java服务端–微信APP支付接口

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

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
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2、微信支付–下单

@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<Object,Object> parameters = new TreeMap<Object,Object>();        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<Object,Object> par = new TreeMap<Object,Object>();            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();    }
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2.1、微信支付签名算法sign

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<Object,Object> 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;    }}
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2.2、POST提交XML格式的参数

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        /*         * <xml>               <appid>wx2421b1c4370ec43b</appid>               <attach>支付测试</attach>               <body>JSAPI支付测试</body>               <mch_id>10000100</mch_id>               <nonce_str>1add1a30ac87aa2db72f57a2375d8fec</nonce_str>               <notify_url>http://wxpay.weixin.qq.com/pub_v2/pay/notify.v2.php</notify_url>               <openid>oUpF8uMuAJO_M2pxb1Q9zNjWeS6o</openid>               <out_trade_no>1415659990</out_trade_no>               <spbill_create_ip>14.23.150.211</spbill_create_ip>               <total_fee>1</total_fee>               <trade_type>JSAPI</trade_type>               <sign>0CB01533B8C1EF103065174F50BCA001</sign>            </xml>         */        if(unifiedorder!=null){            StringBuffer bf = new StringBuffer();            bf.append("<xml>");            bf.append("<appid><![CDATA[");            bf.append(unifiedorder.getAppid());            bf.append("]]></appid>");            bf.append("<mch_id><![CDATA[");            bf.append(unifiedorder.getMch_id());            bf.append("]]></mch_id>");            bf.append("<nonce_str><![CDATA[");            bf.append(unifiedorder.getNonce_str());            bf.append("]]></nonce_str>");            bf.append("<sign><![CDATA[");            bf.append(unifiedorder.getSign());            bf.append("]]></sign>");            bf.append("<body><![CDATA[");            bf.append(unifiedorder.getBody());            bf.append("]]></body>");            bf.append("<detail><![CDATA[");            bf.append(unifiedorder.getDetail());            bf.append("]]></detail>");            bf.append("<attach><![CDATA[");            bf.append(unifiedorder.getAttach());            bf.append("]]></attach>");            bf.append("<out_trade_no><![CDATA[");            bf.append(unifiedorder.getOut_trade_no());            bf.append("]]></out_trade_no>");            bf.append("<total_fee><![CDATA[");            bf.append(unifiedorder.getTotal_fee());            bf.append("]]></total_fee>");            bf.append("<spbill_create_ip><![CDATA[");            bf.append(unifiedorder.getSpbill_create_ip());            bf.append("]]></spbill_create_ip>");            bf.append("<time_start><![CDATA[");            bf.append(unifiedorder.getTime_start());            bf.append("]]></time_start>");            bf.append("<time_expire><![CDATA[");            bf.append(unifiedorder.getTime_expire());            bf.append("]]></time_expire>");            bf.append("<notify_url><![CDATA[");            bf.append(unifiedorder.getNotify_url());            bf.append("]]></notify_url>");            bf.append("<trade_type><![CDATA[");            bf.append(unifiedorder.getTrade_type());            bf.append("]]></trade_type>");            bf.append("</xml>");            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 "";    }}
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3、微信支付–回调通知业务处理

 //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<String, String> map = new HashMap<String, String>();            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<Element> 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";        }
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