如何在Java中修改现有的jsonobject

I have an existing jsonobject from the javax.json.JsonObject class.

我有一个来自javax.json的现有jsonobject。JsonObject类。

I can't for the life of me figure out how I can modify the existing values in it. Ideally I'd like to do something like this:

我不知道如何修改它的现有值。理想情况下，我想做这样的事情:

if(object.getString("ObjectUUID").length()==0){
    object.put("ObjectUUID", UUID.randomUUID().toString());
}

According to the API you aren't allowed to modify that map.

根据API，您不允许修改映射。

http://docs.oracle.com/javaee/7/api/javax/json/JsonObject.html

This map object provides read-only access to the JSON object data, and attempts to modify the map, whether direct or via its collection views, result in an UnsupportedOperationException.

这个map对象提供对JSON对象数据的只读访问，并尝试修改映射，无论是直接的还是通过它的集合视图，都会导致UnsupportedOperationException。

Currently I'm getting around the problem with a quick hack but there must be a better solution than this:

目前我正在用一种快速的方法来解决这个问题，但是肯定有比这个更好的解决方案:

if(object.getString("ObjectUUID").length()==0){
    JsonObjectBuilder job = Json.createObjectBuilder();
    job.add("ObjectUUID", UUID.randomUUID().toString());
    for(String key : object.keySet()){
        if(!key.equals("ObjectUUID")){
            job.add(key, object.get(key));
        }
    }
    object = job.build();
}

So the question how do you modify an existing jsonobject?

问题是如何修改现有的jsonobject?

2 个解决方案

#1

GSON Guide;

GSON指南;

obj.addProperty("Id", "001");

System.out.println("Before: " + obj.get("Id")); // 001

obj.addProperty("Id", "002");

System.out.println("After: " + obj.get("Id")); // 002

#2

I think there is no other way to modify a javax.json.JsonObject.

我认为没有其他方法可以修改javax.json.JsonObject。

You should consider using jackson-databind.

您应该考虑使用jackson-databind。

#1