一个初学Ibatis的问题

[真不爱学习]

按照ibatis例子做得一个练习。
出现的错误查不到了，麻烦各位高手帮忙看下

package com.itcast;

import java.io.Reader;
import java.util.List;

import com.ibatis.sqlmap.client.SqlMapClient;

public class IStudentDAOImpl implements IStudentDAO {
	
	private static SqlMapClient sqlMapClient=null;
	static{
		try {
			Reader reader = com.ibatis.common.resources.Resources.getResourceAsReader("com/itcast/SqlMapConfig.xml");
			sqlMapClient = com.ibatis.sqlmap.client.SqlMapClientBuilder.buildSqlMapClient(reader);
			reader.close();
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		
	}
	public void addStudent(Student student) {
		// TODO Auto-generated method stub

	}

	public List<Student> queryAllStudnet() {
		// TODO Auto-generated method stub
		List<Student> StudentList =null;
		try {
			StudentList = sqlMapClient.queryForList("selectAllStudent");
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		return StudentList;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		IStudentDAO dao=new IStudentDAOImpl();
		for(Student student:dao.queryAllStudnet()){
			System.out.println(student);
		}

	}

}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMapConfig
PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-config-2.dtd">
<sqlMapConfig>
<properties resource="com/itcast/SqlMap.properties"/>
<transactionManager type="JDBC">
<dataSource type="SIMPLE">
<property value="${driver}" name="JDBC.Driver"/>
<property value="${url}" name="JDBC.ConnectionURL"/>
<property value="${username}" name="JDBC.Username"/>
<property value="${password}" name="JDBC.Password"/>
</dataSource>
</transactionManager>
<sqlMap resource="com/itcast/student.xml" />
</sqlMapConfig>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-2.dtd">
<sqlMap>
<typeAlias alias="Studnet" type="com.itcast.Student"/>
<select id="selectAllStudent" resultClass="Student">
select * from TB_USER
</select>

</sqlMap>

[真不爱学习]

java.lang.RuntimeException: Error occurred. Cause: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: java.lang.RuntimeException: Error parsing XPath '/sqlMapConfig/sqlMap'. Cause: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: org.xml.sax.SAXParseException: Element type "select" must be declared.
at com.ibatis.sqlmap.engine.builder.xml.SqlMapConfigParser.parse(SqlMapConfigParser.java:89)
at com.ibatis.sqlmap.client.SqlMapClientBuilder.buildSqlMapClient(SqlMapClientBuilder.java:63)
at com.itcast.IStudentDAOImpl.<clinit>(IStudentDAOImpl.java:14)
Caused by: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: java.lang.RuntimeException: Error parsing XPath '/sqlMapConfig/sqlMap'. Cause: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: org.xml.sax.SAXParseException: Element type "select" must be declared.
at com.ibatis.common.xml.NodeletParser.parse(NodeletParser.java:53)
at com.ibatis.sqlmap.engine.builder.xml.SqlMapConfigParser.parse(SqlMapConfigParser.java:86)
... 2 more
Caused by: java.lang.RuntimeException: Error parsing XPath '/sqlMapConfig/sqlMap'. Cause: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: org.xml.sax.SAXParseException: Element type "select" must be declared.
at com.ibatis.common.xml.NodeletParser.processNodelet(NodeletParser.java:123)
at com.ibatis.common.xml.NodeletParser.process(NodeletParser.java:84)
at com.ibatis.common.xml.NodeletParser.process(NodeletParser.java:102)
at com.ibatis.common.xml.NodeletParser.parse(NodeletParser.java:72)
at com.ibatis.common.xml.NodeletParser.parse(NodeletParser.java:51)
... 3 more
Caused by: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: org.xml.sax.SAXParseException: Element type "select" must be declared.
at com.ibatis.common.xml.NodeletParser.parse(NodeletParser.java:53)
at com.ibatis.sqlmap.engine.builder.xml.SqlMapParser.parse(SqlMapParser.java:51)
at com.ibatis.sqlmap.engine.builder.xml.SqlMapConfigParser$11.process(SqlMapConfigParser.java:410)
at com.ibatis.common.xml.NodeletParser.processNodelet(NodeletParser.java:121)
... 7 more
Caused by: org.xml.sax.SAXParseException: Element type "select" must be declared.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleStartElement(XMLDTDValidator.java:1929)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(XMLDTDValidator.java:764)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1359)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2747)
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:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
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:107)
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:225)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283)
at com.ibatis.common.xml.NodeletParser.createDocument(NodeletParser.java:157)
at com.ibatis.common.xml.NodeletParser.parse(NodeletParser.java:50)
... 10 more
java.lang.NullPointerException
at com.itcast.IStudentDAOImpl.queryAllStudnet(IStudentDAOImpl.java:31)
at com.itcast.IStudentDAOImpl.main(IStudentDAOImpl.java:45)
Exception in thread "main" java.lang.NullPointerException
at com.itcast.IStudentDAOImpl.main(IStudentDAOImpl.java:45)

[forgetsam]

把com/itcast/student.xml里面的空格回车什么的都删掉，重新敲一遍。

[luweipo]

<typeAlias alias="Studnet" type="com.itcast.Student"/>这个的alias的Student，你写成了Studnet

[Alex0527]

写代码的时候认真些就不会有这样的问题了。