[GitHub] [shardingsphere] ionauq opened a new issue #15451: shardingsphere-jdbc with jdbcTemplate.update() throw null exception

Wed, 16 Feb 2022 04:33:04 -0800 


ionauq opened a new issue #15451:
URL: https://github.com/apache/shardingsphere/issues/15451


   ## Question
   
   when i use `shardingsphere-jdbc-core` `5.0.0` with  `JdbcTemplate.update()` 
in readwrite-splitting mode, the  `keyHolder` return null.
   
   example:
   
   ```
     GeneratedKeyHolder keyHolder = new GeneratedKeyHolder();
           int row = jdbcTemplate.update((conn) -> {
               PreparedStatement ps = conn.prepareStatement("insert into tags 
(app_id, name) value(?, ?)", Statement.RETURN_GENERATED_KEYS);
               ps.setLong(1, 1L);
               ps.setString(2, "test");
               return ps;
           }, keyHolder);
   
           long id = keyHolder.getKey().longValue();
   ```
   
   
![image](https://user-images.githubusercontent.com/4327765/154261641-b06ba707-8860-4c1f-8552-c27b643de862.png)
   
   
![image](https://user-images.githubusercontent.com/4327765/154264243-e8c149ec-5062-4f62-b75d-aeb356f9ae2e.png)
   
   The program runs to `new GeneratedKeysResultSet`,  if the column is not 
null, the program is normal.
   
   Do I need to configure specific information? 
   
   thanks
   


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