Mybatis动态表查询 ${} 预编译使用

controller

public void getData() {
		try {
			Object obj=userMapper.getInfo("tableName");
		} catch (IOException e) {
			e.printStackTrace();
		}
		
}

mapper

Object getInfo(@Param("tableName")String tableName);

• 注解一定要加 @Param("tableName")

xml

<select id="getInfo" resultType="java.util.Map">
  SELECT * FROM ${tableName}; 
</select>