When using Spring4, there is a case where mappingjacksonhttpmessageconverter is not found at run time

Start Project Error:

[Org.springframework.web.context.contextloader]context Initialization Failedorg.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 findclass[Org.springframework.http.converter.json.MappingJacksonHttpMessageConverter] forBean with Name'org.springframework.http.converter.json.mappingjacksonhttpmessageconverter#2aa148c0' ... ... Caused by:java.lang.ClassNotFoundException: Org.springframework.http.converter.json.MappingJacksonHttpMessageConverter ...

The reason is spring 3.x and 4. X handles a different class of JSON, which is also configured in an XML file, so it cannot be found at compile time.

Spring3.x is org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.

spring4.x is Org.springframework.http.converter.json.MappingJackson2HttpMessageConverter

1. Find and replace all names in XML

2. Add the latest Fastjackson dependencies at the same time

<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>

Problem Solving!

When using Spring4, there is a case where mappingjacksonhttpmessageconverter is not found at run time