描述：查询订单状态

ics-web/src/main/java/com/ics/controller/mobile/meeting/WxPayController.java

@@ -82,4 +82,29 @@ public class WxPayController extends BaseController {
         return returnParam;
     }
 
+
+    /**
+     * 订单支付后回调
+     */
+    @PostMapping("wxMerchantOrderQuery")
+    public HashMap wxMerchantOrderQuery(@RequestBody Map<String , String> paramMap) {
+        HashMap<String, String> resultMap = wxPayCommon.wxMerchantOrderQuery(paramMap.get("outTradeNo"));
+        // 商户订单号
+        String out_trade_no = resultMap.get("out_trade_no");
+        // 微信支付订单号
+        String transaction_id = resultMap.get("transaction_id");
+        // 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（仅付款码支付会返回）
+        // * USERPAYING：用户支付中（仅付款码支付会返回）
+        // * PAYERROR：支付失败（仅付款码支付会返回）
+        String trade_state = resultMap.get("trade_state");
+
+        return R.data(resultMap);
+    }
+
+
 }

ics-web/src/main/java/com/ics/controller/mobile/pay/wx/WxPayCommon.java

@@ -7,6 +7,7 @@ import com.ics.controller.mobile.pay.wx.dto.WxChatPayDto;
 import com.wechat.pay.contrib.apache.httpclient.util.PemUtil;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpGet;
 import org.apache.http.client.methods.HttpPost;
 import org.apache.http.entity.StringEntity;
 import org.apache.http.util.EntityUtils;
@@ -72,6 +73,20 @@ public class WxPayCommon {
         return httpPost;
     }
 
+    /**
+     * 获取请求对象（Get请求）
+     *
+     * @return Get请求
+     */
+    public HttpGet getHttpGet(String url) {
+        // 1.设置请求地址
+        HttpGet httpGet = new HttpGet(wxPayConfig.getDomain().concat(url));
+        // 3.设置请求信息
+        httpGet.setHeader("Accept", "application/json");
+        return httpGet;
+    }
+
+
     /**
      * 解析响应数据
      *
@@ -164,8 +179,6 @@ public class WxPayCommon {
     }
 
 
-
-
     /**
      * 创建微信支付订单-jsapi方式
      *
@@ -217,5 +230,24 @@ public class WxPayCommon {
     }
 
 
+    /**
+     * 商户订单号查询订单
+     */
+    public HashMap<String, String> wxMerchantOrderQuery(String outTradeNo) {
+        // 创建请求
+        HttpGet httpGet = getHttpGet(WxApiConstants.MERCHANT_ORDER_NUMBER_QUERY + "/" + outTradeNo + "?mchid=" + wxPayConfig.getMchId());
+        // 完成签名并执行请求
+        CloseableHttpResponse response = null;
+        try {
+            response = wxPayConfig.getWxPayClient().execute(httpGet);
+        } catch (IOException e) {
+            e.printStackTrace();
+            throw new RuntimeException("商户订单号查询订单请求失败");
+        }
+        // 解析response对象
+        HashMap<String, String> resultMap = resolverResponse(response);
+        return resultMap;
+    }
+
 
 }

ics-web/src/main/java/com/ics/controller/mobile/pay/wx/constant/WxApiConstants.java

@@ -12,4 +12,10 @@ public class WxApiConstants {
     public static final String JSAPI_PAY = "/v3/pay/transactions/jsapi";
 
 
+    /**
+     * 商户订单号查询订单
+     */
+    public static final String MERCHANT_ORDER_NUMBER_QUERY = "/v3/pay/transactions/out-trade-no";
+
+
 }