[hotfix-35904][http] 解决http发送中文乱码

Author: FlechazoW

http/http-sink/src/main/java/com/dtstack/flink/sql/sink/http/DtHttpClient.java

@@ -118,7 +118,7 @@ public static void post(String httpUrl,
                             String contentEncoding) throws IOException {
         HttpPost httpPost = new HttpPost(httpUrl);
         httpPost.setConfig(requestConfig);
-        StringEntity entity = new StringEntity(message);
+        StringEntity entity = new StringEntity(message, contentEncoding);
         entity.setContentType(contentType);
         entity.setContentEncoding(contentEncoding);
         httpPost.setEntity(entity);