Jenkins 插件使用来自另一个插件的类，而不是 Maven 依赖项

Question

我正在尝试通过其中一个插件来克服一些依赖差异，方法是删除对 j​​ackson2-api 插件的依赖，并改用直接 jackson maven 依赖。

甚至有可能做这样的事情吗？因为它似乎效果不佳。

https://github.com/cvakiitho/build-failure-analyzer-plugin/commit/c51ed3fbed62f7bb30a854ba8fcea5831649f1d2

BFA 插件似乎仍然使用 jackson2-api 插件中的 jackson 类，而不是直接的 maven 依赖项。 导致https://issues.jenkins-ci.org/browse/JENKINS-62214 在 MongoJack 的 import 中使用了错误的 jackson 版本，导致缺少方法：

java.lang.NoSuchMethodError: com.fasterxml.jackson.databind.introspect.Annotated.getGenericType()Ljava/lang/reflect/Type;
    at org.mongojack.internal.MongoAnnotationIntrospector.getTypeForAnnotated(MongoAnnotationIntrospector.java:81)
    at org.mongojack.internal.MongoAnnotationIntrospector.findDeserializer(MongoAnnotationIntrospector.java:97)

在 jenkins 的类路径中，Jackson2-api 插件的依赖性是否更高？

Answer 1

无法直接回答您，但运行 mvn dependency:analyze 和 mvn dependency:tree 应该可以指导您。

analyze 报告：

[INFO] --- maven-dependency-plugin:3.1.1:analyze (default-cli) @ build-failure-analyzer ---
[WARNING] Used undeclared dependencies found:
[WARNING]    com.fasterxml.jackson.core:jackson-annotations:jar:2.10.2:compile
[WARNING]    com.fasterxml.jackson.core:jackson-databind:jar:2.10.2:compile
[WARNING] Unused declared dependencies found:
[WARNING]    org.jenkins-ci.plugins:jackson2-api:jar:2.10.2:compile

和dependency:tree 报告（选择性列表）：

[WARNING] Using Maven 2 dependency tree to get verbose output, which may be inconsistent with actual Maven 3 resolution
[INFO] com.sonyericsson.jenkins.plugins.bfa:build-failure-analyzer:hpi:1.27.2-SNAPSHOT
[INFO] +- com.sonyericsson.hudson.plugins.gerrit:gerrit-trigger:jar:2.27.5:compile
 ...
[INFO] +- org.jenkins-ci.plugins:slack:jar:2.30:compile
[INFO] |  +- (org.jenkins-ci.plugins:jackson2-api:jar:2.9.9.1:compile - omitted for conflict with 2.10.2)
 ...
[INFO] +- org.mongodb:mongo-java-driver:jar:3.8.2:compile
[INFO] +- org.mongojack:mongojack:jar:2.9.4:compile
[INFO] |  +- org.mongodb:mongodb-driver:jar:3.8.0:compile
[INFO] |  |  +- org.mongodb:bson:jar:3.8.0:compile
[INFO] |  |  \- org.mongodb:mongodb-driver-core:jar:3.8.0:compile
[INFO] |  |     \- (org.mongodb:bson:jar:3.8.0:compile - omitted for duplicate)
[INFO] |  +- de.undercouch:bson4jackson:jar:2.9.2:compile
[INFO] |  |  \- (com.fasterxml.jackson.core:jackson-core:jar:2.9.3:compile - omitted for conflict with 2.9.9)
[INFO] |  +- javax.persistence:persistence-api:jar:1.0.2:compile
[INFO] |  \- commons-io:commons-io:jar:2.6:compile
[INFO] +- org.jenkins-ci.plugins:jackson2-api:jar:2.10.2:compile
[INFO] |  +- com.fasterxml.jackson.core:jackson-databind:jar:2.10.2:compile
[INFO] |  |  +- com.fasterxml.jackson.core:jackson-annotations:jar:2.10.2:compile
[INFO] |  |  \- (com.fasterxml.jackson.core:jackson-core:jar:2.10.2:compile - omitted for duplicate)
[INFO] |  +- com.fasterxml.jackson.datatype:jackson-datatype-jsr310:jar:2.10.2:compile
[INFO] |  |  +- (com.fasterxml.jackson.core:jackson-annotations:jar:2.10.2:compile - omitted for duplicate)
[INFO] |  |  +- (com.fasterxml.jackson.core:jackson-core:jar:2.10.2:compile - omitted for duplicate)
[INFO] |  |  \- (com.fasterxml.jackson.core:jackson-databind:jar:2.10.2:compile - omitted for duplicate)
[INFO] |  +- com.fasterxml.jackson.datatype:jackson-datatype-jdk8:jar:2.10.2:compile
[INFO] |  |  +- (com.fasterxml.jackson.core:jackson-core:jar:2.10.2:compile - omitted for duplicate)
[INFO] |  |  \- (com.fasterxml.jackson.core:jackson-databind:jar:2.10.2:compile - omitted for duplicate)
[INFO] |  +- com.fasterxml.jackson.module:jackson-module-parameter-names:jar:2.10.2:compile
[INFO] |  |  +- (com.fasterxml.jackson.core:jackson-core:jar:2.10.2:compile - omitted for duplicate)
[INFO] |  |  \- (com.fasterxml.jackson.core:jackson-databind:jar:2.10.2:compile - omitted for duplicate)
[INFO] |  +- com.fasterxml.jackson.core:jackson-core:jar:2.10.2:compile
[INFO] |  \- com.fasterxml.jackson.module:jackson-module-jaxb-annotations:jar:2.10.2:compile
[INFO] |     +- (com.fasterxml.jackson.core:jackson-annotations:jar:2.10.2:compile - omitted for duplicate)
[INFO] |     +- (com.fasterxml.jackson.core:jackson-core:jar:2.10.2:compile - omitted for duplicate)
[INFO] |     +- (com.fasterxml.jackson.core:jackson-databind:jar:2.10.2:compile - omitted for duplicate)
[INFO] |     +- jakarta.xml.bind:jakarta.xml.bind-api:jar:2.3.2:compile
[INFO] |     |  \- (jakarta.activation:jakarta.activation-api:jar:1.2.1:compile - omitted for duplicate)
[INFO] |     \- jakarta.activation:jakarta.activation-api:jar:1.2.1:compile

因此，dependency resolution 采用直接/声明的依赖项将覆盖未声明/传递的依赖项（并且较高的 #.#.# 较低）。