eclipse - JavaServer Faces 2.2 requires Dynamic Web Module 2.5 or newer

Question

I tried few things, but still this problem persists. I am using Eclipse Kepler. I get following error on importing maven project

JavaServer Faces 2.2 can not be installed : One or more constraints have not been satisfied

JavaServer Faces 2.2 requires Dynamic Web Module 2.5 or newer

1) I tried few things as mentioned in Maven Java EE Configuration Marker with Java Server Faces 1.2, but no luck. 2)Also I went into .settings and modified org.eclipse.wst.common.project.facet.core.xml and modified jst.web to point to 2.5 or 3.0 version; but I get some other errors.

I am trying to make Sencha GXT examples work in maven/eclipse build based on http://neiliscoding.blogspot.ie/2012/05/how-to-setup-examples-for-use-in-gxt-3.html and having this javaserver faces problem in eclipse. Here is my 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>

Here is my web.xml file

 <?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>

As you can see, I tried different dtds in above web.xml, but I still have the problem. Would appreciate any hints

Answer 1

I have encountered this with Maven projects too. This is what I had to do to get around the problem:

First update your web.xml as mentioned Thorbj?rn Ravn Andersen. I used version 3.0 as below:

<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>

Then right click on your project and select Properties -> Project Facets In there you will see the version of your Dynamic Web Module. This needs to change from version 2.3 or whatever to version 2.5 or above (I chose 3.0).

However to do this I had to uncheck the tick box for Dynamic Web Module -> Apply, then do a Maven Update on the project. Go back into the Project Facets window and it should already match your web.xml configuration - 3.0 in my case. You should be able to change it if not.

If this does not work for you then try right-clicking on the Dynamic Web Module Facet and select change version (and ensure it is not locked).

Hope that works!