Proguard导致Jackson错误 [英] Proguard causes Jackson error

问题描述

启用Proguard规则后，我面临以下问题 因此，在将任何内容发送到网络之前都会出现错误.

After enabling proguard rules I faced with the following So error come before sending anything to network.

java.lang.RuntimeException:无法转换 FormDocTankPermission到RequestBody

java.lang.RuntimeException: Unable to convert FormDocTankPermission to RequestBody

由

com.fasterxml.jackson.databind.exc.InvalidDefinitionException:否 找到类FormDocTankPermission的序列化器，没有属性 发现创建BeanSerializer(为避免异常，请禁用 SerializationFeature.FAIL_ON_EMPTY_BEANS)

com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class FormDocTankPermission and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS)

我以@Retrofit.Body的形式发送的课程如下所示:

My class that I send as @Retrofit.Body look like following:

class FormDocTankPermission  (
        @get:JsonProperty("fuelCardId")
        val fuelCardId: Long,
        @get:JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
        @get:JsonProperty("validityDate")
        val validityDate: Date
)

我认为@get:JsonProperty会导致问题

I assume that somehow @get:JsonProperty causes ISSUE

我像这样cretea翻新

I cretea Retrofit like this

Builder()
.[...]
.addConverterFactory(JacksonConverterFactory.create())

杰克逊的Proguard规则

Proguard rules for Jackson

# Jackson
-keep class com.fasterxml.jackson.databind.ObjectMapper {
    public <methods>;
    protected <methods>;
}
-keep class com.fasterxml.jackson.databind.ObjectWriter {
    public ** writeValueAsString(**);
}
-keepnames class com.fasterxml.jackson.** { *; }
-dontwarn com.fasterxml.jackson.databind.**

推荐答案

Proguard可能会删除自定义序列化器/反序列化器的默认构造函数. 在这种情况下，该规则对我有帮助:

Proguard may remove default constructor of custom serializers/deserializers. That rules help me in such case:

-keepclassmembers class ** extends com.fasterxml.jackson.databind.ser.std.** {
   public <init>(...);
}

-keepclassmembers class ** extends com.fasterxml.jackson.databind.deser.std.** {
   public <init>(...);
}

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