本文共 3260 字，大约阅读时间需要 10 分钟。

1、修改pom.xml

修改两处：

   
    jar
   

（2）修改<build></build>

           
                
                     
      
       org.springframework.boot
                      
      
       spring-boot-maven-plugin
                      
                          
       
        cn.hadron.db.DbApplication
                       
                      
                          
                               
         
         
          repackage
          
                            
                       
                  
             
        
   

如果此处不指定mainClass的话，很有可能就是项目可以打包成功，并且可以java -jar *.jar成功启动，但是访问不了任何服务。

2、打包

进到此项目的根目录，即pom.xml所在文件目录

mvn clean package

3、启动jar包

进入到jar所在目录位置，使用java -jar *.jar启动

...\target>java -jar db-0.0.1-SNAPSHOT.jar

4、页面访问

5、Linux服务器后端运行jar

[root@node opt]# nohup java -jar db-0.0.1-SNAPSHOT.jar > /tmp/db.log &[1] 31334[root@node opt]# nohup: ignoring input and redirecting stderr to stdout[root@node opt]#

[root@node opt]# tailf /tmp/db.log 2019-02-14 15:54:59.078  INFO 31334 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]2019-02-14 15:54:59.078  INFO 31334 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.14]2019-02-14 15:54:59.094  INFO 31334 --- [           main] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib]2019-02-14 15:54:59.204  INFO 31334 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/db]     : Initializing Spring embedded WebApplicationContext2019-02-14 15:54:59.205  INFO 31334 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2108 ms2019-02-14 15:54:59.747  INFO 31334 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'2019-02-14 15:55:00.075  INFO 31334 --- [           main] o.s.b.a.w.s.WelcomePageHandlerMapping    : Adding welcome page template: index2019-02-14 15:55:00.244  INFO 31334 --- [           main] o.s.s.c.ThreadPoolTaskScheduler          : Initializing ExecutorService 'taskScheduler'2019-02-14 15:55:00.363  INFO 31334 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path '/db'2019-02-14 15:55:00.368  INFO 31334 --- [           main] com.cntaiping.tpa.db.DbApplication       : Started DbApplication in 3.936 seconds (JVM running for 4.581)2019-02-14 15:55:38.391  INFO 31334 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/db]     : Initializing Spring DispatcherServlet 'dispatcherServlet'2019-02-14 15:55:38.392  INFO 31334 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'2019-02-14 15:55:38.404  INFO 31334 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 11 ms上传文件夹...

6、Linux查看jar进程

[root@node ~]# ps -ef | grep .jarroot      5565     1  0 Feb28 ?        00:01:38 java -jar db-0.0.1-SNAPSHOT.jarroot     26647 12566  0 09:49 pts/0    00:00:00 grep --color=auto .jar[root@node ~]#

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