@Mapper @Insert 注解式方法批量入库（ORACLE数据库）

方法一：使用 Insert All into 实现

1.创建实体类（DemoBean）方便处理数据

public class DemoBean {
    private String demo1;
    private String demo2;
    private String demo3;
    private String demo4;

    public String getDemo1() {
        return demo1;
    }

    public void setDemo1(String demo1) {
        this.demo1 = demo1;
    }

    public String getDemo2() {
        return demo2;
    }

    public void setDemo2(String demo2) {
        this.demo2 = demo2;
    }

    public String getDemo3() {
        return demo3;
    }

    public void setDemo3(String demo3) {
        this.demo3 = demo3;
    }

    public String getDemo4() {
        return demo4;
    }

    public void setDemo4(String demo4) {
        this.demo4 = demo4;
    }
}

2.mapper 中的批量插入接口方法

/**
 * 批量插入数据 入表（batch_demo）
 * @param list
 */
@Insert({"<script>" ,
        "INSERT ALL ",
        "<foreach collection='list' item='element' index='index' separator=''>" ,
        "INTO batch_demo(demo1,demo2,demo3,demo3,demo4) ",
        "VALUES(",
        "#{element.demo1,jdbcType=VARCHAR},",
        "#{element.demo2,jdbcType=VARCHAR},",
        "#{element.demo3,jdbcType=VARCHAR},",
        "#{element.demo4,jdbcType=VARCHAR})",
        "</foreach>",
        "SELECT * FROM dual",
        "</script>"})
void batchAddDemo(@Param("list") List<DemoBean> list);

3.调用即可

方法二：使用 insert into ... select ... from dual 实现；

         相较于方法一效率快点

mapper 中的批量插入接口方法

/**
     * 批量插入数据 入表（batch_demo）
     * @param list
     */
    @Insert({"<script>" ,
            "INSERT INTO batch_demo(demo1,demo2,demo3,demo3,demo4) (",
            "<foreach collection='list' item='element' index='index' separator='union all'>" ,
            " (select",
            "#{element.demo1,jdbcType=VARCHAR},",
            "#{element.demo2,jdbcType=VARCHAR},",
            "#{element.demo3,jdbcType=VARCHAR},",
            "#{element.demo4,jdbcType=VARCHAR}",
            "from dual)"
            "</foreach>",
            ")",
            "</script>"})
    void batchAddDemo(@Param("list") List<DemoBean> list);