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  • 使用Spring4时, 运行时出现找不到MappingJacksonHttpMessageConverter的情况

    启动项目报错:

    [org.springframework.web.context.ContextLoader]Context initialization failed
    org.springframework.beans.factory.BeanCreationException: 
    Error creating bean with name
    'org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter#0' ... ... Caused by: org.springframework.beans.factory.CannotLoadBeanClassException:
    Cannot find
    class [org.springframework.http.converter.json.MappingJacksonHttpMessageConverter] for bean with name 'org.springframework.http.converter.json.MappingJacksonHttpMessageConverter#2aa148c0' ... ... Caused by: java.lang.ClassNotFoundException: org.springframework.http.converter.json.MappingJacksonHttpMessageConverter ... ...

    原因是Spring 3.x 和4.X处理JSON的一个类不一样,而这个东西又配置在xml文件中,所以编译时又无法发现

    spring3.x是org.springframework.http.converter.json.MappingJacksonHttpMessageConverter

    spring4.x是org.springframework.http.converter.json.MappingJackson2HttpMessageConverter

    1. 查找替换所有XML中名字

    2. 同时加入最新的FastJackson依赖

    <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-core</artifactId>
          <version>2.8.5</version>
    </dependency>
    <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-databind</artifactId>
          <version>2.8.5</version>
    </dependency>
    <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-annotations</artifactId>
          <version>2.8.5</version>
    </dependency>

    问题解决!

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  • 原文地址:https://www.cnblogs.com/onmyway20xx/p/7280789.html
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