常量定义

public class TestCfg {
    public static final String LX_ID = "lx_id";
    public static boolean isLxId (String lxId){
        return LX_ID_WBDWJKF.equals(lxId);
    }
   }

mybaits 引用

<if test="@com.test.constant.TestCfg@isLxId (lxId)">

判断数字

private int intNum;
<if test="intNum == 1 "> </if>

判断数字字符串

private String strNum;
<if test="strNum == '1'.toString() "> </if>