java.lang.NullPointerException: target is null for method size

傻逼了，昨天做了半天的无用功（写了改，改了写），哎！以为是替换的数据类型造成的问题，现在发现，完全是驴头不对马嘴！

错误的XMI配置如下：

<if test="pcodeList.size() != null and pcodeList.size() > 0">
	AND ar.PCODE IN 
	<foreach collection="pcodeList" item="pcode" index="index" open="(" separator="," close=")">
		#{pcode}
	</foreach>
</if>

正确的配置如下：

<if test="pcodeList != null and pcodeList.size() > 0">
	AND ar.PCODE IN 
	<foreach collection="pcodeList" item="pcode" index="index" open="(" separator="," close=")">
		#{pcode}
	</foreach>
</if>

因为一下改了太多地方，找错就会出现很大的误差，以后一定要引以为戒！

感谢某某某提供解惑：http://blog.csdn.net/qq279071978/article/details/53745116