weblogic12c java.lang.NoSuchMethodError: com.fasterxml.jackson.databind.ObjectWriter

问题：https://community.oracle.com/thread/4049490

输出log：

java.lang.NoSuchMethodError: com.fasterxml.jackson.databind.ObjectWriter.forType(Lcom/fasterxml/jackson/databind/JavaType;)Lcom/fasterxml/jackson/databind/ObjectWriter;
    at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:278)
    at org.springframework.http.converter.AbstractGenericHttpMessageConverter.write(AbstractGenericHttpMessageConverter.java:100)
    at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:231)
    at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:174)
    at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:81)
    Truncated. see log file for complete stacktrace

解决方法：

打开项目weblogic.xml 

<?xml version="1.0" encoding="UTF-8"?>
<wls:weblogic-web-app xmlns:wls="http://xmlns.oracle.com/weblogic/weblogic-web-app" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd http://xmlns.oracle.com/weblogic/weblogic-web-app http://xmlns.oracle.com/weblogic/weblogic-web-app/1.3/weblogic-web-app.xsd">
    <wls:weblogic-version>10.3.6</wls:weblogic-version>
    <wls:context-root>luozhuang</wls:context-root>
    <wls:container-descriptor>
        <wls:prefer-web-inf-classes>false</wls:prefer-web-inf-classes>
        <wls:prefer-application-packages>
            <wls:package-name>org.slf4j</wls:package-name>
            <wls:package-name>org.springframework.*</wls:package-name>
            <wls:package-name>com.fasterxml.jackson.*</wls:package-name>
        </wls:prefer-application-packages>
    </wls:container-descriptor>    
</wls:weblogic-web-app>

关键代码：让weblogic 使用项目jar包

 <wls:container-descriptor>
        <wls:prefer-web-inf-classes>false</wls:prefer-web-inf-classes>
        <wls:prefer-application-packages>
            <wls:package-name>org.slf4j</wls:package-name>
            <wls:package-name>org.springframework.*</wls:package-name>
            <wls:package-name>com.fasterxml.jackson.*</wls:package-name>
        </wls:prefer-application-packages>
    </wls:container-descriptor>