我正在尝试制作一个“可执行”war文件(java -jar myWarFile.war
),该文件将启动一个Jetty网络服务器,该网络服务器托管我执行的WAR文件中包含的webapp。
我发现a page描述了如何制作我正在寻找的东西:
然而,遵循这个建议以及我认为我应该制作一个可执行jar(战争)的方式是行不通的。
我有一个Ant任务创建一个带有清单的WAR文件,如下所示:
Manifest-Version: 1.0 Ant-Version: Apache Ant 1.7.1 Created-By: 1.5.0_18-b02 (Sun Microsystems Inc.) Main-Class: Start
WAR文件的内容如下:
> Start.class
> jsp
> build.jsp
> META-INF
> MANIFEST.MF
> WEB-INF
> lib
> jetty-6.1.22.jar
> jetty-util.6.1.22.jar
当我尝试执行WAR文件时,错误是:
Exception in thread "main" java.lang.NoClassDefFoundError: org/mortbay/jetty/Handler
Caused by: java.lang.ClassNotFoundException: org.mortbay.jetty.Handler
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: Start. Program will exit.
这里似乎有两个错误:一个似乎无法找到JAR文件,另一个找不到Start
类。
要修复第一个,我将Jetty JAR文件放在WAR文件的基础上并再次尝试 - 同样的错误。我还尝试将WEB-INF/lib/<specific-JAR-files>
添加到清单的Class-Path
属性中。这也不起作用。
有没有人对我正确/错误以及如何启动并运行此可执行WAR文件有任何见解?
答案 0 :(得分:50)
您问题中的link提供了您需要的大部分内容。但是,除此之外还有一些事情需要做。
Jetty需要启动的任何类文件都需要在打包时位于war文件的根目录下。在我们<war>
文件之前,我们可以利用Ant为我们做这件事。 war的manifest文件还需要一个Main-Class
属性来执行服务器。
以下是一步一步:
这是根据您提供的链接改编的。
package com.mycompany.myapp;
import java.io.File;
import java.net.URL;
import java.security.ProtectionDomain;
import org.mortbay.jetty.Server;
import org.mortbay.jetty.webapp.WebAppContext;
public final class EmbeddedJettyServer
{
public static void main(String[] args) throws Exception
{
int port = Integer.parseInt(System.getProperty("port", "8080"));
Server server = new Server(port);
ProtectionDomain domain = EmbeddedJettyServer.class.getProtectionDomain();
URL location = domain.getCodeSource().getLocation();
WebAppContext webapp = new WebAppContext();
webapp.setContextPath("/");
webapp.setDescriptor(location.toExternalForm() + "/WEB-INF/web.xml");
webapp.setServer(server);
webapp.setWar(location.toExternalForm());
// (Optional) Set the directory the war will extract to.
// If not set, java.io.tmpdir will be used, which can cause problems
// if the temp directory gets cleaned periodically.
// Your build scripts should remove this directory between deployments
webapp.setTempDirectory(new File("/path/to/webapp-directory"));
server.setHandler(webapp);
server.start();
server.join();
}
}
要查看您在此处可以配置的内容,请查看Jetty API documentation。
这使用一个临时目录将必要的类文件解压缩到战争的根目录中,以便在执行战争时可以访问它们。
<target name="war" description="--> Creates self-executing war">
<property name="staging.dir" location="${basedir}/staging"/>
<property name="webapp.dir" location="${basedir}/src/webapp"/>
<mkdir dir="${staging.dir}"/>
<!-- assumes you have all of your war content (excluding classes and libraries) already structured in a directory called src/webapp -->
<!-- e.g. -->
<!-- src/webapp/index.html -->
<!-- src/webapp/WEB-INF/web.xml -->
<!-- src/webapp/WEB-INF/classes/my.properties -->
<!-- etc ... -->
<copy todir="${staging.dir}">
<fileset dir="${webapp.dir}" includes="**/*"/>
</copy>
<unjar dest="${staging.dir}">
<!-- you'll have to locate these jars or appropriate versions; note that these include JSP support -->
<!-- you might find some of them in the downloaded Jetty .tgz -->
<fileset dir="path/to/jetty/jars">
<include name="ant-1.6.5.jar"/>
<include name="core-3.1.1.jar"/>
<include name="jetty-6.1.24.jar"/>
<include name="jsp-2.1-glassfish-2.1.v20091210.jar"/><!-- your JSP implementation may vary -->
<include name="jsp-api-2.1-glassfish-2.1.v20091210.jar"/><!-- your JSP implementation may vary -->
<include name="servlet-api-2.5-20081211.jar"/><!-- your Servlet API implementation may vary -->
</fileset>
<patternset><!-- to exclude some of the stuff we don't really need -->
<exclude name="META-INF/**/*"/>
<exclude name="images/**/*"/>
<exclude name=".options"/>
<exclude name="about.html"/>
<exclude name="jdtCompilerAdapter.jar"/>
<exclude name="plugin*"/>
</patternset>
</unjar>
<!-- copy in the class file built from the above EmbeddedJettyServer.java -->
<copy todir="${staging.dir}">
<fileset dir="path/to/classes/dir" includes="com/mycompany/myapp/EmbeddedJettyServer.class"/>
</copy>
<war destfile="myapp.war" webxml="${webapp.dir}/WEB-INF/web.xml">
<fileset dir="${staging.dir}" includes="**/*"/>
<classes dir="path/to/classes/dir"/><!-- your application classes -->
<lib dir="path/to/lib/dir"/><!-- application dependency jars -->
<manifest>
<!-- add the Main-Class attribute that will execute our server class -->
<attribute name="Main-Class" value="com.mycompany.myapp.EmbeddedJettyServer"/>
</manifest>
</war>
<delete dir="${staging.dir}"/>
</target>
如果一切都在上面正确设置,你应该能够:
java -jar myapp.war
// or if you want to configure the port (since we are using the System property in the code)
java -Dport=8443 -jar myapp.war
答案 1 :(得分:45)
这是对@ RobHruska的答案Maven的改编。它只是复制主类的文件并将Jetty JAR文件合并到WAR文件中,没有什么新东西,只是为了简化你的生活,如果你是像Maven这样的新人:
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<id>move-main-class</id>
<phase>compile</phase>
<configuration>
<tasks>
<copy todir="${project.build.directory}/${project.build.finalName}">
<fileset dir="${project.build.directory}/${project.build.finalName}/WEB-INF/classes/">
<include name="main/*.class" />
</fileset>
</copy>
<unjar dest="${project.build.directory}/${project.build.finalName}">
<!-- you'll have to locate these jars or appropriate versions; note that these include JSP support -->
<!-- you might find some of them in the downloaded Jetty .tgz -->
<fileset dir="${project.build.directory}/${project.build.finalName}/WEB-INF/lib/">
<include name="ant-1.6.5.jar"/>
<!--<include name="core-3.1.1.jar"/>-->
<include name="jetty*"/>
<include name="servlet-api*"/>
</fileset>
<patternset><!-- to exclude some of the stuff we don't really need -->
<exclude name="META-INF/**/*"/>
<exclude name="images/**/*"/>
<exclude name=".options"/>
<exclude name="about.html"/>
<exclude name="jdtCompilerAdapter.jar"/>
<exclude name="plugin*"/>
</patternset>
</unjar>
</tasks>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.2</version>
<configuration>
<archiveClasses>true</archiveClasses>
<archive>
<manifest>
<mainClass>main.Main</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
答案 2 :(得分:14)
我们已经通过使用jetty-console-maven-plugin来解决这个问题。
无论何时运行mvn包,它都会创建另一个可以与java -jar一起使用的war-whatever-runnable.war
<plugin>
<groupId>org.simplericity.jettyconsole</groupId>
<artifactId>jetty-console-maven-plugin</artifactId>
<version>1.45</version>
<executions>
<execution>
<goals>
<goal>createconsole</goal>
</goals>
</execution>
</executions>
<configuration>
<additionalDependencies>
<additionalDependency>
<artifactId>jetty-console-requestlog-plugin</artifactId>
</additionalDependency>
<additionalDependency>
<artifactId>jetty-console-gzip-plugin</artifactId>
</additionalDependency>
<additionalDependency>
<artifactId>jetty-console-ajp-plugin</artifactId>
</additionalDependency>
<additionalDependency>
<artifactId>jetty-console-startstop-plugin</artifactId>
</additionalDependency>
</additionalDependencies>
</configuration>
</plugin>
它还会为您生成init.d脚本和所有内容!
答案 3 :(得分:7)
Hudson使用Winstone servlet容器解决了这个确切的问题,该容器直接支持这个用例。 http://winstone.sourceforge.net/#embedding
也许这对你有用吗?
答案 4 :(得分:6)
即使这是旧的另一种替代Jetty 8只是简单地将Jetty jar作为依赖项包含在你的pom中并在你的pom中添加以下内容(相对于解包战争并重新打包它的ant脚本):
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.4</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<createDependencyReducedPom>true</createDependencyReducedPom>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>JettyStandaloneMain</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
<!-- The main class needs to be in the root of the war in order to be
runnable -->
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<id>move-main-class</id>
<phase>compile</phase>
<configuration>
<tasks>
<move todir="${project.build.directory}/${project.build.finalName}">
<fileset dir="${project.build.directory}/classes/">
<include name="JettyStandaloneMain.class" />
</fileset>
</move>
</tasks>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
</executions>
</plugin>
答案 5 :(得分:3)
我认为“没有maven”你想要一个可以独立运行的jar而不是“mvn jetty:run” - 而不是你根本不想使用maven。
我花了很长时间才弄明白,因为我发现了许多选择 - 其中没有一个简单。最后我找到了this maven plugin from simplericity。它运作得非常好。
答案 6 :(得分:1)
这是我的ANT提取示例。我们的想法是解压缩Jetty依赖项,然后像普通的JAR文件一样在本地包含它们:
<!-- Hack: Java doesn't support jars within jars/wars -->
<unjar src="${lib.dir}/container/jetty.jar" dest="${build.dir}/unjar"/>
<unjar src="${lib.dir}/container/jetty-util.jar" dest="${build.dir}/unjar"/>
<unjar src="${lib.dir}/container/servlet-api.jar" dest="${build.dir}/unjar"/>
<unjar src="${lib.dir}/container/jsp-api.jar" dest="${build.dir}/unjar"/>
<!-- Build war file as normal, just including the compiled and unjar'ed files -->
<war destfile="${war.file}" webxml="${config.dir}/web.xml">
<fileset dir="${build.dir}/classes"/>
<fileset dir="${build.dir}/unjar"/>
<fileset dir="${resources.dir}" excludes="*.swp"/>
<lib dir="${lib.dir}/runtime"/>
<manifest>
<attribute name="Main-Class" value="Start"/>
</manifest>
</war>
注意:
WEB-INF / lib 目录用于Web应用程序依赖项。在这种情况下,我们打包WAR文件,使其像启动时的普通Jetty JAR文件一样工作
答案 7 :(得分:0)
WEB-INF/lib
中无助于JVM发现Jetty文件甚至开始启动.war。将它们放在那里“为时已晚”。那该怎么办?
答案 8 :(得分:0)
之前我做过类似的事情,但你是否将应用程序称为“java -jar xxx.war”?你只有2个罐子,我觉得这还不够。另请尝试使用Jetty 7.0.0M1(这是最新版本)。当我添加jetty-server和jetty-webapp作为两个依赖项(它们来自org.eclipse.jetty)时,我在lib目录中获得了以下jar。仅供参考org.mortbay.jetty.Handler在jetty-server * .jar中。