#2343, chinese character for PostgreSQL

sharding-proxy/sharding-proxy-transport/sharding-proxy-transport-postgresql/src/main/java/org/apache/shardingsphere/shardingproxy/transport/postgresql/packet/command/query/text/PostgreSQLDataRowPacket.java

@@ -50,7 +50,7 @@ public final class PostgreSQLDataRowPacket implements PostgreSQLPacket {
                     payload.writeBytes((byte[]) each);
                 } else {
                     String columnData = each.toString();
-                    payload.writeInt4(columnData.length());
+                    payload.writeInt4(columnData.getBytes().length);
                     payload.writeStringEOF(columnData);
                 }
             }