swagger-2.0 - 嵌套异常是 java.lang.NoClassDefFoundError : com/fasterxml/jackson/databind/ser/std/ToStringSerializerBase

Question

current version jackson-databind-2.9.10.1.jar
need to upgrade jackson-databind-2.11.1.jar

我找不到 ToStringSerializerBase jackson 更新 jar 的新版本中的类

org.springframework.beans.BeanInstantiationException: Failed toinstantiate [com.fasterxml.jackson.datatype.jsr310.JavaTimeModule]:Unresolvable class definition; nested exception isjava.lang.NoClassDefFoundError:com/fasterxml/jackson/databind/ser/std/ToStringSerializerBase

我发现内部依赖

<dependency>
     <groupId>io.springfox</groupId>
     <artifactId>springfox-swagger2</artifactId>
     <version>2.10.5</version>
</dependency>

知道我该如何解决这个问题吗？

Answer 1

我在 Spring vs. Jackson 中遇到了类似的错误，并解决了它，见下文。

我对 Spring 的东西有很多依赖，以下对 Jackson 的依赖:

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.9</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.9.9</version>
        </dependency>

我跑了 mvn dependency:tree|grep jackson并看到了冲突版本:

[INFO] |     +- com.fasterxml.jackson.datatype:jackson-datatype-jdk8:jar:2.11.4:compile
[INFO] |     +- com.fasterxml.jackson.datatype:jackson-datatype-jsr310:jar:2.11.4:compile
[INFO] |     \- com.fasterxml.jackson.module:jackson-module-parameter-names:jar:2.11.4:compile
[INFO] +- com.fasterxml.jackson.core:jackson-databind:jar:2.9.9:compile
[INFO] |  \- com.fasterxml.jackson.core:jackson-annotations:jar:2.11.4:compile
[INFO] \- com.fasterxml.jackson.core:jackson-core:jar:2.9.9:compile

因此，我更改了直接导入到我的 pom.xml 中的 Jackson 版本。匹配 Spring 的一个并且一切顺利:

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.11.4</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.11.4</version>
        </dependency>

希望这可以帮助。享受!