Mybatis批量插入Oracle的小坑

Service

public boolean foreachinsert(Test2 test) {
	// TODO Auto-generated method stub
	
	List<Test2> list = new ArrayList<>();
	
	Test2 t = null;
	
	try {
		
		for(int i = 0;i<6;i++){
			
			t = new Test2();
			
			t.setId(i);
			
			t.setAge(i+"");
			
			t.setName(i+"");
			
			list.add(t);
			
		}

		System.out.println("i am list list lsit list *************"+list.toString());
		empMapper.foreachinsert(list);
		return true;
		
	} catch (Exception e) {
		// TODO: handle exception
		e.printStackTrace();
	}
	return false;
	
}

mapper

	//批量增加
	public void foreachinsert(List<Test2> item);

xml

	<insert id="foreachinsert" parameterType="java.util.List">
		INSERT INTO TX_TEST (NAME,AGE)
        <foreach close=")" collection="list" item="item" open="(" separator="union all">
            select
            #{item.name},#{item.age}
            from dual
    	</foreach>

	</insert>

稍微改进下可以这么写

<insert id="foreachinsert" parameterType="java.util.List">
		INSERT INTO TX_TEST (NAME,AGE)
        <foreach close=")" collection="list" item="item" open="(" separator="union all">
            select
            <if test="item.name != null and item.name != ''">
            #{item.name},
            </if>
            <if test="item.name == null or item.name == ''">
            null,
            </if>
            <if test="item.age != null and item.age != ''">
            #{item.age}
            </if>
            <if test="item.age == null or item.age == ''">
            null
            </if>
            from dual
    	</foreach>

	</insert>