Android Studio：在发布模式下生成签名 Apk 时发出警告警告：com.fasterxml.jackson.databind

Question

我在一个Android项目中使用jackson-json依赖，在release模式下生成Signed Apk，出现如下错误：

Warning:com.fasterxml.jackson.databind.ext.DOMSerializer: can't find referenced class org.w3c.dom.bootstrap.DOMImplementationRegistry
Warning:com.fasterxml.jackson.databind.ext.Java7SupportImpl: can't find referenced class java.beans.Transient
Warning:com.fasterxml.jackson.databind.ext.Java7SupportImpl: can't find referenced class java.beans.ConstructorProperties
Warning:com.fasterxml.jackson.databind.ext.Java7SupportImpl: can't find referenced class java.nio.file.Path
Warning:com.fasterxml.jackson.databind.ext.Java7SupportImpl: can't find referenced class java.beans.Transient
Warning:com.fasterxml.jackson.databind.ext.Java7SupportImpl: can't find referenced class java.beans.ConstructorProperties
Warning:com.fasterxml.jackson.databind.ext.Java7SupportImpl: can't find referenced class java.beans.Transient
Warning:com.fasterxml.jackson.databind.ext.Java7SupportImpl: can't find referenced class java.beans.ConstructorProperties
Warning:com.fasterxml.jackson.databind.ext.Java7SupportImpl: can't find referenced class java.beans.Transient
Warning:com.fasterxml.jackson.databind.ext.Java7SupportImpl: can't find referenced class java.beans.ConstructorProperties
Warning:com.fasterxml.jackson.databind.ext.NioPathDeserializer: can't find referenced class java.nio.file.Path
Warning:com.fasterxml.jackson.databind.ext.NioPathDeserializer: can't find referenced class java.nio.file.Paths
Warning:com.fasterxml.jackson.databind.ext.NioPathDeserializer: can't find referenced class java.nio.file.Path
Warning:com.fasterxml.jackson.databind.ext.NioPathSerializer: can't find referenced class java.nio.file.Path
Warning:there were 26 unresolved references to classes or interfaces.
Warning:Exception while processing task java.io.IOException: Please correct the above warnings first.


Error:Execution failed for task':app:transformClassesAndResourcesWithProguardForRelease'.> Job failed, see logs for details
Information:BUILD FAILED
Information:Total time: 17.808 secs
Information:1 error
Information:16 warnings

Answer 1

基于 this answer 和 this answer，您可以使用以下命令忽略 proguard 文件中的警告：

-keepnames class com.fasterxml.jackson.databind.** { *; }
-dontwarn com.fasterxml.jackson.databind.**

编辑： 要修复以下 cmets 中的新运行时错误，请添加：

 -keepattributes InnerClasses