一、網(wǎng)站微信掃碼支付開發(fā)并沒有現(xiàn)成的java示例,總結(jié)一下自己微信掃碼支付心得
二、首先去微信公眾平臺(tái)申請賬戶
三、賬戶開通、開發(fā)者認(rèn)證之后就可以進(jìn)行微信支付開發(fā)了
1、微信統(tǒng)一下單接口調(diào)用獲取預(yù)支付id，以及生成二維碼所需的codeurl
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/** * 保存訂單，并生成二維碼所需的codeurl * * @param request * @param response * @param notifyurlbuf * @param order * @return * @throws exception */ @override public map<string, string> getwechatorderinfo(string ip, cuser user, string notifyurl, order order) throws exception { map<string, string> resultmap = new hashmap<string, string>(); // 生成并保存訂單 order.setuserid(user.getid()); // 支付方式 0：銀聯(lián) 1：支付寶 2：網(wǎng)上銀行 3：微信 4：其他 order.setpaytype("3"); // 生成訂單號(hào) order.setorderno(ordernogenerator.getorderno()); // 訂單類型 1：消費(fèi) 2：退款 order.setordertype("1"); // 訂單創(chuàng)建時(shí)間 order.setcreatetime(new date()); // 訂單更新時(shí)間 order.setupdatetime(new date()); // 訂單狀態(tài) 0: 交易中 1：完成 2：已取消 order.setorderstatus("0"); // 付款狀態(tài) 0：失敗 1:成功 2、待付款 order.setpaystatus("2"); // 設(shè)置訂單失效時(shí)間 calendar calendar = calendar.getinstance(); calendar.add(calendar.hour, 2); order.setexpiretime(calendar.gettime()); integer orderid = this.balancedao.saveorder(order); map<string, string> paypreidmap = new hashmap<>(); paypreidmap = wechatutil.getpaypreid(string.valueof(orderid), "體檢報(bào)告", notifyurl, ip, string.valueof((order.getmoney().multiply(new bigdecimal(100)).intvalue())), orderid.tostring()); string prepayid = paypreidmap.get("prepay_id"); // 更新 order.setid(orderid); order.setprepayid(prepayid); order.setcodeurl(paypreidmap.get("code_url")); this.balancedao.updateorder(order); // return wechatutil.qrfromgoogle(order.getcodeurl(), 300, 0); resultmap.put("codeurl", order.getcodeurl()); resultmap.put("orderid", string.valueof(order.getid())); return resultmap; } |
此方法返回的數(shù)據(jù)如下
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<xml><return_code><![cdata[success]]></return_code><return_msg><![cdata[ok]]></return_msg><appid><![cdata[wxaf0b*****8afbf]]></appid><mch_id><![cdata[1408****02]]></mch_id><nonce_str><![cdata[zf0vgvdtvycbliwb]]></nonce_str><sign><![cdata[a2910f16086211153d747058063b3368]]></sign><result_code><![cdata[success]]></result_code><prepay_id><![cdata[wx201701191109388037e9a12310276591827]]></prepay_id><trade_type><![cdata[native]]></trade_type><code_url><![cdata[weixin://wxpay/bizpayurl?pr=1ujornx]]></code_url></xml> |
2、服務(wù)器端接受微信支付結(jié)果通知
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/** * 保存微信通知結(jié)果 * * @param request * @param response * @return * @throws exception */ @override public string savewechatnotify(string notifyinfoxml) throws exception { map<string, string> noticemap = xmlutil.doxmlparse(notifyinfoxml); // 這個(gè)其實(shí)是訂單 的id string outtradeno = noticemap.get("out_trade_no"); order order = this.balancedao.getorderbyid(integer.valueof(outtradeno)); // 如果支付通知信息不為，說明請求已經(jīng)處理過，直接返回 if (stringutil.isnotempty(order.getnotifyinfo())) { return "success"; } string sign = noticemap.get("sign"); noticemap.remove("sign"); // 驗(yàn)簽通過 if (wechatutil.getsignveryfy(noticemap, sign)) { // 通信成功此字段是通信標(biāo)識(shí)，非交易標(biāo)識(shí)，交易是否成功需要查看result_code來判斷 if ("success".equals(noticemap.get("return_code"))) { // 交易成功 if ("success".equals(noticemap.get("result_code"))) { // 商戶訂單號(hào) // 訂單更新時(shí)間 order.setupdatetime(new date()); // ------------------------------ // 處理業(yè)務(wù)開始 // ------------------------------ // 是否交易成功,1:成功0：失敗 // 微信支付成功 order.setpaystatus("1"); // 訂單狀態(tài) 0: 交易中 1：完成 2：已取消 order.setorderstatus("1"); // 保存通知信息 order.setnotifyinfo(notifyinfoxml); this.balancedao.updateorder(order); // 處理業(yè)務(wù)完畢 } else { // 錯(cuò)誤時(shí)，返回結(jié)果未簽名，記錄retcode、retmsg看失敗詳情。 logger.info("查詢驗(yàn)證簽名失敗或業(yè)務(wù)錯(cuò)誤"); logger.info("retcode:" + noticemap.get("retcode") + " retmsg:" + noticemap.get("retmsg")); } return "success"; } else { logger.info("后臺(tái)調(diào)用通信失敗"); } return "success"; } else { logger.info("通知簽名驗(yàn)證失敗"); } return null; } |
3、上面代碼用到的工具方法都在wechatutil.java工具類中
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package com.caifu.tencent.common;import java.io.ioexception;import java.net.urisyntaxexception;import java.net.urlencoder;import java.util.arraylist;import java.util.collections;import java.util.hashmap;import java.util.linkedlist;import java.util.list;import java.util.map;import java.util.random;import org.apache.commons.httpclient.httpstatus;import org.apache.http.namevaluepair;import org.apache.http.client.config.requestconfig;import org.apache.http.client.methods.closeablehttpresponse;import org.apache.http.client.methods.httppost;import org.apache.http.client.utils.uribuilder;import org.apache.http.entity.stringentity;import org.apache.http.impl.client.closeablehttpclient;import org.apache.http.impl.client.httpclients;import org.apache.http.message.basicnamevaluepair;import org.apache.http.util.entityutils;import org.jdom2.jdomexception;import org.slf4j.logger;import org.slf4j.loggerfactory;import com.caifu.login.utils.xmlutil;public class wechatutil { private static logger logger = loggerfactory.getlogger(wechatutil.class); public static final string tag = "wechat.util"; private static final int timeout = 5000; public static byte[] httppost(string url, string entity) throws urisyntaxexception, ioexception { if (url == null || url.length() == 0) { logger.info(tag, "httppost, url is null"); return null; } closeablehttpclient httpclient = httpclients.createdefault(); uribuilder uribuilder = new uribuilder(url); httppost httppost = new httppost(uribuilder.build()); requestconfig requestconfig = requestconfig.custom().setsockettimeout(timeout).setconnectionrequesttimeout(timeout).setconnecttimeout(timeout).build(); httppost.setconfig(requestconfig); // 避免漢字亂碼導(dǎo)致請求失敗， httppost.setentity(new stringentity(entity, "utf-8")); closeablehttpresponse resp = null; try { resp = httpclient.execute(httppost); if (resp.getstatusline().getstatuscode() != httpstatus.sc_ok) { logger.info(tag, "httpget fail, status code = " + resp.getstatusline().getstatuscode()); return null; } return entityutils.tobytearray(resp.getentity()); } catch (exception e) { logger.info(tag, "httppost exception, e = " + e.getmessage()); e.printstacktrace(); return null; } finally { if (httpclient != null) { httpclient.close(); } if (resp != null) { resp.close(); } } } /** * 把數(shù)組所有元素排序，并按照“參數(shù)=參數(shù)值”的模式用“&”字符拼接成字符串 * * @param params * 需要排序并參與字符拼接的參數(shù)組 * @return 拼接后字符串 */ public static string createlinkstring(map<string, string> params) { list<string> keys = new arraylist<string>(params.keyset()); collections.sort(keys); string prestr = ""; for (int i = 0; i < keys.size(); i++) { string key = keys.get(i); string value = params.get(key); if (i == keys.size() - 1) {// 拼接時(shí)，不包括最后一個(gè)&字符 prestr = prestr + key + "=" + value; } else { prestr = prestr + key + "=" + value + "&"; } } return prestr; } /** * 根據(jù)反饋回來的信息，生成簽名結(jié)果 * * @param params * 通知返回來的參數(shù)數(shù)組 * @param sign * 比對的簽名結(jié)果 * @return 生成的簽名結(jié)果 */ public static boolean getsignveryfy(map<string, string> params, string sign) { // 過濾空值、sign與sign_type參數(shù) // map<string, string> sparanew = alipaycore.parafilter(params); // 獲取待簽名字符串 string presignstr = createlinkstring(params); presignstr += "&key=" + configure.getkey(); // 獲得簽名驗(yàn)證結(jié)果 string resultsign = md5.md5encode(presignstr).touppercase(); // string resultsign = md5util.md5encode(presignstr.tostring(), // "utf-8").tolowercase(); if (sign.equals(resultsign)) { return true; } else { return false; } } /** * 裝配xml,生成請求prepayid所需參數(shù) * * @param params * @return */ public static string toxml(list<namevaluepair> params) { stringbuilder sb = new stringbuilder(); sb.append("<xml>"); for (int i = 0; i < params.size(); i++) { sb.append("<" + params.get(i).getname() + ">"); sb.append(params.get(i).getvalue()); sb.append("</" + params.get(i).getname() + ">"); } sb.append("</xml>"); return sb.tostring(); } /** * 生成簽名 */ public static string genpackagesign(list<namevaluepair> params) { stringbuilder sb = new stringbuilder(); for (int i = 0; i < params.size(); i++) { sb.append(params.get(i).getname()); sb.append('='); sb.append(params.get(i).getvalue()); sb.append('&'); } sb.append("key="); sb.append(configure.getkey()); string packagesign = md5.md5encode(sb.tostring()); return packagesign; } /** * * @param goodorderno * @param body * @param noticeurl * @param ip * @param totalfee * @return */ public static string genproductargs(string goodorderno, string body, string noticeurl, string ip, string totalfee, string productid) { stringbuffer xml = new stringbuffer(); try { string noncestr = getnoncestr(); xml.append("</xml>"); list<namevaluepair> packageparams = new linkedlist<namevaluepair>(); packageparams.add(new basicnamevaluepair("appid", configure.getappid())); packageparams.add(new basicnamevaluepair("body", body)); packageparams.add(new basicnamevaluepair("mch_id", configure.getmchid())); packageparams.add(new basicnamevaluepair("nonce_str", noncestr)); packageparams.add(new basicnamevaluepair("notify_url", noticeurl)); packageparams.add(new basicnamevaluepair("out_trade_no", goodorderno)); packageparams.add(new basicnamevaluepair("product_id", productid)); packageparams.add(new basicnamevaluepair("spbill_create_ip", ip)); packageparams.add(new basicnamevaluepair("total_fee", totalfee)); packageparams.add(new basicnamevaluepair("trade_type", "native")); string sign = genpackagesign(packageparams); packageparams.add(new basicnamevaluepair("sign", sign)); string xmlstring = toxml(packageparams); return xmlstring; } catch (exception e) { logger.info("genproductargs fail, ex = " + e.getmessage()); return null; } } /** * 生成支付簽名 * * @param params * @return */ public static string genappsign(list<namevaluepair> params) { stringbuilder sb = new stringbuilder(); for (int i = 0; i < params.size(); i++) { sb.append(params.get(i).getname()); sb.append('='); sb.append(params.get(i).getvalue()); sb.append('&'); } sb.append("key="); sb.append(configure.getkey()); string appsign = md5.md5encode(sb.tostring()).touppercase(); logger.info("orion", appsign); return appsign; } /** * 生成調(diào)用微信支付所需參數(shù) * * @param prepayid * @return */ public static map<string, string> genpayreq(string prepayid) { map<string, string> resultmap = new hashmap<string, string>(); string timestamp = gettimestamp(); string noncestr = getnoncestr(); list<namevaluepair> signparams = new linkedlist<namevaluepair>(); signparams.add(new basicnamevaluepair("appid", configure.getappid())); signparams.add(new basicnamevaluepair("noncestr", noncestr)); signparams.add(new basicnamevaluepair("package", "sign=wxpay")); signparams.add(new basicnamevaluepair("partnerid", configure.getmchid())); signparams.add(new basicnamevaluepair("prepayid", prepayid)); signparams.add(new basicnamevaluepair("timestamp", timestamp)); string sign = genappsign(signparams); resultmap.put("appid", configure.getappid()); resultmap.put("noncestr", noncestr); resultmap.put("packagevalue", "sign=wxpay"); resultmap.put("partnerid", configure.getmchid()); resultmap.put("prepayid", prepayid); resultmap.put("timestamp", timestamp); resultmap.put("sign", sign); return resultmap; } /** * 微信支付生成預(yù)支付訂單 * * @throws ioexception * @throws jdomexception */ public static map<string, string> getpaypreid(string goodorderno, string body, string noticeurl, string ip, string totalfee, string productid) throws exception { string paramsxml = genproductargs(goodorderno, body, noticeurl, ip, totalfee, productid); logger.info("orion", paramsxml); byte[] buf = wechatutil.httppost(configure.unifiedorder_api, paramsxml); string contentxml = new string(buf); map<string, string> resultmap = xmlutil.doxmlparse(contentxml); return resultmap; } public static string getnoncestr() { random random = new random(); return md5.md5encode(string.valueof(random.nextint(10000))); } public static string gettimestamp() { return string.valueof(system.currenttimemillis() / 1000); } /** * 生成支付二維碼 * @param request * @param response * @param width * @param height * @param text 微信生成預(yù)定id時(shí)，返回的codeurl */ public static void getqrcode(httpservletrequest request, httpservletresponse response, integer width, integer height, string text) { if (width == null) { width = 300; } if (height == null) { height = 300; } string format = "jpg"; hashtable hints = new hashtable(); hints.put(encodehinttype.character_set, "utf-8"); bitmatrix bitmatrix; try { bitmatrix = new multiformatwriter().encode(text, barcodeformat.qr_code, width, height, hints); matrixtoimagewriter.writetostream(bitmatrix, format, response.getoutputstream()); } catch (writerexception e) { e.printstacktrace(); } catch (ioexception e) { // todo auto-generated catch block e.printstacktrace(); } }} |
生成二維碼需要兩jar
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<!-- google zxing 二維碼jar begin --> <dependency> <groupid>com.google.zxing</groupid> <artifactid>core</artifactid> <version>3.3.0</version> </dependency> <dependency> <groupid>com.google.zxing</groupid> <artifactid>javase</artifactid> <version>3.3.0</version> </dependency><!-- google zxing 二維碼jar begin --> |
4、下面是用到的配置類
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package com.caifu.tencent.common;/** * user: rizenguo * date: 2014/10/29 * time: 14:40 * 這里放置各種配置數(shù)據(jù) */public class configure {//這個(gè)就是自己要保管好的私有key了（切記只能放在自己的后臺(tái)代碼里，不能放在任何可能被看到源代碼的客戶端程序中） // 每次自己post數(shù)據(jù)給api的時(shí)候都要用這個(gè)key來對所有字段進(jìn)行簽名，生成的簽名會(huì)放在sign這個(gè)字段，api收到post數(shù)據(jù)的時(shí)候也會(huì)用同樣的簽名算法對post過來的數(shù)據(jù)進(jìn)行簽名和驗(yàn)證 // 收到api的返回的時(shí)候也要用這個(gè)key來對返回的數(shù)據(jù)算下簽名，跟api的sign數(shù)據(jù)進(jìn)行比較，如果值不一致，有可能數(shù)據(jù)被第三方給篡改 private static string key = "a6gb0dy4dsfdssupcpsdfdshkscdqcr3exs"; private static string appsecret="7584sdfdsfe4f26fadsfsdfs56f10728a"; //微信分配的公眾號(hào)id（開通公眾號(hào)之后可以獲取到） private static string appid = "wxaf0b86sdfsdf8afbf"; //微信支付分配的商戶號(hào)id（開通公眾號(hào)的微信支付功能之后可以獲取到） private static string mchid = "14012313702"; //受理模式下給子商戶分配的子商戶號(hào) private static string submchid = ""; //https證書的本地路徑 private static string certlocalpath = ""; //https證書密碼，默認(rèn)密碼等于商戶號(hào)mchid private static string certpassword = ""; //是否使用異步線程的方式來上報(bào)api測速，默認(rèn)為異步模式 private static boolean usethreadtodoreport = true; //機(jī)器ip private static string ip = ""; //以下是幾個(gè)api的路徑： //1）被掃支付api public static string unifiedorder_api = "https://api.mch.weixin.qq.com/pay/unifiedorder"; public static string pay_api = "https://api.mch.weixin.qq.com/pay/micropay"; //2）被掃支付查詢api public static string pay_query_api = "https://api.mch.weixin.qq.d/pay/orderquery"; //3）退款api public static string refund_api = "https://api.mch.weixin.qq.com/secapi/pay/refund"; //4）退款查詢api public static string refund_query_api = "https://api.mch.weixin.qq.com/pay/refundquery"; //5）撤銷api public static string reverse_api = "https://api.mch.weixin.qq.com/secapi/pay/reverse"; //6）下載對賬單api public static string download_bill_api = "https://api.mch.weixin.qq.com/pay/downloadbill"; //7) 統(tǒng)計(jì)上報(bào)api public static string report_api = "https://api.mch.weixin.qq.com/payitil/report"; public static boolean isusethreadtodoreport() { return usethreadtodoreport; } public static void setusethreadtodoreport(boolean usethreadtodoreport) { configure.usethreadtodoreport = usethreadtodoreport; } public static string httpsrequestclassname = "com.tencent.common.httpsrequest"; public static void setkey(string key) { configure.key = key; } public static void setappid(string appid) { configure.appid = appid; } public static void setmchid(string mchid) { configure.mchid = mchid; } public static void setsubmchid(string submchid) { configure.submchid = submchid; } public static void setcertlocalpath(string certlocalpath) { configure.certlocalpath = certlocalpath; } public static void setcertpassword(string certpassword) { configure.certpassword = certpassword; } public static void setip(string ip) { configure.ip = ip; } public static string getkey(){ return key; } public static string getappid(){ return appid; } public static string getmchid(){ return mchid; } public static string getsubmchid(){ return submchid; } public static string getcertlocalpath(){ return certlocalpath; } public static string getcertpassword(){ return certpassword; } public static string getip(){ return ip; } public static void sethttpsrequestclassname(string name){ httpsrequestclassname = name; }} |
在這里需要注意的配置
private static string key = “a6gb0dy4dsfdssupcpsdfdshkscdqcr3exs”;
這里的key 是登陸 https://pay.weixin.qq.com/index.php/core/info (微信商戶平臺(tái))設(shè)置的api_key
5、xml 解析工具類
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package com.caifu.login.utils;import java.io.bytearrayinputstream;import java.io.ioexception;import java.io.inputstream;import java.util.hashmap;import java.util.iterator;import java.util.list;import java.util.map;import javax.servlet.http.httpservletrequest;import org.dom4j.io.saxreader;import org.jdom2.document;import org.jdom2.element;import org.jdom2.jdomexception;import org.jdom2.input.saxbuilder;/** * xml工具類 * * @author miklchen * */public class xmlutil { /** * 解析xml,返回第一級(jí)元素鍵值對。如果第一級(jí)元素有子節(jié)點(diǎn)，則此節(jié)點(diǎn)的值是子節(jié)點(diǎn)的xml數(shù)據(jù)。 * * @param strxml * @return * @throws jdomexception * @throws ioexception */ public static map doxmlparse(string strxml) throws jdomexception, ioexception { strxml = strxml.replacefirst("encoding=\".*\"", "encoding=\"utf-8\""); if (null == strxml || "".equals(strxml)) { return null; } map m = new hashmap(); inputstream in = new bytearrayinputstream(strxml.getbytes("utf-8")); saxbuilder builder = new saxbuilder(); document doc = builder.build(in); element root = doc.getrootelement(); list list = root.getchildren(); iterator it = list.iterator(); while (it.hasnext()) { element e = (element) it.next(); string k = e.getname(); string v = ""; list children = e.getchildren(); if (children.isempty()) { v = e.gettextnormalize(); } else { v = xmlutil.getchildrentext(children); } m.put(k, v); } // 關(guān)閉流 in.close(); return m; } /** * 獲取子結(jié)點(diǎn)的xml * * @param children * @return string */ public static string getchildrentext(list children) { stringbuffer sb = new stringbuffer(); if (!children.isempty()) { iterator it = children.iterator(); while (it.hasnext()) { element e = (element) it.next(); string name = e.getname(); string value = e.gettextnormalize(); list list = e.getchildren(); sb.append("<" + name + ">"); if (!list.isempty()) { sb.append(xmlutil.getchildrentext(list)); } sb.append(value); sb.append("</" + name + ">"); } } return sb.tostring(); } /** * 將requestxml通知結(jié)果轉(zhuǎn)出啊成map * @param request * @return * @throws exception */ public static map<string, string> parsexml(httpservletrequest request) throws exception { // 解析結(jié)果存儲(chǔ)在hashmap map<string, string> map = new hashmap<string, string>(); inputstream inputstream = request.getinputstream(); // 讀取輸入流 saxreader reader = new saxreader(); org.dom4j.document document = reader.read(inputstream); // 得到xml根元素 org.dom4j.element root = document.getrootelement(); // 得到根元素的所有子節(jié)點(diǎn) list<org.dom4j.element> elementlist = root.elements(); // 遍歷所有子節(jié)點(diǎn) for (org.dom4j.element e : elementlist) map.put(e.getname(), e.gettext()); // 釋放資源 inputstream.close(); inputstream = null; return map; }} |
6、整個(gè)后臺(tái)服務(wù)已經(jīng)完成，最后關(guān)閉頁面微信支付二維碼，告知用戶支付已經(jīng)完成了
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var f; /* 定時(shí)任務(wù)方法，異步請求去查詢訂單是否支付*/ function getorder() { var orderid = $('#orderid').val(); if (orderid != '') { $.ajax({ url : "${base}/balance/auth/ispay?orderid=" + orderid, type : "get", async : false, success : function(d) { if (d == "1") { //當(dāng)獲取到微信支付結(jié)果時(shí)，關(guān)閉二維碼div $(".weixinpay").css("display", "none"); $("#zhichutankuang").css("display", "block"); ////當(dāng)獲取到微信支付結(jié)果時(shí)，關(guān)閉定時(shí)任務(wù) clearinterval(f); // layer.alert('付款成功', { // skin : 'layui-layer-molv', // 樣式類名 // closebtn : 0 // }, function() { // location.href = "${base}/balance/auth/presentation?tjno=" + $("#tjno").val(); // }); } } }); } } //異步請求獲取生成二維碼的url $(".paylast").click(function() { var $paytype = $('input:radio:checked').val(); var $money = $("#money").val(); var $tjreporttype = $("#tjreporttype").val(); var $tjno = $("#tjno").val(); $.ajax({ url : "${base}/balance/auth/wechatinfo", type : "post", async : false, data : { paytype : $paytype, money : $money, tjno : $tjno, tjreporttype : $tjreporttype }, success : function(d) { if (d.resultcode == "1000") { //當(dāng)請求成功時(shí)，設(shè)置二維碼圖片地址 $("#codeimg").attr('src', d.obj); $("#orderid").val(d.attributes.orderid); ////當(dāng)請求成功時(shí)，啟動(dòng)定時(shí)任務(wù),每隔3秒去后臺(tái)查詢一次訂單是否成功 f = setinterval(getorder, 3000); // getorder(true); } } }); $(".selpaycon").css("display", "none"); $(".weixinpay").css("display", "block"); }); |
以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持服務(wù)器之家。
原文鏈接：https://blog.csdn.net/liehuzunzhe/article/details/54615136
