MongoDB"NumberLong/$ numberLong"；转换回Java对象时出现问题 [英] MongoDB "NumberLong/$numberLong" issue while converting back to Java Object

问题描述

我有一个像{"Header" : {"name" : "TestData", "contactNumber" : 8019071740}}

如果我将此插入到mongoDB中，它将类似于

If i insert this to mongoDB it will be something like

{"_id" : ObjectId("58b7e55097989619e4ddb0bb"),"Header" : {"name" : "TestData","contactNumber" : NumberLong(8019071743)}

当我读回此数据并尝试使用Gson转换为java对象时，它会抛出异常com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected a long but was BEGIN_OBJECT at line 1 column 109 path $.Header.contactNumber

When i read this data back and try to convert to java object using Gson it throws exception com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected a long but was BEGIN_OBJECT at line 1 column 109 path $.Header.contactNumber

我发现了此，但是我想知道我是否具有非常复杂的json结构，那么我可能需要用这种方法来操纵许多json节点.

I have found this, But i was wondering if i have very complex json structure then i might need to manipulate many json nodes in this approach.

有人在这方面有更好的选择吗?

Do anyone has any better alternatives on this.

修改:1 我正在阅读如下查询和转换json

1 I am reading querying and converting json as below

Document MongoDocument = mycollection.find(searchCondition);
String resultJson =  MongoDocument.toJson();
Gson gson = new Gson();
Model model= gson.fromJson(resultJson, ItemList.class);

推荐答案

看看:我有同样的问题. com.mongodb.util.JSON.serialize(document)的变通办法可以解决问题.

I had the same problem. The workaround with com.mongodb.util.JSON.serialize(document) does the trick.

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