I have a server response that has this format:
{"bankAccounts":[
{"id" :"wfasfsd",
"balance":{"amount":90, "currency":"GBP"}
}
]
I cant find out how to parse through it efficiently
For a similar response with of simpler format this post helped me (Extract JSONObject and iterate through HashMap field)
The picture shows exactly how the server response looks like. I need to extract this into JSON and in the end, I need to have a HashMap with keys id, amount, currency
You can use json-simple library to read and write json objects.
Here you can see how to use it.
Related
I saved a json into the database as a string like this:
"[_district:_1_2_5village, _name:_1_1_2id_inter, _gender:_1_3_5sex]"
Now i want to convert it back to a Json Object so as to pick the key and value eg _district is the key and _1_2_5village is the value. Any help on how i can achieve this. Thanks
I tried to convert the string back into JSON by parsing but that dint work for me.
It doesn't work because that's not a JSON format, a JSON is a way of mapping objects and uses key value syntax like so:
{"key": "value"}
and an array would look like this:
[{"key": "value"},{"key": "value"}]
You'll need to make a custom parser for your syntax
Here's the json specification:
https://www.json.org/json-en.html
I've got a big dump of DynamoJson e.g.
{"Item": {"id":{"N":"896"}, "name": {"S": "Tom"}}}
I want to parse this JSON and put it to my DynamoDB table...
I've tried:
import com.amazonaws.services.dynamodbv2.document.Item;
Item item = Item.fromJSON(BLOB);
But unfortunately its not smart enough to parse the DynamoDB Json format and doesn't deal with the inner types (S, N etc)... When I try to put I get errors like:
Type mismatch for key id expected: N actual: M
Related Questions:
AWS DynamoDB on Android: Inserting JSON Directly?
This does not work for the DynamoJson format.
Unmarshall DynamoDB JSON
This is exactly what I need but its in NodeJS
I am developing an app that communicates with Database, to retrieve values. I am using PHP for the Backend, and developing on Android Studio, using the Volley Library.
My problem is, the values that I need to send are multiple records of a table, each with four columns, for example name, age, department, and country. I am using JSON to encode these values, but I need help with how to proceed. Should I use JSON encoded 2D Arrays? if so, how to make use PHP to construct this array, as there can be variable numbers of rows.
Also, How to parse that JSON Object/Array in Android (Java)?
As of now, this is my progress:
JSON Output in browser:
{"name0":"ABC","age0":"25","department0":"Medical","country0":"XYZ","name1":"DEF","age1":"26","department1":"Engg.","country1":"XYZ"}
Here, I named each "key" of JSON using a Loop in PHP, and encoded as JSON Object. But Having Difficulty in displaying this in Android. I have used a XML layout with 4 textviews, and LISTVIEW in the main Activity XML File.
I would suggest a different json structure for encoding. Yours will get messy pretty quick if there are a lot of records. For example you would have name0, name1, ... nameN. It would be better to make an array like so:
[
{
"name" : "ABC",
"age" : 25,
"department" : "Medical",
"country" : "XYZ"
},
{
...
}
]
Notice that there are no indices concatenated to your keys. You can get the index based on the json object node's position in the array if you need it.
As for parsing it in Android, you can refer to the documentation. There is a Json parser that comes with the SDK so all you need to do is read in your string as a json array and iterate over its object nodes as needed.
For example
String jsonResponse = " ... "; // whatever the php backend gives you when you make a call to the endpoint
JSONArray arr = new JSONArray(jsonResponse);
for (int i=0; i<arr.length(); i++) {
JSONObject obj = arr.get(i);
String name = obj.getString("name");
...
}
We have a requirement of parsing xml data in java.
The xml data looks like this:
xml_data
1> The first question here is how to parse such data.I have tried the code suggested in this link :
xmlparse with Node
and have partial success. The only doubt here is how can i can to reach "" tag.
2>The second question is if the data is parsed how can we can store the values in single object,so that we can get length and values of "CRAWL", "Test", "Check"(Tables) separately(from single object)?
Please help me as how can we achieve this?
Abhi
I have written a java servlet to deal with http get request.I know ,the common format of get request is like this:http://IP_ADDRESS:8080/test?name="jack"&value="shit.
But now ,I have a list of values to transfer,such as an user id list[1,2,3,4].So ,my question is ,how should I write my http get request to express this?And in java servets doGet(),can I use request.getParameterValues to get such an array?
if you are using GET method your url should be looking like that :
http://IP_ADDRESS:8080/test?list=1&list=2&list=3
for retrieving it:
String[] arrlist=request.getParameterValues('list');
your array will be filled with separated values:
//["1","2","3"]
UPDATE : if to write it list[] or list?
when you retrieving your list parameters it wouldn't be parsed as array but as a series of String which will be grouped later on into an array.
Which means even if you write it list[]=1&list[]=2&list[]=3, list[=1&list[=2&list[=3, list*=1&list*=2&list*=3 or list=1&list=2&list=3 it would always be giving you the same answer whether you retrieve it as
request.getParameterValues('list[]') //["1","2","3"]
request.getParameterValues('list[') //["1","2","3"]
request.getParameterValues('list*') //["1","2","3"]
request.getParameterValues('list') //["1","2","3"]
While ,the http request format should be like this:localhost:8080/test?list[]=1&list[]=2&list[]=3
Maybe too simple, but what about repeat parameters name?
http://IP_ADDRESS:8080/test?userId=1&userId=2&userId=3