java.lang.ClassCastException: org.glassfish.jersey.servlet.ServletContainer cannot be cast to javax.servlet.Servlet

user3770101 Published at Dev

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user3770101

I'm unable to start my webapp on my Tomcat 7.0 Server because of the following error :

java.lang.ClassCastException: org.glassfish.jersey.servlet.ServletContainer cannot be cast to javax.servlet.Servlet

My web.xml , which include the ServlectContainer :

<?xml version="1.0" encoding="UTF-8"?>
<!-- This web.xml file is not required when using Servlet 3.0 container,
 see implementation details http://jersey.java.net/nonav/documentation/latest/jax-rs.html -->
<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">
<servlet>
    <servlet-name>Jersey Web Application</servlet-name>
    <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
    <init-param>
        <param-name>jersey.config.server.provider.packages</param-name>
        <param-value>fr.tessi</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>Jersey Web Application</servlet-name>
    <url-pattern>/webapi/*</url-pattern>
</servlet-mapping>
</web-app>

And here's my 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/maven-v4_0_0.xsd">

<modelVersion>4.0.0</modelVersion>

<groupId>fr.tessi</groupId>
<artifactId>cassandra-cli-back</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>cassandra-cli-back</name>

<build>
    <finalName>cassandra-cli-back</finalName>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>2.5.1</version>
            <inherited>true</inherited>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
        </plugin>
    </plugins>
</build>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.glassfish.jersey</groupId>
            <artifactId>jersey-bom</artifactId>
            <version>${jersey.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>org.glassfish.jersey.containers</groupId>
        <artifactId>jersey-container-servlet-core</artifactId>
        <!-- use the following artifactId if you don't need servlet 2.x compatibility -->
        <!-- artifactId>jersey-container-servlet</artifactId -->
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>${jackson-2-version}</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.jaxrs</groupId>
        <artifactId>jackson-jaxrs-json-provider</artifactId>
        <version>${jackson-2-version}</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>${jackson-2-version}</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.media</groupId>
        <artifactId>jersey-media-moxy</artifactId>
    </dependency>
    <dependency>
        <groupId>com.netflix.astyanax</groupId>
        <artifactId>astyanax-core</artifactId>
        <version>1.56.48</version>
    </dependency>
    <dependency>
        <groupId>com.netflix.astyanax</groupId>
        <artifactId>astyanax-cassandra</artifactId>
        <version>1.56.48</version>
    </dependency>
    <dependency>
        <groupId>com.netflix.astyanax</groupId>
        <artifactId>astyanax-thrift</artifactId>
        <version>1.56.48</version>
    </dependency>
    <!-- <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.6.1</version>
    </dependency> -->

</dependencies>
<properties>
    <jersey.version>2.6</jersey.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <jackson-2-version>2.4.3</jackson-2-version>
</properties>

Despite the scope provided on the 'servlet-api' dependency, it's still downloaded on stratup.

Already tried to change the servlet-class with multiples classes found on StackOverFlow and other websites, but no results. It keep sending an error.

user3770101

My colleague sorted out the problem. Basically, dependencies conflict. Here is the functionnal dependencies' list :

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>org.glassfish.jersey.containers</groupId>
        <!-- if your container implements Servlet API older than 3.0, use "jersey-container-servlet-core" -->
        <artifactId>jersey-container-servlet</artifactId>
        <version>2.13</version>
    </dependency>
    <!-- Required only when you are using JAX-RS Client -->
    <dependency>
        <groupId>org.glassfish.jersey.core</groupId>
        <artifactId>jersey-client</artifactId>
        <version>2.13</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.media</groupId>
        <artifactId>jersey-media-json-jackson</artifactId>
        <version>2.13</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>


    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>${jackson-2-version}</version>
    </dependency>
    <dependency>
        <!-- note: typically only ".0" patch version exists for core annotations -->
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>${jackson-2-version}</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.jaxrs</groupId>
        <artifactId>jackson-jaxrs-json-provider</artifactId>
        <version>${jackson-2-version}</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>${jackson-2-version}</version>
    </dependency>
    <dependency>




        <groupId>com.netflix.astyanax</groupId>
        <artifactId>astyanax-core</artifactId>
        <version>1.56.48</version>
    </dependency>
    <dependency>
        <groupId>com.netflix.astyanax</groupId>
        <artifactId>astyanax-cassandra</artifactId>
        <version>1.56.48</version>
        <exclusions>
            <exclusion>
                <artifactId>servlet-api</artifactId>
                <groupId>org.mortbay.jetty</groupId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>com.netflix.astyanax</groupId>
        <artifactId>astyanax-thrift</artifactId>
        <version>1.56.48</version>
    </dependency>
    <!-- <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> 


        <version>1.6.1</version> </dependency> -->


</dependencies>
<properties>
    <jersey.version>2.13</jersey.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <jackson-2-version>2.4.3</jackson-2-version>
</properties>

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