Spring Boot + GWT 嵌入式配置 [英] Spring Boot + GWT embedded configuraiton

问题描述

我想配置Spring Boot Embedded Servlet Container + GWT.我想要的方式是创建一个 jar/war 文件，它只包含已编译的 gwt 文件 &静态资源.我想从 lib/* 加载 jars，并从 classpath 加载配置文件.

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.

我找不到任何工作示例.实际上有一个，https://github.com/Ekito/spring-boot-gwt，但是所有的依赖项和配置仍在战争中.

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.

有人可以提出解决方案吗?

Can someone suggest a solution ?

推荐答案

经过长时间的搜索&测试，这是我想出的解决方案:

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>

```

我的项目结构和原项目一样，https://github.com/Ekito/spring-boot-gwt，除了一些小改动:

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

• 代替 webapp 文件夹，我有 src/main/resources/public 文件夹和 html &css 文件在那里.
• 不需要 web.xml 文件，spring-boot 会处理它.
• 不需要 WEB-INF 文件夹.

因此，我有一个可运行的 jar，但由 org.springframework.boot.loader.PropertiesLauncher 运行.单个 jar 按预期工作，Tomcat 不按此处所述工作:http://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-developing-web-applications.html#boot-features-jsp-limitations.

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.

另外，我可以将 lib 文件夹移到 jar 文件之外，但是为了设置 loader.path 属性，我需要将它放到 jar 文件中的 application.properties 中.我应该可以使用 -Dloader.path 但没有用.

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.

我会与 Spring 团队核实.但到目前为止，它很有希望.

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

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