spring mvc 插入一条数据 返回该数据的主键编号

 import org.springframework.jdbc.core.PreparedStatementCreator;
 import org.springframework.jdbc.support.GeneratedKeyHolder;
 import org.springframework.jdbc.support.KeyHolder;

 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;

     public int addrole(final Object[] params){

         KeyHolder keyHolder = new GeneratedKeyHolder();
         final String sql = "insert into role (rolename,status) values (?,1)";

         this.jdbcTemplate.update(new PreparedStatementCreator(){
             public PreparedStatement createPreparedStatement(Connection connection) throws SQLException {
                 PreparedStatement ps = connection.prepareStatement(sql,Statement.RETURN_GENERATED_KEYS);
                 for(int i = 0; i < params.length; i++) {
                     ps.setString(i + 1, params[i].toString());
                 }
                 return ps;
             }
         }, keyHolder);
         return keyHolder.getKey().intValue();
     }