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[Translated] 20141208 Install Jetty 9 (Java servlet engine and webserver) on Ubuntu 14.10 Server.md
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Translating by GOLinux!
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Install Jetty 9 (Java servlet engine and webserver) on Ubuntu 14.10 Server
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================================================================================
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Jetty provides a Web server and javax.servlet container, plus support for SPDY, WebSocket, OSGi, JMX, JNDI, JAAS and many other integrations. These components are open source and available for commercial use and distribution.
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Jetty is used in a wide variety of projects and products, both in development and production. Jetty can be easily embedded in devices, tools, frameworks, application servers, and clusters. See the Jetty Powered page for more uses of Jetty.
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### Jetty Features ###
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- Full-featured and standards-based
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- Open source and commercially usable
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- Flexible and extensible
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- Small footprint
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- Embeddable
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- Asynchronous
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- Enterprise scalable
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- Dual licensed under Apache and Eclipse
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### Install Jetty9 on ubuntu 14.10 server ###
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#### Prerequisites ####
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You need to install Java before installing jetty server using the following command
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sudo apt-get install openjdk-8-jdk
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This will install it to /usr/lib/jvm/java-8-openjdk-i386. A symlink java-1.8.0-openjdk-i386 is created in the directory /usr/lib/jvm/. A symlink is also created at /usr/bin/java
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Now you need to download Jetty9 from [here][1] after downloading you need to extract using the following command
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$tar -xvf jetty-distribution-9.2.5.v20141112.tar.gz
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This unpacks the jetty-distribution-9.2.5.v20141112 and you need to Move the archive to /opt/jetty using the following command
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$mv jetty-distribution-9.2.5.v20141112 /opt/jetty
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You need to Create jetty user and make it the owner of /opt/jetty directory
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sudo useradd jetty -U -s /bin/false
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sudo chown -R jetty:jetty /opt/jetty
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#### Jetty Startup Script ####
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Copy the Jetty script to run as a service using the following command
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$ cp /opt/jetty/bin/jetty.sh /etc/init.d/jetty
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Now you need to create jetty settings file with the following content
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sudo vi /etc/default/jetty
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Add the following lines
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JAVA_HOME=/usr/bin/java
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JETTY_HOME=/opt/jetty
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NO_START=0
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JETTY_ARGS=jetty.port=8085
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JETTY_HOST=0.0.0.0
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JETTY_USER=jetty
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Save and exit the file
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You need to start jetty service using the following command
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sudo service jetty start
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You should see output similar to the following
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Starting Jetty: OK Mon Nov 24 11:55:48 GMT 2014
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If you see the following error
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#### ** ERROR: JETTY_HOME not set, you need to set it or install in a standard location ####
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You need to make sure you have correct jetty home path in /etc/default/jetty file i.e JETTY_HOME=/opt/jetty
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You can test the jetty using the following URL
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It should now be running on port 8085! Visit in your browser http://serverip:8085 and you should see a Jetty screen.
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#### Jetty Service checking ####
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Verify and check your configuration with the following command
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sudo service jetty check
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Jetty automatically start on reboot using the following command
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sudo update-rc.d jetty defaults
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Reboot the server and test if Jetty starts automatically.
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To check which port Jetty is running or whether there are any conflicts with other programs for that port, run netstat -tln
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--------------------------------------------------------------------------------
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via: http://www.ubuntugeek.com/install-jetty-9-java-servlet-engine-and-webserver-on-ubuntu-14-10-server.html
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作者：[ruchi][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[a]:http://www.ubuntugeek.com/author/ubuntufix
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[1]:http://download.eclipse.org/jetty/stable-9/dist/
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@ -0,0 +1,104 @@
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Ubuntu 14.10 Server上安装Jetty 9（Java服务引擎和Web服务器）
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================================================================================
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Jetty提供了一个Web服务器和javax.servlet容器，为SPDY、WebSocket、OSGi、JMX、JNDI、JAAS以及许多其它集成套件添加了支持。这些组件都是开源的，也可用于商业用途和分发。
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Jetty被广泛用于多种项目和产品，都可以在开发环境和生产环境中使用。Jetty可以很容易地嵌入到设备、工具、框架、应用服务器以及集群中。更多用途可参见Jetty网页。
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### Jetty特性 ###
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- 全功能并基于标准
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- 开源与商用两可
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- 灵活和可扩展
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- 小足迹
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- 可嵌入
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- 异步
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- 企业弹性扩展
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- Apache和Eclipse双重许可
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### ubuntu 14.10 server上安装Jetty 9 ###
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#### 先决条件 ####
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在安装Jetty服务器前，您需要通过以下命令安装Java
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sudo apt-get install openjdk-8-jdk
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Java将会安装到/usr/lib/jvm/java-8-openjdk-i386，同时在该目录下会创建一个名为java-8-openjdk-i386的符号链接，在/usr/bin/java下也会相应创建符号链接。
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现在你需要从[这里][1]下载Jetty9，在下载完成后，你需要使用以下命令来解压缩
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$tar -xvf jetty-distribution-9.2.5.v20141112.tar.gz
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该操作会将它解压到jetty-distribution-9.2.5.v20141112，而你需要使用以下命令将归档文件移动到/opt/jetty
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$mv jetty-distribution-9.2.5.v20141112 /opt/jetty
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你需要创建jetty用户，并将其设置成/opt/jetty目录的属主
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sudo useradd jetty -U -s /bin/false
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sudo chown -R jetty:jetty /opt/jetty
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使用以下命令拷贝Jetty脚本到启动目录，以便让它作为一个服务来运行
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$ cp /opt/jetty/bin/jetty.sh /etc/init.d/jetty
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现在，你需要使用以下内容来创建Jetty设置文件
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sudo vi /etc/default/jetty
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添加以下行
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JAVA_HOME=/usr/bin/java
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JETTY_HOME=/opt/jetty
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NO_START=0
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JETTY_ARGS=jetty.port=8085
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JETTY_HOST=0.0.0.0
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JETTY_USER=jetty
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保存并退出该文件
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你需要使用以下命令来启动Jetty服务
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sudo service jetty start
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你应该看到和下面类似的输出
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Starting Jetty: OK Mon Nov 24 11:55:48 GMT 2014
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如果你看到了下面的错误
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#### ** ERROR: JETTY_HOME not set, you need to set it or install in a standard location ####
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你需要确保在/etc/default/jetty文件中设置了正确的Jetty家目录路径，
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你可以使用以下URL来测试jetty
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Jetty现在应该运行在8085端口，打开浏览器并访问http://serverip:8085，你应该可以看到Jetty屏幕。
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#### Jetty服务检查 ####
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使用以下命令来验证并检查配置
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sudo service jetty check
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使用以下命令来让Jetty开重启后自动启动
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sudo update-rc.d jetty defaults
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重启服务器并测试Jetty是否自动启动。
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要检查Jetty运行在哪个端口上，或者该端口是否与其它程序冲突，可以运行netstat -tln
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--------------------------------------------------------------------------------
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via: http://www.ubuntugeek.com/install-jetty-9-java-servlet-engine-and-webserver-on-ubuntu-14-10-server.html
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作者：[ruchi][a]
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译者：[GOLinux](https://github.com/GOLinux)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[a]:http://www.ubuntugeek.com/author/ubuntufix
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[1]:http://download.eclipse.org/jetty/stable-9/dist/
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