modify ResponseWrapper setErrorObject add exception process

Author: Liuchy1

src/main/java/cn/jpush/api/common/connection/NativeHttpClient.java

@@ -206,7 +206,7 @@ private ResponseWrapper _doRequest(String url, String content,
                     break;
 			    case 403:
 			        LOG.error("Request is forbidden! Maybe your appkey is listed in blacklist or your params is invalid.");
-//	                wrapper.setErrorObject();
+	                wrapper.setErrorObject();
 			        break;
 			    case 410:
                     LOG.error("Request resource is no longer in service. Please according to notice on official website.");

src/main/java/cn/jpush/api/common/resp/ResponseWrapper.java

@@ -1,5 +1,7 @@
 package cn.jpush.api.common.resp;
 
+import com.google.gson.JsonElement;
+import com.google.gson.JsonSyntaxException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -35,7 +37,22 @@ public void setRateLimit(String quota, String remaining, String reset) {
     }
 
     public void setErrorObject() {
-        error = _gson.fromJson(responseContent, ErrorObject.class);
+        try {
+            error = _gson.fromJson(responseContent, ErrorObject.class);
+        } catch (JsonSyntaxException e) {
+            int index = responseContent.indexOf("error");
+            if( -1 != index ) {
+                int from = responseContent.indexOf("{", index);
+                int to = responseContent.indexOf("}", from);
+                String errorStr = responseContent.substring(from, to + 1);
+                error = new ErrorObject();
+                try {
+                    error.error = _gson.fromJson(errorStr, ErrorEntity.class);
+                } catch (JsonSyntaxException e1) {
+                    LOG.error("unknown response content:" + responseContent, e);
+                }
+            }
+        }
     }
 
     public boolean isServerResponse() {