本文主要是介绍XML fragments parsed from previous mappers already contains value for xxxxxxxx，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
报错信息
Caused by: java.lang.IllegalArgumentException: XML fragments parsed from previous mappers already contains value for com.jeeplus.modules.declare.dao.DeclareMattersDao.statisticalat org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:833)at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:1)at org.apache.ibatis.builder.xml.XMLMapperBuilder.sqlElement(XMLMapperBuilder.java:397)at org.apache.ibatis.builder.xml.XMLMapperBuilder.sqlElement(XMLMapperBuilder.java:387)at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:141)... 79 more一、确定大致方向，提取重点信息
XML fragments parsed from previous mappers already contains value for com.jeeplus.modules.declare.dao.DeclareMattersDao.statistical。大致翻译得知：在DeclareMattersDao对应的XML中“statistical”已经包含，即已存在
二、发现问题根本
找到对应XML文件，全局搜索“statistical”，发现有两处“statistical”（如下图所示）
三、解决错误
去重：删除一个重复的“statistical”即可
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