java服务端微信APP支付接口详解

一、微信APP支付接入商户服务中心

[申请流程指引] (https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&id=open1419317780&token=84f23b4e9746c5963128711f225476cfd49ccf8c&lang=zh_CN)

二、开始开发

1、配置相关的配置信息

1.1、配置appid(Android)、mch_id(ios)、微信支付后的回调地址

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sys.properties配置文件:

 

  appid=wx***************1

  mch_id=1********2

  notify_url=http://6*.***.***.**/returnmsg.do

 

//回调通知的地址,一定是要可以直接访问的地址

2、微信支付–下单

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@ResponseBody

@RequestMapping(value = "/weixinpay.do", produces = "text/html;charset=UTF-8",method={RequestMethod.POST})

  public static String weixinpay(String body, //商品描述

      String detail, //商品详情

      String attach, //附加数据,在查询API和支付通知中原样返回,该字段主要用于商户携带订单的自定义数据

      String out_trade_no, //商户系统内部的订单号,32个字符内、可包含字母, 其他说明见商户订单号

      String total_price, //订单总金额,单位为分,详见支付金额

      String spbill_create_ip //用户端实际ip

 

      ) throws Exception {

 

    WeixinConfigUtils config = new WeixinConfigUtils();

    //参数组

    String appid = config.appid;//微信开放平台审核通过的应用APPID

    System.out.println("appid是:"+appid);

    String mch_id = config.mch_id;

    System.out.println("mch_id是:"+mch_id);

    String nonce_str = RandCharsUtils.getRandomString(16);

    System.out.println("随机字符串是:"+nonce_str);

 

 

    body = body;//"测试微信支付0.01_2";

    detail = detail;//"0.01_元测试开始";

    //attach = attach;//"备用参数,先留着,后面会有用的";

    //String out_trade_no = OrderUtil.getOrderNo();//"2015112500001000811017342394";

 

    double totalfee =0;

    try{

      totalfee=Double.parseDouble(total_price);////单位是分,即是0.01元

    }catch (Exception e) {

      totalfee=0;

    }

    int total_fee=(int) (totalfee*100);

    spbill_create_ip = spbill_create_ip;//"127.0.0.1";

 

    String time_start = RandCharsUtils.timeStart();

    System.out.println(time_start);

    String time_expire = RandCharsUtils.timeExpire();

    System.out.println(time_expire);

    String notify_url = config.notify_url;

    System.out.println("notify_url是:"+notify_url);

    String trade_type = "APP";

 

    //参数:开始生成签名

    SortedMap parameters = new TreeMap();

    parameters.put("appid", appid);

    parameters.put("mch_id", mch_id);

    parameters.put("nonce_str", nonce_str);

    parameters.put("body", body);

    //parameters.put("nonce_str", nonce_str);

    parameters.put("detail", detail);

    parameters.put("attach", attach);

    parameters.put("out_trade_no", out_trade_no);

    parameters.put("total_fee", total_fee);

    parameters.put("time_start", time_start);

    parameters.put("time_expire", time_expire);

    parameters.put("notify_url", notify_url);

    parameters.put("trade_type", trade_type);

    parameters.put("spbill_create_ip", spbill_create_ip);

 

    String sign = WXSignUtils.createSign("UTF-8", parameters);

    System.out.println("签名是:"+sign);

 

 

    Unifiedorder unifiedorder = new Unifiedorder();

    unifiedorder.setAppid(appid);

    unifiedorder.setMch_id(mch_id);

    unifiedorder.setNonce_str(nonce_str);

    unifiedorder.setSign(sign);

    unifiedorder.setBody(body);

    unifiedorder.setDetail(detail);

    unifiedorder.setAttach(attach);

    unifiedorder.setOut_trade_no(out_trade_no);

    unifiedorder.setTotal_fee(total_fee);

    unifiedorder.setSpbill_create_ip(spbill_create_ip);

    unifiedorder.setTime_start(time_start);

    unifiedorder.setTime_expire(time_expire);

    unifiedorder.setNotify_url(notify_url);

    unifiedorder.setTrade_type(trade_type);

 

    System.out.println(MD5Utils.md5("fenxiangzhuyi") + "========================");

 

    //构造xml参数

    String xmlInfo = HttpXmlUtils.xmlInfo(unifiedorder);

 

    String wxUrl = "https://api.mch.weixin.qq.com/pay/unifiedorder";

 

    String method = "POST";

 

    String weixinPost = HttpXmlUtils.httpsRequest(wxUrl, method, xmlInfo).toString();

 

    System.out.println(weixinPost);

 

    ParseXMLUtils.jdomParseXml(weixinPost);

 

 

 

    String json = JsonUtil.xml2jsonString(weixinPost);

 

    System.out.println("=========================================================");

 

    Bean b = JsonUtil.getSingleBean(json, Bean.class);

    if(null!=b){

      WeixinOrder weixin = b.getXml();

      //参数:开始生成签名

      SortedMap par = new TreeMap();

      par.put("appid", weixin.getAppid());

      par.put("partnerid", weixin.getMch_id());

      par.put("prepayid", weixin.getPrepay_id());

      par.put("package", "Sign=WXPay");

      par.put("noncestr", weixin.getNonce_str());

 

      //时间戳

       Date date = new Date();

       long time = date.getTime();

       //mysq 时间戳只有10位 要做处理

       String dateline = time + "";

       dateline = dateline.substring(0, 10);

 

      par.put("timestamp", dateline);

 

      String signnew = WXSignUtils.createSign("UTF-8", par);

      System.out.println("再次签名是:"+signnew);

 

 

      SetPay setPay = new SetPay();

 

      setPay.setAppid(weixin.getAppid());

      setPay.setPartnerid(weixin.getMch_id());

      setPay.setPrepayid(weixin.getPrepay_id());

      setPay.setNoncestr(weixin.getNonce_str());

 

      setPay.setTimestamp(dateline);

      setPay.setSign(signnew);

      setPay.setPack("Sign=WXPay");

 

      JSONObject js = JSONObject.fromObject(setPay);

      StringBuilder msg = new StringBuilder();

      msg.append("{\"code\":\"1\",");

      msg.append("\"msg\":\"查询成功!\",");

      msg.append("\"datas\":");

      msg.append(js.toString());

      msg.append("}");

 

      System.out.println(js);

 

      return msg.toString();

    }

    StringBuilder msg = new StringBuilder();

    msg.append("{\"code\":\"1\",");

    msg.append("\"msg\":\"查询成功!\",");

    msg.append("\"datas\":");

    msg.append("支付失败!");

    msg.append("}");

 

 

    return msg.toString();

 

  }

2.1、微信支付签名算法sign

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package com.wx.weixincontroller.pay.weixin.Utils;

 

import java.util.Iterator;

import java.util.Map;

import java.util.Set;

import java.util.SortedMap;

 

import com.wx.weixin.utils.MD5Utils;

 

/**

 * 微信支付签名

 * @author iYjrg_xiebin

 * @date 2016年10月25日下午4:47:07

 */

public class WXSignUtils {

  //http://mch.weixin.qq.com/wiki/doc/api/index.php?chapter=4_3

  //商户Key:改成公司申请的即可

  //32位密码设置地址:http://www.sexauth.com/ jdex1hvufnm1sdcb0e81t36k0d0f15nc

 

  private static String Key = "***cb**e**ef**c*e*d***e*fd***cb*";

 

  /**

   * 微信支付签名算法sign

   * @param characterEncoding

   * @param parameters

   * @return

   */

  @SuppressWarnings("rawtypes")

  public static String createSign(String characterEncoding,SortedMap parameters){

 

 

    StringBuffer sb = new StringBuffer();

    Set es = parameters.entrySet();//所有参与传参的参数按照accsii排序(升序)

    Iterator it = es.iterator();

    while(it.hasNext()) {

      Map.Entry entry = (Map.Entry)it.next();

      String k = (String)entry.getKey();

      Object v = entry.getValue();

      if(null != v && !"".equals(v)

          && !"sign".equals(k) && !"key".equals(k)) {

        sb.append(k + "=" + v + "&");

      }

    }

    sb.append("key=" + Key);

    System.out.println("字符串拼接后是:"+sb.toString());

    String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toUpperCase();

    return sign;

  }

 

}

2.2、POST提交XML格式的参数

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package com.wx.weixincontroller.pay.weixin.Utils;

 

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

 

import javax.net.ssl.HttpsURLConnection;

 

import com. com.wx.weixin.wxcontroller.pay.weixin.entity.Unifiedorder;

 

/**

 * post提交xml格式的参数

 * @author iYjrg_xiebin

 * @date 2016年10月25日下午3:33:38

 */

public class HttpXmlUtils {

 

  /**

   * 开始post提交参数到接口

   * 并接受返回

   * @param url

   * @param xml

   * @param method

   * @param contentType

   * @return

   */

  public static String xmlHttpProxy(String url,String xml,String method,String contentType){

    InputStream is = null;

    OutputStreamWriter os = null;

 

    try {

      URL _url = new URL(url);

      HttpURLConnection conn = (HttpURLConnection) _url.openConnection();

      conn.setDoInput(true); 

      conn.setDoOutput(true); 

      conn.setRequestProperty("Content-type", "text/xml");

      conn.setRequestProperty("Pragma:", "no-cache");

      conn.setRequestProperty("Cache-Control", "no-cache");

      conn.setRequestMethod("POST");

      os = new OutputStreamWriter(conn.getOutputStream());

      os.write(new String(xml.getBytes(contentType)));

      os.flush();

 

      //返回值

      is = conn.getInputStream();

      return getContent(is, "utf-8");

    } catch (MalformedURLException e) {

      e.printStackTrace();

    } catch (IOException e) {

      e.printStackTrace();

    } finally{

      try {

        if(os!=null){os.close();}

        if(is!=null){is.close();}

      } catch (IOException e) {

        e.printStackTrace();

      }

    }

    return null;

  }

 

  /**

   * 解析返回的值

   * @param is

   * @param charset

   * @return

   */

  public static String getContent(InputStream is, String charset) {

    String pageString = null;

    InputStreamReader isr = null;

    BufferedReader br = null;

    StringBuffer sb = null;

    try {

      isr = new InputStreamReader(is, charset);

      br = new BufferedReader(isr);

      sb = new StringBuffer();

      String line = null;

      while ((line = br.readLine()) != null) {

        sb.append(line + "\n");

      }

      pageString = sb.toString();

    } catch (Exception e) {

      e.printStackTrace();

    } finally {

      try {

        if (is != null){

          is.close();

        }

        if(isr!=null){

          isr.close();

        }

        if(br!=null){

          br.close();

        }

      } catch (IOException e) {

        e.printStackTrace();

      }

      sb = null;

    }

    return pageString;

  }

 

  /**

   * 构造xml参数

   * @param xml

   * @return

   */

  public static String xmlInfo(Unifiedorder unifiedorder){

    //构造xml参数的时候,至少又是个必传参数

    /*

     *

        wx2421b1c4370ec43b

        支付测试

        JSAPI支付测试

        10000100

        1add1a30ac87aa2db72f57a2375d8fec

        http://wxpay.weixin.qq.com/pub_v2/pay/notify.v2.php

        oUpF8uMuAJO_M2pxb1Q9zNjWeS6o

        1415659990

        14.23.150.211

        1

        JSAPI

        0CB01533B8C1EF103065174F50BCA001

      

     */

 

    if(unifiedorder!=null){

      StringBuffer bf = new StringBuffer();

      bf.append("");

 

      bf.append("

      bf.append(unifiedorder.getAppid());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getMch_id());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getNonce_str());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getSign());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getBody());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getDetail());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getAttach());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getOut_trade_no());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getTotal_fee());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getSpbill_create_ip());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getTime_start());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getTime_expire());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getNotify_url());

      bf.append("]]>");

 

      bf.append("

      bf.append(unifiedorder.getTrade_type());

      bf.append("]]>");

 

 

      bf.append("");

      return bf.toString();

    }

 

    return "";

  }

 

 

 

 

  /**

   * post请求并得到返回结果

   * @param requestUrl

   * @param requestMethod

   * @param output

   * @return

   */

  public static String httpsRequest(String requestUrl, String requestMethod, String output) {

    try{

      URL url = new URL(requestUrl);

      HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();

      connection.setDoOutput(true);

      connection.setDoInput(true);

      connection.setUseCaches(false);

      connection.setRequestMethod(requestMethod);

      if (null != output) {

        OutputStream outputStream = connection.getOutputStream();

        outputStream.write(output.getBytes("UTF-8"));

        outputStream.close();

      }

      // 从输入流读取返回内容

      InputStream inputStream = connection.getInputStream();

      InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");

      BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

      String str = null;

      StringBuffer buffer = new StringBuffer();

      while ((str = bufferedReader.readLine()) != null) {

        buffer.append(str);

      }

      bufferedReader.close();

      inputStreamReader.close();

      inputStream.close();

      inputStream = null;

      connection.disconnect();

      return buffer.toString();

    }catch(Exception ex){

      ex.printStackTrace();

    }

 

    return "";

  }

 

}

3、微信支付–回调通知业务处理

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//通知处理类

@ResponseBody

@RequestMapping(value = "/returnmsg.do", produces = "text/html;charset=UTF-8",method={RequestMethod.POST})

   public String returnmsg(HttpServletRequest request, HttpServletResponse response) throws Exception {

 

     // 解析结果存储在HashMap

     Map map = new HashMap();

     InputStream inputStream = request.getInputStream();

 

     // 读取输入流

     SAXReader reader = new SAXReader();

     Document document = reader.read(inputStream);

     // 得到xml根元素

     Element root = document.getRootElement();

     // 得到根元素的所有子节点

     List elementList = root.elements();

 

     // 遍历所有子节点

     for (Element e : elementList) {

       map.put(e.getName(), e.getText());

     }

 

     JSONObject json = JSONObject.fromObject(map);

 

     System.out.println("===消息通知的结果:" + json.toString() + "==========================");

     System.out.println("===return_code===" + map.get("return_code"));

     System.out.println("===return_msg===" + map.get("return_msg"));

     System.out.println("===out_trade_no===" + map.get("out_trade_no"));

 

     //验证签名的过程

 

     //判断是否支付成功

     if(map.get("return_code").equals("SUCCESS")) {

 

         /**

         *支付成功之后的业务处理

         */

 

         // 释放资源

         inputStream.close();

         inputStream = null;

 

 

         //bis.close();

         return "SUCCESS";

       }

 

     }

     if (map.get("return_code").equals("FAIL")) {

 

       /**

        *支付失败后的业务处理

        */

 

         // 释放资源

         inputStream.close();

 

         inputStream = null;

 

         return "SUCCESS";

       }

 

 

     }

 

     // 释放资源

     inputStream.close();

     inputStream = null;

 

     return "SUCCESS";

 

   }

如有不足请指教.

 

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