iBatis调用存储过程以及MySQL创建存储过程

首先是MySQL中创建存储过程的SQL

-- 列出全部的存储过程
SHOW PROCEDURE STATUS;

-- 查看一个已存在的存储过程的创建语句,假设此存储过程不存在,会提示SQL错误（1305）：PROCEDURE pro_init does not exist
SHOW CREATE PROCEDURE pro_init;

-- 创建存储过程
DROP PROCEDURE IF EXISTS pro_init; -- 删除一个已存在的存储过程
DELIMITER //                       -- 声明当前MySQL分隔符为//
CREATE PROCEDURE pro_init(username VARCHAR(60), OUT userId INT)
BEGIN
	SELECT user_id INTO userId FROM user_info ui WHERE ui.username=username;
	IF userId IS NULL OR userId='' THEN
		SELECT 0 INTO userId;
	ELSE
		INSERT INTO t_worldcup_team(userId, teamAA, teamBB, updateTime, createTime)
		VALUES(userId, '巴西', '俄罗斯', NULL, now());
		INSERT INTO t_worldcup_team(userId, teamAA, teamBB, updateTime, createTime)
		VALUES(userId, '法国', '西班牙', NULL, now());
		INSERT INTO t_worldcup_team(userId, teamAA, teamBB, updateTime, createTime)
		VALUES(userId, '荷兰', '英格兰', NULL, now());
		INSERT INTO t_worldcup_team(userId, teamAA, teamBB, updateTime, createTime)
		VALUES(userId, '智利', '意大利', NULL, now());
		INSERT INTO t_worldcup_team(userId, teamAA, teamBB, updateTime, createTime)
		VALUES(userId, '伊朗', '葡萄牙', NULL, now());
		INSERT INTO t_worldcup_team(userId, teamAA, teamBB, updateTime, createTime)
		VALUES(userId, '希腊', '阿根廷', NULL, now());
	END IF;
END
//                                 -- 分隔符,表示此SQL语句结束

-- 调用存储过程
CALL pro_init('hongyu', @userId);
SELECT @userId;

以下是iBatis配置文件的写法

<parameterMap id="pro_init_Map" class="java.util.Map">
	<parameter property="username" javaType="java.lang.String" jdbcType="VARCHAR" mode="IN"/>
	<parameter property="userId" javaType="java.lang.Integer" jdbcType="INT" mode="OUT"/>
</parameterMap>
<procedure id="pro_init" parameterMap="pro_init_Map">
	{call pro_init(?, ?)}
</procedure>

最后是Java调用类的写法

public int teamInit(String username) {
	int userId = 0;
	Map<String, Object> paramMap = new HashMap<String, Object>();
	paramMap.put("username", username);
	paramMap.put("userId", userId);
	this.getSqlMapClientTemplate().queryForObject("worldcup_guess.pro_init", paramMap);
	return (Integer)paramMap.get("userId");
}