Spring 工具套件 - NoClassDefFoundError MappingJackson2XmlHttpMessageConverter [英] Spring Tool Suite - NoClassDefFoundError MappingJackson2XmlHttpMessageConverter

问题描述

我是 Spring 的新手，我开始从他的网站上学习它.理解Java对我来说并不难，但我对环境有问题.我按照本指南使用 Spring Boot 创建一个新项目，一切都很顺利https://spring.io/guides/gs/spring-boot/>

现在我想从 Spring Tool Suite 运行这个项目，但是当我尝试在 Pivotal 或 Tomcat 服务器上运行相同的代码时出现此错误.

<块引用>

无法实例化[org.springframework.boot.autoconfigure.web.HttpMessageConverters]:>工厂方法'messageConverters'抛出异常；嵌套异常是 java.lang.NoClassDefFoundError:org/springframework/http/converter/xml/MappingJackson2XmlHttpMessageConverter

Spring 开发人员对修复我的工作流程有什么帮助吗?

解决方案

当您尝试通过服务器运行项目时，首先使用 maven 构建它，以便下载所有依赖项.这也有助于下载 MappingJackson2XmlHttpMessageConverter 类.构建后将您创建的战争部署到服务器中.

I am new to Spring and I am starting to learn it from his website. Understanding Java is not difficult to me, but I have trouble with the environment. I followed this guide for using Spring Boot for creating a new project and everything went great https://spring.io/guides/gs/spring-boot/

Now I would like to run this project from the Spring Tool Suite but I get this error when I try to run the same code on Pivotal or Tomcat server.

Failed to instantiate [org.springframework.boot.autoconfigure.web.HttpMessageConverters]: >Factory method 'messageConverters' threw exception; nested exception is java.lang.NoClassDefFoundError:org/springframework/http/converter/xml/MappingJackson2XmlHttpMessageConverter

Any help from Spring developers for fixing my workflow?

解决方案

When you try to run the project via a server, first build it using maven so that all the dependencies are downloaded. This helps to download MappingJackson2XmlHttpMessageConverter class also. After building it deploy the war you create into the server.

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