MalformedByteSequenceException:3 字节的 UTF-8 序列的字节 3 无效。

错误如下：

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlTemplate' defined in URL [file:/E:/sources/gitosc/wms-mine/wms-inventory/wms-inventory-web/target/classes/spring-config-dao.xml]: Cannot resolve reference to bean 'sessionFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in URL [file:/E:/sources/gitosc/wms-mine/wms-inventory/wms-inventory-web/target/classes/spring-config-dao.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [sqlmap-config.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: 3 字节的 UTF-8 序列的字节 3 无效。  
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:334)  
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108)  
    at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:637)  
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:145)  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1075)  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:979)  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:487)  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)  
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296)  
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)  
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293)  
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198)  
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:445)  
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:419)  
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:547)  
    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:155)  
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)  
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:304)  
    ... 60 more  
Caused by: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: 3 字节的 UTF-8 序列的字节 3 无效。  
    at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.invalidByte(UTF8Reader.java:687)  
    at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.read(UTF8Reader.java:435)  
    at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.load(XMLEntityScanner.java:1753)  
    at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.scanData(XMLEntityScanner.java:1252)  
    at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanComment(XMLScanner.java:778)  
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanComment(XMLDocumentFragmentScannerImpl.java:1046)  
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2980)  
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)  
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)  
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)  
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)  
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)  
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)  
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:347)  
    at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:251)  
    ... 93 more</span>  

解决办法：

1.检查xml的头文件和右键属性里面的编码是否一致

2.尝试在pom.xml加入如下配置：

 <build>  
<resources>  
    <resource>  
        <directory>src/main/resources</directory>  
        <filtering>true</filtering>  
    </resource>  
</resources>  
  
<plugins>  
    <plugin>  
        <groupId>org.apache.maven.plugins</groupId>  
        <artifactId>maven-resources-plugin</artifactId>  
        <configuration>  
            <encoding>UTF-8</encoding>  
        </configuration>  
    </plugin>  
             </plugins>  
</build>  

在此基础上，增加几条注意事项，如果都配置确保如下没问题了，还是不好使，就用如上的方式：

1：检查workspace 工作目录的编码是不是UTF-8

2：检查项目的编码

3：检查.xml文件的编码是否和xml文件的头部编码相匹配

基本配置好这三项，不会出现如上问题。