如何在Wildfly 9中启用JSP的即时编译? [英] How do I enable on-the-fly compilation of JSPs in Wildfly 9?

问题描述

我正在使用Wildfly 9.0.0.CR2.如何启用JSP的即时编译?我在另一个线程中找到了此配置

I’m using Wildfly 9.0.0.CR2. How do I enable on-the-fly compilation of JSPs? I found this configuration in another thread

    <subsystem xmlns="urn:jboss:domain:web:1.4" default-virtual-server="default-host" native="false">
        <configuration>
            <jsp-configuration development="true" check-interval="1" modification-test-interval="1" recompile-on-fail="true"/>
        </configuration>
    </subsystem>

但是可惜，它不起作用，当我重新启动JBoss服务器时会导致杜松子酒出现以下异常……

but alas, it doesn’t work, result in gin the below exception when I restart my JBoss server …

    14:23:05,224 ERROR [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0055: Caught exception during boot: org.jboss.as.controller.persistence.ConfigurationPersistenceException: WFLYCTL0085: Failed to parse configuration
        at org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:131)
        at org.jboss.as.server.ServerService.boot(ServerService.java:350)
        at org.jboss.as.controller.AbstractControllerService$1.run(AbstractControllerService.java:271)
        at java.lang.Thread.run(Thread.java:745)
    Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[442,2]
Message: Unexpected element '{urn:jboss:domain:web:1.4}subsystem'
        at org.jboss.staxmapper.XMLMapperImpl.processNested(XMLMapperImpl.java:108)
        at org.jboss.staxmapper.XMLExtendedStreamReaderImpl.handleAny(XMLExtendedStreamReaderImpl.java:69)
        at org.jboss.as.server.parsing.StandaloneXml.parseServerProfile(StandaloneXml.java:1199)
        at org.jboss.as.server.parsing.StandaloneXml.readServerElement_1_4(StandaloneXml.java:457)
        at org.jboss.as.server.parsing.StandaloneXml.readElement(StandaloneXml.java:144)
        at org.jboss.as.server.parsing.StandaloneXml.readElement(StandaloneXml.java:106)
        at org.jboss.staxmapper.XMLMapperImpl.processNested(XMLMapperImpl.java:110)
        at org.jboss.staxmapper.XMLMapperImpl.parseDocument(XMLMapperImpl.java:69)
        at org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:123)
        ... 3 more

推荐答案

这是XML解析问题，此错误消息javax.xml.stream.XMLStreamException: ParseError显而易见.此特定行Unexpected element{urn:jboss:domain:web:1.4}subsystem的解析失败.

This is a XML parsing issue as evident by this error message javax.xml.stream.XMLStreamException: ParseError. The parsing failed for this particular line Unexpected element{urn:jboss:domain:web:1.4}subsystem.

您可以查看XML模式文档以找出这些类型的XML解析问题.模式位于WildFly的docs文件夹下.

You can look at the XML schema documents to figure out these types of XML parsing issues. The schemas are located under the docs folder of WildFly.

通过这种方式，您应该使用WildFly-9.0.1.Final构建版本，因为这是最新发行的候选版本.

By the way you should use WildFly-9.0.1.Final build version as that is the latest release candidate build.

您很可能需要对下拖子系统进行更改.我更新了以下示例:

You will most likely need to make the changes to the undertow subsystem. I have updated an example below:

 <subsystem xmlns="urn:jboss:domain:undertow:2.0">
            <buffer-cache name="default"/>
            <server name="default-server">
                <http-listener name="default" socket-binding="http" redirect-socket="https"/>
                <host name="default-host" alias="localhost">
                    <location name="/" handler="welcome-content"/>
                    <filter-ref name="server-header"/>
                    <filter-ref name="x-powered-by-header"/>
                </host>
            </server>
            <servlet-container name="default">
                <jsp-config development="true" check-interval="1" modification-test-interval="1" recompile-on-fail="true"/>
                <websockets/>
            </servlet-container>
            <handlers>
                <file name="welcome-content" path="${jboss.home.dir}/welcome-content"/>
            </handlers>
            <filters>
                <response-header name="server-header" header-name="Server" header-value="WildFly/9"/>
                <response-header name="x-powered-by-header" header-name="X-Powered-By" header-value="Undertow/1"/>
            </filters>
        </subsystem>

我强烈建议您使用CLI进行此类更改:

I highly recommend using CLI to make such changes:

/subsystem=undertow/servlet-container=default/setting=jsp:write-attribute(name=development,value=true)
/subsystem=undertow/servlet-container=default/setting=jsp:write-attribute(name=recompile-on-fail,value=true)
/subsystem=undertow/servlet-container=default/setting=jsp:write-attribute(name=check-interval,value=1)
/subsystem=undertow/servlet-container=default/setting=jsp:write-attribute(name=modification-test-interval,value=1)

这样，您可以避免这些XML解析错误，而不必查找确切的XML模式.

This way you can avoid these XML parsing errors without having to find the exact XML schemas.

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