pom配置如下:

之前发布boot项目的时候，改动一点东西，就需要将整个项目重新打包部署，十分不便，故把依赖lib从项目分离出来，每次部署只需要发布代码即可。

步骤1：不使用spring-boot-maven-plugin

1.不使用spring-boot-maven-plugin,采用maven-jar-plugin
原因：spring-boot-maven会将项目所依赖的jar包都打入BOOT-INF/lib下

        <plugins>
        	<!--
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
			-->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib</classpathPrefix>
                            <mainClass>com.xxx.sample.SampleApplication</mainClass>
                        </manifest>
                    </archive>
                    <excludes>
                        <exclude>*.sh</exclude>
                        <exclude>*.bat</exclude>
                        <exclude>application.properties</exclude>
                    </excludes>
                </configuration>
            </plugin>
           

上述xml文件中：

1. <addClasspath>表示需要将所需依赖加入到类构建路径
2. <classpathPrefix>指定生成的MANIFEST.MF文件中Class-Path依赖前面都加上路径lib,构建出lib/xx.jar，如果不加，在启动项目时无法找到所依赖的jar，会导致启动失败。
3. 在打包时将application.properties文件排除在jar包之外，jar包中不必包含配置文件，然后在jar包同级目录下新建一个文件夹config。将配置文件放到config中。

这是因为SpringBoot读取配置有一个优先级，放在jar包外面config目录优先级最高，主要是便于从外部修改配置，而不是改jar包中的application.yml文件。优先级如下：
　　　　1.当前目录的config目录下
　　　　2.当前目录
　　　　3.classpath的config目录下
　　　　4.classpath的根目录
　　　　
这样就实现了配置文件外置，可随时修改项目配置

步骤2：配置maven-dependency-plugin插件

2.将所依赖的jar在打包时拷贝到项目jar外的lib文件夹中

<plugin>
       <groupId>org.apache.maven.plugins</groupId>
       <artifactId>maven-dependency-plugin</artifactId>
       <executions>
           <execution>
                <id>copy-lib</id>
                <phase>package</phase>
                <goals>
                    <goal>copy-dependencies</goal>
                </goals>
                <configuration>
                    <outputDirectory>target/lib</outputDirectory>
                    <excludeTransitive>false</excludeTransitive>
                    <stripVersion>false</stripVersion>
                    <includeScope>runtime</includeScope>
                </configuration>
           </execution>
       </executions>
</plugin>

maven-dependency-plugin插件将所有的依赖都放入到target/lib文件夹下

步骤3：配置maven-assembly-plugin插件

3.配置assembly文件，配置具体的需要打包的资源

在pom.xml中配置maven-assembly-plugin插件，在assembly插件中配置assembly.xml文件的位置

		 <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <!-- The configuration of the plugin -->
                <configuration>
                    <descriptors>
                        <descriptor>src/main/resources/config/assembly.xml</descriptor>
                    </descriptors>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
          </plugin>
       

<descriptor>标签指定了assembly.xml文件的位置

assembly.xml文件的配置如下：

    <id>package</id>
    <formats>
        <format>zip</format>
    </formats>
    <includeBaseDirectory>true</includeBaseDirectory>
    <fileSets>
        <!-- 把项目相关的说明文件，打包进zip文件的根目录 -->
        <fileSet>
            <directory>${project.basedir}</directory>
            <outputDirectory>/</outputDirectory>
            <includes>
                <!--<include>*.sql</include>-->
                <include>*.bat</include>
                <include>*.md</include>
                <!--<include>README*</include>-->
                <!--<include>LICENSE*</include>-->
                <!--<include>NOTICE*</include>-->
                <!--<include>build.info</include>-->
            </includes>
        </fileSet>
		<fileSet>
            <directory>${project.build.directory}/lib</directory>
            <outputDirectory>/lib</outputDirectory>
            <includes>
                <include>*.jar</include>
            </includes>
        </fileSet>
        <fileSet>
            <directory>${project.basedir}/src/main/resources</directory>
            <outputDirectory>/config</outputDirectory>
            <includes>
                <include>application.properties</include>
                <include>logback.xml</include>
                <include>*.sql</include>
            </includes>
        </fileSet>

        <!-- 把项目自己编译出来的jar文件，打包进zip文件的根目录 -->
        <fileSet>
            <directory>${project.build.directory}</directory>
            <outputDirectory>/</outputDirectory>
            <includes>
                <include>*.jar</include>
            </includes>
        </fileSet>
    </fileSets>

上述配置会将application.properties和logback文件放置在jar同级目录下

打成包后的目录层级：

--sam
 --config
 	--application.properties
 	--logback.xml
 --log
 --lib
 --cameraIndexCode
 --sam.jar

在项目运行时会自动在sam.jar的同级目录下生成一个log文件夹（这个是在logback.xml中配置的）
logback.xml的配置如下：

    <property name="LOG_HOME" value="log"/>
    <property name="component" value="sam"/>
    <property name="segment" value="hello"/>
    <property name="samSqlLevel" value="INFO"/>

    <property name="defaultPattern"
              value="%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX} %level ${component} [%thread] [%logger{50}:%line] %msg%n"/>

    <contextName>${component}</contextName>
    <!--控制台输出日志-->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <charset>UTF-8</charset>
            <pattern>${defaultPattern}</pattern>
        </encoder>
    </appender>

    <!-- 文件输出日志 (文件大小策略进行文件输出，超过指定大小对文件备份)-->
    <appender name="FILE-debug" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>TRACE</level>
        </filter>
        <File>${LOG_HOME}/${component}.debug.log</File>
        <!--压缩的策略-->
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <FileNamePattern>${LOG_HOME}/${component}.debug.log.%d{yyyy-MM-dd}.%i.zip</FileNamePattern>
            <maxHistory>7</maxHistory>
            <MaxFileSize>100MB</MaxFileSize>
        </rollingPolicy>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <charset>UTF-8</charset>
            <pattern>${defaultPattern}</pattern>
        </encoder>
    </appender>
    <appender name="FILE-error" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>ERROR</level>
        </filter>
        <File>${LOG_HOME}/${component}.error.log</File>
        <!--压缩的策略-->
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <FileNamePattern>${LOG_HOME}/${component}.error.log.%d{yyyy-MM-dd}.%i.zip</FileNamePattern>
            <maxHistory>7</maxHistory>
            <MaxFileSize>100MB</MaxFileSize>
        </rollingPolicy>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <charset>UTF-8</charset>
            <pattern>${defaultPattern}</pattern>
        </encoder>
    </appender>

    <appender name="FILE-sql" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>TRACE</level>
        </filter>
        <File>${LOG_HOME}/${component}.sql.log</File>
        <!--压缩的策略-->
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <FileNamePattern>${LOG_HOME}/${component}.sql.log.%d{yyyy-MM-dd}.%i.zip</FileNamePattern>
            <maxHistory>7</maxHistory>
            <MaxFileSize>100MB</MaxFileSize>
        </rollingPolicy>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <charset>UTF-8</charset>
            <pattern>${defaultPattern}</pattern>
        </encoder>
    </appender>
    <logger name="org.springframework" level="ERROR" addtivity="false">
        <appender-ref ref="FILE-error"/>
    </logger>
    <logger name="com.xxx.sample" level="INFO" addtivity="false">
        <appender-ref ref="FILE-debug"/>
    </logger>
    <logger name="dao" level="${helloSqlLevel}" addtivity="false">
        <appender-ref ref="FILE-sql"/>
    </logger>

    <root level="WARN">
        <appender-ref ref="STDOUT"/>
    </root>

上述配置的文件输出目录为${LOG_HOME}/ ${component}也就是log/sam.xx.log,这个log文件夹是会生成在jar的同级目录下.
需要在application.properties文件中设置日志配置文件所在位置

logging.config=logback.xml