java 未找到 SAX2 驱动程序类

SAX2 driver class not found

提问by Skizzo

I'm developing a java web app that uses Jasper report to show some report. Now some version changes at my depencencies I'm getting the following error:

我正在开发一个 Java Web 应用程序，它使用 Jasper 报告来显示一些报告。现在我的依赖项中的一些版本发生了变化，我收到以下错误：

net.sf.jasperreports.engine.JRRuntimeException: java.io.IOException: SAX2 driver class org.apache.xerces.parsers.SAXParser not found
at net.sf.jasperreports.renderers.BatikRenderer.ensureSvg(BatikRenderer.java:229)
at net.sf.jasperreports.renderers.BatikRenderer.ensureSvg(BatikRenderer.java:239)
at net.sf.jasperreports.renderers.BatikRenderer.getDimension(BatikRenderer.java:157)
at net.sf.jasperreports.engine.export.JRPdfExporter.exportImage(JRPdfExporter.java:1434)
at net.sf.jasperreports.engine.export.JRPdfExporter.exportElements(JRPdfExporter.java:854)
at net.sf.jasperreports.engine.export.JRPdfExporter.exportPage(JRPdfExporter.java:818)
at net.sf.jasperreports.engine.export.JRPdfExporter.exportReportToStream(JRPdfExporter.java:695)
at net.sf.jasperreports.engine.export.JRPdfExporter.exportReport(JRPdfExporter.java:396)
at net.sf.jasperreports.engine.JasperExportManager.exportToPdfStream(JasperExportManager.java:191)
at net.sf.jasperreports.engine.JasperExportManager.exportReportToPdfStream(JasperExportManager.java:527)

I think that the error could be due from build path. This is my dependency tree:

我认为错误可能是由于构建路径造成的。这是我的依赖树：

    [INFO] ------------------------------------------------------------------------
[INFO] Building vaadin-webapp-billing 2.3.7-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ vaadin-webapp-billing ---
[INFO] it.mycompany:vaadin-webapp-billing:war:2.3.7-SNAPSHOT
[INFO] +- it.mycompany:services-billing:jar:2.3.7-SNAPSHOT:compile
[INFO] |  +- it.mycompany:util-billing:jar:2.3.7-SNAPSHOT:compile
[INFO] |  |  +- it.mycompany:model-billing:jar:2.3.7-SNAPSHOT:compile
[INFO] |  |  |  +- org.eclipse.persistence:org.eclipse.persistence.jpa:jar:2.5.1:compile
[INFO] |  |  |  |  +- org.eclipse.persistence:javax.persistence:jar:2.1.0:compile
[INFO] |  |  |  |  +- org.eclipse.persistence:org.eclipse.persistence.asm:jar:2.5.1:compile
[INFO] |  |  |  |  +- org.eclipse.persistence:org.eclipse.persistence.antlr:jar:2.5.1:compile
[INFO] |  |  |  |  +- org.eclipse.persistence:org.eclipse.persistence.jpa.jpql:jar:2.5.1:compile
[INFO] |  |  |  |  \- org.eclipse.persistence:org.eclipse.persistence.core:jar:2.5.1:compile
[INFO] |  |  |  +- org.eclipse.persistence:eclipselink:jar:2.5.1:compile
[INFO] |  |  |  |  \- org.eclipse.persistence:commonj.sdo:jar:2.1.1:compile
[INFO] |  |  |  \- com.oracle:ojdbc14:jar:14.0.0:compile
[INFO] |  |  +- org.apache.poi:poi-ooxml:jar:3.7:compile
[INFO] |  |  |  +- org.apache.poi:poi:jar:3.7:compile
[INFO] |  |  |  +- org.apache.poi:poi-ooxml-schemas:jar:3.7:compile
[INFO] |  |  |  |  \- org.apache.xmlbeans:xmlbeans:jar:2.3.0:compile
[INFO] |  |  |  \- dom4j:dom4j:jar:1.6.1:compile
[INFO] |  |  +- com.lowagie:itext:jar:2.1.7.js1:compile
[INFO] |  |  \- it.mycompany:vaadin-common-component:jar:1.0.0:compile
[INFO] |  |     \- org.springframework.data:spring-data-jpa:jar:1.2.0.RELEASE:compile
[INFO] |  |        +- org.springframework.data:spring-data-commons-core:jar:1.4.0.RELEASE:compile
[INFO] |  |        \- org.slf4j:jcl-over-slf4j:jar:1.6.1:runtime
[INFO] |  +- org.springframework:spring-aop:jar:4.1.4.RELEASE:compile
[INFO] |  |  \- aopalliance:aopalliance:jar:1.0:compile
[INFO] |  +- org.springframework:spring-aspects:jar:4.1.4.RELEASE:compile
[INFO] |  |  \- org.aspectj:aspectjweaver:jar:1.8.4:compile
[INFO] |  +- org.springframework:spring-beans:jar:4.1.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-context:jar:4.1.4.RELEASE:compile
[INFO] |  |  \- org.springframework:spring-expression:jar:4.1.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-context-support:jar:4.1.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-core:jar:4.1.4.RELEASE:compile
[INFO] |  |  \- commons-logging:commons-logging:jar:1.2:compile
[INFO] |  +- org.springframework:spring-jdbc:jar:4.1.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-orm:jar:4.1.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-tx:jar:4.1.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-web:jar:4.1.4.RELEASE:compile
[INFO] |  +- org.aspectj:aspectjrt:jar:1.7.1:compile
[INFO] |  +- org.aspectj:aspectjtools:jar:1.7.1:compile
[INFO] |  +- net.sf.jasperreports:jasperreports:jar:5.0.0:compile
[INFO] |  |  +- commons-beanutils:commons-beanutils:jar:1.8.0:compile
[INFO] |  |  +- commons-digester:commons-digester:jar:2.1:compile
[INFO] |  |  +- jfree:jcommon:jar:1.0.15:compile
[INFO] |  |  +- jfree:jfreechart:jar:1.0.12:compile
[INFO] |  |  +- xml-apis:xml-apis:jar:1.3.02:compile
[INFO] |  |  +- org.codehaus.castor:castor:jar:1.2:compile
[INFO] |  |  +- com.fasterxml.Hymanson.core:Hymanson-core:jar:2.0.5:compile
[INFO] |  |  +- com.fasterxml.Hymanson.core:Hymanson-databind:jar:2.0.5:compile
[INFO] |  |  \- com.fasterxml.Hymanson.core:Hymanson-annotations:jar:2.0.5:compile
[INFO] |  +- net.sf.jasperreports:jasperreports-fonts:jar:4.0.0:compile
[INFO] |  +- commons-io:commons-io:jar:2.4:compile
[INFO] |  +- net.sf.barcode4j:barcode4j:jar:2.1:compile
[INFO] |  |  +- avalon-framework:avalon-framework-impl:jar:4.2.0:compile
[INFO] |  |  +- commons-cli:commons-cli:jar:1.0:compile
[INFO] |  |  \- org.apache.ant:ant:jar:1.7.1:compile
[INFO] |  |     \- org.apache.ant:ant-launcher:jar:1.7.1:compile
[INFO] |  +- org.codehaus.groovy:groovy-all:jar:2.2.1:compile
[INFO] |  +- it.mycompany.fonts:custom-fonts-jasper:jar:1.0:compile
[INFO] |  +- net.sourceforge.barbecue:barbecue:jar:1.5-beta1:compile
[INFO] |  +- batik:batik-bridge:jar:1.6-1:compile
[INFO] |  |  +- batik:batik-gvt:jar:1.6-1:compile
[INFO] |  |  |  \- batik:batik-awt-util:jar:1.6-1:compile
[INFO] |  |  |     \- batik:batik-util:jar:1.6-1:compile
[INFO] |  |  |        \- batik:batik-gui-util:jar:1.6-1:compile
[INFO] |  |  |           \- batik:batik-ext:jar:1.6-1:compile
[INFO] |  |  |              \- xml-apis:xmlParserAPIs:jar:2.0.2:compile
[INFO] |  |  +- batik:batik-script:jar:1.6-1:compile
[INFO] |  |  |  \- rhino:js:jar:1.5R4.1:compile
[INFO] |  |  \- batik:batik-svg-dom:jar:1.6-1:compile
[INFO] |  |     +- batik:batik-dom:jar:1.6-1:compile
[INFO] |  |     |  +- batik:batik-css:jar:1.6-1:compile
[INFO] |  |     |  \- batik:batik-xml:jar:1.6-1:compile
[INFO] |  |     \- batik:batik-parser:jar:1.6-1:compile
[INFO] |  +- xerces:xercesImpl:jar:2.9.0:compile
[INFO] |  +- org.springframework.data:spring-data-jdbc-core:jar:1.0.0.RELEASE:compile
[INFO] |  |  \- org.springframework.retry:spring-retry:jar:1.0.0.RELEASE:compile
[INFO] |  +- org.springframework.data:spring-data-oracle:jar:1.0.0.RELEASE:compile
[INFO] |  +- com.google.collections:google-collections:jar:1.0:compile
[INFO] |  +- net.sf.opencsv:opencsv:jar:2.0:compile
[INFO] |  +- it.mycompany:csv-validator:jar:1.0.0:compile
[INFO] |  +- javax.mail:mail:jar:1.4.7:compile
[INFO] |  |  \- javax.activation:activation:jar:1.1:compile
[INFO] |  +- com.sun.xml.bind:jaxb-xjc:jar:2.2.5:compile
[INFO] |  \- commons-collections:commons-collections:jar:3.2.1:compile
[INFO] +- com.vaadin:vaadin-bom:pom:7.5.5:import
[INFO] +- com.vaadin:vaadin-client:jar:7.5.5:provided
[INFO] |  +- com.vaadin:vaadin-shared:jar:7.5.5:compile
[INFO] |  |  +- com.vaadin.external.flute:flute:jar:1.3.0.gg2:compile
[INFO] |  |  +- com.vaadin.external.streamhtmlparser:streamhtmlparser-jsilver:jar:0.0.10.vaadin1:compile
[INFO] |  |  \- com.vaadin.external.google:guava:jar:16.0.1.vaadin1:compile
[INFO] |  +- org.w3c.css:sac:jar:1.3:compile
[INFO] |  +- javax.validation:validation-api:jar:1.0.0.GA:provided
[INFO] |  \- javax.validation:validation-api:jar:sources:1.0.0.GA:provided
[INFO] +- com.vaadin:vaadin-server:jar:7.5.5:compile
[INFO] |  +- com.vaadin:vaadin-sass-compiler:jar:0.9.12:compile
[INFO] |  \- org.jsoup:jsoup:jar:1.8.1:compile
[INFO] +- com.vaadin:vaadin-themes:jar:7.5.5:compile
[INFO] +- org.vaadin.addon:easyuploads:jar:7.4.2:compile
[INFO] |  \- org.vaadin:viritin:jar:1.35:compile
[INFO] |     +- org.vaadin.addon:confirmdialog:jar:2.1.2:compile
[INFO] |     +- org.commonjava.googlecode.markdown4j:markdown4j:jar:2.2-cj-1.0:compile
[INFO] |     +- org.apache.commons:commons-lang3:jar:3.3.2:compile
[INFO] |     \- javax.el:javax.el-api:jar:2.2.4:compile
[INFO] +- org.vaadin.addons:wizards-for-vaadin:jar:1.1.0:compile
[INFO] +- org.vaadin.addons:filteringtable:jar:0.9.13.v7:compile
[INFO] |  \- org.vaadin.addons:popupbutton:jar:2.5.0:compile
[INFO] +- com.vaadin:vaadin-push:jar:7.5.5:compile
[INFO] |  \- com.vaadin.external.atmosphere:atmosphere-runtime:jar:2.2.7.vaadin1:compile
[INFO] |     \- com.vaadin.external.slf4j:vaadin-slf4j-jdk14:jar:1.6.1:compile
[INFO] +- com.vaadin.addon:vaadin-charts:jar:1.1.7:compile
[INFO] |  \- com.google.code.gson:gson:jar:2.2:compile
[INFO] +- ru.xpoft.vaadin:spring-vaadin-integration:jar:3.1:compile
[INFO] |  \- org.slf4j:slf4j-api:jar:1.7.7:compile
[INFO] +- javax.servlet:javax.servlet-api:jar:3.0.1:provided
[INFO] +- org.iban4j:iban4j:jar:2.1.1:compile
[INFO] \- com.google.code.maven-scm-provider-svnjava:maven-scm-provider-svnjava:jar:2.0.6:compile
[INFO]    +- org.apache.maven.scm:maven-scm-provider-svn-commons:jar:1.8:compile
[INFO]    |  \- org.apache.maven.scm:maven-scm-api:jar:1.8:compile
[INFO]    +- org.tmatesoft.svnkit:svnkit:jar:1.7.8:compile
[INFO]    |  +- org.tmatesoft.sqljet:sqljet:jar:1.1.6:compile
[INFO]    |  |  \- org.antlr:antlr-runtime:jar:3.4:compile
[INFO]    |  +- de.regnis.q.sequence:sequence-library:jar:1.0.2:compile
[INFO]    |  \- com.trilead:trilead-ssh2:jar:1.0.0-build215:compile
[INFO]    +- net.java.dev.jna:jna:jar:3.2.2:compile
[INFO]    +- org.codehaus.plexus:plexus-utils:jar:3.0.14:compile
[INFO]    \- commons-lang:commons-lang:jar:2.6:compile

Can you give me some suggestion about this error?

你能给我一些关于这个错误的建议吗？

回答by Petter Friberg

It surely has to do with xerces hell..., I see you have the xercesImpl.jaron classpath that has this class, but you got also other libraries including this class as xmlParserAPIs.jar, try to remove one of them I would remove the xercesImpl.jar.

它肯定与 xerces 地狱有关......，我看到你有xercesImpl.jar这个类的类路径，但你也有其他库，包括这个类 as xmlParserAPIs.jar，尝试删除其中一个我会删除xercesImpl.jar.

Check out this... Dealing with "Xerces hell" in Java/Maven?

看看这个……在 Java/Maven 中处理“Xerces 地狱”？

回答by abarisone

The SAX2 driver class org.apache.xerces.parsers.SAXParseris located into xerces-2.9.0.jarfile.

SAX2 驱动程序类org.apache.xerces.parsers.SAXParser位于xerces-2.9.0.jar文件中。

Check if it is in your classpath when you're launching your web application and, if not present, simply add it.

在您启动 Web 应用程序时检查它是否在您的类路径中，如果不存在，只需添加它。

Also check if some of the dependencies you have included have to be declared as provided, meaning that they are already present in your application server lib folder, since there could be a version conflict.

还要检查您包含的某些依赖项是否必须声明为provided，这意味着它们已经存在于您的应用程序服务器 lib 文件夹中，因为可能存在版本冲突。