xml配置问题--------不允许有匹配 "[xX][mM][lL]" 的处理指令目标

[亡魂溺海] 提交于 2020-05-06 03:26:08
  • 剪不断,理还乱,是BUG

  •   相遇:不允许有匹配 "[xX][mM][lL]" 的处理指令目标

  在编写MyBatic框架时,纯手编写mybatic-config.xml文件,遇见了你

Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: 
### Error building SqlSession.
### Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 7; 不允许有匹配 "[xX][mM][lL]" 的处理指令目标。
    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 f.b.y.test.H.main(H.java:21)
Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 7; 不允许有匹配 "[xX][mM][lL]" 的处理指令目标。
    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.XMLConfigBuilder.<init>(XMLConfigBuilder.java:82)
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:77)
    ... 2 more
Caused by: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 7; 不允许有匹配 "[xX][mM][lL]" 的处理指令目标。
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:198)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:441)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
    at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1436)
    at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanPIData(XMLScanner.java:723)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanPIData(XMLDocumentFragmentScannerImpl.java:1018)
    at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanPI(XMLScanner.java:691)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:912)
    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:257)
    ... 5 more

 

  • 眼里寻它千百次,蓦然回首它却在开头处

  • 相知:XML文件的第一个元素且前面不能空格
 <?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">

    <!-- configuration构建MyBatic上下文 -->
<configuration>

    <typeAliases> 
    <typeAlias alias="user" type="f.b.y.pojo.User"/> 
    </typeAliases> 
    
    <!--数据库环境  -->
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"></transactionManager>
                <dataSource type="POOLED">
                    <property name="driver" value="com.mysql.jdbc.Driver"/>
                    <property name="url" value="jdbc:mysql://localhost:3306/mybatisnote"/>
                    <property name="username" value="root"/>
                    <property name="password" value="12345678"/>
                </dataSource>    
        </environment>
    </environments>
    
    <!-- 映射文件 -->
        <mappers>
            <mapper resource="f/b/y/pojo/sqlmap/usersql.xml"/>
        </mappers>
</configuration>

 

  • 相爱:能不能再靠近一些(去掉前面空格)

 <?xml version="1.0" encoding="UTF-8" ?>

 

  • 因为遇见,所以感悟

1、人总是不断的犯错误,面对错误,大多数人的开始选择是找错误,找方法解决它,往往事与愿违。对于错误本身而言,错误就是错误,无论大 小,都是致命的,细心显得十分重要。

2、每一个人都会犯错,可怕的不是错误本身,可怕的是没有勇气去面对、去发现、去解决它。

3、每一个人一路走来不可能一帆风顺,代码运行可能是你正常代码不正常或你不正常代码正常。那些错误将磨砺你的意志、丰富你的阅历,也 许,下次遇到它你会觉得错误是多么亲切可爱,解决错误是多么荣耀的一件事啊!

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