我正在连接到一个网络API并要求回复，但我的回复显示不正确，如“高”：4.166e-5当我期待像0.00004166这样的数字我要求的数字是BTC的市场价格，我认为这是一个32位整数问题，但它是一个字符串所以我失去了。对不起，如果我不是很好解释。
这是我正在阅读的回复：
package com.dartsapp.niall.darts_calculator_cs2048;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class DatabaseHelper extends SQLiteOpenHelper {
private static final String database_name = "finishes.db";
private static final String table_name = "finishes_table";
//private static final String column1 = "score";
//private static final String column2 = "finish";
private static DatabaseHelper sInstance = null;
public static DatabaseHelper getInstance(Context context) {
if (sInstance == null) {
sInstance = new DatabaseHelper(context.getApplicationContext());
}
return sInstance;
}
private DatabaseHelper(Context context) {
super(context, database_name, null, 1);
//SQLiteDatabase db = this.getWritableDatabase();
//db.close();
}
public Cursor getData(int playerScore) {
SQLiteDatabase db = this.getWritableDatabase();
Cursor res = db.rawQuery("select FINISH from "+table_name+" where SCORE = "+ playerScore,null);
res.close();
db.close();
return res;
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE IF NOT EXISTS "+table_name+ "(SCORE INTEGER, FINISH INTEGER)");
String finish2 =
"INSERT or replace INTO tbl_Contain (SCORE, FINISH) VALUES('2','D1')" ;
db.execSQL(finish2);
// LONG list of INSERTs - OMITTED
String finish170 =
"INSERT or replace INTO tbl_Contain (SCORE, FINISH) VALUES('170', 'T20 T20 BULL')" ;
db.execSQL(finish170);
db.close();
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + table_name);
onCreate(db);
db.close();
}
}
这是我如何格式化httpresponse
`{"date":1493626200,"high":4.166e-5,"low":4.158e-5,"open":4.166e-5,"close":4.158e-5,"volume":0.05681982,"quoteVolume":1364.65936831,"weightedAverage":4.163e-5}]
然后使用此
进行反序列化` Dim response As HttpResponseMessage = client.PostAsync(privUrl, myContent).Result
If response.IsSuccessStatusCode Then
Dim json As String = response.Content.ReadAsStringAsync().Result
Return json
End If
EDIT ***
现在我使用EuX0示例仍然出错 无法将当前JSON数组（例如[1,2,3]）反序列化为类型'class_test.FormatOutputData'，因为该类型需要JSON对象
Dim json As String = JsonConvert.DeserializeObject(responseFromServer).ToString()
这是整个JSON输出Dim responseFromServer As String = apiSettings.TradingApi("returnTradeHistory¤cyPair=BTC_XRP")
TextBox1.AppendText(responseFromServer) 'so i can see whats coming in
Dim jsonString As String = responseFromServer
**Dim obj As FormatOutputData = JsonConvert.DeserializeObject(Of FormatOutputData)(jsonString)**
obj.outputValues()
答案 0 :(得分：0)
Imports Newtonsoft.Json
Module Module1
Sub Main()
Dim jsonString As String = My.Computer.FileSystem.ReadAllText("C:\1.txt")
Console.WriteLine(String.Format("jsonString: {0}{1}", jsonString, vbNewLine))
Dim objarray As New List(Of FormatOutputData)
objarray.AddRange(JsonConvert.DeserializeObject(Of FormatOutputData())(jsonString))
For Each item As FormatOutputData In objarray
item.outputValues()
Next
Console.ReadLine()
End Sub
Private Class FormatOutputData
Public globalTradeID As Long
Public tradeID As Long
Public [date] As String
Public rate As Decimal
Public amount As Decimal
Public total As Decimal
Public fee As Decimal
Public orderNumber As String
Public type As String
Public category As String
Public Sub outputValues()
Console.WriteLine(String.Format("globalTradeID: {1}{0}tradeID: {2}{0}date: {3}{0}rate: {4}{0}amount: {5}{0}total: {6}{0}fee: {7}{0}orderNumber: {8}{0}type: {9}{0}category: {10}{0}",
vbNewLine, globalTradeID, tradeID, [date], rate, amount, total, fee, orderNumber, type, category))
End Sub
End Class
End Module
输出示例：
jsonString: [{"globalTradeID":116229026,"tradeID":"4728521","date":"2017-05-01 11:21:43","rate":"0.00004113","amount":"6118.34548991","total":"0.25164754","fee":"0.00150000","orderNumber":"40272934869","type":"buy","category":"exchange"},{"globalTradeID":116227160,"tradeID":"4728350","date":"2017-05-01 11:17:51","rate":"0.00004115","amount":"4.08198005","total":"0.00016797","fee":"0.00250000","orderNumber":"40271626179","type":"buy","category":"settlement"},{"globalTradeID":116227159,"tradeID":"4728349","date":"2017-05-01 11:17:51","rate":"0.00004115","amount":"998.42429344","total":"0.04108515","fee":"0.00250000","orderNumber":"40271625180","type":"buy","category":"marginTrade"},{"globalTradeID":116226661,"tradeID":"4728312","date":"2017-05-01 11:16:50","rate":"0.00004125","amount":"1000.00000000","total":"0.04125000","fee":"0.00150000","orderNumber":"40271087718","type":"sell","category":"marginTrade"},{"globalTradeID":116207504,"tradeID":"4726343","date":"2017-05-01 10:44:17","rate":"0.00004169","amount":"6046.78987712","total":"0.25209066","fee":"0.00150000","orderNumber":"40258966851","type":"sell","category":"exchange"},{"globalTradeID":116165595,"tradeID":"4721962","date":"2017-05-01 09:19:29","rate":"0.00004083","amount":"5908.02441914","total":"0.24122463","fee":"0.00150000","orderNumber":"40228860987","type":"buy","category":"exchange"},{"globalTradeID":116165589,"tradeID":"4721961","date":"2017-05-01 09:19:29","rate":"0.00004083","amount":"3.77406151","total":"0.00015409","fee":"0.00150000","orderNumber":"40228860987","type":"buy","category":"exchange"},{"globalTradeID":116165569,"tradeID":"4721960","date":"2017-05-01 09:19:28","rate":"0.00004083","amount":"144.21964328","total":"0.00588848","fee":"0.00250000","orderNumber":"40228860987","type":"buy","category":"exchange"},{"globalTradeID":115826811,"tradeID":"4679609","date":"2017-04-30 23:10:36","rate":"0.00003810","amount":"153.45158215","total":"0.00584650","fee":"0.00250000","orderNumber":"40019069988","type":"sell","category":"exchange"},{"globalTradeID":115826810,"tradeID":"4679608","date":"2017-04-30 23:10:36","rate":"0.00003810","amount":"262.48126299","total":"0.01000053","fee":"0.00250000","orderNumber":"40019069988","type":"sell","category":"exchange"},{"globalTradeID":115826809,"tradeID":"4679607","date":"2017-04-30 23:10:36","rate":"0.00003810","amount":"5253.48043078","total":"0.20015760","fee":"0.00250000","orderNumber":"40019069988","type":"sell","category":"exchange"},{"globalTradeID":115826808,"tradeID":"4679606","date":"2017-04-30 23:10:36","rate":"0.00003810","amount":"836.80554752","total":"0.03188229","fee":"0.00250000","orderNumber":"40019069988","type":"sell","category":"exchange"}]
globalTradeID: 116229026
tradeID: 4728521
date: 2017-05-01 11:21:43
rate: 0,00004113
amount: 6118,34548991
total: 0,25164754
fee: 0,00150000
orderNumber: 40272934869
type: buy
category: exchange
globalTradeID: 116227160
tradeID: 4728350
date: 2017-05-01 11:17:51
rate: 0,00004115
amount: 4,08198005
total: 0,00016797
fee: 0,00250000
orderNumber: 40271626179
type: buy
category: settlement
EDIT2：
Sub Main()
Dim nestedJsonClass As NestedJson = JsonConvert.DeserializeObject(Of NestedJson)(jsonString)
Console.WriteLine(String.Format("Order number: {0}", nestedJsonClass.orderNumber))
Console.WriteLine(String.Format(" ->:amount: {0}", nestedJsonClass.resultingTrades.Item(0).amount))
Console.WriteLine(String.Format(" ->:date: {0}", nestedJsonClass.resultingTrades.Item(0).Date))
End Sub
Private Class NestedJson
Public orderNumber As ULong
Public resultingTrades As New List(Of Nested)
End Class
Private Class Nested
Public amount As Decimal
Public [Date] As String
Public rate As Decimal
Public total As Decimal
Public tradeID As Long
Public type As String
End Class
EDIT3：
Sub Main()
Dim jsonInput As String = My.Computer.FileSystem.ReadAllText("C:\1.txt")
Dim whatEver As topLevelObject = JsonConvert.DeserializeObject(Of topLevelObject)(jsonInput)
Console.WriteLine(whatEver.asks(0)(0))
Console.WriteLine(whatEver.asks(0)(1))
Console.ReadLine()
End Sub
Public Class topLevelObject
Public asks() As List(Of Object)
Public bids() As List(Of Object)
Public isFrozen As String
Public seq As Integer
End Class