ProGuard - org.codehaus.jackson.map.JsonMappingException:找不到合适的类型构造函数

Question

我有一个基于Android的应用程序,它使用Rest服务连接到Google App Engine,该应用程序完美运行,直到它在发布之前通过ProGuard进行模糊处理.

运行混淆应用程序时LogCat中报告的错误是:

Unable to convert a [application/json,UTF-8] representation into an object of 
  class com.enterprisemk.android.bcw.bincollection.WasteCollectionAreasContainer

org.codehaus.jackson.map.JsonMappingException: No suitable constructor found 
  for type [simple type, class 
  com.enterprisemk.android.bcw.bincollection.WasteCollectionAreasContainer]: 
  can not instantiate from JSON object (need to add/enable type information?)

我在proguard-project.txt文件中有以下内容:

-keepattributes *Annotation*,EnclosingMethod

-keep public class org.w3c.** {public private protected *;}
-dontwarn org.w3c.**

-keep public class org.joda.time.** {public private protected *;}
-dontwarn org.joda.time.**

-keep public class org.restlet.** { *; }
-dontwarn org.restlet.**

-keep public class org.codehaus.** { *; }
-dontwarn org.codehaus.**

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

而我的班级错误指的是:

public class WasteCollectionAreasContainer {

 public List<WasteCollectionAreas> wasteCollectionAreasList;

 public List<WasteCollectionAreas> getWasteCollectionAreasList() {
     return wasteCollectionAreasList;
 }

 public void setWasteCollectionAreasist(List<WasteCollectionAreas> wasteCollectionAreasList) {
     this.wasteCollectionAreasList = wasteCollectionAreasList;
 }

 public WasteCollectionAreasContainer() {
     wasteCollectionAreasList = new ArrayList<WasteCollectionAreas>();
 }

 @JsonCreator
 public WasteCollectionAreasContainer(List<WasteCollectionAreas> wasteCollectionAreasList) {
     this.wasteCollectionAreasList = wasteCollectionAreasList;
 }
}

要在通过ProGuard进行模糊处理之前重申该应用程序可以完美运行.
任何人都可以帮我解决这个问题吗？

Answer 1

错误信息

org.codehaus.jackson.map.JsonMappingException: No suitable constructor found for type
    [simple type, class com.enterprisemk.android.bcw.bincollection.WasteCollectionAreasContainer]:
    can not instantiate from JSON object (need to add/enable type information?)

表明 Jackson 库正在尝试使用反射反序列化您的类，及其原始名称和带注释的构造函数。ProGuard 无法预见这一点，因此它可能已删除或重命名该类及其构造函数。您可能需要显式保留它们：

-keep class com.enterprisemk.android.bcw.bincollection.WasteCollectionAreasContainer {
    <init>(java.util.List);
}

出于同样的原因，可能还有其他类似的类/字段/方法需要保留。