JDBC的CRUD操作之PreparedStatement的保存操作

    @Test
	/**
	 * 保存操作
	 */
	public void demo1(){
		Connection conn = null;
		PreparedStatement pstmt = null;
		try{
			// 获得连接:
			conn = JDBCUtils.getConnection();
			// 编写SQL语句:
			String sql = "insert into user values (null,?,?,?,?)";
			// 预编译SQL:
			pstmt = conn.prepareStatement(sql);
			// 设置参数:
			pstmt.setString(1, "eee");
			pstmt.setString(2, "abc");
			pstmt.setString(3, "旺财");
			pstmt.setInt(4, 32);
			// 执行SQL
			int num = pstmt.executeUpdate();
			if(num > 0){
				System.out.println("保存成功！");
			}
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			JDBCUtils.release(pstmt, conn);
		}
	}