今天配置mybatis3时不小心配置成了下面的这样，结果就报一大堆的错误，说是配置文件的问题，我勒个去。我晕。

配置文件的配置信息如下：（其中就是把别名放在了environments节点元素的上面。结果就报这个错误。我晕。

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

<!DOCTYPE configuration

PUBLIC "-//ibatis.apache.org//DTD Config 3.0//EN"

">

<configuration>

<typeAliases>

<typeAlias alias="myuser" type="com.action.Users" />

</typeAliases>

<!-- 加载jdbc.properties -->

    <properties resource="jdbc.properties"/>

    <environments default="development">

        <environment id="development">

            <transactionManager type="JDBC"/>

            <dataSource type="POOLED">

                <property name="driver" value="${driver}"/>

                <property name="url" value="${url}"/>

                <property name="username" value="${username}"/>

                <property name="password" value="${password}"/>

            </dataSource>

        </environment>

    </environments>

    <!-- 加载映射文件 -->

    <mappers>

        <mapper resource="com/action/User.xml"/>

    </mappers>

</configuration>

错误信息如下：

Exception in thread "main" java.lang.ExceptionInInitializerError

    at com.action.Result.test(Result.java:22)

    at com.action.Result.main(Result.java:14)

Caused by: org.apache.ibatis.exceptions.PersistenceException:

### Error building SqlSession.

### Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException: The content of element type "configuration" must match "(properties?,settings?,typeAliases?,typeHandlers?,objectFactory?,objectWrapperFactory?,plugins?,environments?,databaseIdProvider?,mappers?)".

    at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23)

    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:51)

    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:35)

    at com.action.IBatisSessionFactory.<init>(IBatisSessionFactory.java:18)

    at com.action.IBatisSessionFactory.<clinit>(IBatisSessionFactory.java:13)

    ... 2 more

Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException: The content of element type "configuration" must match "(properties?,settings?,typeAliases?,typeHandlers?,objectFactory?,objectWrapperFactory?,plugins?,environments?,databaseIdProvider?,mappers?)".

    at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:253)

    at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:117)

    at org.apache.ibatis.builder.xml.XMLConfigBuilder.<init>(XMLConfigBuilder.java:57)

    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:48)

    ... 5 more

Caused by: org.xml.sax.SAXParseException: The content of element type "configuration" must match "(properties?,settings?,typeAliases?,typeHandlers?,objectFactory?,objectWrapperFactory?,plugins?,environments?,databaseIdProvider?,mappers?)".

    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)

    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)

    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)

    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)

    at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java:2017)

    at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java:901)

    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)

    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2938)

    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)

    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)

    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)

    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)

    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)

    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:235)

    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)

    at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:251)

    ... 8 more

后来就把上面的配置文件中的别名放在了environments节点的下面，调试通过。我晕！我擦！

我勒个去。

真是太没道理了。知道你mybatis3现在框架不错，又是apache的产品。但是你也不能这样做的纠结人啊。我没法说你去。、

 

没天理啊！