徹底解決maven項目中jackson編譯報錯，提示Failure to find com.fasterxml.jackson:jackson-bom:pom

今天在架構改造中發現，原來eclipse項目中使用了jackson依賴，編譯不報錯而且不會提示缺少jackson-bom.jar。在新的springboot2.1.4的項目中發現報錯，錯誤消息如下：

org.apache.maven.plugins:maven-clean-plugin:3.1.0:clean
[INFO] Scanning for projects...
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] Non-resolvable import POM: Failure to find com.fasterxml.jackson:jackson-bom:pom:1.9.9 in http://maven.aliyun.com/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the update interval of aliyun has elapsed or updates are forced @ org.springframework.boot:spring-boot-dependencies:2.1.4.RELEASE, C:\Users\renkai721\.m2\repository\org\springframework\boot\spring-boot-dependencies\2.1.4.RELEASE\spring-boot-dependencies-2.1.4.RELEASE.pom, line 605, column 13
 @ 
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]   

 

操作剖析：

1、我們常規的使用方式如下，現在頂部定義一個版本

<properties>
	<jackson.version>1.9.9</jackson.version>
</properties>

2、在dependency中使用方式如下，這樣就會報錯。

<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-core-lgpl</artifactId>
			<version>${jackson.version}</version>
		</dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-core-asl</artifactId>
			<version>${jackson.version}</version>
		</dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-lgpl</artifactId>
			<version>${jackson.version}</version>
		</dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-asl</artifactId>
			<version>${jackson.version}</version>
		</dependency>

 

 

解決方法如下：

1、刪除頂部定義的版本，直接寫在version中。正確的寫法如下

<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-core-lgpl</artifactId>
			<version>1.9.9</version>
		</dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-core-asl</artifactId>
			<version>1.9.9</version>
		</dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-lgpl</artifactId>
			<version>1.9.9</version>
		</dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-asl</artifactId>
			<version>1.9.9</version>
		</dependency>

2、重新clean，試一試。