extracting common code in springboot using maven












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I have 2 spring-boot projects. One is 2.1.0 version, another 2.0.4. These projects has some duplicate classes/methods, and I'd like to extract them to common place. Both project has common parent to share distributionManagement data, and in each project spring-boot bom is imported. I'd like to have possibility of independent spring-boot versions in these projects, and it seems to me, that correct way to go is to move common code into new dependency, new jar.



But I don't know how to correctly do that. Lets say, that I'm extracting functionality, that requires some maven dependency, which is defined in both projects, and its version is imported from spring-boot bom. Thus project with newer spring-boot version could import newer dependency than other project. But what version should I use for newly created jar?



I don't think it's a good idea to import either spring-boot bom there, as there might be also non-springboot user of that library, hypothetically speaking. Or should I declare in extracted library the oldest version and let maven resolution to it's job? But that can make shorter path to this new dependency and although using newer spring, I would be using older dependency...



Can someone advice on this? I'm really lost in it.










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    I have 2 spring-boot projects. One is 2.1.0 version, another 2.0.4. These projects has some duplicate classes/methods, and I'd like to extract them to common place. Both project has common parent to share distributionManagement data, and in each project spring-boot bom is imported. I'd like to have possibility of independent spring-boot versions in these projects, and it seems to me, that correct way to go is to move common code into new dependency, new jar.



    But I don't know how to correctly do that. Lets say, that I'm extracting functionality, that requires some maven dependency, which is defined in both projects, and its version is imported from spring-boot bom. Thus project with newer spring-boot version could import newer dependency than other project. But what version should I use for newly created jar?



    I don't think it's a good idea to import either spring-boot bom there, as there might be also non-springboot user of that library, hypothetically speaking. Or should I declare in extracted library the oldest version and let maven resolution to it's job? But that can make shorter path to this new dependency and although using newer spring, I would be using older dependency...



    Can someone advice on this? I'm really lost in it.










    share|improve this question

























      0












      0








      0







      I have 2 spring-boot projects. One is 2.1.0 version, another 2.0.4. These projects has some duplicate classes/methods, and I'd like to extract them to common place. Both project has common parent to share distributionManagement data, and in each project spring-boot bom is imported. I'd like to have possibility of independent spring-boot versions in these projects, and it seems to me, that correct way to go is to move common code into new dependency, new jar.



      But I don't know how to correctly do that. Lets say, that I'm extracting functionality, that requires some maven dependency, which is defined in both projects, and its version is imported from spring-boot bom. Thus project with newer spring-boot version could import newer dependency than other project. But what version should I use for newly created jar?



      I don't think it's a good idea to import either spring-boot bom there, as there might be also non-springboot user of that library, hypothetically speaking. Or should I declare in extracted library the oldest version and let maven resolution to it's job? But that can make shorter path to this new dependency and although using newer spring, I would be using older dependency...



      Can someone advice on this? I'm really lost in it.










      share|improve this question













      I have 2 spring-boot projects. One is 2.1.0 version, another 2.0.4. These projects has some duplicate classes/methods, and I'd like to extract them to common place. Both project has common parent to share distributionManagement data, and in each project spring-boot bom is imported. I'd like to have possibility of independent spring-boot versions in these projects, and it seems to me, that correct way to go is to move common code into new dependency, new jar.



      But I don't know how to correctly do that. Lets say, that I'm extracting functionality, that requires some maven dependency, which is defined in both projects, and its version is imported from spring-boot bom. Thus project with newer spring-boot version could import newer dependency than other project. But what version should I use for newly created jar?



      I don't think it's a good idea to import either spring-boot bom there, as there might be also non-springboot user of that library, hypothetically speaking. Or should I declare in extracted library the oldest version and let maven resolution to it's job? But that can make shorter path to this new dependency and although using newer spring, I would be using older dependency...



      Can someone advice on this? I'm really lost in it.







      spring-boot maven-3






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      asked Nov 12 '18 at 12:33









      Martin Mucha

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