gwtspring-bootembeddedwebserver

Spring Boot + GWT embedded configuraiton


I want to configure Spring Boot Embedded Servlet Container + GWT. The way I want is either create a jar/war file that just contains the compiled gwt files & static resources. I want to load jars from lib/* and config files from classpath.

I couldn't find any working example. There is one actually, https://github.com/Ekito/spring-boot-gwt, but all the dependencies and configs are still in the war.

Can someone suggest a solution ?


Solution

  • After long search & test, here is the solution that I come up with:

    ```

    <!-- POM -->
    <modelVersion>4.0.0</modelVersion>
    <groupId>fr.ekito.gwt</groupId>
    <artifactId>gwt-boot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>Ekito Spring Boot GWT WebApp</name>
    
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.2.5.RELEASE</version>
    </parent>
    
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <start-class>fr.ekito.gwt.server.ServerApplication</start-class>
        <java.version>1.7</java.version>
    
        <gwtVersion>2.6.0</gwtVersion>
        <googleGin>2.1.2</googleGin>
        <outputFolder>${project.build.directory}/${artifactId}</outputFolder>
    </properties>
    
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-undertow</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>io.undertow</groupId>
                    <artifactId>undertow-websockets-jsr</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
        </dependency>
    
        <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-user</artifactId>
            <version>${gwtVersion}</version>
        </dependency>
        <dependency>
            <groupId>com.google.gwt.inject</groupId>
            <artifactId>gin</artifactId>
            <version>${googleGin}</version>
        </dependency>
    </dependencies>
    
    
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>${start-class}</mainClass>
                    <layout>ZIP</layout>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>gwt-maven-plugin</artifactId>
                <version>${gwtVersion}</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <runTarget>GwtWebApp.html</runTarget>
                    <persistentunitcachedir>${project.build.directory}</persistentunitcachedir>
                    <deploy>${project.build.directory}/gwt-deploy</deploy>
                    <webappDirectory>${project.build.directory}/classes/public</webappDirectory>
                </configuration>
            </plugin>
        </plugins>
    </build>
    

    ```

    my project structure is is same with original project, https://github.com/Ekito/spring-boot-gwt, except some little changes:

    As a result, I have a runable jar, but run by org.springframework.boot.loader.PropertiesLauncher. Single jar works as expected, Tomcat doesnt work as stated here: http://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-developing-web-applications.html#boot-features-jsp-limitations.

    Also, I can move the lib folder outside the jar file, but I in order to set the loader.path property, I need to put it to application.properties inside the jar file. I should be able to use -Dloader.path but didn't work.

    I'll check with spring team. But so far, it's promising.