@ 微信打包APP，支付接口后台包这个错误，openId和appID不匹配
#之前一直做 H5 小程序方面 今天做App 简直闹心死了
微信app支付与小程序支付有所差别（切记不要传openid）上代码
* 微信APP支付接口
* 重点***** trade_type 一定要改成 APP，小程序是 JSAP ****
* @param spbill_create_ip 本机IP
* @param openId openid 从小程序复制过来的 实际app中没用
* @param orderNumber
* @param price
* @return
*/
public Map wxPay(String spbill_create_ip, String openId, String orderNumber,String price) {
Map<String, Object> payMap = new HashMap<String, Object>();//返回给小程序端需要的参数
try {
//生成的随机字符串
String nonce_str = generateNonceStr();
//项目名称 随便写 比如某某购物商城
String body = "";
//int price = 100;//weixin.getAdjustPrice().multiply(￥).intValue();
//组装参数，用户生成统一下单接口的签名
logger.info("----------下单接口签名-------");
Map<String, String> packageParams = new HashMap<>();
packageParams.put("appid", WechatConfig.appid);
packageParams.put("mch_id", WechatConfig.mch_id);
packageParams.put("nonce_str", nonce_str);
packageParams.put("body", body);
packageParams.put("out_trade_no",orderNumber);
packageParams.put("total_fee", price+"" );
packageParams.put("spbill_create_ip", spbill_create_ip);
packageParams.put("notify_url",WechatConfig.notify_url);
packageParams.put("trade_type", WechatConfig.TRADETYPE);
按照“参数=参数值”的模式用“&”字符 拼接成字符串
String prestr = PayUtil.createLinkString(packageParams);
MD5运算生成签名，这里是第一次签名，用于调用统一下单接口
String sign = PayUtil.sign(prestr, WechatConfig.PAY_SECRET, "utf-8").toUpperCase();
String xml = "<xml version='1.0' encoding='gbk'>"
+ "<appid>" + WechatConfig.appid + "</appid>"
+ "<body><![CDATA[" + body + "]]></body>"
+ "<mch_id>" + WechatConfig.mch_id + "</mch_id>"
+ "<nonce_str>" + nonce_str + "</nonce_str>"
+ "<notify_url>" +WechatConfig.notify_url + "</notify_url>"
+ "<out_trade_no>" + orderNumber + "</out_trade_no>"
+ "<spbill_create_ip>" + spbill_create_ip + "</spbill_create_ip>"
+ "<total_fee>" + price + "</total_fee>"
+ "<trade_type>" + WechatConfig.TRADETYPE + "</trade_type>"
+ "<sign>" + sign + "</sign>"
+ "</xml>";
//调用统一下单接口，并接收返回的结果
String result = PayUtil.httpRequest(WechatConfig.pay_url, "POST", xml);
logger.info("----------result:" + result);
System.out.println("支付接口返回报文"+result);
// 将解析结果存储在Map中
Map map = PayUtil.doXMLParse(result);
// 获取返回参数
String return_code = (String) map.get("return_code");//返回状态码
String result_code = (String) map.get("result_code");//返回状态码
String nonce_strs = (String) map.get("nonce_str");
if (return_code.equals("SUCCESS") || return_code.equals(result_code)) {
String prepay_id = (String) map.get("prepay_id");//返回的预付单信息
payMap.put("nonceStr", nonce_str);
payMap.put("prepay_id",prepay_id);
payMap.put("partnerid",WechatConfig.mch_id);
payMap.put("package", "Sign=WXPay");
Long timeStamp = System.currentTimeMillis() / 1000;
payMap.put("timeStamp", timeStamp + "");
拼接二次签名需要的参数，参数名一定要小写
String stringSignTemp = "appid=" + WechatConfig.appid +
"&partnerid="+WechatConfig.mch_id +
"&prepayid=" + prepay_id +
"&noncestr=" + nonce_strs +
"×tamp=" + timeStamp +
"&package=Sign=WXPay" ;
String paySign = PayUtil.sign(stringSignTemp, WechatConfig.PAY_SECRET, "utf-8").toUpperCase();
System.out.println(paySign.length());
System.out.println("=======================第二次签名："+ paySign + "============ ======");
payMap.put("paySign", paySign.substring(0,30));
payMap.put("status",1);
} else {
logger.info("----------统一下单失败-------");
payMap.put("status",0);
payMap.put("message","统一下单失败");
return payMap;
}
payMap.put("appid", WechatConfig.appid);
} catch (Exception e) {
e.printStackTrace();
}
return payMap;
}
附加方法
一、获取随机字符串
public static String generateNonceStr() {
char[] nonceChars = new char[32];
for (int index = 0; index < nonceChars.length; ++index) {
nonceChars[index] = SYMBOLS.charAt(RANDOM.nextInt(SYMBOLS.length()));
}
return new String(nonceChars);
}
二、获取IP
private String getIpAddr(HttpServletRequest request) {
String ip = request.getHeader("X-Forwarded-For");
if (StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)) {
//多次反向代理后会有多个ip值，第一个ip才是真实ip
int index = ip.indexOf(",");
if (index != -1) {
return ip.substring(0, index);
} else {
return ip;
}
}
ip = request.getHeader("X-Real-IP");
if (StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)) {
return ip;
}
return request.getRemoteAddr();
}
三、把数组所有元素排序，并按照“参数=参数值”的模式用“&”字符拼接成字符串**
public static String createLinkString(Map<String, String> params) {
List<String> keys = new ArrayList<>(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) {// 拼接时，不包括最后一个&字符
prestr = prestr + key + "=" + value;
} else {
prestr = prestr + key + "=" + value + "&";
}
}
return prestr;
}
四、生成签名
public static String sign(String text, String key, String input_charset) {
text = text + "&key=" + key;
return DigestUtils.md5Hex(getContentBytes(text, input_charset));
}
五、请求微信接口
public static String httpRequest(String requestUrl, String requestMethod, String outputStr) {
// 创建SSLContext
StringBuffer buffer = null;
try {
URL url = new URL(requestUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod(requestMethod);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.connect();
//往服务器端写内容
if (null != outputStr) {
OutputStream os = conn.getOutputStream();
os.write(outputStr.getBytes("utf-8"));
os.close();
}
// 读取服务器端返回的内容
InputStream is = conn.getInputStream();
InputStreamReader isr = new InputStreamReader(is, "utf-8");
BufferedReader br = new BufferedReader(isr);
buffer = new StringBuffer();
String line = null;
while ((line = br.readLine()) != null) {
buffer.append(line);
}
br.close();
} catch (Exception e) {
e.printStackTrace();
}
return buffer.toString();
}
六、解析微信返回的XML 转换成map
public static Map doXMLParse(String strxml) throws Exception {
if (null == strxml || "".equals(strxml)) {
return null;
}
Map m = new HashMap();
InputStream in = String2Inputstream(strxml);
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 = getChildrenText(children);
}
m.put(k, v);
}
//关闭流
in.close();
return m;
}
