国贸2.0系统推送合同：回调返回参数修改

zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/api/ContractApiImpl.java

@@ -389,7 +389,7 @@ public class ContractApiImpl implements ContractApi {
         // 回调参数
         JSONObject req = new JSONObject();
         req.set("messageKey", pushReqVO.getBusiBillCode());
-        req.set("messageBody", body.toString());
+        req.set("messageBody", body);
         try {
             log.info("国贸系统推送合同回调参数：{}",req);
             String res = shareServiceUtil.callShareService("S_EPLAT_04", req.toString());