如何从Spring Boot Pom中排除或更换Jackson

Question

I'm using spring boot 1.5.12.RELEASE. It is working fine and I'm able to build the project.

But now I want to upgrade the spring boot version to 1.5.15.RELEASE. and I'm getting below error.

Plugin org.springframework.boot:spring-boot-maven-plugin:1.5.15.RELEASE or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.springframework.boot:spring-boot-maven-plugin:jar:1.5.15.RELEASE: Failure to transfer com.fasterxml.jackson:jackson-bom:pom:2.8.11.20180608

I have my repository so I can't download the file from maven repo. I'm having the version for jackson 2.8.11.20180217. I don't have the version 2.8.11.20180608.

So is there any way to use the version 2.8.11.20180217 instead of 2.8.11.20180608 or not use jackson.

Answer 1

Add the maven dependency for the jackson version you want and exclude jackson dependency for all the modules that need id :

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <exclusions>
            <exclusion>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-core</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-annotations</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

Answer 2

Most probably you are inheriting the jar from some of your dependencies. First, search where is the dependency that you need to exclude with:

mvn dependency:tree -Dverbose

The -Dverbose option will show all dependencies, even the ones removed.

Read here for more info

Then, when you find it, select the dependency that has that inside of it, and exclude with

    <dependency>
        <groupId>groupId</groupId>
        <artifactId>artifactId</artifactId>
        <version>xxx</version>
        <exclusions> <!-- This is what you need to add -->
            <exclusion>
                <groupId>theGroupIdToExclude</groupId>
                <artifactId>theArtifactIdToExclude</artifactId>
            </exclusion>
        </exclusions>
    </dependency>