    }    protected void doPost(HttpServletRequest request,            HttpServletResponse response) throws ServletException, IOException {        request.setCharacterEncoding("UTF-8");        response.setContentType("application/json;charset=UTF-8");        // apiKey在ping++主页的账户和设置里面有        Pingpp.apiKey = "sk_test_yzvDa99GqTeLanvvbDOy9qrT";        // 获取客户端参数        ServletInputStream in = request.getInputStream();        byte[] bytes = new byte[512];        int len = -1;        StringBuffer sb = new StringBuffer();        while ((len = in.read(bytes)) != -1) {            sb.append(new String(bytes, 0, len));        }        Gson gson = new Gson();        PaymentRequest pay = gson.fromJson(sb.toString(), PaymentRequest.class);        // 获得 charge        Map<String, Object> chargeMap = new HashMap<String, Object>();        // 某些渠道需要添加extra参数，具体参数详见接口文档        chargeMap.put("amount", pay.amount);        chargeMap.put("currency", "cny");        chargeMap.put("subject", "购买一款时髦的手表");// 商品名称        chargeMap.put("body", "瑞士名表");        chargeMap.put("order_no", "1234567890");//每次测试都要修改这里的order_no        chargeMap.put("channel", pay.channel);        chargeMap.put("client_ip", request.getRemoteAddr());        Map<String, String> app = new HashMap<String, String>();        app.put("id", "app_qTenzP0CO4CGirvL");// 应用ID        chargeMap.put("app", app);        try {            // 发起交易请求            Charge charge = Charge.create(chargeMap);            // 向客户端发送消息            PrintWriter pw = response.getWriter();            pw.write(charge.toString());        } catch (PingppException e) {            e.printStackTrace();        }    }    //这个class要放在这个Java文件里，不然会报错classNotDefException。原因不明    //调试了好久    class PaymentRequest {        String channel;// 支付渠道        int amount;// 价钱        public PaymentRequest(String channel, int amount) {            this.channel = channel;            this.amount = amount;        }    }}

服务器端参考下载下来的pingpp-java-master里面的example。依赖包里面也有（我上传的代码中WEB-INF里面还有index.jsp，是用来测试Server端是否成功用的）

3.Client端

新建Android工程Ping
MainActivity.java

package com.example.ping;import java.io.IOException;import android.app.Activity;import android.app.AlertDialog.Builder;import android.content.Intent;import android.os.AsyncTask;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import com.google.gson.Gson;import com.pingplusplus.android.PaymentActivity;import com.squareup.okhttp.MediaType;import com.squareup.okhttp.OkHttpClient;import com.squareup.okhttp.Request;import com.squareup.okhttp.RequestBody;import com.squareup.okhttp.Response;public class MainActivity extends Activity implements OnClickListener {    // 银联支付渠道    private static final String CHANNEL_UPACP = "upacp";    private static final int REQUEST_CODE_PAYMENT = 1;    private Button button;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        button = (Button) findViewById(R.id.pay);        button.setOnClickListener(this);    }    private String URL = "http://10.107.56.64:8080/PingXX/PayServlet";    class PaymentTask extends AsyncTask<PaymentRequest, Void, String> {        @Override        protected void onPreExecute() {            // 按键点击之后的禁用，防止重复点击            button.setOnClickListener(null);        }        @Override        protected String doInBackground(PaymentRequest... params) {            PaymentRequest paymentRequest = params[0];            String data = null;            String json = new Gson().toJson(paymentRequest);            try {                // 向Your Ping++ Server SDK请求数据                // URL服务器地址                data = postJson(URL, json);            } catch (Exception e) {                e.printStackTrace();            }            return data;        }        /**         * 获得服务端的charge，调用ping++ sdk。         */        @Override        protected void onPostExecute(String data) {            if (null == data) {                showMsg("请求出错", "请检查URL", "URL无法获取charge");                return;            }            Log.d("charge", data);            Intent intent = new Intent(MainActivity.this, PaymentActivity.class);            intent.putExtra(PaymentActivity.EXTRA_CHARGE, data);            startActivityForResult(intent, REQUEST_CODE_PAYMENT);        }    }    private static String postJson(String url, String json) throws IOException {        MediaType type = MediaType.parse("application/json; charset=utf-8");        RequestBody body = RequestBody.create(type, json);        // 封装请求对象        Request request = new Request.Builder().url(url).post(body).build();        OkHttpClient client = new OkHttpClient();        // 执行请求        Response response = client.newCall(request).execute();        // 返回请求结果        return response.body().string();    }    /**     * onActivityResult 获得支付结果，如果支付成功，      * 服务器会收到ping++ 服务器发送的异步通知。 最终支付成功根据异步通知为准     */    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        button.setOnClickListener(this);        // 支付页面返回处理        if (requestCode == REQUEST_CODE_PAYMENT) {            if (resultCode == Activity.RESULT_OK) {                String result = data.getExtras().getString("pay_result");                /*                 * 处理返回值 "success" - payment succeed "fail" - payment failed                 * "cancel" - user canceld "invalid" - payment plugin not                 * installed                 */                String errorMsg = data.getExtras().getString("error_msg"); // 错误信息                String extraMsg = data.getExtras().getString("extra_msg"); // 错误信息                showMsg(result, errorMsg, extraMsg);            }        }    }    public void showMsg(String title, String msg1, String msg2) {        String str = title;        if (null != msg1 && msg1.length() != 0) {            str += "\n" + msg1;        }        if (null != msg2 && msg2.length() != 0) {            str += "\n" + msg2;        }        Builder builder = new Builder(MainActivity.this);        builder.setMessage(str);        builder.setTitle("提示");        builder.setPositiveButton("OK", null);        builder.create().show();    }    class PaymentRequest {        String channel;// 支付渠道        int amount;// 价钱        public PaymentRequest(String channel, int amount) {            this.channel = channel;            this.amount = amount;        }    }    @Override    public void onClick(View v) {        if (v.getId() == R.id.pay) {            new PaymentTask().execute(new PaymentRequest(CHANNEL_UPACP, 100));        }    }}

客户端端参考下载下来的pingpp-android-master里面的example。

测试结果
界面

准备进入支付页面

进入支付页面

付款成功：

代码链接http://download.csdn.net/detail/lxj1137800599/9488682