If your Spring BootJar doesn't work

Troubleshooting Spring Boot Jar Loading Issues

Have you encountered the problem of starting a new Spring Boot archive?

In general, innovation in this direction is not the first, there are no special standards. Therefore, many people rake problems and solve them on forums and stack overflows.

If you also encounter a problem, I will help you solve it. In this case, read on.

, BootJar . , .

. — JSP . JSP? , - , , .

( ):

/src/main/
    java/
    resources/
        static/
            some.html
        public/
    webapp/
        WEB-INF/jsp
            index.jsp
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

BootJar / BootWar, jsp BootJar . BootWar. , . , — , , , . BootRun , .

, : , .

, . BootJar. , … ! , 302 + 404 ( ). .

— , , , webjars. ???

. jsp BootJar, BootWar. … . , .

, . BootJar — . .

: Spring Boot , . — . ! .

. — BootJar (webjars), , , , , ! , .

— - static/, public/. , . jsp . , . , ( ), jsp . jsp ,

spring.resources.static-locations

.

, , , . , ( webapp/), , , — META-INF/resources, . BootJar. .

? -, -, , . — . , . , .

-? -, , , -, . , . , : — , , .

. . , , classpath.

, . ?

.

1. spring- . , , , jsp .
2. . : spring-, , — , , . , .
3. — BootJar.

. , , .

Gradle.

.

sourceSets {
    jsp {
        resources.source(sourceSets.main.resources);
        resources.srcDirs += ['src/main/webapp'];
    }
    jmh {
        .. ..
    }
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

task jsp(type: Jar, description: 'JSP Packaging') {
    archiveBaseName = 'jsp'
    group = "build"
    def art = sourceSets.jsp.output
    from(art) {
        exclude('META-INF')
        into('META-INF/resources/')
    }
    from(art) {
        include('META-INF/*')
        into('/')
    }
    dependsOn(processJspResources)
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

processJspResources , . :

bootJar {
    dependsOn(jsp)
    bootInf.with {
        from(jsp.archiveFile) {
            include('**/*.jar')
        }
        into('lib/')
    }
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

I could not find how to add it in another way (direct) - it is impossible to connect the jspImplementation config of the project itself depending on the dependencies, but I would like to. But if we still take it from another module, then we still do this:

artifacts {
    jspImplementation jsp
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

That's it, now we have a resource lib, which, according to all standards, the tomkat must load, and it loads. Run it like BootJar.