mybatis 中配置文件中的配置项以及配置顺序

Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 34; columnNumber: 17; 元素类型为 “configuration” 的内容必须匹配 “(properties?,settings?,typeAliases?,typeHandlers?,objectFactory?,objectWrapperFactory?,reflectorFactory?,plugins?,environments?,databaseIdProvider?,mappers?)”。
at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:259)
at org.apache.ibatis.parsing.XPathParser.(XPathParser.java:125)
at org.apache.ibatis.builder.xml.XMLConfigBuilder.(XMLConfigBuilder.java:81)
at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:77)
… 25 more

在配置文件中的位置必须符合要求,否则会报错,顺序如下:
properties,
settings,
typeAliases,
typeHandlers,
objectFactory,
objectWrapperFactory,
plugins,
environments,
databaseIdProvider,
mappers

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