Question

我目前正在开展一个maven项目，但每当我尝试部署我的战争时，我都会得到以下例外：

ERROR [DispatcherPortlet:276] Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.context.weaving.AspectJWeavingEnabler#0': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loadTimeWeaver': Initialization of bean failed;  nested exception is java.lang.IllegalStateException: ClassLoader [org.apache.catalina.loader.WebappClassLoader] does NOT provide an 'addTransformer(ClassFileTransforme r)' method. Specify a custom LoadTimeWeaver or start your Java virtual machine with Spring's agent: -javaagent:org.springframework.instrument.jar
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
        at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1097)
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:661)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:446)
        at org.springframework.web.portlet.FrameworkPortlet.createPortletApplicationContext(FrameworkPortlet.java:356)
        at org.springframework.web.portlet.FrameworkPortlet.initPortletApplicationContext(FrameworkPortlet.java:294)
        at org.springframework.web.portlet.FrameworkPortlet.initPortletBean(FrameworkPortlet.java:268)
        at org.springframework.web.portlet.GenericPortletBean.init(GenericPortletBean.java:120)

我根本不明白我什么时候有适当的原因为什么会出现这个错误。请在POM.xml中查看我的声明

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.4</version>
    <configuration>
            <forkMode>once</forkMode>
            <argLine>
                 -javaagent:"path\spring-instrument-3.1.0.RELEASE.jar"
            </argLine>
            <useSystemClassloader>true</useSystemClassloader>
    </configuration>
</plugin>

请指导。

Answer 1

如果您正在使用tomcat bundle并在Tomcat中启用load-time-weaving，请将Spring Instrument Tomcat添加到Tomcat的lib目录以及context.xml内META-INF内的<Context path="/test"> <Loader loaderClass="org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader"/> </Context> tomcat的目录：

    Filter filter = new Filter(getContext()) {
        @Override
        protected int beforeHandle(Request request, Response response) {
            try {
                JsonRepresentation jrep = new JsonRepresentation(request.getEntity());
                JSONObject jo = jrep.getJsonObject();
                String token = jo.getString("token");
                System.out.println(token);
                request.setEntity(new JsonRepresentation(jo));
            } catch (JSONException | IOException e) {
                throw new ResourceException(Status.SERVER_ERROR_INTERNAL);
            }

            return super.beforeHandle(request, response);
        }
    };

请参阅tomcat配置中的Spring Docs。

注意：tomcat的配置因版本而异。

Answer 2

虽然长时间回答这个问题，但我仍在回答这个问题。其他人可能会发现它很有用。如果您正在使用Tomcat，请尝试在catalina.bash中为windows或catalina.sh添加以下内容以用于Linux服务器：

set CATALINA_OPTS=%CATALINA_OPTS% -javaagent:"C:\path\to\spring-instrument-3.1.1.RELEASE.jar"

请记住，它仅适用于低于7.0.55的Tomcat版本。之后它不会接受它。你需要在context.xml中添加它，如下所述load-time-weaver（aspectj-weaver）在apache tomcat 7.0.55中不起作用。

Java：使用名称＆＃39; loadTimeWeaver＆＃39;？

2 个答案: