blocks|key|826232|text|环境变量MAVEN_OPTS就是答案。将MAVEN_OPTS的字符串内容传递给JVM+(java.exe)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|826233|shell中的Linux:在shell类型中export+MAVEN_OPTS=....|CODE|826234|Windows:+in++(cmd.exe)类型set+MAVEN_OPTS=...|unordered-list-item|826235|826236|例如:在Windows上，set+MAVEN_OPTS="-Xmx1024m"将Maven进程的堆大小设置为1024mb。|826237|Jetty更新+(01.04.2013)：将其直接传递给。|826238|Matthew+Farwell+(请支持JVM+)提供了一个解决方案，即使用派生的his+answer进程来运行a+new+feature+of+the+Jetty+plugin。这是一个更好的解决方案，因为前者运行在与Maven相同的JVM进程中(因此共享内存)。|826239|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/13388081|1|http://www.eclipse.org/jetty/documentation/current/jetty-maven-plugin.html#jetty-run-forked-goal^0|0|E|0|M|M|0|O|I|0|0|D|Q|0|S|1|0|0|3P|15|A|0|1K|X|1|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|15|8|@$9|16|A|17|B|H]]|D|@]|E|$]]|$1|I|3|J|5|K|7|18|8|@$9|19|A|1A|B|H]]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1C|8|@$9|1D|A|1E|B|H]]|D|@]|E|$]]|$1|O|3|P|5|6|7|1F|8|@$9|1G|A|1H|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|6|7|1I|8|@$9|1J|A|1K|B|C]]|D|@$9|1L|A|1M|1|1N]|$9|1O|A|1P|1|1Q]]|E|$]]|$1|S|3|-4|5|6|7|1R|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]|10|$5|V|W|X|E|$Y|11]]]]

The enviroment variable MAVEN_OPTS is the answer. The string content of MAVEN_OPTS is passed to JVM (java.exe).

<ul>
<li>Linux: in shell type <code>export MAVEN_OPTS=....</code></li>
<li>Windows: in shell (cmd.exe) type <code>set MAVEN_OPTS=...</code></li>
</ul>

For example: on Windows <code>set MAVEN_OPTS="-Xmx1024m"</code> sets the heap size of the Maven process to 1024mb.

Update (01.04.2013): Pass it directly to Jetty.

Matthew Farwell (please upvote <a href="https://stackoverflow.com/a/13388081">his answer</a> to give him credit) comes with the solution of using a forked JVM process to run Jetty which is <a href="http://www.eclipse.org/jetty/documentation/current/jetty-maven-plugin.html#jetty-run-forked-goal" rel="noreferrer">a new feature of the Jetty plugin</a>. This is a better solution as the former runs inside same JVM process as Maven (thus shares memory).

blocks|key|678916|text|对于较新版本的maven-jetty-plugin，您可以使用mvn:run-forked。选项jvmArgs将允许您设置-Xmx等。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|678917|有关更多信息，请参阅：jetty:run-forked+:+Running+an+unassembled+webapp+in+a+separate+jvm。|678918|我认为最初的问题是Starting+Jetty+in+separate+JVM。|678919|entityMap|0|LINK|mutability|MUTABLE|url|http://wiki.eclipse.org/Jetty/Feature/Jetty_Maven_Plugin#jetty:run-forked_:_Running_an_unassembled_webapp_in_a_separate_jvm|1|http://jira.codehaus.org/browse/JETTY-991^0|V|E|0|B|1U|0|0|9|U|1|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|H|3|I|5|6|7|10|8|@]|D|@$9|11|A|12|1|13]]|E|$]]|$1|J|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]|R|$5|M|N|O|E|$P|S]]]]

With more recent versions of the maven-jetty-plugin, you can use <code>mvn:run-forked</code>. The option jvmArgs will allow you to set -Xmx etc.

For more information, see: <a href="http://wiki.eclipse.org/Jetty/Feature/Jetty_Maven_Plugin#jetty:run-forked_:_Running_an_unassembled_webapp_in_a_separate_jvm" rel="noreferrer">jetty:run-forked : Running an unassembled webapp in a separate jvm</a>.

I think the original issue was <a href="http://jira.codehaus.org/browse/JETTY-991" rel="noreferrer">Starting Jetty in separate JVM</a>.

blocks|key|679493|text|您当前的方法似乎是正确的--当通过maven运行jetty时，jetty是maven进程中的一个线程。所以增加maven的heap会增加jetty的heap。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|679494|你是如何设置MAVEN_OPTS的？|679495|我找到的一个例子是这样的：MAVEN_OPTS='-Xmx256m+-Xms10m'+mvn+clean+jetty:run|offset|length|style|CODE|679496|请注意，MAVEN_OPTS在这里是一个环境变量，而不是传递给JVM+(谁不知道如何处理它)。|679497|entityMap^0|0|0|D|1D|0|4|A|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@$F|Q|G|R|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@$F|T|G|U|H|I]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|M|$]]

It seems like your current approach is correct - when running jetty through maven, jetty is a thread inside the maven process. So increasing maven's heap will increase jetty's heap.

How are you setting MAVEN_OPTS?

One example I found looks like this: <code>MAVEN_OPTS='-Xmx256m -Xms10m' mvn clean jetty:run</code> 

Note that <code>MAVEN_OPTS</code> is an environment variable here, and not passed to the JVM (who wouldn't know what to do with it).

blocks|key|679655|text|要通过命令行指定vm参数(按照最初的要求)，您可以执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|679656|mvn+clean+install+-DargLine="-Xmx1524m"+|code-block|syntax|javascript|679657|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

To specify vm arguments via the command line (as originally asked) you can do the following:

<pre><code>mvn clean install -DargLine="-Xmx1524m" 
</code></pre>

blocks|key|826357|text|这里提到的<jvmArgs>参数：Maven+jetty+plugin对我不起作用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|826358|Maven版本:+Apache+Maven+3.0.3|826359|Jetty+Maven插件版本:+jetty-maven-+plugin+:8.1.10.v20130312|826360|这是可行的：|826361|MAVEN_OPTS='-Xmx4096m+-Xms4096m'
export+MAVEN_OPTS
mvn+jetty:run+&|code-block|syntax|javascript|826362|entityMap|0|LINK|mutability|MUTABLE|url|http://wiki.eclipse.org/Jetty/Feature/Jetty_Maven_Plugin#jetty%253arun-forked__%253a__Running_an_unassembled_webapp_in_a_separate_jvm^0|5|9|H|I|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|15|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|16|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|17|8|@]|D|@]|E|$O|P]]|$1|Q|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]]]

The <code>&lt;jvmArgs&gt;</code> param mentioned here : <a href="http://wiki.eclipse.org/Jetty/Feature/Jetty_Maven_Plugin#jetty%3arun-forked__%3a__Running_an_unassembled_webapp_in_a_separate_jvm" rel="nofollow">Maven jetty plugin</a> 
didn't work for me . 

Maven version : Apache Maven 3.0.3

Jetty Maven plugin version : jetty-maven-plugin:8.1.10.v20130312

This worked :

<pre><code>MAVEN_OPTS='-Xmx4096m -Xms4096m'
export MAVEN_OPTS
mvn jetty:run &amp;
</code></pre>

blocks|key|678904|text|在Linux/Unix上|type|unstyled|depth|inlineStyleRanges|entityRanges|data|678905|export+MAVEN_OPTS="-Xmx256m"+&&+mvn+clean+install+jetty:run|code-block|syntax|javascript|678906|会起到作用的|678907|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

On Linux/Unix 

<pre><code>export MAVEN_OPTS="-Xmx256m" &amp;&amp; mvn clean install jetty:run
</code></pre>

will do the trick

blocks|key|1979954|text|该插件允许您像这样指定jvmArgs：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1979955|<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<configuration>
++++<jvmArgs>-Xmx1024</jvmArgs>
++++<scanIntervalSeconds>10</scanIntervalSeconds>
++++<connectors>
++++++++<connector+implementation="org.eclipse.jetty.server.nio.SelectChannelConnector">
++++++++++++<port>8080</port>
++++++++++++<maxIdleTime>60000</maxIdleTime>
++++++++</connector>
++++</connectors>
++++<webAppConfig>
++++++++<jettyEnvXml>jetty-env.xml</jettyEnvXml>
++++</webAppConfig>
</configuration>
<executions>
++++<execution>
++++++++<phase>test</phase>
++++++++<goals>
++++++++++++<goal>run-exploded</goal>
++++++++</goals>
++++</execution>
</executions>
</plugin>|code-block|syntax|javascript|1979956|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The plugin allows you to specify jvmArgs like this:

<pre><code>&lt;plugin&gt;
&lt;groupId&gt;org.mortbay.jetty&lt;/groupId&gt;
&lt;artifactId&gt;jetty-maven-plugin&lt;/artifactId&gt;
&lt;configuration&gt;
 &lt;jvmArgs&gt;-Xmx1024&lt;/jvmArgs&gt;
 &lt;scanIntervalSeconds&gt;10&lt;/scanIntervalSeconds&gt;
 &lt;connectors&gt;
 &lt;connector implementation="org.eclipse.jetty.server.nio.SelectChannelConnector"&gt;
 &lt;port&gt;8080&lt;/port&gt;
 &lt;maxIdleTime&gt;60000&lt;/maxIdleTime&gt;
 &lt;/connector&gt;
 &lt;/connectors&gt;
 &lt;webAppConfig&gt;
 &lt;jettyEnvXml&gt;jetty-env.xml&lt;/jettyEnvXml&gt;
 &lt;/webAppConfig&gt;
&lt;/configuration&gt;
&lt;executions&gt;
 &lt;execution&gt;
 &lt;phase&gt;test&lt;/phase&gt;
 &lt;goals&gt;
 &lt;goal&gt;run-exploded&lt;/goal&gt;
 &lt;/goals&gt;
 &lt;/execution&gt;
&lt;/executions&gt;
&lt;/plugin&gt;
</code></pre>

blocks|key|1982254|text|您可以使用来传递-Xmx参数，如；|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1982255|<plugin>
++++++++++++<groupId>org.eclipse.jetty</groupId>
++++++++++++<artifactId>jetty-maven-plugin</artifactId>
++++++++++++<version></version>
++++++++++++<configuration>
++++++++++++++++<jvmArgs>-Xmx+-Xms+-XX:PermSize=+-XX:MaxPermSize=+-XX:%2BHeapDumpOnOutOfMemoryError</jvmArgs>
++++++++++++++++<scanIntervalSeconds>1</scanIntervalSeconds>
++++++++++++++++<stopKey>stop-jetty</stopKey>
++++++++++++++++<stopPort>9999</stopPort>
++++++++++++++++<systemProperties>
++++++++++++++++++++<systemProperty>
++++++++++++++++++++++++<name>jetty.port</name>
++++++++++++++++++++++++<value>9090</value>
++++++++++++++++++++</systemProperty>
++++++++++++++++++++<systemProperty>
++++++++++++++++++++++++<name>spring.profiles.active</name>
++++++++++++++++++++++++<value></value>
++++++++++++++++++++</systemProperty>
++++++++++++++++</systemProperties>

++++++++++++++++<webApp>
++++++++++++++++++++<contextPath>/</contextPath>
++++++++++++++++</webApp>
++++++++++++</configuration>
++++++++</plugin>|code-block|syntax|javascript|1982256|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

you can use to pass -Xmx argument like;

<pre><code>&lt;plugin&gt;
 &lt;groupId&gt;org.eclipse.jetty&lt;/groupId&gt;
 &lt;artifactId&gt;jetty-maven-plugin&lt;/artifactId&gt;
 &lt;version&gt;&lt;/version&gt;
 &lt;configuration&gt;
 &lt;jvmArgs&gt;-Xmx -Xms -XX:PermSize= -XX:MaxPermSize= -XX:+HeapDumpOnOutOfMemoryError&lt;/jvmArgs&gt;
 &lt;scanIntervalSeconds&gt;1&lt;/scanIntervalSeconds&gt;
 &lt;stopKey&gt;stop-jetty&lt;/stopKey&gt;
 &lt;stopPort&gt;9999&lt;/stopPort&gt;
 &lt;systemProperties&gt;
 &lt;systemProperty&gt;
 &lt;name&gt;jetty.port&lt;/name&gt;
 &lt;value&gt;9090&lt;/value&gt;
 &lt;/systemProperty&gt;
 &lt;systemProperty&gt;
 &lt;name&gt;spring.profiles.active&lt;/name&gt;
 &lt;value&gt;&lt;/value&gt;
 &lt;/systemProperty&gt;
 &lt;/systemProperties&gt;

 &lt;webApp&gt;
 &lt;contextPath&gt;/&lt;/contextPath&gt;
 &lt;/webApp&gt;
 &lt;/configuration&gt;
 &lt;/plugin&gt;
</code></pre>

blocks|key|679663|text|没有办法使用命令行。但是您可以将mvn.cmd+/+mvn.sh复制到mvnhp.cmd并更改行|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|679664|%25MAVEN_JAVA_EXE%25+%25JVM_CONFIG_MAVEN_PROPS%25+%25MAVEN_OPTS%25+%25MAVEN_DEBUG_OPTS%25+-classpath+%25CLASSWORLDS_JAR%25+"-Dclassworlds.conf=%25M2_HOME%25\bin\m2.conf"+"-Dmaven.home=%25M2_HOME%25"+"-Dmaven.multiModuleProjectDirectory=%25MAVEN_PROJECTBASEDIR%25"+%25CLASSWORLDS_LAUNCHER%25+%25MAVEN_CMD_LINE_ARGS%25|code-block|syntax|javascript|679665|至|679666|%25MAVEN_JAVA_EXE%25+-Xmx1024m+%25JVM_CONFIG_MAVEN_PROPS%25+%25MAVEN_OPTS%25+%25MAVEN_DEBUG_OPTS%25+-classpath+%25CLASSWORLDS_JAR%25+"-Dclassworlds.conf=%25M2_HOME%25\bin\m2.conf"+"-Dmaven.home=%25M2_HOME%25"+"-Dmaven.multiModuleProjectDirectory=%25MAVEN_PROJECTBASEDIR%25"+%25CLASSWORLDS_LAUNCHER%25+%25MAVEN_CMD_LINE_ARGS%25|679667|entityMap^0|G|7|Q|6|Z|9|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

There is no way using the commandline. But you could copy the <code>mvn.cmd</code> / <code>mvn.sh</code> to <code>mvnhp.cmd</code> and change the line 

<pre><code>%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %CLASSWORLDS_JAR% "-Dclassworlds.conf=%M2_HOME%\bin\m2.conf" "-Dmaven.home=%M2_HOME%" "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %CLASSWORLDS_LAUNCHER% %MAVEN_CMD_LINE_ARGS%
</code></pre>

To 

<pre><code>%MAVEN_JAVA_EXE% -Xmx1024m %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %CLASSWORLDS_JAR% "-Dclassworlds.conf=%M2_HOME%\bin\m2.conf" "-Dmaven.home=%M2_HOME%" "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %CLASSWORLDS_LAUNCHER% %MAVEN_CMD_LINE_ARGS%
</code></pre>

How to set VM arguments for Jetty run from maven-jetty-plugin?

For example, I need to pass <code>-Xmx</code> arguments to Jetty run by the <code>mvn jetty:run</code> command.

How to control VM arguments for maven-jetty-plugin?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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如何从maven- Jetty -plugin为jetty运行设置VM参数？例如，我需要将-Xmx参数传递给由mvn jetty:run命令运行的Jetty。

问如何控制maven-jetty-plugin的VM参数？
EN

回答 9

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问如何控制maven-jetty-plugin的VM参数？
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