Caused by: org.xml.sax.SAXParseException; lineNumber: 128; columnNumber: 31; 在实体引用中, 实体名称必须紧跟在 '&' 后

朱雀 2022-05-22 07:29 229阅读 0赞

java.lang.ExceptionInInitializerError  
    at com.qfedu.mybatis.test.testSelectUser.testSelectUserByCondition(testSelectUser.java:257)  
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)  
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)  
    at java.lang.reflect.Method.invoke(Method.java:606)  
    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.runners.ParentRunner.run(ParentRunner.java:363)  
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)  
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)  
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)  
Caused by: org.apache.ibatis.exceptions.PersistenceException:  
\#\#\# Error building SqlSession.  
\#\#\# The error may exist in com/qfedu/mybatis/mapper/UserMapper.java (best guess)  
\#\#\# 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: 128; columnNumber: 31; 在实体引用中, 实体名称必须紧跟在 '&' 后面。  
    at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23)  
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:79)  
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:63)  
    at com.qfedu.mybatis.utils.MyBatisUtil.<clinit>(MyBatisUtil.java:18)  
    ... 24 more  
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: 128; columnNumber: 31; 在实体引用中, 实体名称必须紧跟在 '&' 后面。  
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:106)  
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:89)  
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:77)  
    ... 26 more  
Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException; lineNumber: 128; columnNumber: 31; 在实体引用中, 实体名称必须紧跟在 '&' 后面。  
    at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:253)  
    at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:122)  
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.<init>(XMLMapperBuilder.java:74)  
    at org.apache.ibatis.builder.xml.XMLMapperBuilder.<init>(XMLMapperBuilder.java:69)  
    at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.loadXmlResource(MapperAnnotationBuilder.java:158)  
    at org.apache.ibatis.builder.annotation.MapperAnnotationBuilder.parse(MapperAnnotationBuilder.java:113)  
    at org.apache.ibatis.binding.MapperRegistry.addMapper(MapperRegistry.java:66)  
    at org.apache.ibatis.binding.MapperRegistry.addMappers(MapperRegistry.java:91)  
    at org.apache.ibatis.binding.MapperRegistry.addMappers(MapperRegistry.java:99)  
    at org.apache.ibatis.session.Configuration.addMappers(Configuration.java:631)  
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:308)  
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:104)  
    ... 28 more  
Caused by: org.xml.sax.SAXParseException; lineNumber: 128; columnNumber: 31; 在实体引用中, 实体名称必须紧跟在 '&' 后面。  
    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.scanAttributeValue(XMLScanner.java:885)  
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanAttribute(XMLDocumentFragmentScannerImpl.java:1547)  
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1319)  
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2786)  
    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)  
    ... 39 more

在学习mybatis时，测试用例出现了该异常，找了很长一段时间没找到，然后对照学习视频资料，才发现这里写错了，以作为记录。

错误源码如下：

<select id="selectUserByCondition" parameterType="User" resultMap="userResultMapper">
            select * from user_c
            <where>
                <if test="userName !=null && userName !=''">
                    user_name = #{userName}
                </if>
                <if test="address !=null && address !=''">
                    and lower(address) like lower(#{address})
                </if>
                <if test="deptId !=null">
                    and dept_id = #{deptId}
                </if>
            </where>
        </select>

正确代码应为如下：将&& 替换为 and （PS:拼写&&习惯了，因此这地方容易写错，已经写错好几次了）

<select id="selectUserByCondition" parameterType="User" resultMap="userResultMapper">
    		select * from user_c
    		<where>
    			<if test="userName !=null and userName !=''">
    				user_name = #{userName}
    			</if>
    			<if test="address !=null and address !=''">
    				and lower(address) like lower(#{address})
    			</if>
    			<if test="deptId !=null">
    				and dept_id = #{deptId}
    			</if>
    		</where>
    	</select>