官网文档和demo代码下载地址
https://mp.weixin.qq.com/htmledition/res/bussiness-faq/wx_app_pay.zip
1. 基础常量代码
package com.xiaoshuai.util;
/**
* 配置类
* @author 小帅帅
* @date 2016-7-5下午01:40:53
*/
public class ConfigUtil {
/**
* 服务号相关信息
*/
public final static String APPID = "";//服务号的应用号
public final static String APP_SECRECT = "";//服务号的应用密码
public final static String TOKEN = "weixinCourse";//服务号的配置token
public final static String MCH_ID = "";//商户号
public final static String API_KEY = "";//API密钥
public final static String SIGN_TYPE = "MD5";//签名加密方式
public final static String CERT_PATH = "";//微信支付证书存放路径地址
//微信支付统一接口的回调action
public final static String NOTIFY_URL = "";
//微信支付成功支付后跳转的地址
public final static String SUCCESS_URL = "http://www.xiaoshuaishuai.com";
//oauth2授权时回调action
public final static String REDIRECT_URI = "";
/**
* 微信基础接口地址
*/
//获取token接口(GET)
public final static String TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";
//oauth2授权接口(GET)
public final static String OAUTH2_URL = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code";
//刷新access_token接口(GET)
public final static String REFRESH_TOKEN_URL = "https://api.weixin.qq.com/sns/oauth2/refresh_token?appid=APPID&grant_type=refresh_token&refresh_token=REFRESH_TOKEN";
/**
* 微信支付接口地址
*/
//微信支付统一接口(POST)
public final static String UNIFIED_ORDER_URL = "https://api.mch.weixin.qq.com/pay/unifiedorder";
//微信退款接口(POST)
public final static String REFUND_URL = "https://api.mch.weixin.qq.com/secapi/pay/refund";
//订单查询接口(POST)
public final static String CHECK_ORDER_URL = "https://api.mch.weixin.qq.com/pay/orderquery";
//关闭订单接口(POST)
public final static String CLOSE_ORDER_URL = "https://api.mch.weixin.qq.com/pay/closeorder";
//退款查询接口(POST)
public final static String CHECK_REFUND_URL = "https://api.mch.weixin.qq.com/pay/refundquery";
//对账单接口(POST)
public final static String DOWNLOAD_BILL_URL = "https://api.mch.weixin.qq.com/pay/downloadbill";
//短链接转换接口(POST)
public final static String SHORT_URL = "https://api.mch.weixin.qq.com/tools/shorturl";
//接口调用上报接口(POST)
public final static String REPORT_URL = "https://api.mch.weixin.qq.com/payitil/report";
}
2. 支付工具类代码
package com.xiaoshuai.util;
import java.util.Date;
import java.util.Iterator;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.alibaba.fastjson.*;
/**
* 支付类
* @author 小帅帅
* @date 2016-7-5下午01:41:54
*/
public class PayCommonUtil {
@SuppressWarnings("unused")
private static Logger log = LoggerFactory.getLogger(PayCommonUtil.class);
public static String CreateNoncestr(int length) {
String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
String res = "";
for (int i = 0; i < length; i++) {
Random rd = new Random();
res += chars.indexOf(rd.nextInt(chars.length() - 1));
}
return res;
}
public static String CreateNoncestr() {
String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
String res = "";
for (int i = 0; i < 16; i++) {
Random rd = new Random();
res += chars.charAt(rd.nextInt(chars.length() - 1));
}
return res;
}
/**
* @author 小帅帅
* @date 2016-7-5下午01:41:54
* @Description:sign签名
* @param characterEncoding 编码格式
* @param parameters 请求参数
* @return
*/
@SuppressWarnings("unchecked")
public static String createSign(String characterEncoding,SortedMap<Object,Object> parameters){
StringBuffer sb = new StringBuffer();
Set es = parameters.entrySet();
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=" + ConfigUtil.API_KEY);
String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toUpperCase();
return sign;
}
/**
* @author 小帅帅
* @date 2016-7-5下午01:41:54
* @Description:将请求参数转换为xml格式的string
* @param parameters 请求参数
* @return
*/
@SuppressWarnings("unchecked")
public static String getRequestXml(SortedMap<Object,Object> parameters){
StringBuffer sb = new StringBuffer();
sb.append("<xml>");
Set es = parameters.entrySet();
Iterator it = es.iterator();
while(it.hasNext()) {
Map.Entry entry = (Map.Entry)it.next();
String k = (String)entry.getKey();
String v = (String)entry.getValue();
if ("attach".equalsIgnoreCase(k)||"body".equalsIgnoreCase(k)||"sign".equalsIgnoreCase(k)) {
sb.append("<"+k+">"+"<![CDATA["+v+"]]></"+k+">");
}else {
sb.append("<"+k+">"+v+"</"+k+">");
}
}
sb.append("</xml>");
return sb.toString();
}
/**
* @author 小帅帅
* @date 2016-7-5下午01:41:54
* @Description:返回给微信的参数
* @param return_code 返回编码
* @param return_msg 返回信息
* @return
*/
public static String setXML(String return_code, String return_msg) {
return "<xml><return_code><![CDATA[" + return_code
+ "]]></return_code><return_msg><![CDATA[" + return_msg
+ "]]></return_msg></xml>";
}
/**
*
* getPrepayId(调用微信统一下单接口,生成微信预支付id)
* @param totalFee 支付金额
* @param ipAddress ip地址
* @param orderNumber 订单号
* @param body 商品或支付单简要描述
* @param openid trade_type=JSAPI,此参数必传,用户在商户appid下的唯一标识
* @return
* @throws Exception
* @throws
* @author 小帅帅
* @date 2016-7-5下午01:41:54
*/
@SuppressWarnings("unchecked")
public static Map<String, String> getPrepayId(String totalFee,String ipAddress,String orderNumber,String body,String openid) throws Exception{
SortedMap<Object,Object> parameters = new TreeMap<Object,Object>();
parameters.put("appid", ConfigUtil.APPID);
parameters.put("mch_id", ConfigUtil.MCH_ID);
parameters.put("nonce_str", CreateNoncestr());
parameters.put("body", body);
parameters.put("out_trade_no", orderNumber);
parameters.put("total_fee", totalFee);
parameters.put("spbill_create_ip",ipAddress);
parameters.put("notify_url", ConfigUtil.NOTIFY_URL);
parameters.put("trade_type", "JSAPI");
parameters.put("openid", openid);
String sign = PayCommonUtil.createSign("UTF-8", parameters);
parameters.put("sign", sign);
String requestXML = PayCommonUtil.getRequestXml(parameters);
String result =CommonUtil.httpsRequest(ConfigUtil.UNIFIED_ORDER_URL, "POST", requestXML);
Map<String, String> map = XMLUtil.doXMLParse(result);//解析微信返回的信息,以Map形式存储便于取值
return map;
}
/**
*
* queryWeiXinOrder(微信订单查询)
* @param orderNumber 订单号
* @return 当返回 return_code="SUCCESS"
* 和result_code="SUCCESS" 时 获取交易状态SUCCESS—支付成功
REFUND—转入退款
NOTPAY—未支付
CLOSED—已关闭
REVOKED—已撤销(刷卡支付)
USERPAYING--用户支付中
PAYERROR--支付失败(其他原因,如银行返回失败)
* @throws Exception
* @throws
* @author 小帅帅
* @date 2016-7-5下午01:41:54
*/
@SuppressWarnings("unchecked")
public static Map<String, String> queryWeiXinOrder(String orderNumber) throws Exception{
SortedMap<Object,Object> parameters = new TreeMap<Object,Object>();
parameters.put("appid", ConfigUtil.APPID);
parameters.put("mch_id", ConfigUtil.MCH_ID);
parameters.put("nonce_str", CreateNoncestr());
parameters.put("out_trade_no", orderNumber);
String sign = PayCommonUtil.createSign("UTF-8", parameters);
parameters.put("sign", sign);
String requestXML = PayCommonUtil.getRequestXml(parameters);
String result =CommonUtil.httpsRequest(ConfigUtil.CHECK_ORDER_URL, "POST", requestXML);
Map<String, String> map = XMLUtil.doXMLParse(result);//解析微信返回的信息,以Map形式存储便于取值
return map;
}
/**
*
* createPackageValue(调起支付)
* @param appid
* @param appKey
* @param prepay_id
* @return
* @throws
* @author 小帅帅
* @date 2016-7-5下午01:41:54
*/
public static String createPackageValue(String prepay_id) {
SortedMap<Object,Object> params = new TreeMap<Object,Object>();
params.put("appId", ConfigUtil.APPID);
params.put("timeStamp", Long.toString(new Date().getTime()));
params.put("nonceStr", PayCommonUtil.CreateNoncestr());
params.put("package", "prepay_id="+prepay_id);
params.put("signType", ConfigUtil.SIGN_TYPE);
String paySign = PayCommonUtil.createSign("UTF-8", params);
params.put("packageValue", "prepay_id="+prepay_id); //这里用packageValue是预防package是关键字在js获取值出错
params.put("paySign", paySign); //paySign的生成规则和Sign的生成规则一致
params.put("sendUrl", ConfigUtil.SUCCESS_URL); //付款成功后跳转的页面
String json = JSONObject.toJSONString(params);
return json;
}
}
3. 请求业务代码
package com.xiaoshuai.controller;
import java.io.IOException;
import java.io.PrintWriter;
import java.math.BigDecimal;
import java.util.Map;
import java.util.Random;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.jdom.JDOMException;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.xiaoshuai.util.CommonUtil;
import com.xiaoshuai.util.PayCommonUtil;
/**
* 支付请求Controller
* @author 小帅帅
* @date 2016-7-5下午02:08:47
*/
@Controller
@RequestMapping(value="pay")
public class WeiXinPayController {
/**
*
* index(支付首页)
* @return
*/
@RequestMapping(value="index")
public String index(){
return "pay";
}
/**
*
* payOrder(调起微信支付)
* @param request
* @param totalFee //支付金额
* @param body //支付描述
* @return
* @throws Exception
*/
@RequestMapping(value="payOrder")
@ResponseBody
public String payOrder(HttpServletRequest request,double totalFee,String body) throws Exception{
String resultString=null;
BigDecimal fee = new BigDecimal(totalFee); // 微信支付参数以分为单位。
fee = fee.multiply(new BigDecimal(100));
String payFee=fee.longValue()+"";
//1 生成预支付id
String ipAddress=request.getRemoteAddr();
String orderNumber=System.currentTimeMillis()+new Random().nextInt(100)+"";
String openid="o2VKNju8JqCeGVoEWJ1S8Ue_up8E"; //调用网页授权接口获取
try {
Map<String, String> map=PayCommonUtil.getPrepayId(payFee, ipAddress, orderNumber, body, openid);
String prepay_id=map.get("prepay_id");
//2 给H5页面传递参数 调起微信支付
resultString=PayCommonUtil.createPackageValue(prepay_id);
} catch (JDOMException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return resultString;
}
/**
*
* updateOrderState(异步回调通知)
*
* @param request
*/
@RequestMapping(value="noticePay")
public void updateOrderState(HttpServletRequest request,HttpServletResponse response) {
try {
PrintWriter out= response.getWriter();
// xml请求解析
Map<String, Object> requestMap = CommonUtil.parseXml(request);
String orderNumber = (String) requestMap.get("out_trade_no");
if (orderNumber != null) {
// 调用微信查询订单接口,
Map<String, String> orderMap = PayCommonUtil.queryWeiXinOrder(orderNumber);
if (orderMap.get("return_code") != null&& orderMap.get("return_code").equalsIgnoreCase("SUCCESS")) {
if (orderMap.get("result_code") != null&& orderMap.get("result_code").equalsIgnoreCase("SUCCESS")) {
if (orderMap.get("trade_state") != null&& orderMap.get("trade_state").equalsIgnoreCase("SUCCESS")) {
// 支付成功。。。。开始更新你的订单状态吧 根据自己的业务去修改
String resultXml="<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>";
out.println(resultXml);
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
4. 项目结构。只是简单的基础代码
5.pay.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport"
content="initial-scale=1, maximum-scale=3, minimum-scale=1, user-scalable=no">
<title>微信支付</title>
</head>
<body>
<div style="text-align: center; padding: 10px 10px 10px 10px">
<span
style="color: red; font-size: 20px; font-weight: bold; display: none">请在微信浏览器中打开</span>
</div>
支付金额:
<input type="text" id="totalFee" style="width: 80%; height: 30px;" />
<br>
<br>
支付描述:
<input type="text" id="body" style="width: 80%; height: 30px;" />
<br>
<br>
<input type="button" value="确定" id="pay"
style="width: 150px; height: 80px;">
<script src="<%=basePath%>resources/js/jquery.min.js"
type="text/javascript"></script>
<script type="text/javascript">
var basePath = "<%=basePath%>";
$(function(){
$("#pay").click(payOrder);
if(!isWeiXin()){
$("span").show();
alert("请在微信浏览器中打开");
}else{
$("span").hide();
}
})
function isWeiXin(){
var ua = window.navigator.userAgent.toLowerCase();
if(ua.match(/MicroMessenger/i) == 'micromessenger'){
return true;
}else{
return false;
}
}
function payOrder(){
if(!isWeiXin()){
alert("请在微信浏览器中打开")
$("span").show();
return;
}else{
$("span").hide();
}
var totalFee=$("#totalFee").val();
var body=$("#body").val();
$.ajax({
type: "post",
url:basePath+"pay/payOrder" ,
data: {'totalFee':totalFee, 'body':body},
dataType: "json",
success: function(data){
WeixinJSBridge.invoke('getBrandWCPayRequest',{
"appId" : data.appId, //公众号名称,由商户传入
"timeStamp":data.timeStamp, //时间戳,自 1970 年以来的秒数
"nonceStr" : data.nonceStr, //随机串
"package" : data.packageValue, //<span style="font-family:微软雅黑;">商品包信息</span>
"signType" : data.signType, //微信签名方式:
"paySign" : data.paySign //微信签名
},function(res){
if(res.err_msg == "get_brand_wcpay_request:ok" ) {
window.location.href=data.sendUrl;
}else{
alert("fail");
// window.location.href="http://183.45.18.197:8016/wxweb/config/oauth!execute.action";
}
});
}
});
}
</script>
</body>
</html>