Spring boot app does not serve static resources after packaging into jar

Question

I have a application that work perfectly fine when started via ide or command line: mvn spring-boot:run. But when i package it into jar, I cannot access static resources(404 not found). I did not want to store static files in resource fouler so i don`t have to reload the server each time i need to change static file. So i used this plugin in my pom.xml:

              <plugin>
                <artifactId>maven-resources-plugin</artifactId>
                <version>2.6</version>
                <executions>
                    <execution>
                        <id>copy-resources</id>
                        <phase>validate</phase>
                        <goals>
                            <goal>copy-resources</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${basedir}/target/classes/static</outputDirectory>
                            <resources>
                                <resource>
                                    <directory>src/main/webapp</directory>
                                    <filtering>true</filtering>
                                </resource>
                            </resources>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

I can see that files are being copied in two the directory "static". This is my configuration of resource handler:

    @Configuration
    @EnableWebMvc
    public class WebMvcConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/**").addResourceLocations("/");
    }

Controllers RequestMappings are working fine, problems are only with the static resources.

For what it's worth, it's usual with Boot to simply put the resources in a directory `static` or `public` in the resources directory and let Boot's default MVC configuration handle registration. You could cut all of this code. — chrylis -cautiouslyoptimistic-, Aug 30 '16 at 16:22
is the plugin executed? Can you see it in the output log? Did you define it in `build/plugins` or `build/pluginManagement/plugins`? — A_Di-Matteo, Aug 30 '16 at 16:23
@A_Di-Matteo , i define it in build/plugins, and yeah it works, i can open the jar with winRar and see the static folder in there with all files from webapp folder — Dmitrij Kostyushko, Aug 30 '16 at 16:33
@chrylis yes, but will i still be able to edit my files without a need to restart the server? — Dmitrij Kostyushko, Aug 30 '16 at 16:35
That depends on how you launch. I launch from Eclipse with workspace resolution and don't have any problems. — chrylis -cautiouslyoptimistic-, Aug 30 '16 at 16:41

score 7 · Accepted Answer · answered Aug 30 '16 at 17:30

7

You should supply multiple resource locations for resolving:

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/**").addResourceLocations("/", "classpath:/static/");
}

answered Aug 30 '16 at 17:30

Alexey Soshin

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thanks man, this is really useful, i did not even knew, that it was possible to provide multiple locations – Dmitrij Kostyushko Aug 30 '16 at 17:49

goat · Answer 2 · 2018-01-03T04:02:10.357

0

For me, static resources stop serving up when I add the @EnableWebMvc annotation to the WebMvcConfigurerAdapter class. Without it, it works fine.

edited Jan 03 '18 at 04:02

answered Jan 03 '18 at 03:52

goat

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Spring boot app does not serve static resources after packaging into jar

2 Answers2

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