How to start up spring-boot application via command line

Question

I have a spring-boot application which I need to start up by going to the folder directory and start up my web application via command line  I have a class called Application java and the code inside it is as followed    SpringBootApplication scanBasePackages     com ubs tas topcat dashboard    public class Application extends SpringBootServletInitializer       private static final Logger LOGGER   LoggerFactory getLogger Application class getName         private static final Class lt Application gt  applicationClass   Application class        Override     protected SpringApplicationBuilder configure SpringApplicationBuilder application            return application sources applicationClass              public static void main String   args            LOGGER info  Starting               SpringApplication run Application class  args             I set up classpath then tried to run the command  java ApplicationUtility  but I m getting this error message  Could not find the main class  ApplicationUtility  Program will exist

User · Answer

1 Run Spring Boot app with java -jar command  To run your Spring Boot app from a command line in a Terminal window you can use java -jar command   This is provided your Spring Boot app was packaged as an executable jar file   java -jar target app-0 0 1-SNAPSHOT jar   2 Run Spring Boot app using Maven  You can also use Maven plugin to run your Spring Boot app  Use the below command to run your Spring Boot app with Maven plugin   mvn spring-boot run   3 Run Spring Boot App with Gradle  And if you use Gradle you can run the Spring Boot app with the following command   gradle bootRun

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You will need to build the jar file first  Here is the syntax to run the main class from a jar file   java -jar path to your jarfile jar fully qualified package Application

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I presume you are trying to compile the application and run it without using an IDE  I also presume you have maven installed and correctly added maven to your environment variable   To install and add maven to environment variable visit Install maven if you are under a proxy check out add proxy to maven  Navigate to the root of the project via command line and execute the command  mvn spring-boot run   The CLI will run your application on the configured port and you can access it just like you would if you start the app in an IDE   Note  This will work only if you have maven added to your pom xml

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Run Spring Boot app using Maven You can also use Maven plugin to run your Spring Boot app  Use the below example to run your Spring Boot app with Maven plugin  mvn spring-boot run  Run Spring Boot App with Gradle And if you use Gradle you can run the Spring Boot app with the following command  gradle bootRun

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One of the ways that you can run your spring-boot application from command line is as follows     1  First go to your project directory in command line  where is your project located     2  Then in the next step you have to create jar file for that  this can be done as  mvnw package  for WINDOWS OS   or   mvnw package  for MAC OS    this will    create jar file  for our application   3  jar file is created in the target sub-directory   4 Now go to target sub directory as jar was created inside of it   i e cd target  5  Now run the jar file in there      Use command java -jar name jar   name is the name of your created jar file    and there you go   you are done   Now you can run project in browser     http   localhost port number

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To run the spring-boot application  need to follow some step    Maven setup  ignore if already setup    a  Install maven from https   maven apache org download cgi  b  Unzip maven and keep in C drive  you can keep any location  Path location will be changed accordingly    c  Set MAVEN HOME in system variable     d  Set path for maven      Add Maven Plugin to POM XML   lt build gt      lt plugins gt        lt plugin gt          lt groupId gt org springframework boot lt  groupId gt          lt artifactId gt spring-boot-maven-plugin lt  artifactId gt         lt  plugin gt       lt  plugins gt     lt  build gt  Build Spring Boot Project with Maven     maven package   or              mvn install   mvn clean install  Run Spring Boot app using Maven        mvn spring-boot run   optional  Run Spring Boot app with java -jar command       java -jar target mywebserviceapp-0 0 1-SNAPSHOT jar

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If you re using gradle  you can use      gradlew bootRun

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Spring Boot provide the plugin with maven   So you can go to your project directory and run  mvn spring-boot run   This command line run will be easily when you re using spring-boot-devs-tool with auto reload restart when you have changed you application

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A Spring Boot project configured through Maven can be run using the following command from the project source folder  mvn spring-boot run

[java] How to start up spring-boot application via command line?

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