Java 通过JAXB生成的工件无法解析log.xml
我正在尝试使用Java 通过JAXB生成的工件无法解析log.xml,java,jaxb,log4j,Java,Jaxb,Log4j,我正在尝试使用JAXB为log4jXML解析生成工件。我正在使用dtd 和内联log.xml。我越来越不正常了。我是所有这些技术的新手。请有人帮我解决这个问题 线程“main”中出现异常 javax.xml.bind.UnmarshaleException： 意外元素 （uri:）http://jakarta.apache.org/log4j/", 本地：“配置”）。预期 元素是 ,,,,,,,,,,,,,,,,,,,, 在 com.sun.xml.internal.bind.v2.runti
JAXBlog4j<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration debug="false" xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="ASYNC" class="org.apache.log4j.AsyncAppender">
<appender-ref ref="DEFAULT"/>
</appender>
<appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-5p %c %x- %m%n"/>
</layout>
</appender>
<appender name="DEFAULT" class="org.apache.log4j.RollingFileAppender">
<param name="File" value="/home/default.log" />
<param name="Append" value="true" />
<param name="maxFileSize" value="10MB" />
<param name="maxBackupIndex" value="2" />
<param name="encoding" value="UTF-8" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-5p %c %x- %m%n"/>
</layout>
</appender>
<appender name="DB_EXCEP" class="org.apache.log4j.FileAppender">
<param name="File" value="/home/db_exception.log" />
<param name="Append" value="true" />
<param name="encoding" value="UTF-8" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-5p %c %x- %m%n"/>
</layout>
</appender>
<category name="com.common.db.ScriptRunner" additivity="false">
<priority value="info" />
<appender-ref ref="DB_EXCEP" />
</category>
<category name="com.common.appsvr.current.admin" additivity="false">
<priority value="info"/>
<appender-ref ref="DEFAULT"/>
</category>
<!-- ROOT CATEGORY -->
<root>
<priority value="debug"/>
<appender-ref ref="DEFAULT"/>
<!-- <appender-ref ref="STDOUT"/> -->
</root>
</log4j:configuration>
更新 我原来的答案出现问题是因为你的问题中有格式错误。最初根元素不可见（现已更正），因此我认为您提供了7个示例文档，而不是一个包含7个子元素的文档：） log4j.dtd使用冒号定义元素名称，如果其底层解析器设置为namespace-aware，则会混淆JAXB实现，因为它认为元素
log4j:configurationconfiguration中名为configuration
的元素http://jakarta.apache.org/log4j/package log4j;
import java.io.FileInputStream;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.UnmarshallerHandler;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;
public class Demo {
public static void main(String[] args) throws Exception {
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
JAXBContext jc = JAXBContext.newInstance("log4j");
Unmarshaller unmarshaller = jc.createUnmarshaller();
UnmarshallerHandler unmarshallerHandler = unmarshaller.getUnmarshallerHandler();
xr.setContentHandler(unmarshallerHandler);
FileInputStream xmlStream = new FileInputStream("src/log4j/file1.xml");
InputSource xmlSource = new InputSource(xmlStream);
xr.parse(xmlSource);
Log4JConfiguration config = (Log4JConfiguration) unmarshallerHandler.getResult();
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(config, System.out);
}
}
以下是我所做的工作： 获取log4j.dtd 从中，我注意到有3个log4j.dtd文件，我使用的是：
<log4j_home>/source/main/resources/org/apache/log4j/xml
log4jJAXBContext jc = JAXBContext.newInstance("log4j");
import java.io.File;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance("log4j");
processXML(jc,"src/log4j/file1.xml");
processXML(jc,"src/log4j/file2.xml");
processXML(jc,"src/log4j/file3.xml");
processXML(jc,"src/log4j/file4.xml");
processXML(jc,"src/log4j/file5.xml");
processXML(jc,"src/log4j/file6.xml");
processXML(jc,"src/log4j/file7.xml");
}
private static void processXML(JAXBContext jc, String fileName) throws Exception {
Unmarshaller unmarshaller = jc.createUnmarshaller();
Object o = unmarshaller.unmarshal(new File(fileName));
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(o, System.out);
}
}
导入javax.xml.bind.*；导入java.io.*；导入java.util.*；导入log4j.*；公共类Me{public static void main（字符串args[]）引发异常{JAXBContext js=JAXBContext.newInstance（“log4j”）；Unmarshaller u=js.createUnmarshaller（）；Object xmlConf=u.unmarshal（新文件（“log.xml”）；Marshaller m=js.createMarshaller（）；m.setProperty（Marshaller.JAXB_格式化的_输出，Boolean.TRUE）；m.marshal（xmlConf，newfileoutputstream（“out.xml”）；}
import java.io.File;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance("log4j");
processXML(jc,"src/log4j/file1.xml");
processXML(jc,"src/log4j/file2.xml");
processXML(jc,"src/log4j/file3.xml");
processXML(jc,"src/log4j/file4.xml");
processXML(jc,"src/log4j/file5.xml");
processXML(jc,"src/log4j/file6.xml");
processXML(jc,"src/log4j/file7.xml");
}
private static void processXML(JAXBContext jc, String fileName) throws Exception {
Unmarshaller unmarshaller = jc.createUnmarshaller();
Object o = unmarshaller.unmarshal(new File(fileName));
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(o, System.out);
}
}