我要评论开发环境使用jdk1.8.0_60，把springboot 项目打成war包后，
部署到apache-tomcat-7.0.68时报错如下，换成apache-tomcat-8.0.9解决
org.apache.catalina.lifecycleexception: failed to start component [standardengine[catalina].standardhost[localhost].standardcontext[/my-springboot-web-0.0.1]]
at org.apache.catalina.util.lifecyclebase.start(lifecyclebase.java:153)
at org.apache.catalina.core.containerbase.addchildinternal(containerbase.java:899)
at org.apache.catalina.core.containerbase.addchild(containerbase.java:875)
at org.apache.catalina.core.standardhost.addchild(standardhost.java:652)
at org.apache.catalina.startup.hostconfig.deploywar(hostconfig.java:1091)
at org.apache.catalina.startup.hostconfig$deploywar.run(hostconfig.java:1980)
at java.util.concurrent.executors$runnableadapter.call(executors.java:511)
at java.util.concurrent.futuretask.run(futuretask.java:266)
at java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1142)
at java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:617)
at java.lang.thread.run(thread.java:745)
caused by: java.lang.nosuchmethoderror: javax.servlet.servletcontext.getvirtualservername()ljava/lang/string;
at org.apache.tomcat.websocket.server.wsservercontainer.<init>(wsservercontainer.java:149)
at org.apache.tomcat.websocket.server.wssci.init(wssci.java:131)
at org.apache.tomcat.websocket.server.wssci.onstartup(wssci.java:47)
at org.apache.catalina.core.standardcontext.startinternal(standardcontext.java:5573)
at org.apache.catalina.util.lifecyclebase.start(lifecyclebase.java:147)
... 10 more
六月 22, 2017 12:19:15 上午 org.apache.catalina.startup.hostconfig deploywar
严重: error deploying web application archive e:\data\apache-tomcat-7.0.68\webapps\my-springboot-web-0.0.1.war
java.lang.illegalstateexception: containerbase.addchild: start: org.apache.catalina.lifecycleexception: failed to start component [standardengine[catalina].standardhost[localhost].standardcontext[/my-springboot-web-0.0.1]]
at org.apache.catalina.core.containerbase.addchildinternal(containerbase.java:903)
at org.apache.catalina.core.containerbase.addchild(containerbase.java:875)
at org.apache.catalina.core.standardhost.addchild(standardhost.java:652)
at org.apache.catalina.startup.hostconfig.deploywar(hostconfig.java:1091)
at org.apache.catalina.startup.hostconfig$deploywar.run(hostconfig.java:1980)
at java.util.concurrent.executors$runnableadapter.call(executors.java:511)
at java.util.concurrent.futuretask.run(futuretask.java:266)
at java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1142)
at java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:617)
at java.lang.thread.run(thread.java:745)
另外springboot项目打成war包部署到tomcat时需要改变启动方式，否则运行tomcat时war包只会解压，但是加载不了
import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.enableautoconfiguration;
import org.springframework.boot.autoconfigure.springbootapplication;
import org.springframework.boot.builder.springapplicationbuilder;
import org.springframework.boot.context.web.springbootservletinitializer;
@springbootapplication //- springboot项目,并配置扫描路径
@enableautoconfiguration //- springboot自动配置，这个注解可以根据你依赖的包自动生成相关配置
public class startapp extends springbootservletinitializer {
public static void main(string[] args) {
springapplication.run(startapp.class, args);
}
/**
* 需要把web项目打成war包部署到外部tomcat运行时需要改变启动方式
*/
@override
protected springapplicationbuilder configure(springapplicationbuilder builder) {
return builder.sources(startapp.class);
}
部署到外部tomcat时，注意pom.xml配置，否则会报错
<!-- 这里指定打war包的时不再需要tomcat相关的包，但是本地运行时必须注释掉，否则会报错 -->
<dependency>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-starter-tomcat</artifactid>
<version>1.3.5.release</version>
<scope>provided</scope>
</dependency>
**报错信息：** org.springframework.context.applicationcontextexception: unable to start embedded container; nested exception is java.lang.noclassdeffounderror: org/apache/juli/logging/logfactory at org.springframework.boot.context.embedded.embeddedwebapplicationcontext.onrefresh(embeddedwebapplicationcontext.java:133) at org.springframework.context.support.abstractapplicationcontext.refresh(abstractapplicationcontext.java:532) at org.springframework.boot.context.embedded.embeddedwebapplicationcontext.refresh(embeddedwebapplicationcontext.java:118) at org.springframework.boot.springapplication.refresh(springapplication.java:766) at org.springframework.boot.springapplication.createandrefreshcontext(springapplication.java:361) at org.springframework.boot.springapplication.run(springapplication.java:307) at org.springframework.boot.springapplication.run(springapplication.java:1191) at org.springframework.boot.springapplication.run(springapplication.java:1180) at com.startapp.main(startapp.java:13) caused by: java.lang.noclassdeffounderror: org/apache/juli/logging/logfactory at org.apache.catalina.util.lifecyclebase.<clinit>(lifecyclebase.java:37) at org.springframework.boot.context.embedded.tomcat.tomcatembeddedservletcontainerfactory.getembeddedservletcontainer(tomcatembeddedservletcontainerfactory.java:158) at org.springframework.boot.context.embedded.embeddedwebapplicationcontext.createembeddedservletcontainer(embeddedwebapplicationcontext.java:160) at org.springframework.boot.context.embedded.embeddedwebapplicationcontext.onrefresh(embeddedwebapplicationcontext.java:130) ... 8 more caused by: java.lang.classnotfoundexception: org.apache.juli.logging.logfactory at java.net.urlclassloader.findclass(urlclassloader.java:381) at java.lang.classloader.loadclass(classloader.java:424) at sun.misc.launcher$appclassloader.loadclass(launcher.java:331) at java.lang.classloader.loadclass(classloader.java:357) ... 12 more
springboot项目使用jsp页面时会添加以下依赖，但是在外部tomcat运行时会报错
因为tomcat /lib下自带的jar包（jasper.jar，jsp-api.jar等）会跟war包项目路径/lib下的解析jsp的jar包冲突
删除项目路径/lib下的相关jar包即可，如下图
<!-- 添加jsp支持 -->
<dependency>
<groupid>org.apache.tomcat.embed</groupid>
<artifactid>tomcat-embed-jasper</artifactid>
<version>8.0.33</version>
</dependency>
**报错信息：** [error][2017-06-22 00:48:28,303][org.springframework.boot.context.web.errorpagefilter]forwarding to error page from request [/excel] due to exception [java.lang.linkageerror: loader constraint violation: when resolving method "org.apache.jasper.runtime.instancemanagerfactory.getinstancemanager(ljavax/servlet/servletconfig;)lorg/apache/tomcat/instancemanager;" the class loader (instance of org/apache/jasper/servlet/jasperloader) of the current class, org/apache/jsp/jsp/excel_jsp, and the class loader (instance of java/net/urlclassloader) for the method's defining class, org/apache/jasper/runtime/instancemanagerfactory, have different class objects for the type org/apache/tomcat/instancemanager used in the signature] javax.servlet.servletexception: java.lang.linkageerror: loader constraint violation: when resolving method "org.apache.jasper.runtime.instancemanagerfactory.getinstancemanager(ljavax/servlet/servletconfig;)lorg/apache/tomcat/instancemanager;" the class loader (instance of org/apache/jasper/servlet/jasperloader) of the current class, org/apache/jsp/jsp/excel_jsp, and the class loader (instance of java/net/urlclassloader) for the method's defining class, org/apache/jasper/runtime/instancemanagerfactory, have different class objects for the type org/apache/tomcat/instancemanager used in the signature
默认配置下就可以通过包名/@requestmapping.value访问了， 另外部署到tomcat后静态资源（resources下的js文件）访问不到的问题还没解决。。。
以上所述是小编给大家介绍的springboot项目打成war包部署到tomcat遇到的一些问题，希望对大家有所帮助
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