Mybatis xml中引用静态方法、常量或者枚举

一、引用静态方法

（1）在ONGL中引用

<select id="selectTest">
<if test="@com.test.DateUtils@isLeapYear(year)==true">
  select * from tableA
</if>
<if test="@com.test.DateUtils@isLeapYear(year)==false">
  select * from tableB
</if>
</select>

（2）在SQL中引用

<select id="selectTest">
  select * from tableA where year=${@com.test.DateUtils@getYear()}
</select>

二、引用静态常量

（1）在ONGL中引用

<select id='selectTest'>
<if test="year==@com.test.Consants@CURRENT_YEAR">
  select * from tableA
</if>
</select>

（2）在SQL中引用

<select id="selectTest">
  select * from tableA where year=${@com.test.Constants@CURRENT_YEAR}
</select>

三、引用枚举类型

（1）在ONGL中引用

<select id='selectTest'>
<if test="year==@com.test.Enums@YEAR.getValue()">
  select * from tableA
</if>
</select>

（2）在SQL中引用

<select id="selectTest">
  select * from tableA where year=${@com.test.Enums@YEAR.getValue()}
</select>

四. 引用内部类

内部类引用使用 $ 符号

<select id="selectTest">
  select * from tableA 
  where year=${@com.test.OutClasses$InnerClassEnums@YEAR.getValue()}
</select>