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作者 | 正文 |
发表时间:2003-09-15
异常如下: org.dom4j.DocumentException: hibernate.sourceforge.net Nested exception: hibernate.sourceforge.net at org.dom4j.io.SAXReader.read(SAXReader.java:358) at net.sf.hibernate.cfg.Configuration.addInputStream(Configuration.java:252) at net.sf.hibernate.cfg.Configuration.addClass(Configuration.java:286) at dbdemo.HibernateDemo.run(HibernateDemo.java:53) at dbdemo.HibernateDemo.main(HibernateDemo.java:31) Nested exception: java.net.UnknownHostException: hibernate.sourceforge.net at java.net.InetAddress.getAllByName0(InetAddress.java:591) at java.net.InetAddress.getAllByName0(InetAddress.java:560) at java.net.InetAddress.getByName(InetAddress.java:469) at java.net.Socket.<init>(Socket.java:121) at sun.net.NetworkClient.doConnect(NetworkClient.java:65) at sun.net.www.http.HttpClient.openServer(HttpClient.java:361) at sun.net.www.http.HttpClient.openServer(HttpClient.java:548) at sun.net.www.http.HttpClient.<init>(HttpClient.java:296) at sun.net.www.http.HttpClient.<init>(HttpClient.java:306) at sun.net.www.http.HttpClient.New(HttpClient.java:318) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:466) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:562) at java.net.URL.openStream(URL.java:826) at org.apache.xerces.impl.XMLEntityManager.startEntity(XMLEntityManager.java:748) at org.apache.xerces.impl.XMLEntityManager.startDTDEntity(XMLEntityManager.java:708) at org.apache.xerces.impl.XMLDTDScannerImpl.setInputSource(XMLDTDScannerImpl.java:258) at org.apache.xerces.impl.XMLDocumentScannerImpl$DTDDispatcher.dispatch(XMLDocumentScannerImpl.java:833) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:333) at org.apache.xerces.parsers.StandardParserConfiguration.parse(StandardParserConfiguration.java:525) at org.apache.xerces.parsers.StandardParserConfiguration.parse(StandardParserConfiguration.java:581) at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:147) at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1158) at org.dom4j.io.SAXReader.read(SAXReader.java:339) at net.sf.hibernate.cfg.Configuration.addInputStream(Configuration.java:252) at net.sf.hibernate.cfg.Configuration.addClass(Configuration.java:286) at dbdemo.HibernateDemo.run(HibernateDemo.java:53) at dbdemo.HibernateDemo.main(HibernateDemo.java:31) MappingException hibernate.sourceforge.net Nested exception: hibernate.sourceforge.net java.lang.NullPointerException at dbdemo.HibernateDemo.run(HibernateDemo.java:172) at dbdemo.HibernateDemo.main(HibernateDemo.java:31) Exception in thread "main" Users.hbm.xml: <?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd"> <hibernate-mapping> <class name="dbdemo.Users" table="Users" dynamic-update="false" > <id name="userID" column="LogonID" type="string" unsaved-value="any" > <generator class="assigned"> </generator> </id> <property name="emailAddress" type="string" update="true" insert="true" column="EmailAddress" /> <property name="lastLogon" type="date" update="true" insert="true" column="LastLogon" /> <property name="password" type="string" update="true" insert="true" column="Password" /> <property name="userName" type="string" update="true" insert="true" column="Name" /> <set name="contacts" table="Contacts" lazy="false" inverse="false" cascade="all" sort="unsorted" > <key column="User_ID" /> <one-to-many class="dbdemo.Contact" /> </set> <set name="books" table="Book_User_Link" lazy="false" inverse="false" cascade="all" sort="unsorted" > <key column="UserID" /> <many-to-many class="dbdemo.Book" column="BookID" outer-join="auto" /> </set> <one-to-one name="address" class="dbdemo.Address" cascade="none" outer-join="auto" constrained="false" /> <!-- To add non XDoclet property mappings, create a file named hibernate-properties-User.xml containing the additional properties and place it in your merge dir. --> </class> </hibernate-mapping> 如果将文件头换成 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN" "file:///F:/hibernate-test/classes/hibernate-mapping-2.0.dtd"> 就可以了。 声明:ITeye文章版权属于作者,受法律保护。没有作者书面许可不得转载。
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发表时间:2003-09-16
你们调试程序是否都一直在线的呢?我的意思是说,如果文件头是<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd"> 的话,如果一断网,程序就会抛出异常说找不到地址hibernate.sourceforge.net,难道一定要DTD引用的吗? |
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发表时间:2003-09-16
肯定是不需要的,因为hibernate2.jar里边已经包括了这个DTD了,Hibernate的XML解析器会首先从CLASSPATH里面load,所以肯定可以load到hibernate2.jar里面的DTD文件,而不需要从网络上load
很可能是你什么地方的CLASSPATH设置的不对,搞的XML解析器找不到本地文件,只能网络上load |
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发表时间:2003-09-16
一语惊醒,不好意思,这么简单的问题,我找到问题所在了。Thanks........
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发表时间:2003-09-16
找到问题所在,就把解决过程贴出来,好让以后别人碰到问题也知道该怎么办?
不要那么藏私嘛 |
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发表时间:2003-09-17
改为
<!DOCTYPE hibernate-mapping SYSTEM "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd"> 就可以了 |
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发表时间:2003-09-17
其实是很低级的错误,因为我在工程里面使用了hibernate的源代码来编译运行,没有导入hibernate的jar,而dtd在jar里面,结果当然找不到了。
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发表时间:2003-09-18
我的系统现在也是这个样子, 不知道为什么hibernate启动的时候一定要到网络上面去找
但是我的classpath下面是有那两个mapping的啊, 我放在web-inf/classes/下面都不行 |
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