Double-layer nested json string (json object embedded json array) resolved to Map
I wrote an article on the layer that introduced the conversion between json and map, but only involved a single json object or
Previously, I wrote an article about JSON and map transformation, but only to a single JSON object or JSON array, JSON object nested inside this JSON array JSON string can not be proces
Double-layer nested json string (json object embedded json array) resolved to Map, jsonmap
I wrote an article on the layer that introduced the conversion between json and map, but only involved a single json object or
In the format of the complex JSON data, the JSON data is often nested, so that the value will be slightly more complex than the previous value, but as long as the idea is clear, in fact, the method is the same. Just like if Else statement, if the IF in the set if,if if, write the specification is OK, if the code format is not standardized, then we must also look
First, mobile phone to the Java background interface, sometimes due to the needs of the business needs to pass the data JSON array nested JSON array, background received after the need to deal with
Eg: front-end data structure:
front-end data structure: Linejson =[{"startprovince": "2", "Startcity": "2", "Carlist": [{"Carid": "1", "Telephone" : "15091060694
When you plan to fill out an Excel table, the conventions are filled in JSON format for complex types of data. For example, the content of column D is JSON data.The JSON in the cell is as follows.{ "name":"BeJson2", "URL":"http://www.bejson.com", "page": the, "Isnonprofit":true, "Address": { "Street":"Science Park Road.", " City":"Suz
Php concatenates and parses json using nested arrays to nest json
Concatenate a hybrid json-containing object array using nested Arrays
Php uses nested arrays to parse arrays of mixed json
JSON is a bit more complex than the general format, like arrays, there are multiple layers of nesting, studied, the record code is as follows:stringJsontext ="{' name ': ' Test ', ' phone ': ' 18888888888 ', ' image ': [{' Name ': ' Img1 ', ' data ': ' data1 '},{' name ': ' Img2 ', ' data ': ' Data2 ' },{' name ': ' Img3 ', ' data ': ' Data3 '}]}"; Jobject Jo=(Jobject) jsonconvert.deserializeobject (Jsontext); stringZone = jo["name"]. ToString (); st
that Mongovue does not support MONGODB3 versions of MongoDB Common commands: View Databases
> show dbs
using databases
> use database-name
view tables
> Show tables
query data
> db.table-name.find ({})
query criteria
> Db.table-name.find ({ ' name ':'zhangsan'}) Build an index > Db.table-name.ensureindex ({' Name ': 1}) 1 is ascending,-1 is descending Composite Index > db.table-name.ensureindex{{' name ': 1, ' Age ': 1} only query name
Boss
1
Man
Old 2
2
Woman
Old 3
3
Man
3. Storing JSON files
Json, all called JavaScript Object Notation, is the JavaScript objects tag, which represents data through the combination of objects and arrays, is simple to construct but highly structured, and is a lightweight data interchange format.
3.1 Conversio
',' RB ')F_csv=csv.reader (f)heading=Next(f_csv)Row=namedtuple (' Row ', heading)F_csv:Row=row (*row)Row.first,Row.second,row.thirdThis makes it much more intuitive to access them. The way you look at objects is a bit too complicated. Can you use a dictionary? It is also possible and the method is more concise. Here's how.f=Open(R ' E:\py_prj\test.csv ',' RB ')F_csv=csv. Dictreader (f)F_csv:row[' first ']The same write can also be used in
(Json.dumps (data)) "wants to save the JSON format, can add a parameter, Indentwith open (' Data.json ', ' W ') as F: F.write (Json.dumps ( data,indent=2)) " CSV file storageThe CSV full name is (comma-separated values), a comma-separated value or a character-delimited value, which stores tabular data in plain text, equivalent to structured plain text.It's mo
Summary:Recently, there is a small demand for projects, that is, the project development of the Division of documentation, facilitate the maintenance of later management. However, during development, the division of Labor was recorded in JSON format, so we did a download of JSON data in CSV format to local.
Code:
Copy Code code as follows:
Most of the time we see JSON data nested in multiple layers, like this:{"name":"Orange Mulberry", "Sex":"male", " Age": -,"Grade":{"Gname":"three years and eight classes", "Gdesc":"third day grade eight class" } }To get the JSON data of the above type, it is the following steps:1. Database queriesSql:select S.name,s.sex,s.age,g.gname,g.gdescFro
JSON has gradually become a mainstream data exchange format on the Internet due to its simple and convenient data structure.
Before discussing the JSON Conversion Method for Nested objects, let's look at the simple ruby JSON conversion.First, the ruby object is converted to a JSON
Because of its simple and convenient data structure, JSON has gradually become the data format of the mainstream data interchange on the Internet.
Before discussing the JSON conversion method for nested objects (Nested object), let's look at a simple ruby JSON transformatio
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