Question

While building my web project from Eclipse, everything is fine: no errors, no warnings.

However while building project with Maven it failes. Below is the output form mvn compile:

c:\Users\jwa\Desktop\tets\traffic_web>mvn
compile -e
+ Error stacktraces are turned on. [INFO] Scanning for projects… [INFO]
———————————————————————— [INFO] Building traffic_web [INFO]
task-segment: [compile] [INFO]
———————————————————————— [INFO] [resources:resources
{execution: default-resources}]
[WARNING] Using platform encoding
(Cp1250 actually) to copy filtered
resources, i.e. build is platform
dependent! [INFO] skip non existing
resourceDirectory
c:\Users\jwa\Desktop\tets\traffic_web\src\main\resources
[INFO] [compiler:compile {execution:
default-compile}] [INFO] Compiling 22
source files to
c:\Users\jwa\Desktop\tets\traffic_web\target\classes
[INFO]
———————————————————————— [ERROR] BUILD FAILURE [INFO]
———————————————————————— [INFO] Compilation failure

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\Encryptor.java:[7,15]
sun.misc.BASE64Encoder is Sun propriet
ary API and may be removed in a future
release

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\Session.java:[3,25]
package javax.servlet.http does not
exis t

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\Session.java:[15,21]
cannot find symbol symbol : class
HttpSession location: class
traffic_web.tools.Session

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\ServletContextListenerInitializer.java:[6,20]
package javax. servlet does not exist

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\ServletContextListenerInitializer.java:[7,20]
package javax. servlet does not exist

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\ServletContextListenerInitializer.java:[8,20]
package javax. servlet does not exist

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\ServletContextListenerInitializer.java:[10,58]
cannot find s ymbol symbol: class
ServletContextListener public class
ServletContextListenerInitializer
implements ServletContextListener {

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\ServletContextListenerInitializer.java:[12,33]
cannot find s ymbol symbol : class
ServletContextEvent location: class
traffic_web.tools.ServletContextListenerInitializer

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\ServletContextListenerInitializer.java:[15,35]
cannot find s ymbol symbol : class
ServletContextEvent location: class
traffic_web.tools.ServletContextListenerInitializer

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\controller\BoardController.java:[9,25]
package javax.servlet.http does not
exist

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\controller\BoardController.java:[87,29]
cannot find symbol symbol : class
HttpServletResponse location: class
traffic_web.controller.BoardController

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\controller\BoardController.java:[116,37]
cannot find symbol symbol : class
HttpServletResponse location: class
traffic_web.controller.BoardController

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\Encryptor.java:[27,15]
sun.misc.BASE64Encoder is Sun proprie
tary API and may be removed in a
future release

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\Session.java:[17,27]
cannot access
javax.servlet.http.HttpSe rvletRequest
class file for
javax.servlet.http.HttpServletRequest
not found
return attr.getRequest().getSession(true); //
true == allow create

c:\Users\jwa\Desktop\tets\traffic_web\src\traffic_web\tools\ServletContextListenerInitializer.java:[17,8]
cannot find sy mbol symbol : class
ServletContext location: class
traffic_web.tools.ServletContextListenerInitializer

[INFO]
———————————————————————— [INFO] Trace
org.apache.maven.BuildFailureException:
Compilation failure
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:715)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:55
6)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.jav
a:387)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by:
org.apache.maven.plugin.CompilationFailureException:
Compilation failure
at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:516)
at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:114)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
… 17 more [INFO] ———————————————————————— [INFO] Total time: 1 second [INFO]
Finished at: Mon Jun 28 21:56:25 CEST
2010 [INFO] Final Memory: 13M/254M

[INFO]

My POM file looks like that:

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>masters.traffic</groupId>
  <artifactId>traffic_web</artifactId>
  <packaging>war</packaging>
  <name>traffic_web</name>
  <version>0.1.0</version>
  <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>                    
                </configuration>
            </plugin>
        </plugins>
  </build>

    ...

</project>

Can Someone help me how to fix that ?

Regards

Answer 1

You haven’t added the servlet classes as dependencies. There are apparently present per default in Eclipse, which is why it works to compile from there. Add the following to you pom (before <build>..., taken from here):

<dependencies>
  [...]
  <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>2.4</version>
    <scope>provided</scope>
  </dependency>
</dependencies>