maven scala plugin 使用教程笔记之jvmargs配置,自定义PRoPErties 在jvmArgs -D参数中使用

jvmArgs是什么

举个例子:

   $JAVA_ARGS.=“-Dresin.home=$SERVER_ROOT-server          -XMs2048M-Xmx2048M-Xmn512M-XX:PermSize=256M          -XX:MaxpermSize=256M-XX:+UseConcMarkSweepGC          -XX:MaxTenuringThreshold=7-XX:GCTimeRatio=19          -Xnoclassgc-XLOGgc:log/gc.log-XX:+PrintGCDetails          -XX:+PrintGCTimeStamps-XX:+UseCMSCompactAtFullCollection          -XX:CMSFullGCsBeforeCompaction=0”   

这是JVM参数调优时候的一些配置

java的System.getProperty

java的System.getProperty()方法默认可以获取的值:

| Key | Value|

| Java.version | Java 运行时环境版本|

| java.vendor | Java 运行时环境供应商 |

|java.vendor.url|Java 供应商的 URL|

|java.home|Java 安装目录|

|java.vm.specification.version|Java 虚拟机规范版本|

|java.vm.specification.vendor|Java 虚拟机规范供应商|

|java.vm.specification.name|Java 虚拟机规范名称|

|java.vm.version|Java 虚拟机实现版本|

|java.vm.vendor|Java 虚拟机实现供应商|

|java.vm.name|Java 虚拟机实现名称|

|java.specification.version|Java 运行时环境规范版本|

|java.specification.vendor|Java 运行时环境规范供应商|

|java.specification.name|Java 运行时环境规范名称|

|java.class.version|Java 类格式版本号|

|java.class.path|Java 类路径|

|java.library.path|加载库时搜索的路径列表|

|java.io.tmpdir|默认的临时文件路径|

|java.COMpiler|要使用的 JIT 编译器的名称|

|java.ext.dirs|一个或多个扩展目录的路径|

|os.name|操作系统的名称|

|os.Arch|操作系统的架构|

|os.version|操作系统的版本|

|file.separator|文件分隔符（在 UNIX 系统中是“/”）|

|path.separator|路径分隔符（在 UNIX 系统中是“:”）|

|line.separator|行分隔符（在 UNIX 系统中是“/n”）|

|user.name|用户的账户名称|

|user.home|用户的主目录|

|user.dir|用户的当前工作目录|

自定义properties 在jvmArgs -D参数中使用

 public class AutoKeyconfig {         public static final String AUTOKEY_PORT = "sword.autokey.port";      public static final int PORT_DEFAULT = 8204; }  

实现代码:

 String portStr = SwordConfigLoader.getProperty(AutoKeyConfig.AUTOKEY_PORT); int port = portStr != null ? Integer.parseint(portStr) : AutoKeyConfig.PORT_DEFAULT;  

maven build 生命周期配置jvmArgs

 <build>     <sourceDirectory>src/main/scala</sourceDirectory>     <plugins>         <plugin>             <groupId>org.scala-tools</groupId>             <artifactId>maven-scala-plugin</artifactId>             <configuration>                 <launchers>                     <launcher>                         <id>pdata</id>                         <mainClass>com.pdata.PDataApplication</mainClass>                         <!-- args are optional -->                         <!--<args>-->                         <!--<arg>arg1</arg>-->                         <!--</args>-->                         <!-- jvmArgs are optional -->                         <jvmArgs>                             <jvmArg>-XmX1024m</jvmArg>                             <jvmArg>-Dsword.autokey.port=9202</jvmArg>                         </jvmArgs>                     </launcher>                     <!-- you could define other launcher -->                 </launchers>             </configuration>             <executions>                 <execution>                     <id>compile-and-test-compile</id>                     <goals>                         <goal>compile</goal>                         <goal>testCompile</goal>                         <goal>run</goal>                     </goals>                 </execution>                 <execution>                     <id>doc</id>                     <phase>install</phase>                     <goals>                         <goal>doc</goal>                     </goals>                 </execution>             </executions>         </plugin>         <plugin>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-maven-plugin</artifactId>             <executions>                 <execution>                     <goals>                         <goal>repackage</goal>                     </goals>                 </execution>             </executions>         </plugin>         <plugin>             <groupId>org.apache.maven.plugins</groupId>             <artifactId>maven-dependency-plugin</artifactId>             <executions>                 <execution>                     <phase>package</phase>                     <goals>                         <goal>copy-dependencies</goal>                     </goals>                 </execution>             </executions>             <configuration>                 <includeScope>system</includeScope>                 <!--<outputDirectory>${project.build.directory}/${project.build.finalName}/lib</outputDirectory>-->             </configuration>         </plugin>     </plugins> </build>

这样,就可以直接使用如下命令动态注入sword.autokey.prot的值, 启动应用:

 mvn scala:run -Dlauncher=pdata