JavaServer Faces 2.2需要动态Web模块2.5或更高版本

Question

我尝试了一些东西,但仍然存在这个问题.我正在使用Eclipse Kepler.我在导入maven项目时遇到以下错误

无法安装JavaServer Faces 2.2:尚未满足一个或多个约束

JavaServer Faces 2.2需要动态Web模块2.5或更高版本

1)我尝试使用Java Server Faces 1.2中的Maven Java EE配置标记中提到的一些东西,但没有运气.2)我也进入.settings并修改了org.eclipse.wst.common.project.facet.core.xml并修改了jst.web以指向2.5或3.0版本; 但我得到一些其他错误.

我试图让煎茶GXT例子行家/ Eclipse构建工作的基础上http://neiliscoding.blogspot.ie/2012/05/how-to-setup-examples-for-use-in-gxt-3.html和让这个javaserver在eclipse中遇到问题.这是我的pom.xml

<?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">

<!-- POM file generated with GWT webAppCreator -->
<modelVersion>4.0.0</modelVersion>
<parent>
    <artifactId>xx</artifactId>
    <groupId>ss</groupId>
    <version>0.0.1-SNAPSHOT</version>
</parent>

<artifactId>guis</artifactId>
<packaging>war</packaging>

<name>GWT Maven Archetype</name>

<properties>
    <!-- Convenience property to set the GWT version -->
    <gwtVersion>2.5.1</gwtVersion>
    <!-- GWT needs at least java 1.5 -->
    <webappDirectory>${project.build.directory}/${project.build.finalName}</webappDirectory>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

<dependencies>
    <dependency>
        <groupId>com.google.gwt.inject</groupId>
        <artifactId>gin</artifactId>
        <version>2.1.2</version>
    </dependency>
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>7.0</version>
    </dependency>

    <dependency>
        <groupId>com.google.gwt</groupId>
        <artifactId>gwt-servlet</artifactId>
        <version>${gwtVersion}</version>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>com.google.gwt</groupId>
        <artifactId>gwt-user</artifactId>
        <version>${gwtVersion}</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>com.google.gwt</groupId>
        <artifactId>gwt-dev</artifactId>
        <version>${gwtVersion}</version>
        <scope>provided</scope>
    </dependency>


    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.7</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>javax.validation</groupId>
        <artifactId>validation-api</artifactId>
        <version>1.0.0.GA</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>javax.validation</groupId>
        <artifactId>validation-api</artifactId>
        <version>1.0.0.GA</version>
        <classifier>sources</classifier>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.sencha.gxt</groupId>
        <artifactId>gxt-chart</artifactId>
        <version>3.0.1</version>
    </dependency>

    <dependency>
        <groupId>com.sencha.gxt</groupId>
        <artifactId>gxt</artifactId>
        <version>3.0.1</version>
    </dependency>

    <dependency>
        <groupId>com.sencha.gxt</groupId>
        <artifactId>uibinder-bridge</artifactId>
        <version>2.4.0</version>
    </dependency>



</dependencies>

<build>
    <!-- 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>2.5.1</version>
            <executions>
                <execution>
                    <goals>
                        <goal>compile</goal>
                        <goal>test</goal>
                        <!-- <goal>i18n</goal> -->
                        <goal>generateAsync</goal>
                    </goals>
                </execution>
            </executions>
            <!-- Plugin configuration. There are many available options, see gwt-maven-plugin 
                documentation at codehaus.org -->
            <configuration>
                <runTarget>guis.html</runTarget>
                <hostedWebapp>${webappDirectory}</hostedWebapp>
                <i18nMessagesBundle>com.harmonia.client.Messages</i18nMessagesBundle>
            </configuration>
        </plugin>

        <!-- Copy static web files before executing gwt:run -->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.1.1</version>
            <executions>
                <execution>
                    <phase>compile</phase>
                    <!-- <goals> <goal>exploded</goal> </goals> -->
                </execution>
            </executions>
            <configuration>
                <webappDirectory>${webappDirectory}</webappDirectory>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>2.3.2</version>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
        </plugin>
    </plugins>
</build>

这是我的web.xml文件

 <?xml version="1.0" encoding="UTF-8"?>
  <!-- <!DOCTYPE web-app
 PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app> -->

<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>GXT Created Web Application</display-name>



<!-- Default page to serve -->
<welcome-file-list>
    <welcome-file>guis.html</welcome-file>
</welcome-file-list>

如您所见,我在上面的web.xml中尝试了不同的dtd,但我仍然遇到了问题.非常感谢任何提示

Answer 1

我也遇到过Maven项目.这是解决问题所必须做的事情:

首先更新您的web.xml,如ThorbjørnRavnAndersen所述.我使用3.0版如下:

<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>Servlet 3.0 Web Application</display-name>
</web-app>

然后右键单击您的项目并选择Properties - > Project Facets在那里您将看到Dynamic Web Module的版本.这需要从2.3或更高版本更改为2.5或更高版本(我选择3.0).

但是,要执行此操作,我必须取消选中动态Web模块的勾选框 - >应用,然后在项目上执行Maven更新.返回Project Facets窗口,它应该已经匹配您的web.xml配置 - 在我的情况下为3.0.如果没有,你应该能够改变它.

如果这对您不起作用,请尝试右键单击Dynamic Web Module Facet并选择更改版本(并确保它未锁定).

希望有效!

Answer 2

您的问题是您已将web.xml标记为符合servlet 2.3(或者甚至不是 - 我不确定您的注释中的doctype是如何解释的)

 <?xml version="1.0" encoding="UTF-8"?>
  <!-- <!DOCTYPE web-app
 PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd">

并且您需要它至少与servlet 2.5兼容才能使Eclipse工具正常工作.

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">

(未经测试 - 从http://javahowto.blogspot.dk/2009/10/sample-webxml-servlet-25.html复制)

您可能需要重新创建Eclipse项目以获取更改.