mybatis向动态表名，动态属性表中插入数据，更新数据

1、在向动态表中插入数据后，要返回主键id，需要建实体类。（若是不需要返回主键，则不需要建实体类）

package com.lyf.entity

public class InsertMao{
    //主建
	private int id;
	//表名
	private String tableName;
	//字段和字段值
	private Map<String,String> params;
}

新增sql： 

 <insert id="insertInfo" parameterType="package com.lyf.entity.InsertMap" useGeneratedKeys="true" keyProperty="id">  
     insert ignore into ${tableName}   
      <foreach collection="params.keys" item="key" open="(" close=")" separator="," >  
         ${key} 
      </foreach>  
      values   
      <foreach collection="params.keys"  item="key" open="(" close=")" separator=",">  
         #{params.${key}}  
      </foreach>  
</insert>

更新sql：

<update id="updateInfoByID" parameterType="java.util.Map">
  UPDATE ${tableName} set
      <foreach item="value" index="key" collection="params" separator=",">
         <if test="key != 'id'">
              ${key} = #{value}
         </if>
      </foreach>
       WHERE
     <foreach item="value" index="key" collection="params" separator=",">
           <if test="key == 'id'">
               ID = #{value}
           </if>
     </foreach> 
</update>