微信小程式付款
#list
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#第一步
進入小程序，下單，請求下單支付，呼叫小程式登入API來取得Openid,產生商家訂單，這些都是在小程式端完成的業務。
後台程式碼// pages/pay/pay.jsvar app = getApp();
Page({
data: {},
onLoad: function (options) {
// 页面初始化 options为页面跳转所带来的参数
}, /* 微信支付 */
wxpay: function () {
var that = this
//登陆获取code
wx.login({
success: function (res) {
console.log(res.code) //获取openid
that.getOpenId(res.code)
}
});
},
getOpenId: function (code) {
var that = this;
wx.request({
url: "https://api.weixin.qq.com/sns/jscode2session?appid=wxa142513e524e496c&secret=5d6a7d86048884e7c60f84f7aa85253c&js_code=" + code + "&grant_type=authorization_code",
data: {},
method: 'GET',
success: function (res) {
console.log('返回openId')
console.log(res.data)
that.generateOrder(res.data.openid)
},
fail: function () {
// fail
},
complete: function () {
// complete
}
})
}, /**生成商户订单 */
generateOrder: function (openid) {
var that = this
//统一支付
wx.request({
url: 'http://localhost:8070/RMS/pay_pay.action',
method: 'GET',
data: {
total_fee: '5',
body: '支付测试',
attach:'真假酒水'
},
success: function (res) {
console.log(res) var pay = res.data //发起支付
var timeStamp = pay[0].timeStamp;
console.log("timeStamp:"+timeStamp) var packages = pay[0].package;
console.log("package:"+packages) var paySign = pay[0].paySign;
console.log("paySign:"+paySign) var nonceStr = pay[0].nonceStr;
console.log("nonceStr:"+nonceStr) var param = { "timeStamp": timeStamp, "package": packages, "paySign": paySign, "signType": "MD5", "nonceStr": nonceStr };
that.pay(param)
},
})
}, /* 支付 */
pay: function (param) {
console.log("支付")
console.log(param)
wx.requestPayment({
timeStamp: param.timeStamp,
nonceStr: param.nonceStr,
package: param.package,
signType: param.signType,
paySign: param.paySign,
success: function (res) {
// success
console.log("支付")
console.log(res)
wx.navigateBack({
delta: 1, // 回退前 delta(默认为1) 页面
success: function (res) {
wx.showToast({
title: '支付成功',
icon: 'success',
duration: 2000
})
},
fail: function () {
// fail
},
complete: function () {
// complete
}
})
},
fail: function (res) {
// fail
console.log("支付失败")
console.log(res)
},
complete: function () {
// complete
console.log("pay complete")
}
})
}
})登入後複製
package cn.it.shop.action;import java.io.ByteArrayInputStream;import java.io.InputStream;import java.io.UnsupportedEncodingException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import java.util.List;import java.util.Map;import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.Element;import org.dom4j.io.SAXReader;import cn.it.shop.util.MessageUtil;import cn.it.shop.util.PayUtil;import cn.it.shop.util.PaymentPo;import cn.it.shop.util.UUIDHexGenerator;import net.sf.json.JSONArray;import net.sf.json.JSONObject;/**
* @author
* @version 创建时间：2017年1月21日 下午4:59:03
* 小程序端请求的后台action，返回签名后的数据传到前台
*/public class PayAction { private String total_fee;//总金额
private String body;//商品描述
private String detail;//商品详情
private String attach;//附加数据
private String time_start;//交易起始时间
private String time_expire;//交易结束时间
private String openid;//用户标识
private JSONArray jsonArray=new JSONArray(); public String pay() throws UnsupportedEncodingException, DocumentException{
body = new String(body.getBytes("UTF-8"),"ISO-8859-1");
String appid = "替换为自己的小程序ID";//小程序ID
String mch_id = "替换为自己的商户号";//商户号
String nonce_str = UUIDHexGenerator.generate();//随机字符串
String today = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()); String code = PayUtil.createCode(8); String out_trade_no = mch_id+today+code;//商户订单号
String spbill_create_ip = "替换为自己的终端IP";//终端IP
String notify_url = "http://www.weixin.qq.com/wxpay/pay.php";//通知地址
String trade_type = "JSAPI";//交易类型
String openid="替换为用户的openid";//用户标识
/**/
PaymentPo paymentPo = new PaymentPo();
paymentPo.setAppid(appid);
paymentPo.setMch_id(mch_id);
paymentPo.setNonce_str(nonce_str); String newbody=new String(body.getBytes("ISO-8859-1"),"UTF-8");//以utf-8编码放入paymentPo，微信支付要求字符编码统一采用UTF-8字符编码
paymentPo.setBody(newbody);
paymentPo.setOut_trade_no(out_trade_no);
paymentPo.setTotal_fee(total_fee);
paymentPo.setSpbill_create_ip(spbill_create_ip);
paymentPo.setNotify_url(notify_url);
paymentPo.setTrade_type(trade_type);
paymentPo.setOpenid(openid); // 把请求参数打包成数组
Map sParaTemp = new HashMap();
sParaTemp.put("appid", paymentPo.getAppid());
sParaTemp.put("mch_id", paymentPo.getMch_id());
sParaTemp.put("nonce_str", paymentPo.getNonce_str());
sParaTemp.put("body", paymentPo.getBody());
sParaTemp.put("out_trade_no", paymentPo.getOut_trade_no());
sParaTemp.put("total_fee",paymentPo.getTotal_fee());
sParaTemp.put("spbill_create_ip", paymentPo.getSpbill_create_ip());
sParaTemp.put("notify_url",paymentPo.getNotify_url());
sParaTemp.put("trade_type", paymentPo.getTrade_type());
sParaTemp.put("openid", paymentPo.getOpenid()); // 除去数组中的空值和签名参数
Map sPara = PayUtil.paraFilter(sParaTemp); String prestr = PayUtil.createLinkString(sPara); // 把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
String key = "&key=替换为商户支付密钥"; // 商户支付密钥
//MD5运算生成签名
String mysign = PayUtil.sign(prestr, key, "utf-8").toUpperCase();
paymentPo.setSign(mysign); //打包要发送的xml
String respXml = MessageUtil.messageToXML(paymentPo); // 打印respXml发现，得到的xml中有“”不对，应该替换成“_”
respXml = respXml.replace(, "_"); String url = "https://api.mch.weixin.qq.com/pay/unifiedorder";//统一下单API接口链接
String param = respXml; //String result = SendRequestForUrl.sendRequest(url, param);//发起请求
String result =PayUtil.httpRequest(url, "POST", param); // 将解析结果存储在HashMap中
Map map = new HashMap();
InputStream in=new ByteArrayInputStream(result.getBytes());
// 读取输入流
SAXReader reader = new SAXReader();
Document document = reader.read(in); // 得到xml根元素
Element root = document.getRootElement(); // 得到根元素的所有子节点
@SuppressWarnings("unchecked") List elementList = root.elements();
for (Element element : elementList) { map.put(element.getName(), element.getText());
} // 返回信息
String return_code = map.get("return_code");//返回状态码
String return_msg = map.get("return_msg");//返回信息
System.out.println("return_msg"+return_msg);
JSONObject JsonObject=new JSONObject() ; if(return_code=="SUCCESS"||return_code.equals(return_code)){ // 业务结果
String prepay_id = map.get("prepay_id");//返回的预付单信息
String nonceStr=UUIDHexGenerator.generate();
JsonObject.put("nonceStr", nonceStr);
JsonObject.put("package", "prepay_id="+prepay_id);
Long timeStamp= System.currentTimeMillis()/1000;
JsonObject.put("timeStamp", timeStamp+""); String stringSignTemp = "appId="+appid+"&nonceStr=" + nonceStr + "&package=prepay_id=" + prepay_id+ "&signType=MD5&timeStamp=" + timeStamp; //再次签名
String paySign=PayUtil.sign(stringSignTemp, "&key=替换为自己的密钥", "utf-8").toUpperCase();
JsonObject.put("paySign", paySign);
jsonArray.add(JsonObject);
} return "pay";
} public String getTotal_fee() { return total_fee;
} public void setTotal_fee(String total_fee) {
this.total_fee = total_fee;
} public String getBody() { return body;
} public void setBody(String body) {
this.body = body;
} public JSONArray getJsonArray() { return jsonArray;
} public void setJsonArray(JSONArray jsonArray) {
this.jsonArray = jsonArray;
} public String getDetail() { return detail;
} public void setDetail(String detail) {
this.detail = detail;
} public String getAttach() { return attach;
} public void setAttach(String attach) {
this.attach = attach;
} public String getTime_start() { return time_start;
} public void setTime_start(String time_start) {
this.time_start = time_start;
} public String getTime_expire() { return time_expire;
} public void setTime_expire(String time_expire) {
this.time_expire = time_expire;
} public String getOpenid() { return openid;
} public void setOpenid(String openid) {
this.openid = openid;
}
} 以上是微信小程式支付介面的實例詳解的詳細內容。更多資訊請關注PHP中文網其他相關文章！
