Type mismatch affecting row number 0 and column type 'BIGINT': Value [7] is of type [Integer] and c

 错误代码如下

org.springframework.dao.TypeMismatchDataAccessException: Type mismatch affecting row number 0 and column type 'BIGINT': Value [7] is of type [java.lang.Integer] and cannot be converted to required type [int]
    at org.springframework.jdbc.core.SingleColumnRowMapper.mapRow(SingleColumnRowMapper.java:101)
    at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:93)
    at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:60)
    at org.springframework.jdbc.core.JdbcTemplate$1QueryStatementCallback.doInStatement(JdbcTemplate.java:455)

使用Spring框架 运用JdbcTemplate来查询表里的数据的条数；出错了

错误代码如下

//获取单个的值
@Test
public void queryone(){String sql="select count(*) from user";int a=jdbcTemplate.queryForObject(sql, int.class);System.out.println(a);
}

 错误原因

这个错误信息说的很明显，我给出的结果类型是int类型，实际应该是BIGINT类型，

正确代码如下

//获取单个的值
@Test
public void queryone(){String sql="select count(*) from user";System.out.println(jdbcTemplate.queryForObject(sql, BigInteger.class));
}