Java 8 servlet上出现严重异常，出现java.lang.NoClassDefFoundError
我在java版本的OpenJDK运行时环境（build 1.8.0_121-8u121-b13-0ubuntu1.16.04.2-b13）上运行tomcat8时遇到此异常 这就是我的web.xml的样子：Java 8 servlet上出现严重异常，出现java.lang.NoClassDefFoundError,java-8,tomcat8,openjdk,servlet-listeners,Java 8,Tomcat8,Openjdk,Servlet Listeners,我在java版本的OpenJDK运行时环境（build 1.8.0_121-8u121-b13-0ubuntu1.16.04.2-b13）上运行tomcat8时遇到此异常 这就是我的web.xml的样子： <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
<?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>
<display-name>Wink SDK demo</display-name>
<description>Demonstration of SDK features</description>
<filter>
<filter-name>ContentEncodingResponseFilter</filter-name>
<filter-class>org.apache.wink.server.internal.servlet.contentencode.ContentEncodingResponseFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>ContentEncodingResponseFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>com.example.listener.ApplicationLifeCycleListener</listener-class>
</listener>
<servlet>
<servlet-name>restSdkService</servlet-name>
<servlet-class>org.apache.wink.server.internal.servlet.RestServlet</servlet-class>
<init-param>
<param-name>applicationConfigLocation</param-name>
<param-value>/WEB-INF/application</param-value>
</init-param>
<init-param>
<param-name>propertiesLocation</param-name>
<param-value>/WEB-INF/bookmarks.properties</param-value>
</init-param>
<init-param>
<param-name>javax.ws.rs.Application</param-name>
<param-value>com.example.WinkApplication</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>restSdkService</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
Wink SDK演示
SDK功能演示
ContentEncodingResponseFilter
org.apache.wink.server.internal.servlet.contentencode.ContentEncodingResponseFilter
ContentEncodingResponseFilter
/*
com.example.listener.applicationLifeCycleStener
restSdkService
org.apache.wink.server.internal.servlet.RestServlet
应用程序配置
/WEB-INF/应用程序
物业位置
/WEB-INF/bookmarks.properties
javax.ws.rs.Application
com.example.wink应用程序
restSdkService
/休息/*
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>de.some.service</groupId>
<artifactId>RestService</artifactId>
<packaging>war</packaging>
<version>current-SNAPSHOT</version>
<parent>
<groupId>de.some.parent</groupId>
<artifactId>parent</artifactId>
<version>current-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.wink</groupId>
<artifactId>wink-server</artifactId>
<version>1.1.3-incubating</version>
</dependency>
<dependency>
<groupId>org.apache.wink</groupId>
<artifactId>wink-client</artifactId>
<version>1.1.3-incubating</version>
</dependency>
<dependency>
<artifactId>mongo-java-driver</artifactId>
<groupId>org.mongodb</groupId>
<version>${mongo-java-driver.version}</version>
</dependency>
<dependency>
<groupId>de.some.entities</groupId>
<artifactId>someinternalentities</artifactId>
<version>current-SNAPSHOT</version>
<exclusions>
<exclusion>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>de.some.utils</groupId>
<artifactId>someinternalutils</artifactId>
<version>current-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>de.some.lib</groupId>
<artifactId>someinternallib</artifactId>
<version>current-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.module</groupId>
<artifactId>jackson-module-jaxb-annotations</artifactId>
<version>2.7.4</version>
</dependency>
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5-20081211</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>apache-log4j-extras</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>net.sf.cron4j</groupId>
<artifactId>cron4j</artifactId>
<version>2.2.5</version>
</dependency>
<!-- JETTY DEPENDENCIES FOR TESTING -->
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty</artifactId>
<version>6.1.25</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-util</artifactId>
<version>6.1.25</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-management</artifactId>
<version>6.1.25</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>de.some.internal.library</groupId>
<artifactId>someinternal-svc</artifactId>
<version>current-SNAPSHOT</version>
</dependency>
<!-- JUNIT DEPENDENCY FOR TESTING -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/asm/asm-attrs -->
<dependency>
<groupId>asm</groupId>
<artifactId>asm-attrs</artifactId>
<version>2.2.3</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<filtering>false</filtering>
<directory>src/main/resources</directory>
</resource>
<resource>
<filtering>false</filtering>
<directory>src/main/java</directory>
<includes>
<include>**</include>
</includes>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<testResources>
<testResource>
<directory>src/main/config</directory>
<filtering>true</filtering>
</testResource>
<testResource>
<filtering>false</filtering>
<directory>src/test/java</directory>
<includes>
<include>**</include>
</includes>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</testResource>
</testResources>
<plugins>
<plugin>
<inherited>true</inherited>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
<optimize>true</optimize>
<debug>true</debug>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.1</version>
<configuration>
<archive>
<manifest>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
<addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
</manifest>
</archive>
<archiveClasses>true</archiveClasses>
</configuration>
</plugin>
</plugins>
</build>
</project>
4.0.0
一些服务
再服务
战争
当前快照
父母
父母亲
当前快照
org.projectlombok
龙目
${lombok.version}
假如
org.apache.wink
wink服务器
1.1.3-孵化
org.apache.wink
眨眼客户端
1.1.3-孵化
mongo java驱动程序
org.mongodb
${mongo java driver.version}
某些实体
某些内部实体
当前快照
asm
asm
德·索·乌提尔
一些内部细节
当前快照
自由党
someinternallib
当前快照
com.fasterxml.jackson.module
jackson模块jaxb注释
2.7.4
org.mortbay.jetty
servlet api
2.5-20081211
org.slf4j
slf4j-log4j12
${slf4j.version}
org.slf4j
slf4j api
${slf4j.version}
log4j
apache-log4j-extras
1.1
net.sf.cron4j
cron4j
2.2.5
org.mortbay.jetty
码头
6.1.25
假如
org.mortbay.jetty
码头
6.1.25
假如
org.mortbay.jetty
码头管理
6.1.25
假如
javax.mail
邮件
1.4
内部图书馆
某些内部svc
当前快照
朱尼特
朱尼特
${junit.version}
测试
asm
asm属性
2.2.3
公用记录
公用记录
1.2
假的
src/main/resources
假的
src/main/java
**
**/*.爪哇
src/main/config
真的
假的
src/test/java
**
**/*.爪哇
真的
org.apache.maven.plugins
maven编译器插件
1.6
1.6
真的
真的
maven战争插件
2.1
真的
真的
真的
有人知道为什么会发生这种情况吗？我们通过删除tomcat在路径/tomcat8/work/Catalina/localhost中创建的文件夹来解决问题 阅读这里的@Jared答案 通常这表示我们以前试图从类路径加载一个类，但由于某种原因失败了-现在我们尝试再次使用该类（因此需要加载它，因为它上次失败了），但我们甚至不打算尝试加载它，因为我们之前加载它失败了 关于tomcat的工作目录是tomcat在运行时写入所需文件的地方这一事实（有关更多信息，请阅读此处） 如servlet规范中所述，通过名为javax.servlet.context.tempdir的servlet上下文属性（类型为java.io.File），web应用程序中的servlet可以看到该目录 ，我相信这两件事是相互关联的
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>de.some.service</groupId>
<artifactId>RestService</artifactId>
<packaging>war</packaging>
<version>current-SNAPSHOT</version>
<parent>
<groupId>de.some.parent</groupId>
<artifactId>parent</artifactId>
<version>current-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.wink</groupId>
<artifactId>wink-server</artifactId>
<version>1.1.3-incubating</version>
</dependency>
<dependency>
<groupId>org.apache.wink</groupId>
<artifactId>wink-client</artifactId>
<version>1.1.3-incubating</version>
</dependency>
<dependency>
<artifactId>mongo-java-driver</artifactId>
<groupId>org.mongodb</groupId>
<version>${mongo-java-driver.version}</version>
</dependency>
<dependency>
<groupId>de.some.entities</groupId>
<artifactId>someinternalentities</artifactId>
<version>current-SNAPSHOT</version>
<exclusions>
<exclusion>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>de.some.utils</groupId>
<artifactId>someinternalutils</artifactId>
<version>current-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>de.some.lib</groupId>
<artifactId>someinternallib</artifactId>
<version>current-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.module</groupId>
<artifactId>jackson-module-jaxb-annotations</artifactId>
<version>2.7.4</version>
</dependency>
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5-20081211</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>apache-log4j-extras</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>net.sf.cron4j</groupId>
<artifactId>cron4j</artifactId>
<version>2.2.5</version>
</dependency>
<!-- JETTY DEPENDENCIES FOR TESTING -->
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty</artifactId>
<version>6.1.25</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-util</artifactId>
<version>6.1.25</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-management</artifactId>
<version>6.1.25</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>de.some.internal.library</groupId>
<artifactId>someinternal-svc</artifactId>
<version>current-SNAPSHOT</version>
</dependency>
<!-- JUNIT DEPENDENCY FOR TESTING -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/asm/asm-attrs -->
<dependency>
<groupId>asm</groupId>
<artifactId>asm-attrs</artifactId>
<version>2.2.3</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<filtering>false</filtering>
<directory>src/main/resources</directory>
</resource>
<resource>
<filtering>false</filtering>
<directory>src/main/java</directory>
<includes>
<include>**</include>
</includes>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<testResources>
<testResource>
<directory>src/main/config</directory>
<filtering>true</filtering>
</testResource>
<testResource>
<filtering>false</filtering>
<directory>src/test/java</directory>
<includes>
<include>**</include>
</includes>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</testResource>
</testResources>
<plugins>
<plugin>
<inherited>true</inherited>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
<optimize>true</optimize>
<debug>true</debug>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.1</version>
<configuration>
<archive>
<manifest>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
<addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
</manifest>
</archive>
<archiveClasses>true</archiveClasses>
</configuration>
</plugin>
</plugins>
</build>
</project>