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Jackson ObjectMapper冲突的setter定义（Android.Graphics.Bitmap）

javaandroidjsonjackson
8
我有这个方法：
 public static Response deserializeResponse(String jsonResponse) throws JsonParseException, JsonMappingException, IOException {

    ObjectMapper mapper = new ObjectMapper();

    try{
        return mapper.readValue(jsonResponse, Response.class);
    }catch(JsonParseException e){
        e.printStackTrace();
    }catch(JsonMappingException e){
        e.printStackTrace();
    }catch(IOException e){
        e.printStackTrace();
    }
    return null;
}

这里是Response类：
public static class Response {

    public String RequestType;

    public Data data;

    public void SetRequestType(String requestType) { this.RequestType = requestType; }

    @JsonIgnore
    @JsonProperty("data")
    public void SetData(Data data) { this.data = data; }

    public Response(){
        data = new Data();
    }

    public static class Data {

        public String Status;
        public String ErrorCode;
        public int versionCode;
        public String Expiry;
        public String ProductSKU;
        public String Email;
        public String Birthday;
        public String PictureUrl;
        public String Pin;
        public List<PhoneNumber> Numbers = new ArrayList<PhoneNumber>();
        public int IdTransaction;
        public int SubProductId;

        public List<Performer> Performers = new ArrayList<Performer>();
        public Client Client;

        public Data() {}
    }
}

以下是另一个类的调用：

Response rep = JsonOperation.deserializeResponse(jsonString);

我在一台使用Android 2.3.6的设备上运行了这段代码，一切都很完美。 但是当我在我的Galaxy Note 3或S4上运行此代码时，出现了多个错误。以下是日志：

W/System.err﹕ com.fasterxml.jackson.databind.JsonMappingException: Conflicting setter     definitions for property "imagePath": android.graphics.Bitmap#setImagePath(1 params) vs android.graphics.Bitmap#setImagePath(1 params)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:269)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:143)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.DeserializationContext.findContextualValueDeserializer(DeserializationContext.java:325)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.std.StdDeserializer.findDeserializer(StdDeserializer.java:633)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.resolve(BeanDeserializerBase.java:427)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:295)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:143)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.DeserializationContext.findContextualValueDeserializer(DeserializationContext.java:325)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.createContextual(CollectionDeserializer.java:147)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.createContextual(CollectionDeserializer.java:23)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.DeserializationContext.findContextualValueDeserializer(DeserializationContext.java:329)
03-21 15:51:54.373  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.std.StdDeserializer.findDeserializer(StdDeserializer.java:633)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.resolve(BeanDeserializerBase.java:427)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:295)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:143)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.DeserializationContext.findContextualValueDeserializer(DeserializationContext.java:325)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.std.StdDeserializer.findDeserializer(StdDeserializer.java:633)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.resolve(BeanDeserializerBase.java:427)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:295)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:143)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer(DeserializationContext.java:342)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.ObjectMapper._findRootDeserializer(ObjectMapper.java:2895)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:2789)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:1943)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.francovoyance.JsonOperation.deserializeResponse(JsonOperation.java:321)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.francovoyance.HttpOperation$HttpPostRequest.doInBackground(HttpOperation.java:125)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.francovoyance.HttpOperation$HttpPostRequest.doInBackground(HttpOperation.java:69)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at android.os.AsyncTask$2.call(AsyncTask.java:287)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at java.util.concurrent.FutureTask.run(FutureTask.java:234)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at java.lang.Thread.run(Thread.java:841)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ Caused by: java.lang.IllegalArgumentException: Conflicting setter definitions for property "imagePath": android.graphics.Bitmap#setImagePath(1 params) vs android.graphics.Bitmap#setImagePath(1 params)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.introspect.POJOPropertyBuilder.getSetter(POJOPropertyBuilder.java:196)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.filterBeanProps(BeanDeserializerFactory.java:614)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.addBeanProps(BeanDeserializerFactory.java:522)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.buildBeanDeserializer(BeanDeserializerFactory.java:267)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:171)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(DeserializerCache.java:388)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:264)
03-21 15:51:54.383  15204-15218/com.francovoyance W/System.err﹕ ... 36 more

以下是服务器返回的Json输入：

private string CheckVersion(JObject jsonObject)
{
    StringBuilder sb = new StringBuilder();
    StringWriter sw = new StringWriter(sb);
    using (JsonWriter writer = new JsonTextWriter(sw))
    {
        writer.Formatting = Formatting.Indented;
        writer.WriteStartObject();

        writer.WritePropertyName("RequestType");
        writer.WriteValue("CheckVersion");

        writer.WritePropertyName("data");
        writer.WriteStartObject();

        writer.WritePropertyName("Status");

        string inVersion = (string)jsonObject["data"]["versionCode"];
        string actualVersion = WebTV.Common.AppSettings.GetString("APP_VERSION", "1");
        actualVersion = Convert.ToString((int)Convert.ToDouble(actualVersion));

        if (inVersion.Equals(actualVersion))
        {
            writer.WriteValue("Ok");
        }
        else
        {
            writer.WriteValue("Error");

            writer.WritePropertyName("versionCode");
            writer.WriteRawValue(actualVersion);
        }

        writer.WriteEndObject();

    }
    return sb.ToString();
}

我搜索并尝试找到关于在android.graphics.Bitmap中使用setter的解决办法，但是没有找到任何内容...我尝试使用@JsonIgnore，但没有任何结果。当我尝试使用映射器时，我需要帮助解决异常问题。感谢您的任何帮助。

展示你的JSON输入，特别是imagePath键 - 这就是问题所在。 - fge
我遇到了类似的问题。在Galaxy Nexus和Nexus 5上可以运行，但在我的S4（Play edition; 4.2.2）上失败了。 - Sam
1个回答
10

我刚刚解决了这个问题（对我来说），尽管它感觉更像是三星设备的一种变通方法。我知道你提到过尝试使用@JsonIgnore注释，但它却成功地解决了我的问题。

在我的模型中，我仅将JSON映射到了我的基本模型的一个小子集上。然而在这个基本模型中，我有一个包含位图的另一个对象模型的列表。通过在模型列表上添加@JsonIgnore，问题得到了解决（虽然我没有映射它们，它们本应被忽略）。

之前我一直在使用ObjectMapper功能来忽略未使用的值，但它在三星设备上无法正常工作。

ObjectMapper mapper = new ObjectMapper();
mapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
在下面的示例中，我的个人资料对象包含一个位图，我只用JSON映射名称和年龄。
示例：
public class A {

private String name;

private int age;
@JsonIgnore
private List<Profile> profiles;
}

如果我必须猜测的话，我会说你上面的Performer对象包含一个位图，如果你没有映射到它，那么我会尝试忽略List。

1
这个答案非常有帮助，我也遇到了S3、S4、S4 mini和S5的同样问题。如果你在类成员中有一个setter和getter，并且其中包含Bitmap，则你需要在它们上面添加@JsonIgnore注释。 - marp
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