Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.1k views
in Technique[技术] by (71.8m points)

how to update existing JSON file in java

This is my sample Json

 {
        "State": {
            "version": "1",
            "SName": "Test",
            "shippingDetails": {
                "Address1": "AP",
                "ZipCode": "1236"
            },
            "Directions": {
                "routes": [
                    {
                        "taxAmount": "0.0",
                        "Quantity": "5",
                        "bounds": {
                            "SerialVersion": [
                                {
                                    "text": "1.7 km",
                                    "value": "1729",
                                    "time": "02633"
                                },
                                {
                                    "text": "1.9 km",
                                    "value": "1829",
                                    "time": "02353"
                                },
                                {
                                    "text": "17 km",
                                    "value": "1059",
                                    "time": "02133"
                                }
                            ]
                        }
                    }
                ]
            }
        }
    }

I want to update SName, ZipCode,taxAmount,Quantity, and text[1] values are there any way to do this. I am taking JSON in a file and update tags are taking into HashMap

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)
JSONObject jsonObject = new JSONObject("Your_JSON_String");

JSONObject jsonObjectForState = jsonObject.getJSONObject(“State”);

jsonObjectForState.put("Sname", "New_Value_Here");

put(...) will replace the current value with new value. Similarly, you can update the other values. Once you are done, you can convert it back using:

jsonObject.toString();

And write it back to the file.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...