我正在尝试在Tomcat服务器上运行GWT，我的构建框架是Maven。但是我一直收到以下错误
java: Unable to find RequestFactory built-in type. Is requestfactory-[client|server].jar on the classpath?
知道为什么会这样吗？
由于
答案 0 :(得分：0)
读取此错误，似乎缺少lib。检查请求工厂服务器是否在您的pom.xml中，以及您的配置是否正常。
我也在使用maven和GWT-requestfactory。以下是我的maven配置示例：
<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">
<modelVersion>4.0.0</modelVersion>
<parent>
<!-- -->
</parent>
<artifactId>docentryeditor</artifactId>
<packaging>war</packaging>
<name>doc-entry-editor</name>
<properties>
<!-- Convenience property to set the GWT version -->
<gwtVersion>2.5.1</gwtVersion>
<webappDirectory>${project.build.directory}/${project.build.finalName}</webappDirectory>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>
<url>http://maven.apache.org</url>
<repositories>
<repository>
<id>gwt-maven</id>
<url>http://gwt-maven.googlecode.com/svn/trunk/mavenrepo/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-servlet</artifactId>
<version>${gwtVersion}</version>
</dependency>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-dev</artifactId>
<version>${gwtVersion}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-user</artifactId>
<version>${gwtVersion}</version>
<scope>provided</scope>
<exclusions>
<exclusion>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.google.web.bindery</groupId>
<artifactId>requestfactory-server</artifactId>
<version>${gwtVersion}</version>
</dependency>
<dependency>
<groupId>com.google.web.bindery</groupId>
<artifactId>requestfactory-apt</artifactId>
<version>${gwtVersion}</version>
</dependency>
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>com.google.gwt.inject</groupId>
<artifactId>gin</artifactId>
<version>1.5.0</version>
</dependency>
<dependency>
<groupId>com.google.inject</groupId>
<artifactId>guice</artifactId>
<version>3.0</version>
</dependency>
<dependency>
<groupId>com.google.inject.extensions</groupId>
<artifactId>guice-servlet</artifactId>
<version>3.0</version>
</dependency>
<dependency>
<groupId>com.google.inject.extensions</groupId>
<artifactId>guice-assistedinject</artifactId>
<version>3.0</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>4.1.0.Final</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.0.0.GA</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.0.0.GA</version>
<classifier>sources</classifier>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
</dependencies>
<build>
<finalName>docentryeditor</finalName>
<outputDirectory>${webappDirectory}/WEB-INF/classes</outputDirectory>
<!-- Generate compiled stuff in the folder used for developing mode -->
<!--<outputDirectory>${webappDirectory}/WEB-INF/classes</outputDirectory>-->
<plugins>
<!-- GWT Maven Plugin-->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>gwt-maven-plugin</artifactId>
<version>${gwtVersion}</version>
<dependencies>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-user</artifactId>
<version>${gwtVersion}</version>
</dependency>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-dev</artifactId>
<version>${gwtVersion}</version>
</dependency>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-servlet</artifactId>
<version>${gwtVersion}</version>
</dependency>
</dependencies>
<!-- JS is only needed in the package phase, this speeds up testing -->
<executions>
<execution>
<phase>prepare-package</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
</executions>
<!-- Plugin configuration. There are many available options,
see gwt-maven-plugin documentation at codehaus.org -->
<configuration>
<!-- URL that should be automatically opened in the GWT shell (gwt:run). -->
<runTarget>XDS-MetadataEditor.html</runTarget>
<!-- Ask GWT to create the Story of Your Compile (SOYC) (gwt:compile) -->
<compileReport>true</compileReport>
<module>edu.tn.xds.metadata.editor</module>
<hostedWebapp>${webappDirectory}</hostedWebapp><!--makes file download work in dev mode-->
<logLevel>INFO</logLevel>
<style>${gwtVersion}</style>
<copyWebapp>true</copyWebapp>
</configuration>
</plugin>
<!-- Maven WAR plugin -->
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.4</version>
<configuration>
<!-- configured to be the same as for the gwt plugin -->
<webappDirectory>${webappDirectory}</webappDirectory>
</configuration>
<executions>
<execution>
<phase>compile</phase>
<goals>
<!-- create an exploded version of the war in webappDirectory. Ideal
for development -->
<goal>exploded</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- Copy static web files before executing gwt:run -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>2.4.2</version>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>copy-resources</goal>
</goals>
<configuration>
<outputDirectory>${webappDirectory}/WEB-INF/</outputDirectory>
<resources>
<resource>
<directory>src/main/webapp</directory>
</resource>
</resources>
</configuration>
</execution>
</executions>
</plugin>
<!-- RequestFactory Validation jar -->
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
<annotationProcessors>
<annotationProcessor>com.google.web.bindery.requestfactory.apt.RfValidator</annotationProcessor>
</annotationProcessors>
</configuration>
<dependencies>
<dependency>
<groupId>com.google.web.bindery</groupId>
<artifactId>requestfactory-apt</artifactId>
<version>${gwtVersion}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
<!--This plugin's configuration is used to store Eclipse m2e settings
only. It has no influence on the Maven build itself. -->
<pluginManagement>
<plugins>
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.codehaus.mojo</groupId>
<artifactId>
gwt-maven-plugin
</artifactId>
<versionRange>
[2.5.1,)
</versionRange>
<goals>
<goal>i18n</goal>
</goals>
</pluginExecutionFilter>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
如果您有任何疑问，或者有什么事情您不明白，请不要犹豫。 否则，如果你真的没有设法做到这一点，给我你的maven配置，我会看看它，并试着告诉你有什么问题。
请注意我的配置没有tomcat配置，因为我不需要它，但我真的不认为这可能是你的问题。