Java-编辑现有的JSON文件 [英] Java - Edit existing JSON file

问题描述

嘿，我想知道是否可以编辑一个我知道该位置的json.所以可以说位置是C:\ Something.json那我该如何编辑???

Hey I was wondering if it is possible to edit an existing json I know the location off. So lets say that the location is C:\Something.json then how do I edit it ??.

谢谢

推荐答案

如果您要编辑复杂的JSON结构，建议使用

If you want to edit complex JSON structure I would recommend using GSON library. You can then perform the following steps :

Gson gson = new Gson();
String yourfilecontents; //read contents from File

1)读取JSON文件并将其转换为对象结构.

1) read JSON File and convert it into an object structure.

 YourObject obj = gson.fromJson(yourfilecontents, YourObject.class);

2)根据您的要求修改对象.

2) Modify the object as per your requirement.

obj.field1(newValue);

3)将对象转换为JSON

3) Convert the object into JSON

String newJson = gson.toJson(obj);

4)将JSON(newJson)写回到文件中

4) Write the JSON (newJson) back to the file

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