三十九、如何单独发布jar包

想实现一种功能，任何需要的时候就在服务器上运行。可用把程序打个jar包传到服务器上，通过命令行触发。（当然也可以有其他实现方式，比如写个.do的程序，通过在页面输入链接请求触发）

具体步骤如下：

一、New个Maven Project

在工程的pom文件中要包含<packaging>jar</packaging>、依赖的jar包、build部分如下

<build><finalName>third</finalName><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-eclipse-plugin</artifactId><version>2.5.1</version><configuration><downloadSources>true</downloadSources><downloadJavadocs>true</downloadJavadocs><encoding>UTF-8</encoding></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-jar-plugin</artifactId><configuration><archive><manifest><addClasspath>true</addClasspath><classpathPrefix>lib/</classpathPrefix><mainClass>com.taofen8.task.client.main.ClientMain</mainClass></manifest><manifestEntries><Class-Path>config/</Class-Path></manifestEntries></archive><excludes><exclude>config-task-client.properties</exclude></excludes></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-dependency-plugin</artifactId><executions><execution><id>copy</id><phase>package</phase><goals><goal>copy-dependencies</goal></goals><configuration><outputDirectory>${project.build.directory}/lib</outputDirectory><overWriteReleases>false</overWriteReleases><overWriteSnapshots>false</overWriteSnapshots><overWriteIfNewer>true</overWriteIfNewer></configuration></execution></executions></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-resources-plugin</artifactId><version>2.3</version><executions><execution><id>copy-resources</id><phase>package</phase><goals><goal>copy-resources</goal></goals><configuration><encoding>UTF-8</encoding><outputDirectory>${project.build.directory}/config</outputDirectory><resources><resource><directory>src/main/resources</directory><includes><include>config-task-client.properties</include></includes><filtering>true</filtering></resource></resources></configuration></execution></executions></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-javadoc-plugin</artifactId><inherited>false</inherited><configuration><aggregate>true</aggregate><breakiterator>true</breakiterator><charset>UTF-8</charset><docencoding>UTF-8</docencoding><windowtitle>TOP ${project.version} API Documentation</windowtitle><doctitle>TOP ${project.version} API Documentation</doctitle><encoding>UTF-8</encoding><excludePackageNames></excludePackageNames><stylesheetfile>stylesheet.css</stylesheetfile><links><link>http://java.sun.com/j2se/1.5.0/docs/api/</link></links></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-source-plugin</artifactId><executions><execution><id>attach-sources</id><goals><goal>jar</goal></goals></execution></executions></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-surefire-plugin</artifactId><configuration><includes><include>**/*Test.java</include></includes><skipTests>true</skipTests></configuration></plugin><plugin><artifactId>maven-compiler-plugin</artifactId><version>2.3.2</version><configuration><source>1.6</source><target>1.6</target><encoding>UTF-8</encoding></configuration></plugin></plugins><resources><resource><directory>src/main/resources</directory><includes><include>**/*.xml</include><include>**/*.properties</include></includes></resource></resources><pluginManagement><plugins><!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the Maven build itself.--><plugin><groupId>org.eclipse.m2e</groupId><artifactId>lifecycle-mapping</artifactId><version>1.0.0</version><configuration><lifecycleMappingMetadata><pluginExecutions><pluginExecution><pluginExecutionFilter><groupId>org.apache.maven.plugins</groupId><artifactId>maven-dependency-plugin</artifactId><versionRange>[2.1,)</versionRange><goals><goal>copy-dependencies</goal></goals></pluginExecutionFilter><action><ignore></ignore></action></pluginExecution><pluginExecution><pluginExecutionFilter><groupId>org.apache.maven.plugins</groupId><artifactId>maven-resources-plugin</artifactId><versionRange>[2.3,)</versionRange><goals><goal>testResources</goal><goal>copy-resources</goal><goal>resources</goal></goals></pluginExecutionFilter><action><ignore></ignore></action></pluginExecution></pluginExecutions></lifecycleMappingMetadata></configuration></plugin></plugins></pluginManagement></build>

二、代码

新建个包，写好要的新功能。下面这段实例代码包含一个参数，是为了运行的时候可以根据具体情况来运行，更灵活。

public class ClassDemo {String month = System.getProperty("month");public static void methodDemo(String month){//功能}public static void main(String[] args){methodDemo(1);}}

三、上传

(1)打包代码mvn  package，在工程的target目录下有工程名.jar和lib。

(2)在服务器的某个目录下创建个新目录，在此目录下创建个lib目录，将工程名.jar和lib里依赖的jar包都rz上传到此lib目录下。同时在此目录下创建个run.sh,内容如下：

java 内存大小 -classpath jar包列表 -Dmonth=入参值   全类名

注意jar包之间用“：“分隔。

java -Xmx512m -Xms512m -classpath ./lib/aliyun-openservices-1.0.10.jar:./lib/commons-codec-1.4.jar:./lib/commons-logging-1.1.1.jar:./lib/httpclient-4.1.3.jar:./lib/httpcore-4.1.4.jar:./lib/jdom-1.1.jar:./lib/third.jar -Dmonth=7 com.nvshen.aliyun.ClassDemo

(3)运行sudo ./run.sh  或者后台运行把日志打出来sudo nohup ./run.sh > /home/www/logs/nvshen/job/imageSync.log &