您需要自定义小部件集吗？如果您没有使用任何小部件插件，并且由于您是Vaadin的新手，我假设您还没有创建自己的小部件（？），您可以简单地使用Vaadin提供的预编译小部件集。为此，请从项目中删除任何xxx. gwt.xml文件，并将web.xml中对它的引用替换为com.vaadin.DefaultWidgetset。

web. xml：

<init-param>
    <name>widgetset</name>
    <value>com.vaadin.DefaultWidgetSet</value>
</init-param>

pom. xml：

<dependency>
    <groupId>com.vaadin</groupId>
    <artifactId>vaadin-client-compiled</artifactId>
    <version>7.1.9</version>    <!-- or whatever version you're using -->
</dependency>

如果你确实需要一个自定义的小部件集（如果你现在不需要，很有可能你会在未来需要一个），帮你自己一个忙，把它放在一个单独的项目中。根据我的经验，小部件集很少变化，所以为什么要把它包含在一个不断变化的项目中。上面提到的默认小部件集，由Vaadin提供，是构建一个的完美蓝图。只需构建你自己的，并从vaadin-client-编译. jar复制它的结构。你可以使用你最喜欢的maven构建助手，我的是汇编。只需创建一个maven项目，设置pom.xml，添加一个xxx.gwt.xml，并确保web.xml包含对它的引用。我自己的设置看起来像你下面看到的。

pom. xml：

<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <name>MyWidgetset</name>
    <groupId>com.company</groupId>
    <artifactId>mywidgetset</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <vaadin.version>7.1.9</vaadin.version>
        <vaadin.plugin.version>7.1.9</vaadin.plugin.version>
    </properties>

    <dependencies>
        <!-- vaadin -->
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-client</artifactId>
            <version>${vaadin.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-client-compiler</artifactId>
            <version>${vaadin.version}</version>
            <scope>provided</scope>
        </dependency>

        <!-- custom widgets (NOTE: addons without a widget do not belong here) -->
        <dependency>
            <groupId>org.vaadin.addons</groupId>
            <artifactId>filteringtable</artifactId>
            <version>0.9.3.v7</version>
        </dependency>
        <dependency>
            <groupId>org.vaadin.addons</groupId>
            <artifactId>popupbutton</artifactId>
            <version>2.3.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!-- vaadin update widgetset -->
            <plugin>
                <groupId>com.vaadin</groupId>
                <artifactId>vaadin-maven-plugin</artifactId>
                <version>${vaadin.plugin.version}</version>

                <configuration>
                    <extraJvmArgs>-Xmx512M -Xss1024k</extraJvmArgs>
                    <webappDirectory>${basedir}/target/VAADIN/widgetsets</webappDirectory>
                    <hostedWebapp>${basedir}/target/VAADIN/widgetsets</hostedWebapp>
                    <force>false</force>
                    <strict>true</strict>
                    <noServer>true</noServer>
                    <compileReport>true</compileReport>
                    <style>OBF</style>
                    <runTarget>http://localhost:8080/</runTarget>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>resources</goal>
                            <goal>update-widgetset</goal>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <appendAssemblyId>false</appendAssemblyId>
                    <descriptors>
                        <descriptor>src/main/resources/assembly.xml</descriptor>
                    </descriptors>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

        </plugins>
    </build>

    <repositories>
        <repository>
            <id>vaadin-addons</id>
            <url>http://maven.vaadin.com/vaadin-addons</url>
        </repository>
    </repositories>
</project>

汇编. xml：

<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">

    <id>build-my-widgetset-jar</id>
    <formats>
        <format>jar</format>
    </formats>

    <includeBaseDirectory>false</includeBaseDirectory>

    <fileSets>
        <fileSet>
            <directory>${basedir}/target/VAADIN/widgetsets</directory>
            <outputDirectory>/VAADIN/widgetsets</outputDirectory>
            <excludes>
                <exclude>WEB-INF/</exclude>
            </excludes>
        </fileSet>
    </fileSets>
</assembly>

MyWidgetset. gwt.xml：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC
    "-//Google Inc.//DTD Google Web Toolkit 1.7.0//EN"
    "http://google-web-toolkit.googlecode.com/svn/tags/1.7.0/distro-source/core/src/gwt-module.dtd">
<module>
    <inherits name="com.vaadin.DefaultWidgetSet" />

    <inherits name="org.tepi.filtertable.gwt.FilterTableWidgetset" />

    <inherits name="org.vaadin.hene.popupbutton.widgetset.PopupbuttonWidgetset" />

</module>

web. xml：

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">

    <display-name>MyWidgetset</display-name>

    <servlet>
        <servlet-name>MyWidgetset</servlet-name>
        <servlet-class>com.vaadin.server.VaadinServlet</servlet-class>
        <init-param>
            <param-name>ui</param-name>
            <param-value>com.company.mywidgetset.App</param-value>    <!-- use it for testing the widgetset-->
        </init-param>
        <init-param>
            <param-name>widgetset</param-name>
            <param-value>com.company.mywidgetset.MyWidgetset</param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>MyWidgetset</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>
</web-app>

项目结构：

|   pom.xml
|
\---src
    +---main
    |   +---java
    |   |   \---com
    |   |       \---company
    |   |           \---mywidgetset
    |   |                   App.java
    |   |                   MyWidgetset.gwt.xml
    |   |
    |   +---resources
    |   |       assembly.xml
    |   |
    |   \---webapp
    |       \---WEB-INF
    |               web.xml
    |
    \---test
        \---java

构建它，将jar作为项目中的依赖项，你就完成了。这将永久地将您从GWT称之为“小部件集编译”的大麻烦中释放出来。

为了减少小部件集的编译时间，您可以按照. gwt.xml文件并取消注释set-properties标记。

<!-- Uncomment the following to compile the widgetset for one browser only. 
    This can reduce the GWT compilation time significantly when debugging. The 
    line should be commented out before deployment to production environments. 
    Multiple browsers can be specified for GWT 1.7 as a comma separated list. 
    The supported user agents at the moment of writing were:   ie6,ie8,gecko,gecko1_8,safari,opera 
    The value gecko1_8 is used for Firefox 3 and later and safari is used for 
    webkit based browsers including Google Chrome. -->
<!-- <set-property name="user.agent" value="gecko1_8"/> -->

要创建一个新的vaadin-maven项目，您可以尝试使用vaadin 7插件新项目向导，该向导将使用ivy依赖管理创建一个新项目，创建项目后，右键单击项目并删除ivy依赖管理，然后右键单击-

只是不要编译任何小部件，使用默认的；为此，您必须设置以下文件：web. xml：

<init-param>
    <name>widgetset</name>
    <value>com.vaadin.DefaultWidgetSet</value>
</init-param>

或者在项目的UI实现中：

/**
 * Initial view in Vaadin
 */
@Theme("valo") 
@Widgetset("com.vaadin.DefaultWidgetSet")
public class MainUI extends UI
{

最后在pom. xml中只包含这些依赖项：

    <!-- Vaadin dependencies -->
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-server</artifactId>
        <version>${vaadin.version}</version>
    </dependency> 
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-client-compiled</artifactId>
        <version>${vaadin.version}</version> 
    </dependency>   
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-themes</artifactId>
        <version>${vaadin.version}</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.0.1</version> 
    </dependency> 

没别的了。我用这些解决了，我希望你也是。