两个servlet在tomcat上共享相同的jar吗？ [英] Does two servlets share the same jars on tomcat?

问题描述

事实：

• 在开发模式下运行良好的GWT应用程序。


• 同一个应用程序在独立服务器上以编译模式正常运行。 >同样的应用程序在运行其他应用程序的测试服务器上调用时会启动异常：
  
  

   引起：org.apache.commons .logging.LogConfigurationException：java.lang.ClassNotFoundException：org.apache.commons.logging.impl.Log4jFactory（由java.lang.ClassNotFoundException引起：org.apache.commons.logging.impl.Log4jFactory）
   at org。 apache.commons.logging.LogFactory.createFactory（LogFactory.java:1276）
   at org.apache.commons.logging.LogFactory $ 2.run（LogFactory.java:1065）
    

我以为Tomcat正在隔离每个servlet的Jar，看起来它并没有我错了......

app1正在使用：

  commons -beanutils-1.8.3.jar 
 commons-collections-3.2.1.jar 
 commons-configuration-1.10.jar 
 commons-dbcp-1.2.2.jar 
 commons -lang-2.6.jar 
 commons-logging-1.1.1.jar 
 commons-pool-1.5.3.jar 
 gwt-servlet.jar 
 hibernate-validator-4.1 .0.Final.jar 
 hibernate-validator-4.1.0.Final-sources.jar 
 json-simple-1.1.1.jar 
 log4j-1.2.16.jar 
 postgresql-9.1-901-1.jdbc4.jar 
 reds_da-1.0.0.jar 
 slf4j-api-1.6.1.jar 
 slf4j-log4j12-1.6.1.jar 
  

app2正在使用：

  activation-1.1.jar 
 avalon-framework-4.1.4.jar 
 commons-beanutils-1.8.0.jar 
 commons-codec-1.4.jar 
 commons-collections-3.2.1.jar 
 commons-configuration-1.0-dev-3.20030607.194155.jar 
 commons-dbcp-1.2.2.jar 
 commons-digester-2.0 .jar 
 commons-fileupload-1.0.jar 
 commons-grant-1.0-beta-4.jar 
 commons-httpclient-2.0-beta1.jar 
 commons-io-2.0 .jar 
 commons-jelly-20030902.160215.jar 
 commons-j elly-tags-antlr-20030211.143720.jar 
 commons-jelly-tags-jsl-20030211.143151.jar 
 commons-jelly-tags-log-20030211.142821.jar 
 commons-jelly-tags-velocity -20030303.205659.jar 
 commons-jelly-tags-xml-20030211.142705.jar 
 commons-jxpath-1.3.jar 
 commons-lang-2.6.jar 
 commons-logging-1.0 .4.jar 
 commons-logging-api-1.0.4.jar 
 commons-pool-1.5.3.jar 
 commons-validator-1.3.1.jar 
 core -2.0.jar 
 cryptix-3.2.0.jar 
 cssparser-0.9.5.jar 
 dom4j-1.6.1.jar 
 ecj-3.7.2.jar 
 ecs-1.4.2.jar 
 excalibur-component-2.1.jar 
 excalibur-instrument-api-2.1.jar 
 excalibur-instrument-mgr-api-2.1.jar 
 excalibur-instrument-mgr-impl-2.1.jar 
 excalibur-logger-2.1.jar 
 excalibur-pool-api-2.1.jar 
 excalibur-pool-impl-2.1.jar 
 excalibur-pool-instrumented-2.1.jar 
 freemarker-2.3.8.jar 
 htmlunit-2.9.jar 
 htmlunit-core-js-2.9.jar 
 httpclient-4.1.2.jar 
 httpcore-4.1.2.jar 
 httpmime-4.1.2.jar 
 itext-2.1.5。 jar 
 javase-2.0.jar 
 javax.mail-api-1.5.1.jar 
 jcs-1.3.jar 
 jericho-html-3.3.jar 
 jndi -1.2.1.jar 
 json-20090211.jar 
 jsoup-1.6.1.jar 
 junitperf-1.8.jar 
 jython-2.1.jar 
 log4j- 1.2.13.jar 
 logkit-1.0.1.jar 
 mail-1.4.jar 
 mailapi-1.5.1.jar 
 nekohtml-1.9.15.jar 
 odfdom-java-0.8.7.jar 
 oro-2.0.7.jar 
 poi-3.1-FINAL.jar 
 poi-contrib-3.1-FINAL.jar 
 poi -scratchpad-3.1-FINAL.jar 
 postgresql-9.1-901-1.jdbc4.jar 
 qrgen-1.3.jar 
 reds_da-1.0-SNAPSHOT.jar 
 sac-1.3 .jar 
 serializer-2.7.1.jar 
 smtp-1.5.1.jar 
 stratum-1.0-b3.jar 
 torque-3.3.jar 
 turbine- 2.3.3.jar 
 util-1.4-SNAPSHOT.jar 
 velocity-1.3.1.jar 
 velocity-dvsl-0.45.jar 
 village-3.3.jar 
 xalan-2.7.1.jar 
 xercesImpl-2.9.1.jar 
 xml-apis-1.0.b2.jar 
 xmlParserAPIs-2.0.2.jar 
 xmlpull-1.1 .3.1.jar 
 xmlrpc-2.0.jar 
 xom-1.1.jar 
 xpp3_min-1.1.4c.jar 
 xstream-1.4.5.jar 
  code> 

很显然，它似乎是



  commons-configuration-1.10.jar 
 log4j-1.2 .16.jar 
 commons-logging-1.1.1.jar 
  

有冲突。 / p>


解决方案

我希望JAR之间有冲突，我在进一步调查后对问题进行了不同的描述：

GWT应用的部署问题

It appears that I have a jar conflict in Tomcat.

The facts:

• A GWT application running great in dev mode.
• The same app running fine in compiled mode on a standalone server.

• The same app launches exceptions when called on a test server where other applications are running:

  Caused by: org.apache.commons.logging.LogConfigurationException: java.lang.ClassNotFoundException: org.apache.commons.logging.impl.Log4jFactory (Caused by java.lang.ClassNotFoundException: org.apache.commons.logging.impl.Log4jFactory)
      at org.apache.commons.logging.LogFactory.createFactory(LogFactory.java:1276)
      at org.apache.commons.logging.LogFactory$2.run(LogFactory.java:1065)
  

I was thinking that Tomcat is isolating Jar for each servlets, it seems it does not and I am wrong...

app1 is using:

commons-beanutils-1.8.3.jar
commons-collections-3.2.1.jar
commons-configuration-1.10.jar
commons-dbcp-1.2.2.jar
commons-lang-2.6.jar
commons-logging-1.1.1.jar
commons-pool-1.5.3.jar
gwt-servlet.jar
hibernate-validator-4.1.0.Final.jar
hibernate-validator-4.1.0.Final-sources.jar
json-simple-1.1.1.jar
log4j-1.2.16.jar
postgresql-9.1-901-1.jdbc4.jar
reds_da-1.0.0.jar
slf4j-api-1.6.1.jar
slf4j-log4j12-1.6.1.jar

app2 is using:

activation-1.1.jar
avalon-framework-4.1.4.jar
commons-beanutils-1.8.0.jar
commons-codec-1.4.jar
commons-collections-3.2.1.jar
commons-configuration-1.0-dev-3.20030607.194155.jar
commons-dbcp-1.2.2.jar
commons-digester-2.0.jar
commons-fileupload-1.0.jar
commons-grant-1.0-beta-4.jar
commons-httpclient-2.0-beta1.jar
commons-io-2.0.1.jar
commons-jelly-20030902.160215.jar
commons-jelly-tags-antlr-20030211.143720.jar
commons-jelly-tags-jsl-20030211.143151.jar
commons-jelly-tags-log-20030211.142821.jar
commons-jelly-tags-velocity-20030303.205659.jar
commons-jelly-tags-xml-20030211.142705.jar
commons-jxpath-1.3.jar
commons-lang-2.6.jar
commons-logging-1.0.4.jar
commons-logging-api-1.0.4.jar
commons-pool-1.5.3.jar
commons-validator-1.3.1.jar
core-2.0.jar
cryptix-3.2.0.jar
cssparser-0.9.5.jar
dom4j-1.6.1.jar
ecj-3.7.2.jar
ecs-1.4.2.jar
excalibur-component-2.1.jar
excalibur-instrument-api-2.1.jar
excalibur-instrument-mgr-api-2.1.jar
excalibur-instrument-mgr-impl-2.1.jar
excalibur-logger-2.1.jar
excalibur-pool-api-2.1.jar
excalibur-pool-impl-2.1.jar
excalibur-pool-instrumented-2.1.jar
freemarker-2.3.8.jar
htmlunit-2.9.jar
htmlunit-core-js-2.9.jar
httpclient-4.1.2.jar
httpcore-4.1.2.jar
httpmime-4.1.2.jar
itext-2.1.5.jar
javase-2.0.jar
javax.mail-api-1.5.1.jar
jcs-1.3.jar
jericho-html-3.3.jar
jndi-1.2.1.jar
json-20090211.jar
jsoup-1.6.1.jar
junitperf-1.8.jar
jython-2.1.jar
log4j-1.2.13.jar
logkit-1.0.1.jar
mail-1.4.jar
mailapi-1.5.1.jar
nekohtml-1.9.15.jar
odfdom-java-0.8.7.jar
oro-2.0.7.jar
poi-3.1-FINAL.jar
poi-contrib-3.1-FINAL.jar
poi-scratchpad-3.1-FINAL.jar
postgresql-9.1-901-1.jdbc4.jar
qrgen-1.3.jar
reds_da-1.0-SNAPSHOT.jar
sac-1.3.jar
serializer-2.7.1.jar
smtp-1.5.1.jar
stratum-1.0-b3.jar
torque-3.3.jar
turbine-2.3.3.jar
util-1.4-SNAPSHOT.jar
velocity-1.3.1.jar
velocity-dvsl-0.45.jar
village-3.3.jar
xalan-2.7.1.jar
xercesImpl-2.9.1.jar
xml-apis-1.0.b2.jar
xmlParserAPIs-2.0.2.jar
xmlpull-1.1.3.1.jar
xmlrpc-2.0.jar
xom-1.1.jar
xpp3_min-1.1.4c.jar
xstream-1.4.5.jar

Clearly, it seems that

commons-configuration-1.10.jar
log4j-1.2.16.jar
commons-logging-1.1.1.jar

are conflicting.

解决方案

I was hoping for a conflict between JARs, I described the problem differently after further investigation:

Deployment issue with GWT app

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