Using the Maven Jetty plugin

This note is to describe the above plugin. which will run your web application in an embedded Jetty6 instance by just
typing "mvn jetty:run" - No need to download or install Jetty manually, it's all automatic once the Maven project
descriptor's set up (the pom.xml)

Configuring HowTo

Add the following to the <build><plugins> block of your projects pom.xml

<plugin>







<groupId>org.mortbay.jetty</groupId>







<artifactId>maven-jetty-plugin</artifactId>







</plugin>

Running

In order to run Jetty on a webapp project which is structured according to the usual Maven defaults, you don't need to configure anything.

Simply type:

mvn jetty:run

Due to a bug in maven or the maven-jetty-plugin this only works if no jetty artifact is present in the dependencies section of the pom.xml file. This is the case for wicket-quickstart, wicket-examples and wicket-threadtest. So the tips given here can't be applied to those projects.

Running the webapp in debug mode using Java Platform Debugger Architecture (JPDA)

Using maven command line:

I couldn't find a command line reference for maven2, but the one given for maven1 still aplies for the feature used here:

First set MAVEN_OPTS environment variable with the following command:

export MAVEN_OPTS='-Xdebug -Xrunjdwp:transport=dt_socket,address=4000,server=y,suspend=y'

After setting this property, run "maven jetty:run" and it will block, waiting for a debug connection. If "suspend=n" is set, it will start right away.

Using eclipse external tools:

Running Eclipse Open "Run --> External Tools --> External Tools... --> Program". Press "New launch configuration". On the "Main" tab, fill in the "Location:" as the full path to your "mvn" executable. For the "Working Directory:" select the workspace that matches your webapp. For "Arguments:" add jetty:run.

Move to the "Environment" tab and click the "New" button to add two new variables:

As above the jvm will start right away when "suspend=n" is set.

Attaching to the server running in debug mode, using eclipse:

Running Eclipse Open "Run --> Debug... --> Remote Java Application". Press "New launch configuration". Fill in the dialog by selecting your webapp project for the "Project:" field, and ensure you are using the same port number as you specified in the address= property above.

Now all you need to do is Run/Debug and select the name of the debug setup you setup above.

This article is a gathering of information, credits need to be given to the authors of the pages behind the given links.

 Eclipse中用Maven來啟動Jetty調試Web應用

1、先來配置一個外部工具，來運行JETTY：
 選擇菜單Run->External Tools->External Tools ...在左邊選擇Program，再點New：
 配置Location為mvn完整命令行。定位到bin下的mvn.bat
 選擇Working Directory為本項目。
 Arguments填寫：jetty:run
 再點選Enviroment頁：加入MAVEN_OPTS變量，值為：
 -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=8080,server=y,suspend=y
 其中，如果suspend=n 表示不調試，直接運行。address=8080為端口
 然后，點APPLY，點擊Run啟動jetty
 
2、調試應用
 點選run->debug...
 選中左樹中的Remote Java Application，再點New。
 選擇你的項目，關鍵是要填和之前設置外部工具時相同的端口號，其它都不變。
 
注意：停止調試后，8080端口并沒有關閉，再運行run->debug后會報錯，具體原因沒有去深究。建議采用TcpView等工具關閉對應端口的進程