Maven GWT 2.0和Eclipse [英] Maven GWT 2.0 and Eclipse

查看：100 发布时间：2017/7/26 22:12:51 java eclipse maven-2 gwt

本文介绍了Maven GWT 2.0和Eclipse的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

有没有人知道使用maven和eclipse的新版本的GWT创建一个项目的良好指南？我遇到很多问题让他们一起玩得很好。

为什么值得，我可以使用maven eclipse插件创建一个工程正常的gwt项目，但将其移植到maven不起作用（所以这个指南会很好）。

同样，我可以使用maven插件（gwt-maven-plugin），但是当我导入到eclipse（import - > materialize maven项目）时，它不会被确认为GWT项目...

感谢

解决方案

编辑：我已经通过OP提供的其他步骤更新了我的答案。对于详细信息，请点击OP。

我刚刚打破了我的Eclipse安装程序，试图安装最新版本的Google Plugin for Eclipse（对于GWT 2.0），所以我可以' t确认一切，但我们假设满足以下先决条件：

Eclipse 3.5

Google插件对于Eclipse（从 http://dl.google.com/eclipse/plugin/3.5，请参阅说明）

m2eclipse Eclipse插件（从 http://m2eclipse.sonatype.org/update 安装）

您尝试过：

从Eclipse创建一个新项目（ New> Other ... ，然后选择 Maven Project ，然后选择 gwt-maven-plugin 原型）。

编辑生成的 pom.xml ，将 gwt.version 属性更新为 2.0.0 （已在中央repo发布），~~添加 Codehaus Snapshot 存储库~~，并将 gwt-maven-plugin 版本设置为 ~~1.2-SNAPSHOT （版本1.2不在中央发布，这应该会很快发生）~~ 1.2 （也已经在中央发布）。 >

将< runTarget> 添加到gwt-maven-plugin配置中，如使用Google Eclipse插件。

按照上一步中提到的页面配置maven-war-plugin。

~~通过设置使用Google Web Toolkit 复选框~~，从项目首选项手动启用项目的GWT步骤是不必要的，因为您将使用Maven运行配置构建/运行，而不是Eclipse的GWT插件。

这是我的 pom.xml 实际上如下所示：

  ;？xml version =1.0encoding =UTF-8？> 
< project xmlns =http://maven.apache.org/POM/4.0.0xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
 xsi：schemaLocation =http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd\"> 
<！ -  
 GWT-Maven原型生成POM 
  - > 
< modelVersion> 4.0.0< / modelVersion> 
< groupId> com.mycompany.demo< / groupId> 
< artifactId> my-gwtapp< / artifactId> 
< packaging> war< / packaging> 
< version> 0.0.1-SNAPSHOT< / version> 
< name> gwt-maven-archetype-project< / name> 
 
< properties> 
 
<！ - 方便在一个地方定义GWT版本 - > 
< gwt.version> 2.0.0< / gwt.version> 
 
<！ - 告诉编译器我们可以使用1.5  - > 
< maven.compiler.source> 1.5< /maven.compiler.source> 
< maven.compiler.target> 1.5< /maven.compiler.target> 
 
< / properties> 
 
<依赖关系> 
 
<！ -  GWT依赖关系（来自中央repo） - > 
<依赖关系> 
< groupId> com.google.gwt< / groupId> 
< artifactId> gwt-servlet< / artifactId> 
< version> $ {gwt.version}< / version> 
< scope>运行时< / scope> 
< / dependency> 
<依赖关系> 
< groupId> com.google.gwt< / groupId> 
< artifactId> gwt-user< / artifactId> 
< version> $ {gwt.version}< / version> 
< scope>已提供< / scope> 
< / dependency> 
 
<！ -  test  - > 
<依赖关系> 
< groupId> junit< / groupId> 
< artifactId> junit< / artifactId> 
< version> 4.4< / version> 
< scope> test< / scope> 
< / dependency> 
< / dependencies> 
 
< build> 
< outputDirectory> war / WEB-INF / classes< / outputDirectory> 
< plugins> 
< plugin> 
< groupId> org.codehaus.mojo< / groupId> 
< artifactId> gwt-maven-plugin< / artifactId> 
< version> 1.2< / version> 
<执行> 
< execution> 
< goals> 
< goal> compile< / goal> 
< goal> generateAsync< / goal> 
< goal> test< / goal> 
< / goals> 
< / execution> 
< / executions> 
< configuration> 
< runTarget> com.mycompany.demo.gwt.Application / Application.html< / runTarget> 
< / configuration> 
< / plugin> 
<！ -  
如果要使用mergewebxml生成的目标/ web.xml文件，
告诉war插件来使用它。 
此外，从这里最后的工件排除您想要的内容。 
< plugin> 
< groupId> org.apache.maven.plugins< / groupId> 
< artifactId> maven-war-plugin< / artifactId> 
< configuration> 
< webXml> target / web.xml< / webXml> 
< warSourceExcludes> .gwt-tmp / **< / warSourceExcludes> 
< / configuration> 
< / plugin> 
  - > 
< plugin> 
< groupId> org.apache.maven.plugins< / groupId> 
< artifactId> maven-war-plugin< / artifactId> 
< version> 2.0.2< / version> 
< configuration> 
< warSourceDirectory> war< / warSourceDirectory> 
< webXml> src / main / webapp / WEB-INF / web.xml< / webXml> 
< / configuration> 
< / plugin> 
< / plugins> 
< / build> 
 
< / project>

运行 gwt：eclipse m2eclipse Maven2> build ...）设置您的环境并为您的GWT模块创建启动配置。

运行 gwt：compile gwt：run 在GWT托管模式下编译和运行GWT模块。

Does anyone know of a good guide for creating a project with the new 2.0 release of GWT using maven and eclipse? I am running into a lot of problems getting them to play nicely together.

For what it's worth, I can create a gwt project using the maven eclipse plugin which works fine, but porting it to maven doesn't work (so a guide for this would be great).

Likewise, I can use the maven plugin (gwt-maven-plugin), but when I import it to eclipse (import -> materialize maven projects), it does not get recognised as a GWT project...

Thanks

解决方案

EDIT: I've updated my answer with additional steps provided by the OP. Credits to the OP for the details.

I just broke my Eclipse setup trying to install the latest version of the Google Plugin for Eclipse (for GWT 2.0) so I can't confirm everything but, let's assume the following prerequisites are fulfilled:

Eclipse 3.5
Google Plugin for Eclipse (installed from http://dl.google.com/eclipse/plugin/3.5, see instructions)
m2eclipse Plugin for Eclipse (installed from http://m2eclipse.sonatype.org/update)

Did you try to:

Create a new project from Eclipse (New > Other... then select Maven Project and choose the gwt-maven-plugin archetype).
Edit the generated pom.xml, update the gwt.version property to 2.0.0 (which has been released in the central repo), ~~add the Codehaus Snapshot repository~~ and set the gwt-maven-plugin version to ~~1.2-SNAPSHOT (the version 1.2 isn't released in central, this should happen soon)~~ 1.2 (which has been released in central too).
Add a <runTarget> to the gwt-maven-plugin configuration as documented in Using the Google Eclipse Plugin.
Configure the maven-war-plugin as documented in the page mentioned in the previous step.
~~Manually enable GWT on the project from project preference by setting the Use Google Web Toolkit checkbox~~ This step is unnecessary since you'll be building/running with a Maven run configuration, not the GWT Plugin for Eclipse.

This is how my pom.xml actually looks like:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <!--
    GWT-Maven archetype generated POM
  -->
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mycompany.demo</groupId>
  <artifactId>my-gwtapp</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>gwt-maven-archetype-project</name>

  <properties>

      <!-- convenience to define GWT version in one place -->
      <gwt.version>2.0.0</gwt.version>

      <!--  tell the compiler we can use 1.5 -->
      <maven.compiler.source>1.5</maven.compiler.source>
      <maven.compiler.target>1.5</maven.compiler.target>

  </properties>

  <dependencies>

    <!--  GWT dependencies (from central repo) -->
    <dependency>
      <groupId>com.google.gwt</groupId>
      <artifactId>gwt-servlet</artifactId>
      <version>${gwt.version}</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>com.google.gwt</groupId>
      <artifactId>gwt-user</artifactId>
      <version>${gwt.version}</version>
      <scope>provided</scope>
    </dependency>

    <!-- test -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.4</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <outputDirectory>war/WEB-INF/classes</outputDirectory>
    <plugins>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>gwt-maven-plugin</artifactId>
        <version>1.2</version>
        <executions>
          <execution>
            <goals>
              <goal>compile</goal>
              <goal>generateAsync</goal>
              <goal>test</goal>
            </goals>
          </execution>
        </executions>
        <configuration>
          <runTarget>com.mycompany.demo.gwt.Application/Application.html</runTarget>
        </configuration>
      </plugin>
      <!--
          If you want to use the target/web.xml file mergewebxml produces,
          tell the war plugin to use it.
          Also, exclude what you want from the final artifact here.
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <configuration>
                    <webXml>target/web.xml</webXml>
                    <warSourceExcludes>.gwt-tmp/**</warSourceExcludes>
                </configuration>
            </plugin>
            -->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-war-plugin</artifactId>
        <version>2.0.2</version>
        <configuration>
          <warSourceDirectory>war</warSourceDirectory>
          <webXml>src/main/webapp/WEB-INF/web.xml</webXml>
        </configuration>
      </plugin>    
    </plugins>
  </build>

</project>

Run the gwt:eclipse goal (using m2eclipse Maven2 > build...) to setup your environment and create the launch configuration for your GWT modules.

Run gwt:compile gwt:run to compile and run a GWT module in the GWT Hosted mode.

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