杰克逊：如何序列化为一个未命名的数组

This is my POJO.

这是我的POJO。

public class FolderPage {

private List<ApplicationIcon> applications;

public List<ApplicationIcon> getApplications() {
    return applications;
}

public void setApplications(List<ApplicationIcon> applications) {
    this.applications = applications;
}

@JsonCreator
public FolderPage(List<ApplicationIcon> applications) {
    super();
    this.applications = applications;
}
}

Currently it serializes as the below json { "applications": [{ "application": { "id": "com.microsoft.onenote", "name": "Micrsoft OneNote" } }, { "application": { "id": "com.microsoft.Office.word", "name": "Microsoft word" } }] }

目前它序列化为以下json {“applications”:[{“application”:{“id”:“com.microsoft.onenote”,“name”:“Micrsoft OneNote”}},{“application”:{“id “:”com.microsoft.Office.word“,”name“:”Microsoft word“}}]}

However I want to serialize it into an unnamed json array like the below

但是我想将它序列化为一个未命名的json数组,如下所示

[{
    "application": {
        "id": "com.microsoft.onenote",
        "name": "Micrsoft OneNote"
    }
}, {
    "application": {
        "id": "com.microsoft.Office.word",
        "name": "Microsoft word"
    }
}]

How can I achieve the same?

我怎样才能实现同样的目标?

EDIT POJO representing my application object

编辑POJO代表我的应用程序对象

@JsonRootName("application")
@JsonIgnoreProperties(ignoreUnknown = true)
@JsonInclude(JsonInclude.Include.NON_NULL)
public class ApplicationIcon extends Icon {

    private String id;
    private String name;
}

1 个解决方案

#1

Assuming ApplicationIcon has getId() and getName(). You can do it with custom Serializer:

假设ApplicationIcon有getId()和getName()。您可以使用自定义Serializer执行此操作:

public static class FolderPageSearialer extends JsonSerializer<FolderPage> {

        @Override
        public void serialize(FolderPage o, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
            List<ApplicationIcon> applications = o.getApplications();
            jsonGenerator.writeStartArray(applications.size());
            for (ApplicationIcon application : applications) {
                jsonGenerator.writeStartObject();
                jsonGenerator.writeFieldName("application");
                jsonGenerator.writeStartObject();
                jsonGenerator.writeStringField("id", application.getId());
                jsonGenerator.writeStringField("name", application.getName());
                jsonGenerator.writeEndObject();
                jsonGenerator.writeEndObject();
            }
            jsonGenerator.writeEndArray();
        }
    }

And add @JsonSerialize on FolderPage class:

并在FolderPage类上添加@JsonSerialize:

@JsonSerialize(using = FolderPage.FolderPageSearialer.class)
public class FolderPage

#1