Maven项目 引入依赖即可。
<!-- https://mvnrepository.com/artifact/xml-apis/xml-apis --> <dependency> <groupId>xml-apis</groupId> <artifactId>xml-apis</artifactId> <version>1.4.01</version> </dependency>Gradle在引入"xml-apis:xml-apis:1.4.01"依赖时，始终无法正常引入，需引入解决策略
configurations.all { resolutionStrategy { force 'xml-apis:xml-apis:1.4.01' } }我本人使用gradle构建项目，引入如下
configurations { compile.exclude group: "ch.qos.logback" compile.exclude group: "org.springframework.boot", module: "spring-boot-starter-logging" compile.exclude group: "org.springframework.boot", module: "spring-boot-starter-tomcat" compile.exclude group: "org.apache.tomcat", module: "tomcat-jdbc" compile.exclude group: "com.zaxxer", module: "HikariCP-java7" all { resolutionStrategy { force 'xml-apis:xml-apis:1.4.01' } } }贴出报错图
Exception in thread "main" java.lang.NoClassDefFoundError: org/w3c/dom/ElementTraversal at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:763) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:468) at java.net.URLClassLoader.access$100(URLClassLoader.java:74) at java.net.URLClassLoader$1.run(URLClassLoader.java:369) at java.net.URLClassLoader$1.run(URLClassLoader.java:363) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:362) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.apache.xerces.parsers.AbstractDOMParser.startDocument(Unknown Source) at org.apache.xerces.xinclude.XIncludeHandler.startDocument(Unknown Source) at org.apache.xerces.impl.dtd.XMLDTDValidator.startDocument(Unknown Source) at org.apache.xerces.impl.XMLDocumentScannerImpl.startEntity(Unknown Source) at org.apache.xerces.impl.XMLVersionDetector.startDocumentParsing(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.DOMParser.parse(Unknown Source) at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source) at org.apache.logging.log4j.core.config.xml.XmlConfiguration.<init>(XmlConfiguration.java:95) at org.apache.logging.log4j.core.config.xml.XmlConfigurationFactory.getConfiguration(XmlConfigurationFactory.java:46) at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:454) at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:386) at org.apache.logging.log4j.core.config.ConfigurationFactory.getConfiguration(ConfigurationFactory.java:261) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:616) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:637) at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:231) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:153) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45) at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194) at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:121) at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:43) at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:46) at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:358) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383) at us.codecraft.webmagic.scheduler.DuplicateRemovedScheduler.<init>(DuplicateRemovedScheduler.java:19) at us.codecraft.webmagic.scheduler.QueueScheduler.<init>(QueueScheduler.java:19) at us.codecraft.webmagic.Spider.<init>(Spider.java:75) at us.codecraft.webmagic.Spider.create(Spider.java:119) at com.amazon.common.utils.spider.AmanzonPageProcessor.main(AmanzonPageProcessor.java:43) Caused by: java.lang.ClassNotFoundException: org.w3c.dom.ElementTraversal at java.net.URLClassLoader.findClass(URLClassLoader.java:382) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 44 more
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