已上傳至github庫 https://github.com/gaoruiqiang2017/weixinpay.git
開發公衆號支付時,在統一下單接口中要求必傳用戶openid,而獲取openid則需要在公衆平臺設置獲取openid的域名,只有被設置過的域名纔是一個有效的獲取openid的域名,否則將獲取失敗,這也是不好測試的原因
後臺接口
@RestController
@RequestMapping("/weixinGZHpay")
public class WeixinGZHpay {
@Value("${appid}")
private String appid; //公衆賬號id
@Value("${mchid}")
private String mchId; //商戶號
@Value("${weixinKey}")
private String weixinKey; //密匙
@Value("${weixinAppSecret}")
private String weixinAppSecret; // 公衆號的appsecret
@Value("https://api.mch.weixin.qq.com/pay/unifiedorder")
private String unifiedorderUrl; //統一下單接口
@Value("weixin.oauth2.url=https://open.weixin.qq.com/connect/oauth2/authorize")
private String weixinOauth2Url; //網頁授權獲取code
@Value("weixin.oauth2.access_token_url=https://api.weixin.qq.com/sns/oauth2/access_token")
private String accessTokenUrl; //通過code獲取access_token_url和openid
@Value("https://127.0.0.1:8080/weixinGZHpay/gzhPay")
private String redirectUrl; //授權後重定向的回調鏈接地址, 請使用 urlEncode 對鏈接進行處理
/**
* //第一步:用戶同意授權,獲取code
* 參考:https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421140842
* 如果用戶同意授權,頁面將跳轉至 redirect_uri/?code=CODE&state=STATE。
*
* @param httpServletRequest
* @param httpServletResponse
* @param orderId 訂單id,先生成自己業務的訂單
*/
public void getCode(HttpServletRequest httpServletRequest, HttpServletResponse
httpServletResponse, String orderId) {
try {
StringBuffer sb = new StringBuffer();
sb.append(weixinOauth2Url).append("?").append
("appid=").append(appid).append("&redirect_uri=").append
(URLEncoder.encode(redirectUrl, "UTF-8"));
sb.append("&response_type=code&scope=snsapi_base&state=").append(orderId).append
("#wechat_redirect"); //我使用靜默授權
StringBuilder sbHtml = new StringBuilder();
sbHtml.append("<form id=\"weixinggongzhonghao\" name=\"weixinggongzhonghao\" " +
"action=\"" + sb.toString()
+ "\" method=\"" + "post" + "\">");
sbHtml.append("<input type=\"submit\" value=\"" + "payButton" + "\" " +
"style=\"display:none;\"></form>");
sbHtml.append("<script>document.forms['weixinggongzhonghao'].submit();</script>");
// 直接將完整的表單html輸出到頁面
httpServletResponse.setContentType("text/html;charset=utf-8");
httpServletResponse.getWriter().write(sbHtml.toString());
httpServletResponse.getWriter().flush();
} catch (Exception e) {
}
}
/**
* 第二步:通過code換取網頁授權access_token和用戶openid,並下單獲取調起支付的參數,進入下單頁調起微信支付
*
* @param httpServletRequest
* @param httpServletResponse
* @param state 從第一步獲取,實際爲訂單id,通過訂單id獲取商品信息
*/
@RequestMapping("/gzhPay")
public String gzhPay(HttpServletRequest httpServletRequest, HttpServletResponse
httpServletResponse, String code, String state, Writer writer, Model model)
throws Exception {
String mapStr = "";
try {
// // 換區微信access_token和用戶openid
StringBuffer sb = new StringBuffer();
sb.append(accessTokenUrl).append("?appid=").append(appid);
sb.append("&secret=").append(weixinAppSecret);
sb.append("&code=").append(code);
sb.append("&grant_type=authorization_code");
String result = HttpUtil.doPost(accessTokenUrl, sb.toString());
JSONObject json = JSONObject.parseObject(result);
String openid = json.getString("openid");
//獲得openid調用微信統一下單接口
HashMap<String, String> dataMap = new HashMap<>();
dataMap.put("appid", appid); //公衆賬號ID
dataMap.put("mch_id", mchId); //商戶號
dataMap.put("nonce_str", WXPayUtil.generateNonceStr()); //隨機字符串,長度要求在32位以內。
dataMap.put("body", "手機"); //商品描述,通過訂單id獲得
dataMap.put("out_trade_no", state); //商品訂單號
dataMap.put("total_fee", "1"); //商品金,通過訂單id獲得
dataMap.put("spbill_create_ip", HttpUtil.getIpAddress(httpServletRequest)); //客戶端ip
dataMap.put("notify_url", "https://127.0.0.1:8080/weixinGZHpay/notifyUrl"); //通知地址
// (需要是外網可以訪問的)
dataMap.put("trade_type", "JSAPI"); //交易類型
dataMap.put("openid", openid); //商戶號
//生成簽名
String signature = WXPayUtil.generateSignature(dataMap, weixinKey);
dataMap.put("sign", signature);//簽名
//將類型爲map的參數轉換爲xml
String requestXml = WXPayUtil.mapToXml(dataMap);
//發送參數,調用微信統一下單接口,返回xml
String responseXml = HttpUtil.doPost(unifiedorderUrl, requestXml);
System.out.print(responseXml);
Map<String, String> map = WXPayUtil.xmlToMap(responseXml);
if ("FAIL".equals(map.get("return_code"))) {
mapStr = map.get("return_msg");
writer.write(mapStr);
return "";
}
if ("FAIL".equals(map.get("result_code"))) {
mapStr = map.get("err_code_des");
writer.write(mapStr);
return "";
}
if ("".equals(map.get("prepay_id")) || map.get("prepay_id") == null) {
writer.write("prepay_id 爲空");
return "";
}
//成功之後,提取prepay_id,重點就是這個
HashMap<String, String> params = new HashMap<>();
params.put("appId", appid);
params.put("nonceStr", WXPayUtil.generateNonceStr());
params.put("package", map.get("prepay_id"));
params.put("signType", "MD5");
params.put("timeStamp", String.valueOf(System.currentTimeMillis() / 1000));
//重新簽名
String paySign = WXPayUtil.generateSignature(params, weixinKey);
params.put("paySign", paySign);
//傳給前端頁面
//在微信瀏覽器裏面打開H5網頁中執行JS調起支付。接口輸入輸出數據格式爲JSON。
model.addAttribute("param", JSON.toJSON(params));
return "weixinpay/weixinGZHpay";
//JS API的返回結果get_brand_wcpay_request爲ok及表示用戶成功完成支付,展示支付成功頁
// 下一步就是在後臺回調接口處理訂單狀態
} catch (Exception e) {
return "異常";
}
}
/**
* 異步回調(必須有,得發佈到外網)
*
* @param unifiedorderUrl
* @param requestXml
* @return
*/
@RequestMapping("/notifyUrl")
public String notifyUrl(String unifiedorderUrl, String requestXml) {
System.out.print("進入支付h5回調=====================");
//如果沒有加redirectUrl,就這這個接口處理訂單信息
//判斷接受到的result_code是不是SUCCESS,如果是,則返回成功,具體業務具體分析
// 通知微信.異步確認成功.必寫.不然會一直通知後臺.八次之後就認爲交易失敗了
String resXml = "<xml>" + "<return_code><![CDATA[SUCCESS]]></return_code>" +
"<return_msg><![CDATA[OK]]></return_msg>" + "</xml> ";
return resXml; //或者 return "success";
}
}
pom
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.weixinpay</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--微信支付SDK-->
<dependency>
<groupId>com.github.wxpay</groupId>
<artifactId>wxpay-sdk</artifactId>
<version>0.0.3</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.5</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.47</version>
</dependency>
<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>3.0.0</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.6</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
<finalName>demo</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>**/*.properties</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<filtering>false</filtering>
<includes>
<include>**</include>
</includes>
</resource>
</resources>
</build>
</project>
util
/**
* @Description
* @Date:03
*/
public class HttpUtil {
public static String doPost(String url, String requestXml) {
CloseableHttpClient httpClient = null;
CloseableHttpResponse httpResponse = null;
//創建httpClient連接對象
httpClient = HttpClients.createDefault();
//創建post請求連接對象
HttpPost httpPost = new HttpPost(url);
//創建連接請求對象,並設置連接參數
RequestConfig requestConfig = RequestConfig.custom()
.setConnectTimeout(15000) //連接服務區主機超時時間
.setConnectionRequestTimeout(60000) //連接請求超時時間
.setSocketTimeout(60000).build(); //設置讀取響應數據超時時間
//爲httppost請求設置參數
httpPost.setConfig(requestConfig);
//將上傳參數放到entity屬性中
httpPost.setEntity(new StringEntity(requestXml, "UTF-8"));
//添加頭信息
httpPost.addHeader("Content-type", "text/xml");
String result = "";
try {
//發送請求
httpResponse = httpClient.execute(httpPost);
//從相應對象中獲取返回內容
HttpEntity entity = httpResponse.getEntity();
result = EntityUtils.toString(entity, "UTF-8");
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
/**
* 獲取IP地址
*
* @param request
* @return
*/
public static String getIpAddress(HttpServletRequest request) {
String ip = request.getHeader("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_CLIENT_IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip;
}
}
properties
appid=wx12822223?22sss
mchId=149232323312333sss
weixinKey=34234234er2werwerwer
unifiedorderUrl=https://api.mch.weixin.qq.com/pay/unifiedorder