[problem solving] org.apache.ibatis.exceptions PersistenceException: Error building SqlSession. 1-byte word of UTF-8 sequence

Problem description ：

org.apache.ibatis.exceptions.PersistenceException:

Error building SqlSession.

The error may exist in com/kuang/dao/UserMapper.xml

Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 6; columnNumber: 14; 1 Bytes of UTF-8 The byte of the sequence 1 Invalid .

---

org.apache.ibatis.exceptions.PersistenceException:

Error building SqlSession.

Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 5; columnNumber: 18; 1 Bytes of UTF-8 The byte of the sequence 1 Invalid .

terms of settlement ：

take mybaits-config.xml and UserMapper.xml Header in configuration file UTF-8 Change it to UTF8

If the project has other .xml The configuration file , It can be modified

pom.xml There's no need to change the document

Error log ：

"D:\Program Files\Java\jdk1.8.0_261\bin\java.exe" -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:\Program Files\IntelliJ IDEA 2020.2.1\lib\idea_rt.jar=13729:D:\Program Files\IntelliJ IDEA 2020.2.1\bin" -Dfile.encoding=UTF-8 -classpath "D:\Program Files\IntelliJ IDEA 2020.2.1\lib\idea_rt.jar;D:\Program Files\IntelliJ IDEA 2020.2.1\plugins\junit\lib\junit5-rt.jar;D:\Program Files\IntelliJ IDEA 2020.2.1\plugins\junit\lib\junit-rt.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\charsets.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\deploy.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\access-bridge-64.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\cldrdata.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\dnsns.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\jaccess.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\jfxrt.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\localedata.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\nashorn.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\sunec.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\sunjce_provider.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\sunmscapi.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\sunpkcs11.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\zipfs.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\javaws.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\jce.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\jfr.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\jfxswt.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\jsse.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\management-agent.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\plugin.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\resources.jar;D:\Program Files\Java\jdk1.8.0_261\jre\lib\rt.jar;D:\IdeaProjects\MyBatis-Study\mybatis-01\target\test-classes;D:\IdeaProjects\MyBatis-Study\mybatis-01\target\classes;D:\Program Files\mavenRepository\mysql\mysql-connector-java\8.0.16\mysql-connector-java-8.0.16.jar;D:\Program Files\mavenRepository\com\google\protobuf\protobuf-java\3.6.1\protobuf-java-3.6.1.jar;D:\Program Files\mavenRepository\org\mybatis\mybatis\3.4.2\mybatis-3.4.2.jar;D:\Program Files\mavenRepository\junit\junit\4.11\junit-4.11.jar;D:\Program Files\mavenRepository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar" com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 com.kuang.dao.UserDaoTest,test
org.apache.ibatis.exceptions.PersistenceException: 
### Error building SqlSession.
### The error may exist in com/kuang/dao/UserMapper.xml
### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException; lineNumber: 6; columnNumber: 14; 1  Bytes of  UTF-8  The byte of the sequence  1  Invalid .
	at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
	at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80)
	at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:64)
	at com.kuang.utils.MyBatisUtils.<clinit>(MyBatisUtils.java:23)
	at com.kuang.dao.UserDaoTest.test(UserDaoTest.java:38)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException; lineNumber: 6; columnNumber: 14; 1  Bytes of  UTF-8  The byte of the sequence  1  Invalid .
	at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:120)
	at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:98)
	at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:78)
	... 25 more
Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException; lineNumber: 6; columnNumber: 14; 1  Bytes of  UTF-8  The byte of the sequence  1  Invalid .
	at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:259)
	at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:125)
	at org.apache.ibatis.builder.xml.XMLMapperBuilder.<init>(XMLMapperBuilder.java:78)
	at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:368)
	at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:118)
	... 27 more
Caused by: org.xml.sax.SAXParseException; lineNumber: 6; columnNumber: 14; 1  Bytes of  UTF-8  The byte of the sequence  1  Invalid .
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:204)
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:178)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:400)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:306)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:1029)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:605)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:507)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:867)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:796)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:142)
	at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:247)
	at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
	at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:257)
	... 31 more
Caused by: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: 1  Bytes of  UTF-8  The byte of the sequence  1  Invalid .
	at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.invalidByte(UTF8Reader.java:702)
	at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.read(UTF8Reader.java:568)
	at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.load(XMLEntityScanner.java:1895)
	at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.scanData(XMLEntityScanner.java:1375)
	at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanComment(XMLScanner.java:801)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanComment(XMLDocumentFragmentScannerImpl.java:1036)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:914)
	... 39 more
SqlSessionFactory Instance acquisition exception 

java.lang.NullPointerException
	at com.kuang.utils.MyBatisUtils.getSqlSession(MyBatisUtils.java:33)
	at com.kuang.dao.UserDaoTest.test(UserDaoTest.java:38)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)


Process finished with exit code -1