发表于: 2018-03-21 20:40:45
1 572
今日进度:
1.按照
http://www.cnblogs.com/baipeng/p/5743501.html
中的实例完成了操作,但是并不能链接数据库,第一次报错
是配置文件名称错误导致的。在resource下重新创建mybits-config.xml文件。
这次报错较为复杂,
### Error building SqlSession.
### The error may exist in SQL Mapper Configuration
### Cause: org.apache.ibatis.builder.
BuilderException:Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.'
BuilderException: Error registering typeAlias for 'Student'. Cause: java.lang.
ClassNotFoundException: Cannot find class: com.mybatis3.com.mybatis3.domain.Student
先对错误进行理解:
###sql配置出现问题
###错误可能出现在SQLmapper配置文件中
###
生成失误:SQL Mapper 设置:生成错误
生成错误:错误的别名字符:Student
错误:没有找到类:com.mybatis3.com.mybatis3.domain.Student
改正:先对照结构表和mapper.xml将类改成:
com.mybatis3.mappers.Student
检查Mapper的别名部分:
将划中部分更改
仍然存在错误:
### Error building SqlSession.
### The error may exist in com/mybatis3/mappers/StudentMapper.xml
### Cause: org.apache.ibatis.builder.
BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/mybatis3/mappers/StudentMapper.xml
不能找到StudentMapper.xml
=-=缺少一个s。。。。。
然后再更改,继续error:
org.apache.ibatis.exceptions.PersistenceException:
### Error building SqlSession.
### Cause: org.apache.ibatis.builder.
BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 22; columnNumber: 17; 元素类型为 "configuration" 的内容必须匹配 "(properties?,settings?,typeAliases?,typeHandlers?,objectFactory?,objectWrapperFactory?,reflectorFactory?,plugins?,environments?,databaseIdProvider?,mappers?)"。
应该是mapper.xml中缺少文件导致的:
导入了网址
http://blog.csdn.net/hloach/article/details/68491677
http://blog.csdn.net/yqynsmile/article/details/52807815
中的setting和properties依然error。
<?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>
<properties resource="log4j.properties"/>
<settings>
<setting name="logImpl" value="LOG4J"/>
</settings>
<settings>
<setting name="cacheEnabled" value="true"/>
</settings>
<settings>
<setting name="multipleResultSetsEnabled" value="true" />
</settings>
<settings>
<setting name="useColumnLabel" value="true" />
</settings>
<settings>
<setting name="useGeneratedKeys" value="false" />
</settings>
<settings>
<setting name="autoMappingBehavior" value="PARTIAL" />
</settings>
<settings>
<setting name="defaultStatementTimeout" value="25000" />
</settings>
<settings>
<setting name="defaultExecutorType" value="SIMPLE" />
</settings>
<settings>
<setting name="safeRowBoundsEnabled" value="false" />
</settings>
<settings>
<setting name="mapUnderscoreToCamelCase" value="false" />
</settings>
<typeAliases>
<typeAlias alias="Student" type="com.mybatis3.domain.Student" />
</typeAliases>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/mybatis1" />
<property name="username" value="root" />
<property name="password" value="Woshiainide.99" />
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="com/mybatis3/mappers/StudentMapper.xml" />
</mappers>
</configuration>
<settings>
<setting name="lazyLoadingEnabled" value="true" />//是否是懒记载
</settings>
org.apache.ibatis.exceptions.PersistenceException:
### Error building SqlSession.
### Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 56; columnNumber: 17; 元素类型为 "configuration" 的内容必须匹配 "(properties?,settings?,typeAliases?,typeHandlers?,objectFactory?,objectWrapperFactory?,reflectorFactory?,plugins?,environments?,databaseIdProvider?,mappers?)"。
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.mybatis3.util.MyBatisSqlSessionFactory.getSqlSessionFactory(MyBatisSqlSessionFactory.java:22)
at com.mybatis3.util.MyBatisSqlSessionFactory.openSession(MyBatisSqlSessionFactory.java:33)
at com.mybatis3.services.Studentservices.findAllStudents(Studentservices.java:20)
at com.mybatis3.services.StudentServiceTest.testFindAllStudents(StudentServiceTest.java:25)
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:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 56; columnNumber: 17; 元素类型为 "configuration" 的内容必须匹配 "(properties?,settings?,typeAliases?,typeHandlers?,objectFactory?,objectWrapperFactory?,reflectorFactory?,plugins?,environments?,databaseIdProvider?,mappers?)"。
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)
... 29 more
Caused by: org.xml.sax.SAXParseException; lineNumber: 56; columnNumber: 17; 元素类型为 "configuration" 的内容必须匹配 "(properties?,settings?,typeAliases?,typeHandlers?,objectFactory?,objectWrapperFactory?,reflectorFactory?,plugins?,environments?,databaseIdProvider?,mappers?)"。
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:284)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java:1994)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java:879)
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:2967)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:841)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:770)
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:339)
at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:257)
... 32 more
明日任务:
补完xxxxmapper.xml的配置,今天被bug卡死了
问题和收获:
问题在上,求师兄指导一个方向。
收获是:看的再多不如动手实在,提前看很多可以在操作的时候提供一些思路但是遇到bug仍然无法解决,所以尽快动手才是根本。
对mabits的理解更加深入了。
评论