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How to find if I need to exclude dependencies in a maven java project?
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I use both Intellij IDEA (2018.3.5) & Eclipse IDEs, but I prefer Intellij. I have a maven based Java project with multiple poms. I added some dependencies to one of the pom files. I need to find out if there are any dependency conflicts which could prevent the build from running when its deployed, and then exclude them. I tried the steps given below to find conflicts which could cause problems. Are they enough or do I need to do more ?
Check if there are any compile time dependency conflicts with
mvn clean install -DskipTests. Build was successful with no errors.Check if Intellij shows no problems under File > Project Structure > Problems. There are no problems.
I also saw the dependency tree with mvn dependency:tree -Dverbose. It has a lot of "omitted for duplicate" and "omitted for conflict with" items, but the build was successful. I don't see any errors though. Does this mean that everything is okay or do I have to do something more about these conflicts ?
java maven
asked Mar 27 at 17:28
MasterJoe2MasterJoe2
5087 silver badges31 bronze badges
add a comment |
I use both Intellij IDEA (2018.3.5) & Eclipse IDEs, but I prefer Intellij. I have a maven based Java project with multiple poms. I added some dependencies to one of the pom files. I need to find out if there are any dependency conflicts which could prevent the build from running when its deployed, and then exclude them. I tried the steps given below to find conflicts which could cause problems. Are they enough or do I need to do more ?
Check if there are any compile time dependency conflicts with
mvn clean install -DskipTests. Build was successful with no errors.Check if Intellij shows no problems under File > Project Structure > Problems. There are no problems.
I also saw the dependency tree with mvn dependency:tree -Dverbose. It has a lot of "omitted for duplicate" and "omitted for conflict with" items, but the build was successful. I don't see any errors though. Does this mean that everything is okay or do I have to do something more about these conflicts ?
java maven
asked Mar 27 at 17:28
MasterJoe2MasterJoe2
5087 silver badges31 bronze badges
add a comment |
I use both Intellij IDEA (2018.3.5) & Eclipse IDEs, but I prefer Intellij. I have a maven based Java project with multiple poms. I added some dependencies to one of the pom files. I need to find out if there are any dependency conflicts which could prevent the build from running when its deployed, and then exclude them. I tried the steps given below to find conflicts which could cause problems. Are they enough or do I need to do more ?
Check if there are any compile time dependency conflicts with
mvn clean install -DskipTests. Build was successful with no errors.Check if Intellij shows no problems under File > Project Structure > Problems. There are no problems.
I also saw the dependency tree with mvn dependency:tree -Dverbose. It has a lot of "omitted for duplicate" and "omitted for conflict with" items, but the build was successful. I don't see any errors though. Does this mean that everything is okay or do I have to do something more about these conflicts ?
java maven
asked Mar 27 at 17:28
MasterJoe2MasterJoe2
5087 silver badges31 bronze badges
I use both Intellij IDEA (2018.3.5) & Eclipse IDEs, but I prefer Intellij. I have a maven based Java project with multiple poms. I added some dependencies to one of the pom files. I need to find out if there are any dependency conflicts which could prevent the build from running when its deployed, and then exclude them. I tried the steps given below to find conflicts which could cause problems. Are they enough or do I need to do more ?
Check if there are any compile time dependency conflicts with
mvn clean install -DskipTests. Build was successful with no errors.Check if Intellij shows no problems under File > Project Structure > Problems. There are no problems.
I also saw the dependency tree with mvn dependency:tree -Dverbose. It has a lot of "omitted for duplicate" and "omitted for conflict with" items, but the build was successful. I don't see any errors though. Does this mean that everything is okay or do I have to do something more about these conflicts ?
java maven
java maven
asked Mar 27 at 17:28
MasterJoe2MasterJoe2
5087 silver badges31 bronze badges
asked Mar 27 at 17:28
MasterJoe2MasterJoe2
5087 silver badges31 bronze badges
edited Mar 27 at 19:27
MasterJoe2
asked Mar 27 at 17:28
MasterJoe2MasterJoe2
5087 silver badges31 bronze badges
asked Mar 27 at 17:28
MasterJoe2MasterJoe2
5087 silver badges31 bronze badges
asked Mar 27 at 17:28
MasterJoe2MasterJoe2
5087 silver badges31 bronze badges
5087 silver badges31 bronze badges
add a comment |
add a comment |
1 Answer
1
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The best way to tell if everything is fine with your application is to have good tests.
However normally one doesn't exclude transitive dependencies from project's <dependency> libraries. Doing it can potentially break the dependency in a subtle and hard to notice way. It's usually safer to remove the whole <dependency>.
There are few scenario when one should use <exclude>:
Dealing with incompatible transitive dependencies between different libraries e.g. A requires library C-1.0 but library B requires library C-2.0 while C-1.0 and C-2.0 can't coexist on the classpath.
Having transitive dependencies already provided by system e.g. deploying to Tomcat with additional JARs in the
TOMCAT_HOME/libdirectory.
If you decide to exclude a dependency it's important that you check the final artifact because sometimes plugins do weird things e.g. there were versions of maven-assembly-plugin affected by a bug that resulted in different dependencies being resolved during shaded JAR creation than maven-dependency-plugin used for compilation.
answered Mar 27 at 17:36
Karol DowbeckiKarol Dowbecki
30.1k9 gold badges43 silver badges62 bronze badges
Thanks. I haven't removed any <exclude>. I want to find out if I need to exclude anything just because of adding some new dependencies to one of the poms. I updated my title just now to clarify. mvn clean package - I see some test failures after this. I am looking into them.
– MasterJoe2
Mar 27 at 19:26
The only good answer is: have good enough tests to tell you that you can release if the project builds. Try to decrease number of dependencies if you don't need them.
– Karol Dowbecki
Mar 27 at 19:31
It was suggested to me that I run the app. Thats when a dependency conflict came up. I don't know if this is also needed to discover conflicts.
– MasterJoe2
May 21 at 20:13
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
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active
oldest
votes
The best way to tell if everything is fine with your application is to have good tests.
However normally one doesn't exclude transitive dependencies from project's <dependency> libraries. Doing it can potentially break the dependency in a subtle and hard to notice way. It's usually safer to remove the whole <dependency>.
There are few scenario when one should use <exclude>:
Dealing with incompatible transitive dependencies between different libraries e.g. A requires library C-1.0 but library B requires library C-2.0 while C-1.0 and C-2.0 can't coexist on the classpath.
Having transitive dependencies already provided by system e.g. deploying to Tomcat with additional JARs in the
TOMCAT_HOME/libdirectory.
If you decide to exclude a dependency it's important that you check the final artifact because sometimes plugins do weird things e.g. there were versions of maven-assembly-plugin affected by a bug that resulted in different dependencies being resolved during shaded JAR creation than maven-dependency-plugin used for compilation.
answered Mar 27 at 17:36
Karol DowbeckiKarol Dowbecki
30.1k9 gold badges43 silver badges62 bronze badges
Thanks. I haven't removed any <exclude>. I want to find out if I need to exclude anything just because of adding some new dependencies to one of the poms. I updated my title just now to clarify. mvn clean package - I see some test failures after this. I am looking into them.
– MasterJoe2
Mar 27 at 19:26
The only good answer is: have good enough tests to tell you that you can release if the project builds. Try to decrease number of dependencies if you don't need them.
– Karol Dowbecki
Mar 27 at 19:31
It was suggested to me that I run the app. Thats when a dependency conflict came up. I don't know if this is also needed to discover conflicts.
– MasterJoe2
May 21 at 20:13
add a comment |
The best way to tell if everything is fine with your application is to have good tests.
However normally one doesn't exclude transitive dependencies from project's <dependency> libraries. Doing it can potentially break the dependency in a subtle and hard to notice way. It's usually safer to remove the whole <dependency>.
There are few scenario when one should use <exclude>:
Dealing with incompatible transitive dependencies between different libraries e.g. A requires library C-1.0 but library B requires library C-2.0 while C-1.0 and C-2.0 can't coexist on the classpath.
Having transitive dependencies already provided by system e.g. deploying to Tomcat with additional JARs in the
TOMCAT_HOME/libdirectory.
If you decide to exclude a dependency it's important that you check the final artifact because sometimes plugins do weird things e.g. there were versions of maven-assembly-plugin affected by a bug that resulted in different dependencies being resolved during shaded JAR creation than maven-dependency-plugin used for compilation.
answered Mar 27 at 17:36
Karol DowbeckiKarol Dowbecki
30.1k9 gold badges43 silver badges62 bronze badges
Thanks. I haven't removed any <exclude>. I want to find out if I need to exclude anything just because of adding some new dependencies to one of the poms. I updated my title just now to clarify. mvn clean package - I see some test failures after this. I am looking into them.
– MasterJoe2
Mar 27 at 19:26
The only good answer is: have good enough tests to tell you that you can release if the project builds. Try to decrease number of dependencies if you don't need them.
– Karol Dowbecki
Mar 27 at 19:31
It was suggested to me that I run the app. Thats when a dependency conflict came up. I don't know if this is also needed to discover conflicts.
– MasterJoe2
May 21 at 20:13
add a comment |
The best way to tell if everything is fine with your application is to have good tests.
However normally one doesn't exclude transitive dependencies from project's <dependency> libraries. Doing it can potentially break the dependency in a subtle and hard to notice way. It's usually safer to remove the whole <dependency>.
There are few scenario when one should use <exclude>:
Dealing with incompatible transitive dependencies between different libraries e.g. A requires library C-1.0 but library B requires library C-2.0 while C-1.0 and C-2.0 can't coexist on the classpath.
Having transitive dependencies already provided by system e.g. deploying to Tomcat with additional JARs in the
TOMCAT_HOME/libdirectory.
If you decide to exclude a dependency it's important that you check the final artifact because sometimes plugins do weird things e.g. there were versions of maven-assembly-plugin affected by a bug that resulted in different dependencies being resolved during shaded JAR creation than maven-dependency-plugin used for compilation.
answered Mar 27 at 17:36
Karol DowbeckiKarol Dowbecki
30.1k9 gold badges43 silver badges62 bronze badges
The best way to tell if everything is fine with your application is to have good tests.
However normally one doesn't exclude transitive dependencies from project's <dependency> libraries. Doing it can potentially break the dependency in a subtle and hard to notice way. It's usually safer to remove the whole <dependency>.
There are few scenario when one should use <exclude>:
Dealing with incompatible transitive dependencies between different libraries e.g. A requires library C-1.0 but library B requires library C-2.0 while C-1.0 and C-2.0 can't coexist on the classpath.
Having transitive dependencies already provided by system e.g. deploying to Tomcat with additional JARs in the
TOMCAT_HOME/libdirectory.
If you decide to exclude a dependency it's important that you check the final artifact because sometimes plugins do weird things e.g. there were versions of maven-assembly-plugin affected by a bug that resulted in different dependencies being resolved during shaded JAR creation than maven-dependency-plugin used for compilation.
answered Mar 27 at 17:36
Karol DowbeckiKarol Dowbecki
30.1k9 gold badges43 silver badges62 bronze badges
edited May 21 at 20:24
answered Mar 27 at 17:36
Karol DowbeckiKarol Dowbecki
30.1k9 gold badges43 silver badges62 bronze badges
answered Mar 27 at 17:36
Karol DowbeckiKarol Dowbecki
30.1k9 gold badges43 silver badges62 bronze badges
answered Mar 27 at 17:36
Karol DowbeckiKarol Dowbecki
30.1k9 gold badges43 silver badges62 bronze badges
30.1k9 gold badges43 silver badges62 bronze badges
Thanks. I haven't removed any <exclude>. I want to find out if I need to exclude anything just because of adding some new dependencies to one of the poms. I updated my title just now to clarify. mvn clean package - I see some test failures after this. I am looking into them.
– MasterJoe2
Mar 27 at 19:26
The only good answer is: have good enough tests to tell you that you can release if the project builds. Try to decrease number of dependencies if you don't need them.
– Karol Dowbecki
Mar 27 at 19:31
It was suggested to me that I run the app. Thats when a dependency conflict came up. I don't know if this is also needed to discover conflicts.
– MasterJoe2
May 21 at 20:13
add a comment |
Thanks. I haven't removed any <exclude>. I want to find out if I need to exclude anything just because of adding some new dependencies to one of the poms. I updated my title just now to clarify. mvn clean package - I see some test failures after this. I am looking into them.
– MasterJoe2
Mar 27 at 19:26
The only good answer is: have good enough tests to tell you that you can release if the project builds. Try to decrease number of dependencies if you don't need them.
– Karol Dowbecki
Mar 27 at 19:31
It was suggested to me that I run the app. Thats when a dependency conflict came up. I don't know if this is also needed to discover conflicts.
– MasterJoe2
May 21 at 20:13
Thanks. I haven't removed any <exclude>. I want to find out if I need to exclude anything just because of adding some new dependencies to one of the poms. I updated my title just now to clarify. mvn clean package - I see some test failures after this. I am looking into them.
– MasterJoe2
Mar 27 at 19:26
Thanks. I haven't removed any <exclude>. I want to find out if I need to exclude anything just because of adding some new dependencies to one of the poms. I updated my title just now to clarify. mvn clean package - I see some test failures after this. I am looking into them.
– MasterJoe2
Mar 27 at 19:26
The only good answer is: have good enough tests to tell you that you can release if the project builds. Try to decrease number of dependencies if you don't need them.
– Karol Dowbecki
Mar 27 at 19:31
The only good answer is: have good enough tests to tell you that you can release if the project builds. Try to decrease number of dependencies if you don't need them.
– Karol Dowbecki
Mar 27 at 19:31
It was suggested to me that I run the app. Thats when a dependency conflict came up. I don't know if this is also needed to discover conflicts.
– MasterJoe2
May 21 at 20:13
It was suggested to me that I run the app. Thats when a dependency conflict came up. I don't know if this is also needed to discover conflicts.
– MasterJoe2
May 21 at 20:13
add a comment |
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