成功解决：Invalid encoding name “UTF8“

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前言

出现这个问题可能由于不同的原因、本文是由于**Mapper.xml文件中设置的编码格式问题，需要将encoding="UTF8" 改成encoding="UTF-8"。

1、报错信息

Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 38; Invalid encoding name "UTF8".
	at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:263) ~[mybatis-3.5.6.jar:3.5.6]
	at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:127) ~[mybatis-3.5.6.jar:3.5.6]
	at org.apache.ibatis.builder.xml.XMLMapperBuilder.<init>(XMLMapperBuilder.java:81) ~[mybatis-3.5.6.jar:3.5.6]
	at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:610) ~[mybatis-spring-2.0.6.jar:2.0.6]
	... 79 common frames omitted
Caused by: org.xml.sax.SAXParseException: Invalid encoding name "UTF8".
	at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.impl.XMLEntityManager.createReader(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.impl.XMLEntityManager$ScannedEntity.setReader(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.impl.XMLEntityScanner.setEncoding(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanXMLDeclOrTextDecl(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.impl.XMLDocumentScannerImpl$XMLDeclDispatcher.dispatch(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.parsers.DOMParser.parse(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source) ~[xercesImpl-2.11.0.jar:na]
	at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:261) ~[mybatis-3.5.6.jar:3.5.6]
	... 82 common frames omitted

2、解决方法

需要将encoding="UTF8" 改成encoding="UTF-8"

3、成功解决

在此运行程序可以成功启动