mybatis中数组传递注意事项--简

mybatis传递数组数据---本人了解两种

第一种：直接传递数组数据

mapper中的配置：

1. <delete id="deleteBrandByIdsArray" parameterType="Integer[]">

2. delete from bbs_brand

3. <where>

4. id

5. <foreach collection="array" item="id" open="in (" close=")" separator=",">

6. #{id}

7. </foreach>

8. </where>

9. </delete>

service中的配置：

1. public void deleteBrandById(Integer[] ids) {

2. brandMapper.deleteBrandByIdsArray(ids);

3. }

第二种：将数组放在map中传递：

mapper中的配置：

1. <delete id="deleteBrandByIds" parameterType="java.util.Map">

2. delete from bbs_brand

3. <where>

4. id

5. <foreach collection="ids" item="id" open="in (" close=")" separator=",">

6. #{id}

7. </foreach>

8. </where>

9. </delete>

service中的配置

1. public void deleteBrandById(Integer[] ids) {

2. Map<String, Object> params = new HashMap<String, Object>();

3. params.put("ids", ids);

4. params.put("params", params);

5. brandMapper.deleteBrandByIds(params);

6. }