maven - java.lang.NoClassDefFoundError: javax/el/ELManager -

i'm working on webapp in spring using spring tool suite. if build , deploy application there using ide onto provided pivotal tc server, works fine. however, if manual "mvn clean package" build , attempt deploy standalone tomcat server (using newest tomcat 7), throws following exception:

2017-08-23 15:24:13 warn  annotationconfigwebapplicationcontext:551 - exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.beancreationexception: error creating bean name 'requestmappinghandleradapter' defined in org.springframework.web.servlet.config.annotation.delegatingwebmvcconfiguration: bean instantiation via factory method failed; nested exception org.springframework.beans.beaninstantiationexception: failed instantiate [org.springframework.web.servlet.mvc.method.annotation.requestmappinghandleradapter]: factory method 'requestmappinghandleradapter' threw exception; nested exception org.springframework.beans.factory.beancreationexception: error creating bean name 'mvcvalidator' defined in org.springframework.web.servlet.config.annotation.delegatingwebmvcconfiguration: invocation of init method failed; nested exception java.lang.noclassdeffounderror: javax/el/elmanager 2017-08-23 15:24:13 error dispatcherservlet:502 - context initialization failed org.springframework.beans.factory.beancreationexception: error creating bean name 'requestmappinghandleradapter' defined in org.springframework.web.servlet.config.annotation.delegatingwebmvcconfiguration: bean instantiation via factory method failed; nested exception org.springframework.beans.beaninstantiationexception: failed instantiate [org.springframework.web.servlet.mvc.method.annotation.requestmappinghandleradapter]: factory method 'requestmappinghandleradapter' threw exception; nested exception org.springframework.beans.factory.beancreationexception: error creating bean name 'mvcvalidator' defined in org.springframework.web.servlet.config.annotation.delegatingwebmvcconfiguration: invocation of init method failed; nested exception java.lang.noclassdeffounderror: javax/el/elmanager 

upon further inspection, complain few lines higher above not loading jars:

sie 23, 2017 3:24:12 pm org.apache.catalina.startup.hostconfig deploywar info: deploying web application archive d:\apache-tomcat-7.0\webapps\testapp-0.0.1-snapshot.war sie 23, 2017 3:24:12 pm org.apache.catalina.loader.webappclassloader validatejarfile info: validatejarfile(d:\apache-tomcat-7.0\webapps\testapp-0.0.1-snapshot\web-inf\lib\el-api-2.2.jar) - jar not loaded. see servlet spec 2.3, section 9.7.2. offending class: javax/el/expression.class sie 23, 2017 3:24:12 pm org.apache.catalina.loader.webappclassloader validatejarfile info: validatejarfile(d:\apache-tomcat-7.0\webapps\testapp-0.0.1-snapshot\web-inf\lib\javax.servlet-api-3.1.0.jar) - jar not loaded. see servlet spec 2.3, section 9.7.2. offending class: javax/servlet/servlet.class sie 23, 2017 3:24:12 pm org.apache.catalina.loader.webappclassloader validatejarfile info: validatejarfile(d:\apache-tomcat-7.0\webapps\testapp-0.0.1-snapshot\web-inf\lib\tomcat-el-api-8.0.21.jar) - jar not loaded. see servlet spec 2.3, section 9.7.2. offending class: javax/el/expression.class 2017-08-23 15:24:13 info  contextloader:304 - root webapplicationcontext: initialization started 

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/xsd/maven-4.0.0.xsd">   <modelversion>4.0.0</modelversion>   <groupid>com.exmaple.mvc</groupid>   <artifactid>testapp</artifactid>   <version>0.0.1-snapshot</version>   <packaging>war</packaging>   <dependencies>     <dependency>         <groupid>org.springframework</groupid>         <artifactid>spring-core</artifactid>         <version>4.3.10.release</version>     </dependency>     <dependency>         <groupid>org.springframework</groupid>         <artifactid>spring-webmvc</artifactid>         <version>4.3.10.release</version>     </dependency>     <dependency>         <groupid>org.springframework</groupid>         <artifactid>spring-web</artifactid>         <version>4.3.10.release</version>     </dependency>     <dependency>         <groupid>org.springframework</groupid>         <artifactid>spring-test</artifactid>         <version>4.3.10.release</version>     </dependency>     <dependency>         <groupid>org.slf4j</groupid>         <artifactid>slf4j-log4j12</artifactid>         <version>1.6.6</version>     </dependency>     <dependency>        <groupid>log4j</groupid>        <artifactid>log4j</artifactid>        <version>1.2.17</version>        <exclusions>         <exclusion>             <artifactid>jms</artifactid>             <groupid>javax.jms</groupid>         </exclusion>         <exclusion>             <artifactid>jmxri</artifactid>             <groupid>com.sun.jmx</groupid>         </exclusion>         <exclusion>             <artifactid>jmxtools</artifactid>             <groupid>com.sun.jdmk</groupid>             </exclusion>         </exclusions>     </dependency>         <dependency>         <groupid>jstl</groupid>         <artifactid>jstl</artifactid>         <version>1.2</version>     </dependency>     <dependency>         <groupid>junit</groupid>         <artifactid>junit</artifactid>         <version>4.12</version>         <scope>test</scope>     </dependency>     <!-- https://mvnrepository.com/artifact/org.mockito/mockito-all -->     <dependency>         <groupid>org.mockito</groupid>         <artifactid>mockito-all</artifactid>         <version>1.9.5</version>         <scope>test</scope>     </dependency>     <!-- https://mvnrepository.com/artifact/commons-lang/commons-lang -->     <dependency>         <groupid>commons-lang</groupid>         <artifactid>commons-lang</artifactid>         <version>2.3</version>     </dependency>     <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->     <dependency>         <groupid>org.hibernate</groupid>         <artifactid>hibernate-validator</artifactid>         <version>6.0.1.final</version>     </dependency>      <dependency>         <groupid>javax.servlet</groupid>         <artifactid>javax.servlet-api</artifactid>         <version>3.1.0</version>     </dependency>   </dependencies>      <build>         <plugins>             <plugin>             <groupid>org.apache.maven.plugins</groupid>             <artifactid>maven-compiler-plugin</artifactid>             <version>3.1</version>             <configuration>                 <source>1.8</source>                 <target>1.8</target>             </configuration>         </plugin>         </plugins>     </build>  </project> 

what's reason behavior , how can solve this?

edit more information:

adding <scope>provided</scope> javax.servlet-api seems fix warning javax.servlet-api not being loaded @ start. problem el-api still remains.

i've checked tomcat/lib directory , contains el-api.jar in it, why tells me it's not going load 1 list in pom.xml. thing is, adding <scope>provided</scope> doesn't fix either. whatever do, still complains gives me same java.lang.noclassdeffounderror: javax/el/elmanager error.

solution

in addition part in edit above regarding javax.servlet-api problem el-api was running tomcat 7 provided el-api jar in version 2.2. missing class introduced in el-api 3.0. running same webapp in tomcat 8 (with el-api 3.0 jar) works properly.

you miss javax.el-api dependency. add:

<dependency>     <groupid>javax.el</groupid>     <artifactid>javax.el-api</artifactid>     <version>3.0.0</version> </dependency> 

to pom.xml

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