您是否需要自定义微件集？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 中对该文件的引用替换为 com.vaadin.DefaultWidgetset。
网页.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>
如果您确实需要一个自定义小部件集（如果您现在不需要，那么您很可能还需要一个），请帮自己一个忙，并将其放在一个单独的项目中。根据我的经验，小部件集很少变化，所以为什么要将其包含在不断变化的项目中。上面提到的默认小部件集，由Vaadin提供，是构建一个窗口小部件的完美蓝图。只需构建自己的结构，并从vaadin-client编译.jar复制其结构。你可以使用你最喜欢的maven构建助手，我的是组装。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就像你在下面看到的一样。
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>${basedir}/target/VAADIN/widgetsets</hostedWebapp>
<force>false</force>
<strict>true</strict>
<noServer>true</noServer>
<compileReport>true</compileReport>
<style>OBF</style>
<runTarget>http://localhost:8080/</runTarget>
</configuration>
<executions>
<execution>
<goals>
<goal>resources</goal>
<goal>update-widgetset</goal>
<goal>compile</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.4</version>
<configuration>
<appendAssemblyId>false</appendAssemblyId>
<descriptors>
<descriptor>src/main/resources/assembly.xml</descriptor>
</descriptors>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>vaadin-addons</id>
<url>http://maven.vaadin.com/vaadin-addons</url>
</repository>
</repositories>
</project>
组装.xml：
<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
<id>build-my-widgetset-jar</id>
<formats>
<format>jar</format>
</formats>
<includeBaseDirectory>false</includeBaseDirectory>
<fileSets>
<fileSet>
<directory>${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>
网页.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，使用jar作为项目中的依赖项，然后就完成了。这将使您永久摆脱GWT称之为“widgetset编译”的大麻烦。
