JAVA实现微信App支付（二）

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以前说了微信公众号支付然而微信公众App支付和微信公众号类似如果你看了开发文档的话。
只需要调用这个方法就可以了
/** * 微信支付工具类 * @ClassName: WeixiPayUtil  * @Description: 微信支付工具 * @author Administrator * @date 2017年4月28日 下午12:02:12  * */public class WeixinPayUtil {    private static Logger logger = LoggerFactory.getLogger(WeixinPayUtil.class);    public static final String RETURN_CODE_SUCC = "SUCCESS";    public static final String RETURN_CODE_FAIL = "FAIL";    protected static HttpServletRequest request = ServletActionContext.getRequest();    protected static HttpServletResponse response = ServletActionContext.getResponse();    public static SortedMap<String,String> getOrderInfoMap(Map<String, Object> mrsInfo,  List<Map<String, Object>> productList){        SortedMap<String,String> orderInfo = new TreeMap<String, String>();        orderInfo.put("userId", mrsInfo.get("userId").toString());        orderInfo.put("orderNum", mrsInfo.get("orderNum").toString());        orderInfo.put("orderMoney", mrsInfo.get("allMoney").toString());        String subject = "",body="";        int bookCount = 0;        if(productList!=null && productList.size()>0){            for (Map<String, Object> shopOrderDetail : productList) {                subject = subject + shopOrderDetail.get("productName") + " , ";                bookCount = bookCount + StrUtil.getIntValue(shopOrderDetail.get("productCount").toString());            }        }        if(subject.contains(",")){            if(subject.length()>25){                subject = subject.substring(0,25)+"......";            }             subject = subject.substring(0,subject.length()-3);// 去掉最后一个,号或者最后一个.号        }        body = "订单："+mrsInfo.get("orderNum")+" 共包含"+bookCount+"件商品。";        orderInfo.put("body", body);        orderInfo.put("detail", subject);        return orderInfo;    }/**     * 获取APP预支付ID     * @param request     * @param response     * @param orderInfo 包括字段orderNum，orderMoney(单位:分)，myNotifyUrl(自定义回调地址时,可空)，detail(可空)，body     * @return     */    public static String getWxAppPrepayId(HttpServletRequest request, HttpServletResponse response, Map<String, String> orderInfo, TSysWxPayConfigCustom wxPayConfigCustom, String notifyUrl){        String methodName = "getWxAppPrepayId";        // 网页授权后获取传递的参数        String myNotifyUrl = orderInfo.get("myNotifyUrl");          String orderNum = orderInfo.get("orderNum");         String orderMoney = orderInfo.get("orderMoney");        // 商品描述        String body = orderInfo.get("body");        String detail = orderInfo.get("detail");        String prepayId = getAppPrepayIdRedis(orderNum);        if (StringUtil.isNotEmpty(prepayId)) {            return prepayId;        }        if(StringUtil.isEmptyAnyOf(orderNum, orderMoney, body)){            logger.error(getClassName() +"类"+ methodName +"方法中orderNum,orderMoney,body参数必须都不为空！");            return "-1";        }        // 金额转化为分为单位        float sessionmoney = Float.parseFloat(orderMoney);        String finalmoney = String.format("%.2f", sessionmoney);        String total_fee = Integer.parseInt(finalmoney.replace(".", "")) + "";        // 商户相关资料         String appid = wxPayConfigCustom.getOpenAppId();        String appsecret = wxPayConfigCustom.getOpenSecret();        String partnerkey = wxPayConfigCustom.getOpenKey();        // 商户号        String mch_id = wxPayConfigCustom.getOpenMchId();        // 随机数         String nonce_str = Sha1Util.getNonceStr();        // 附加数据        logger.info(getClassName() +"类"+ methodName +"方法中myNotifyUrl="+ myNotifyUrl);        String attach = getAttachKey(orderNum, myNotifyUrl);        // 商户订单号        String out_trade_no = orderNum;        // 订单生成的机器 IP        String spbill_create_ip = request.getRemoteAddr();        // 这里notify_url是 支付完成后微信发给该链接信息，可以判断会员是否支付成功，改变订单状态等。        String url = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + request.getContextPath();        String notify_url = url;        if (StringUtil.isEmpty(notifyUrl)) {            notify_url += WeixinConfig.notify_url;        } else {            notify_url += notifyUrl;        }         String  trade_type = WeixinConfig.trade_type_app;           SortedMap<String, String> packageParams = new TreeMap<String, String>();        packageParams.put("appid", appid);          packageParams.put("mch_id", mch_id);          packageParams.put("nonce_str", nonce_str);          packageParams.put("body", body);          if (StringUtil.isNotEmpty(detail)) {            packageParams.put("detail", detail);        }        packageParams.put("attach", attach);          packageParams.put("out_trade_no", out_trade_no);          packageParams.put("total_fee", total_fee);          packageParams.put("spbill_create_ip", spbill_create_ip);          packageParams.put("notify_url", notify_url);          packageParams.put("trade_type", trade_type);          RequestHandler reqHandler = new RequestHandler(request, response);        reqHandler.init(appid, appsecret, partnerkey);        String sign = reqHandler.createSign(packageParams);        String xml = "<xml>" + "<appid>" + appid + "</appid>"                 + "<mch_id>" + mch_id + "</mch_id>"                 + "<nonce_str>" + nonce_str + "</nonce_str>"                 + "<sign>" + sign + "</sign>"                 + "<body><![CDATA[" + body + "]]></body>";        if (StringUtil.isNotEmpty(detail)) {            xml += "<detail><![CDATA[" + detail + "]]></detail>";        }        xml += "<attach>" + attach + "</attach>"                 + "<out_trade_no>" + out_trade_no + "</out_trade_no>"                 + "<total_fee>" + total_fee + "</total_fee>"                 + "<spbill_create_ip>" + spbill_create_ip + "</spbill_create_ip>"                + "<notify_url>" + notify_url + "</notify_url>"                 + "<trade_type>" + trade_type + "</trade_type>"                + "</xml>";        logger.info(getClassName()+"类 "+ methodName +"方法，xml="+ xml);        String createOrderURL = WeixinConfig.prepay_url;        try {            prepayId = GetWxOrderno.getPayNo(createOrderURL, xml);            setAppPrepayIdRedis(orderNum, prepayId);            logger.info(getClassName()+"类 "+ methodName +"方法中生成 prepayId="+prepayId+"||orderNum="+orderNum);        } catch (Exception e) {            logger.error(getClassName()+"类 "+ methodName +"方法中生成 prepayId 出错了", e);            e.printStackTrace();        }        return prepayId;    }   }package com.shopn.util;import java.io.IOException;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.SortedMap;import java.util.TreeMap;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.params.HttpProtocolParams;import org.apache.http.util.EntityUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import net.sf.json.JSONObject;public class weixiPayUtil {public static Map<String,String> createWxAppSignByPrepayId(HttpServletRequest request, HttpServletResponse response, String prepayId, TSysWxPayConfigCustom wxPayConfigCustom){        SortedMap<String, String> finalpackage = new TreeMap<String, String>();        String appid = WeixinpayConfig.wxappappid;        String appsecret = WeixinpayConfig.wxappappsecret;        String partner = WeixinpayConfig.wxapppartner;        String partnerkey = WeixinpayConfig.wxapppartnerkey;        if(wxPayConfigCustom!=null){            if(!StringUtil.isEmptyOrNullStr(wxPayConfigCustom.getOpenAppId())){                appid = wxPayConfigCustom.getOpenAppId();                appsecret = wxPayConfigCustom.getOpenSecret();                partner = wxPayConfigCustom.getOpenMchId();                partnerkey = wxPayConfigCustom.getOpenKey();            }        }        logger.info("createWxAppSignByPrepayId 方法中生成 appid="+appid+"|appsecret="+appsecret+"|partner"+partner+"||partnerkey="+partnerkey);        String nonce_str = Sha1Util.getNonceStr();        String timestamp = Sha1Util.getTimeStamp();        String packages = "Sign=WXPay";        finalpackage.put("appid", appid);        finalpackage.put("partnerid", partner);        finalpackage.put("prepayid", prepayId);        finalpackage.put("noncestr", nonce_str);          finalpackage.put("timestamp", timestamp);          finalpackage.put("package", packages);          //finalpackage.put("signType", "MD5");        RequestHandler reqHandler = new RequestHandler(request, response);        reqHandler.init(appid, appsecret, partnerkey);        String finalSign = reqHandler.createSign(finalpackage);        logger.info("createSignByPrepayId方法中生成 finalSign "+finalSign);        Map<String,String> map = new HashMap<String, String>();        map.put("partnerId", partner);        map.put("prepayId", prepayId);        map.put("sign", finalSign);        map.put("nonceStr", nonce_str);        map.put("timeStamp", timestamp);        map.put("appid", appid);        return map;    }}
希望对开发微信支付的朋友有帮助。
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