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SpringBoot系列之—瘦身部署 #41

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johnnian opened this issue Nov 12, 2017 · 9 comments

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@johnnian
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commented Nov 12, 2017

一、前言

SpringBoot部署起来虽然简单,如果服务器部署在公司内网,速度还行,但是如果部署在公网(阿里云等云服务器上),部署起来实在头疼: 编译出来的 Jar 包很大,如果工程引入了许多开源组件(SpringCloud等),那就更大了。

这个时候如果想要对线上运行工程有一些微调,则非常痛苦, :(

二、瘦身前的Jar包

Tomcat在部署Web工程的时候,可以进行增量更新,SpringBoot也是可以的~

SpringBoot编译出来的Jar包中,磁盘占用大的,是一些外部依赖库(jar包),例如:

进入项目工程根目录,执行 mvn clean install 命令,得到的Jar包,用压缩软件打开,目录结构如下:

qq20171112-191453 2x

整个Jar包 18.18 MB, 但是 BOOT-INF/lib 就占用了将近 18 MB:

qq20171112-192041 2x

三、解决方法

步骤1: 正常编译JAR包,解压出lib文件夹

POM文件如下:

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId> 
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
		        <mainClass>com.johnnian.App</mainClass>
		        <layout>ZIP</layout>
            </configuration>
            <executions>
		    <execution>
		         <goals>
		             <goal>repackage</goal>
		         </goals>
		     </execution>
           </executions>
        </plugin>
     <plugins>
<build>

进入项目根目录,执行命令: mvn clean install

将编译后的Jar包解压,拷贝 BOOT-INF 目录下的lib文件夹 到目标路径;

步骤2: 修改pom.xml配置,编译出不带 lib 文件夹的Jar包

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId> 
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
		        <mainClass>com.johnnian.App</mainClass>
		        <layout>ZIP</layout>
		        <includes> 
			        <include>
			            <groupId>nothing</groupId>
			            <artifactId>nothing</artifactId>
			        </include>  
			    </includes>
		    </configuration>
		    <executions>
		        <execution>
		            <goals>
		                <goal>repackage</goal>
		            </goals>
		        </execution>
		    </executions>
        </plugin>
     <plugins>
<build>

配置完成后,再次执行编译:mvn clean install

生成的 Jar 包体积明显变小,如下所示, 外部的 jar 包已经不会被引入了:

qq20171112-193001 2x

步骤3: 运行编译后的Jar包

步骤1 解压出来的lib文件夹步骤2编译的jar包放在同一个目录, 运行下面命令:

java -Dloader.path=/path/to/lib -jar /path/to/springboot-jsp-0.0.1-SNAPSHOT.jar 

备注:

  • /path/to/改成实际的路径。
  • -Dloader.path=lib文件夹路径

最终目录文件结构是:

├── lib   #lib文件夹
└── springboot-jsp-0.0.1-SNAPSHOT.jar 

说明

1、通常,一个工程项目架构确定后,引入的jar包基本上不会变,改变的大部分是业务逻辑;

2、后面如果需要变更业务逻辑,只需要轻量地编译工程,大大提高项目部署的效率。

@johnnian johnnian added this to 框架 in Java Web Nov 12, 2017

@Linda-Tan

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commented Mar 29, 2018

我初步尝试是不行的,你确定是能正常运行的吗

@johnnian

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commented Mar 30, 2018

@Linda-Tan 我们公司的项目,SpringBoot的工程,都是以这种部署的。

请问,你那边无法运行,具体有报什么错吗? 是编译的时候有问题?还是运行的时候有问题?

@Linda-Tan

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commented Apr 3, 2018

我在windows 环境下 无法正常启动,说找不到loader.path

@johnnian

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commented Apr 6, 2018

@Linda-Tan 我在Windows下测试过,运行是没有问题的.

  1. 请按照上面文章的内容,再试一遍~
  2. 请检查-Dloader.path参数的路径是否写正确了?我教程上写的是Linux格式的路径,你要改成用Windows下的风格;

例如,我将制作好的包,放在 D:\test\ 目录下,运行下面命令

java -Dloader.path=D:\test\lib -jar D:\test\ springboot-jsp-0.0.1-SNAPSHOT.jar 
@Linda-Tan

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commented Apr 6, 2018

嗯嗯,用原来的命令提示符(CMD)是可以的,win10 默认用他的Powershell 是不支持的,MS很恶心。谢谢!

@foreveryang321

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commented Apr 27, 2018

enjoy

<plugin>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-maven-plugin</artifactId>
        <version>1.5.11.RELEASE</version>
	<configuration>
	    <layout>ZIP</layout>
	    <includes>
		<include>
		    <groupId>nothing</groupId>
		    <artifactId>nothing</artifactId>
		</include>
	    </includes>
	    <attach>false</attach>
	</configuration>
</plugin>
<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-dependency-plugin</artifactId>
        <version>3.0.2</version>
	<executions>
	    <execution>
		<id>copy-dependencies</id>
		<phase>package</phase>
		<goals>
		    <goal>copy-dependencies</goal>
		</goals>
		<configuration>
		    <type>jar</type>
		    <includeTypes>jar</includeTypes>
		    <includeScope>runtime</includeScope>
		    <outputDirectory>
			${project.build.directory}/lib
		    </outputDirectory>
		</configuration>
	    </execution>
	</executions>
</plugin>
java -Dloader.path=D:\test\lib\ -jar D:\test\ springboot-jsp-0.0.1-SNAPSHOT.jar
@Linda-Tan

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commented Apr 27, 2018

我发现这个并不能在spring cloud 中使用。 有些不要数据源的消费者,也会被加载数据源jar,导致无法启动

@clvspk

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commented Jan 16, 2019

能问下 你这是什么解压软件吗?

@johnnian

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commented Mar 29, 2019

能问下 你这是什么解压软件吗?

使用的是 : Dr.unarchiver.app

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