[英]java.lang.ClassCastException: org.glassfish.jersey.servlet.ServletContainer cannot be cast to javax.servlet.Servlet
I'm unable to start my webapp on my Tomcat 7.0 Server because of the following error : 由于出现以下错误,我无法在Tomcat 7.0服务器上启动我的Web应用程序:
java.lang.ClassCastException: org.glassfish.jersey.servlet.ServletContainer cannot be cast to javax.servlet.Servlet
My web.xml , which include the ServlectContainer : 我的web.xml,其中包括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 : 这是我的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. 尽管提供了“ servlet-api”依赖项的范围,但仍在stratup上下载了它。
Already tried to change the servlet-class with multiples classes found on StackOverFlow and other websites, but no results. 已经尝试使用在StackOverFlow和其他网站上找到的倍数类更改servlet类,但没有结果。 It keep sending an error.
它不断发送错误。
` `
Is the servlet-api.jar included in your war file? war文件中是否包含servlet-api.jar? If so, remove it manually.
如果是这样,请手动将其删除。
My colleague sorted out the problem. 我的同事解决了这个问题。 Basically, dependencies conflict.
基本上,依赖项会发生冲突。 Here is the functionnal dependencies' list :
这是功能依赖项列表:
<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>
Jersey-server dependency is required, add it to your pom.xml and try deploying. 必须提供Jersey-server依赖性,将其添加到pom.xml并尝试部署。
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-server</artifactId>
<version>2.11</version>
</dependency>
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