Could not load driverClass ${driver} 问题解决

报错信息：测试Spring中的JDBCTemplate时

项目结构：

UserDaoImpl:

@Repository	// 将UserDaoImpl配置到Bean中
public class UserDaoImpl implements IUserDao{
@Autowired	 // 自动装配
private JdbcTemplate jdbcTemplate;

public List queryAll() {
	
	List users = jdbcTemplate.query("select * from user", new RowMapper() {

		public User mapRow(ResultSet rs, int i) throws SQLException {
			User user = new User();
			user.setId(rs.getInt("id"));
			user.setName(rs.getString(2));
			user.setPwd(rs.getString(3));
			return user;
		}
	});
	return users;
}
}

配置文件：

	
		
			jdbc.properties
		
	




	
	
    
    




	

错误原因：配置JDBC.properties文件时，class属性导错包，class=“org.springframework.beans.factory.config.PropertyPlaceholderConfigurer”

		
			
				jdbc.properties