Spring Boot, update frontend without restarting the application

Question

In the Spring Boot make the frontend part update without restarting the application?

What do you mean specifically by "frontend"? JSPs? Thymeleaf? HTML + JS files? — Makoto, Jun 14 '14 at 16:28

score 11 · Answer 1 · edited Feb 10 '21 at 20:13

11

Best solution i found for static webpages and css is https://stackoverflow.com/a/39334398/6467734 and for loading code (including jsp) without restarting the server you can use Spring Boot Devtools dependency

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-devtools</artifactId>
    <optional>true</optional>
</dependency>

edited Feb 10 '21 at 20:13

rolve

9,410
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answered May 25 '17 at 05:00

Amrut Prabhu

119
1
5

score 5 · Accepted Answer · answered Jun 14 '14 at 21:12

I'm an Eclipse user (via Spring Tool Suite) and I never have any problems with reloading static content if the app is running in debug mode. Just right click on the main class and "Debug As->Java App" (or "Spring Boot App", it's the same). You have to also ensure that the workspace is configured to "Build Automatically", but that is the default as far as I know.

I can't offer such specific advice for users of other IDEs, but I'm sure they all have the same feature.

score 4 · Answer 3 · edited Nov 22 '19 at 14:44

In the Intellij IDEA run up your project in Debug mode and you will get the same effect.

Or externalize your static .

@Configuration
public class MvcConfig extends WebMvcConfigurerAdapter {

    private String extStaticPath = "/var/www/site1/";

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/static/**")
                .addResourceLocations(extStaticPath)
                .setCachePeriod(0);
    }
}

score 2 · Answer 4 · answered Feb 05 '20 at 11:27

2

for JSP files try to set server.jsp-servlet.init-parameters.development=true

answered Feb 05 '20 at 11:27

arbuzov

853
6
10

Bro, you saved my life. – wonsuc Nov 23 '21 at 06:44

score 1 · Answer 5 · answered Jun 09 '16 at 13:23

1

You can try developer tools from Spring boot. Applications that use spring-boot-devtools will automatically restart whenever files on the classpath change. More info how it works here

answered Jun 09 '16 at 13:23

nav3916872

940
12
18

score 0 · Answer 6 · answered Dec 22 '19 at 05:55

Add the following to src/main/resources/application.properties:

spring.resources.static-locations[0]=file:src/main/resources/static/
spring.resources.static-locations[1]=classpath:/static/

The "file:" causes the content to be reloaded on refreshing the browser

Alternatively, the file resource locations can be discovered at runtime and added programmatically. I hope that helps.

Spring Boot, update frontend without restarting the application

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