Exception while executing java class
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0
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I executed this command
mvn compile exec:java -Dexec.classpathScope=compile -Dexec.mainClass=crawler.Crawler
and found this
An exception occured while executing the Java class. org/apache/log4j/Logger
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" si:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<repositories>
<repository>
<id>clojars.org</id>
<url>http://clojars.org/repo</url>
</repository>
<repository>
<id>twitter4j.org</id>
<name>twitter4j.org Repository</name>
<url>http://twitter4j.org/maven2</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
second part
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
Error
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
java maven
edited Nov 11 at 16:09
Cœur
17.2k9102141
|
show 1 more comment
up vote
0
down vote
favorite
I executed this command
mvn compile exec:java -Dexec.classpathScope=compile -Dexec.mainClass=crawler.Crawler
and found this
An exception occured while executing the Java class. org/apache/log4j/Logger
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" si:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<repositories>
<repository>
<id>clojars.org</id>
<url>http://clojars.org/repo</url>
</repository>
<repository>
<id>twitter4j.org</id>
<name>twitter4j.org Repository</name>
<url>http://twitter4j.org/maven2</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
second part
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
Error
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
java maven
edited Nov 11 at 16:09
Cœur
17.2k9102141
Presumably log4j is in 'test' scope, not 'compile' scope.
– bmargulies
Jan 18 '15 at 22:42
1
There clearly is a problem with your dependencies. Log4J is missing from the classpath. Are you sure you setup the<scope>correctly?
– Alessandro Santini
Jan 18 '15 at 22:42
Execuse me i'm new in java and maven how can i check <scope> and where can i find it ?
– user3188912
Jan 18 '15 at 22:46
Is there a pom.xml you can show us?
– Dawood ibn Kareem
Jan 18 '15 at 23:00
What even is the error?
– Dave Newton
Jan 18 '15 at 23:21
|
show 1 more comment
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I executed this command
mvn compile exec:java -Dexec.classpathScope=compile -Dexec.mainClass=crawler.Crawler
and found this
An exception occured while executing the Java class. org/apache/log4j/Logger
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" si:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<repositories>
<repository>
<id>clojars.org</id>
<url>http://clojars.org/repo</url>
</repository>
<repository>
<id>twitter4j.org</id>
<name>twitter4j.org Repository</name>
<url>http://twitter4j.org/maven2</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
second part
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
Error
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
java maven
edited Nov 11 at 16:09
Cœur
17.2k9102141
I executed this command
mvn compile exec:java -Dexec.classpathScope=compile -Dexec.mainClass=crawler.Crawler
and found this
An exception occured while executing the Java class. org/apache/log4j/Logger
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" si:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<repositories>
<repository>
<id>clojars.org</id>
<url>http://clojars.org/repo</url>
</repository>
<repository>
<id>twitter4j.org</id>
<name>twitter4j.org Repository</name>
<url>http://twitter4j.org/maven2</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
second part
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
Error
java.lang.NoClassDefFoundError: org/apache/log4j/Logger
java maven
java maven
edited Nov 11 at 16:09
Cœur
17.2k9102141
edited Nov 11 at 16:09
Cœur
17.2k9102141
edited Nov 11 at 16:09
Cœur
17.2k9102141
edited Nov 11 at 16:09
Cœur
17.2k9102141
edited Nov 11 at 16:09
Cœur
17.2k9102141
17.2k9102141
asked Jan 18 '15 at 22:39
user3188912
Presumably log4j is in 'test' scope, not 'compile' scope.
– bmargulies
Jan 18 '15 at 22:42
1
There clearly is a problem with your dependencies. Log4J is missing from the classpath. Are you sure you setup the<scope>correctly?
– Alessandro Santini
Jan 18 '15 at 22:42
Execuse me i'm new in java and maven how can i check <scope> and where can i find it ?
– user3188912
Jan 18 '15 at 22:46
Is there a pom.xml you can show us?
– Dawood ibn Kareem
Jan 18 '15 at 23:00
What even is the error?
– Dave Newton
Jan 18 '15 at 23:21
|
show 1 more comment
Presumably log4j is in 'test' scope, not 'compile' scope.
– bmargulies
Jan 18 '15 at 22:42
1
There clearly is a problem with your dependencies. Log4J is missing from the classpath. Are you sure you setup the<scope>correctly?
– Alessandro Santini
Jan 18 '15 at 22:42
Execuse me i'm new in java and maven how can i check <scope> and where can i find it ?
– user3188912
Jan 18 '15 at 22:46
Is there a pom.xml you can show us?
– Dawood ibn Kareem
Jan 18 '15 at 23:00
What even is the error?
– Dave Newton
Jan 18 '15 at 23:21
Presumably log4j is in 'test' scope, not 'compile' scope.
– bmargulies
Jan 18 '15 at 22:42
Presumably log4j is in 'test' scope, not 'compile' scope.
– bmargulies
Jan 18 '15 at 22:42
1
1
There clearly is a problem with your dependencies. Log4J is missing from the classpath. Are you sure you setup the
<scope> correctly?– Alessandro Santini
Jan 18 '15 at 22:42
There clearly is a problem with your dependencies. Log4J is missing from the classpath. Are you sure you setup the
<scope> correctly?– Alessandro Santini
Jan 18 '15 at 22:42
Execuse me i'm new in java and maven how can i check <scope> and where can i find it ?
– user3188912
Jan 18 '15 at 22:46
Execuse me i'm new in java and maven how can i check <scope> and where can i find it ?
– user3188912
Jan 18 '15 at 22:46
Is there a pom.xml you can show us?
– Dawood ibn Kareem
Jan 18 '15 at 23:00
Is there a pom.xml you can show us?
– Dawood ibn Kareem
Jan 18 '15 at 23:00
What even is the error?
– Dave Newton
Jan 18 '15 at 23:21
What even is the error?
– Dave Newton
Jan 18 '15 at 23:21
|
show 1 more comment
1 Answer
1
active
oldest
votes
up vote
0
down vote
accepted
You need to add dependency on log4j
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
to your pom.xml file (after dependency on junit).
You can read about this dependency in maven repo:
http://mvnrepository.com/artifact/log4j/log4j/1.2.17
answered Jan 19 '15 at 18:03
Vitaly
1,3821917
I got this after appending <dependency>log4j. please initialize log4j system properly
– user3188912
Jan 21 '15 at 23:02
I am glad, my answer helped you. And now you have new challenge. I think, this topic help you: How to initialize log4j properly? I guess, we can close this discussion. I voted up your question. You can voteup and accept my answer. Good luck!
– Vitaly
Jan 22 '15 at 4:15
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
You need to add dependency on log4j
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
to your pom.xml file (after dependency on junit).
You can read about this dependency in maven repo:
http://mvnrepository.com/artifact/log4j/log4j/1.2.17
answered Jan 19 '15 at 18:03
Vitaly
1,3821917
I got this after appending <dependency>log4j. please initialize log4j system properly
– user3188912
Jan 21 '15 at 23:02
I am glad, my answer helped you. And now you have new challenge. I think, this topic help you: How to initialize log4j properly? I guess, we can close this discussion. I voted up your question. You can voteup and accept my answer. Good luck!
– Vitaly
Jan 22 '15 at 4:15
add a comment |
up vote
0
down vote
accepted
You need to add dependency on log4j
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
to your pom.xml file (after dependency on junit).
You can read about this dependency in maven repo:
http://mvnrepository.com/artifact/log4j/log4j/1.2.17
answered Jan 19 '15 at 18:03
Vitaly
1,3821917
I got this after appending <dependency>log4j. please initialize log4j system properly
– user3188912
Jan 21 '15 at 23:02
I am glad, my answer helped you. And now you have new challenge. I think, this topic help you: How to initialize log4j properly? I guess, we can close this discussion. I voted up your question. You can voteup and accept my answer. Good luck!
– Vitaly
Jan 22 '15 at 4:15
add a comment |
up vote
0
down vote
accepted
up vote
0
down vote
accepted
You need to add dependency on log4j
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
to your pom.xml file (after dependency on junit).
You can read about this dependency in maven repo:
http://mvnrepository.com/artifact/log4j/log4j/1.2.17
answered Jan 19 '15 at 18:03
Vitaly
1,3821917
You need to add dependency on log4j
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
to your pom.xml file (after dependency on junit).
You can read about this dependency in maven repo:
http://mvnrepository.com/artifact/log4j/log4j/1.2.17
answered Jan 19 '15 at 18:03
Vitaly
1,3821917
answered Jan 19 '15 at 18:03
Vitaly
1,3821917
answered Jan 19 '15 at 18:03
Vitaly
1,3821917
answered Jan 19 '15 at 18:03
Vitaly
1,3821917
1,3821917
I got this after appending <dependency>log4j. please initialize log4j system properly
– user3188912
Jan 21 '15 at 23:02
I am glad, my answer helped you. And now you have new challenge. I think, this topic help you: How to initialize log4j properly? I guess, we can close this discussion. I voted up your question. You can voteup and accept my answer. Good luck!
– Vitaly
Jan 22 '15 at 4:15
add a comment |
I got this after appending <dependency>log4j. please initialize log4j system properly
– user3188912
Jan 21 '15 at 23:02
I am glad, my answer helped you. And now you have new challenge. I think, this topic help you: How to initialize log4j properly? I guess, we can close this discussion. I voted up your question. You can voteup and accept my answer. Good luck!
– Vitaly
Jan 22 '15 at 4:15
I got this after appending <dependency>log4j. please initialize log4j system properly
– user3188912
Jan 21 '15 at 23:02
I got this after appending <dependency>log4j. please initialize log4j system properly
– user3188912
Jan 21 '15 at 23:02
I am glad, my answer helped you. And now you have new challenge. I think, this topic help you: How to initialize log4j properly? I guess, we can close this discussion. I voted up your question. You can voteup and accept my answer. Good luck!
– Vitaly
Jan 22 '15 at 4:15
I am glad, my answer helped you. And now you have new challenge. I think, this topic help you: How to initialize log4j properly? I guess, we can close this discussion. I voted up your question. You can voteup and accept my answer. Good luck!
– Vitaly
Jan 22 '15 at 4:15
add a comment |
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Presumably log4j is in 'test' scope, not 'compile' scope.
– bmargulies
Jan 18 '15 at 22:42
1
There clearly is a problem with your dependencies. Log4J is missing from the classpath. Are you sure you setup the
<scope>correctly?– Alessandro Santini
Jan 18 '15 at 22:42
Execuse me i'm new in java and maven how can i check <scope> and where can i find it ?
– user3188912
Jan 18 '15 at 22:46
Is there a pom.xml you can show us?
– Dawood ibn Kareem
Jan 18 '15 at 23:00
What even is the error?
– Dave Newton
Jan 18 '15 at 23:21