Kā pārveidot API atbildes uz Excel ziņojumiem C#

Mūsdienu datu pasaulē uzņēmumi lielā mērā paļaujas uz REST API datu apmaiņai. Tomēr daudzi ieinteresētie partneri dod priekšroku šo datu patēriņam Excel formātā analīzei un ziņošanai. Šis ceļvedis parāda, kā izveidot pilnīgu C# pieteikumu, kas:

Apvienojies ar pārējiem APIs
Atgriež JSON atbildes datus
Konvertē datus profesionāli formatētos Excel ziņojumos
Pievienojiet vizualizāciju ar grafiku un tabulu

Biznesa vērtība

Šis risinājums dod ievērojamu vērtību:

Automatizēt manuālo datu ekstrakcijas un ziņojumu veidošanas procesus
Datu precizitātes nodrošināšana, novēršot manuālo kopēšanu
Nodrošināt konsekventu ziņojuma formatēšanu
Nodrošināt plānotās ziņojumu ģenerāciju

Step-by-step īstenošanas ceļvedis

1. solis: izveidot jaunu C# pieteikumu

Sāciet, izveidojot jaunu konsoles lietojumprogrammu:

dotnet new console -n ApiToExcelReporter
cd ApiToExcelReporter

2. solis: nepieciešamo iepakojumu uzstādīšana

Pievienojiet nepieciešamos NuGet iepakojumus:

dotnet add package Aspose.Cells
dotnet add package Newtonsoft.Json
dotnet add package RestSharp

3. solis: REST API klientu ieviešana

Izveidojiet API komunikācijas pakalpojumu:

using RestSharp;
using Newtonsoft.Json;
using System;
using System.Threading.Tasks;

public class ApiService
{
    private readonly RestClient _client;
    
    public ApiService(string baseUrl)
    {
        _client = new RestClient(baseUrl);
    }
    
    public async Task<T> GetApiDataAsync<T>(string endpoint, string apiKey = null)
    {
        var request = new RestRequest(endpoint, Method.Get);
        
        // Add authentication if needed
        if (!string.IsNullOrEmpty(apiKey))
        {
            request.AddHeader("Authorization", $"Bearer {apiKey}");
        }
        
        var response = await _client.ExecuteAsync(request);
        
        if (response.IsSuccessful)
        {
            return JsonConvert.DeserializeObject<T>(response.Content);
        }
        
        throw new Exception($"API call failed: {response.ErrorMessage}");
    }
}

4. solis: JSON atbildes dati

Pievienojiet klases, lai apstrādātu JSON datus:

using Newtonsoft.Json.Linq;
using System.Collections.Generic;

public class DataProcessor
{
    public List<Dictionary<string, object>> FlattenJsonData(string jsonData)
    {
        var results = new List<Dictionary<string, object>>();
        JToken token = JToken.Parse(jsonData);
        
        // Handle different JSON structures
        if (token is JArray array)
        {
            foreach (var item in array)
            {
                results.Add(FlattenObject(item));
            }
        }
        else if (token is JObject obj)
        {
            // For nested data like {"data": [{...}, {...}]}
            var dataToken = obj["data"] as JArray;
            if (dataToken != null)
            {
                foreach (var item in dataToken)
                {
                    results.Add(FlattenObject(item));
                }
            }
            else
            {
                results.Add(FlattenObject(obj));
            }
        }
        
        return results;
    }
    
    private Dictionary<string, object> FlattenObject(JToken token)
    {
        var result = new Dictionary<string, object>();
        FillDictionary(result, token, "");
        return result;
    }
    
    private void FillDictionary(Dictionary<string, object> dict, JToken token, string prefix)
    {
        switch (token.Type)
        {
            case JTokenType.Object:
                foreach (var prop in token.Children<JProperty>())
                {
                    FillDictionary(dict, prop.Value, 
                        string.IsNullOrEmpty(prefix) ? prop.Name : $"{prefix}.{prop.Name}");
                }
                break;
                
            case JTokenType.Array:
                int index = 0;
                foreach (var item in token.Children())
                {
                    FillDictionary(dict, item, $"{prefix}[{index}]");
                    index++;
                }
                break;
                
            default:
                dict[prefix] = ((JValue)token).Value;
                break;
        }
    }
}

5. solis: Konvertēt uz Excel ar Aspose.Cells

Izveidojiet Excel konversiju:

using Aspose.Cells;
using Aspose.Cells.Utility;
using System;
using System.Collections.Generic;
using System.IO;

public class ExcelReportGenerator
{
    public void GenerateReport(string jsonData, string outputPath)
    {
        // Create a new workbook
        Workbook workbook = new Workbook();
        Worksheet sheet = workbook.Worksheets[0];
        
        // Configure JSON layout options
        JsonLayoutOptions options = new JsonLayoutOptions
        {
            ArrayAsTable = true,
            ConvertNumericOrDate = true,
            IgnoreNull = true
        };
        
        // Make headers bold
        options.TitleStyle = new CellsFactory().CreateStyle();
        options.TitleStyle.Font.IsBold = true;
        
        // Import JSON data
        JsonUtility.ImportData(jsonData, sheet.Cells, 0, 0, options);
        
        // Auto-fit columns
        sheet.AutoFitColumns();
        
        // Save the workbook
        workbook.Save(outputPath);
    }
    
    public void GenerateReportFromObjects(List<Dictionary<string, object>> data, string outputPath)
    {
        Workbook workbook = new Workbook();
        Worksheet sheet = workbook.Worksheets[0];
        
        // Add headers if there's data
        if (data.Count > 0)
        {
            int col = 0;
            foreach (var key in data[0].Keys)
            {
                // Add header with styling
                Cell cell = sheet.Cells[0, col];
                cell.PutValue(key);
                
                Style style = cell.GetStyle();
                style.Font.IsBold = true;
                cell.SetStyle(style);
                
                col++;
            }
            
            // Add data rows
            for (int row = 0; row < data.Count; row++)
            {
                col = 0;
                foreach (var value in data[row].Values)
                {
                    sheet.Cells[row + 1, col].PutValue(value);
                    col++;
                }
            }
        }
        
        // Format as a table
        if (data.Count > 0)
        {
            int lastRow = data.Count;
            int lastCol = data[0].Count - 1;
            
            var tableRange = sheet.Cells.CreateRange(0, 0, lastRow + 1, lastCol + 1);
            sheet.ListObjects.Add(tableRange, "DataTable");
        }
        
        // Auto-fit columns
        sheet.AutoFitColumns();
        
        // Save the workbook
        workbook.Save(outputPath);
    }
}

6. solis: Pievienojiet profesionālu formātu

Uzlabot Excel iznākumu ar profesionālu stilizāciju:

public void ApplyProfessionalFormatting(Workbook workbook)
{
    Worksheet sheet = workbook.Worksheets[0];
    
    // Create a style for the title
    Style titleStyle = workbook.CreateStyle();
    titleStyle.Font.Size = 14;
    titleStyle.Font.IsBold = true;
    titleStyle.HorizontalAlignment = TextAlignmentType.Center;
    
    // Add a title to the report
    sheet.Cells.Merge(0, 0, 1, sheet.Cells.MaxColumn + 1);
    Cell titleCell = sheet.Cells[0, 0];
    titleCell.PutValue("API Data Report - " + DateTime.Now.ToString("yyyy-MM-dd"));
    titleCell.SetStyle(titleStyle);
    
    // Insert a blank row after the title
    sheet.Cells.InsertRow(1);
    
    // Apply alternating row colors to the data
    Style evenRowStyle = workbook.CreateStyle();
    evenRowStyle.ForegroundColor = Color.FromArgb(240, 240, 240);
    evenRowStyle.Pattern = BackgroundType.Solid;
    
    int dataStartRow = 3; // Accounting for title and blank row
    int lastRow = sheet.Cells.MaxRow;
    
    for (int row = dataStartRow; row <= lastRow; row += 2)
    {
        for (int col = 0; col <= sheet.Cells.MaxColumn; col++)
        {
            sheet.Cells[row, col].SetStyle(evenRowStyle);
        }
    }
    
    // Add page header and footer
    sheet.PageSetup.SetHeader(1, "&\"Arial,Bold\"&14API Report");
    sheet.PageSetup.SetFooter(1, "Page &P of &N");
    
    // Set print options
    sheet.PageSetup.Orientation = PageOrientationType.Landscape;
    sheet.PageSetup.FitToPagesWide = 1;
    sheet.PageSetup.TopMargin = 0.5;
    sheet.PageSetup.LeftMargin = 0.5;
    sheet.PageSetup.RightMargin = 0.5;
    sheet.PageSetup.BottomMargin = 0.5;
}

7. solis: pievienojiet datu vizualizāciju

Izmēģiniet ziņojumu ar grafiku:

public void AddChartVisualization(Workbook workbook, int dataColumn)
{
    Worksheet sheet = workbook.Worksheets[0];
    Worksheet chartSheet = workbook.Worksheets.Add("Chart Analysis");
    
    // Get the data range (skip header row)
    int lastRow = sheet.Cells.MaxRow;
    int nameColumn = 0; // Assuming first column has names/categories
    
    // Add a chart
    int chartIndex = chartSheet.Charts.Add(ChartType.Column, 2, 2, 20, 10);
    Chart chart = chartSheet.Charts[chartIndex];
    
    // Set the data range for the chart
    chart.NSeries.Add($"Sheet1!B2:B{lastRow + 1}", true);
    chart.NSeries.CategoryData = $"Sheet1!A2:A{lastRow + 1}";
    
    // Set chart title and other properties
    chart.Title.Text = "Data Analysis";
    chart.Legend.Position = LegendPositionType.Bottom;
    
    // Additional chart customization
    chart.NSeries[0].Area.ForegroundColor = Color.FromArgb(79, 129, 189);
    chart.PlotArea.Area.ForegroundColor = Color.White;
    
    // Add data labels
    chart.NSeries[0].DataLabels.IsValueShown = true;
    chart.NSeries[0].DataLabels.Position = DataLabelPositionType.OutsideEnd;
}

8. solis: Ievietojiet to visu kopā

Izveidojiet galveno programmu, kas savieno visu kopā:

using System;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        try
        {
            // Configure API endpoint
            string baseUrl = "https://api.example.com";
            string endpoint = "/data/endpoint";
            string apiKey = "your-api-key"; // If needed
            
            // Connect to API and get data
            Console.WriteLine("Connecting to API...");
            var apiService = new ApiService(baseUrl);
            var jsonData = await apiService.GetApiDataAsync<string>(endpoint, apiKey);
            
            Console.WriteLine("Data retrieved successfully");
            
            // Generate Excel report
            Console.WriteLine("Generating Excel report...");
            var reportGenerator = new ExcelReportGenerator();
            
            // Option 1: Direct JSON to Excel conversion
            string outputPath = "ApiReport_" + DateTime.Now.ToString("yyyyMMdd_HHmmss") + ".xlsx";
            reportGenerator.GenerateReport(jsonData, outputPath);
            
            // Option 2: Process JSON and create enhanced report
            // var processor = new DataProcessor();
            // var processedData = processor.FlattenJsonData(jsonData);
            // reportGenerator.GenerateReportFromObjects(processedData, outputPath);
            
            Console.WriteLine($"Report saved to {outputPath}");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error: {ex.Message}");
        }
    }
}

Attiecībā uz dažādiem API atbildes struktūrām

REST APIs atgriežas datus dažādos formātos. šeit ir, kā tikt galā ar kopīgām struktūrām:

1. objektu klāsts

[
  { "id": 1, "name": "Product A", "price": 29.99 },
  { "id": 2, "name": "Product B", "price": 49.99 }
]

Šai struktūrai izmantojiet:

JsonLayoutOptions options = new JsonLayoutOptions();
options.ArrayAsTable = true;
JsonUtility.ImportData(jsonData, sheet.Cells, 0, 0, options);

2.Nested objekts ar datu izkārnījumu

{
  "status": "success",
  "data": [
    { "id": 1, "name": "Product A", "price": 29.99 },
    { "id": 2, "name": "Product B", "price": 49.99 }
  ]
}

Izmantojiet datu apstrādātāja klases, lai iegūtu “datu” rindas vai:

// Parse with Newtonsoft.Json
JObject jsonObj = JObject.Parse(jsonData);
JArray dataArray = (JArray)jsonObj["data"];

// Convert to string and import
string dataArrayJson = dataArray.ToString();
JsonUtility.ImportData(dataArrayJson, sheet.Cells, 0, 0, options);

3.Nested arrays un objekti

{
  "categories": [
    {
      "name": "Electronics",
      "products": [
        { "id": 1, "name": "Laptop", "price": 999.99 },
        { "id": 2, "name": "Phone", "price": 699.99 }
      ]
    },
    {
      "name": "Books",
      "products": [
        { "id": 3, "name": "Novel", "price": 14.99 }
      ]
    }
  ]
}

Attiecībā uz sarežģītām struktūrām, izveidojiet vairākas darba lapas:

// Parse the JSON
JObject root = JObject.Parse(jsonData);
JArray categories = (JArray)root["categories"];

// Create a worksheet for each category
foreach (var category in categories)
{
    string categoryName = category["name"].ToString();
    Worksheet sheet = workbook.Worksheets.Add(categoryName);
    
    // Get and import the products array
    JArray products = (JArray)category["products"];
    JsonUtility.ImportData(products.ToString(), sheet.Cells, 0, 0, options);
}

Ievadiet to uz nākamo līmeni: plānotie ziņojumi

Lai automātiski izveidotu ziņojumu, pievienojiet plānošanas iespējas:

// Install Task Scheduler package
// dotnet add package TaskScheduler

using Microsoft.Win32.TaskScheduler;

public void ScheduleDailyReportGeneration(string appPath)
{
    using (TaskService ts = new TaskService())
    {
        // Create a new task
        TaskDefinition td = ts.NewTask();
        td.RegistrationInfo.Description = "Daily API Data Report Generation";
        
        // Create a trigger that will fire daily at 7am
        td.Triggers.Add(new DailyTrigger { StartBoundary = DateTime.Today.AddHours(7) });
        
        // Create an action that will run the application
        td.Actions.Add(new ExecAction(appPath));
        
        // Register the task in the root folder
        ts.RootFolder.RegisterTaskDefinition("DailyApiReport", td);
    }
}

Augstākās iezīmes, kas jāapsver

Email piegāde - automātiski nosūtīt ziņojumus pa e-pastu
Multi-API integrācija - Datu kombinācija no vairākiem API
Template-based ziņojumi - Izmantojiet Excel veidnes konsekventu zīmējumu
Dashboard izveide - Izveidojiet interaktīvus Excel dashboards
Noteikumi un kļūdu izsekošana un ziņošana - Log problēmas un pārskats par panākumiem / neveiksmi

Izmantojot šo vadlīniju, jūs esat izveidojis spēcīgu C# pieteikumu, kas automatizē API datu iegūšanas procesu un to konvertē profesionālajos Excel ziņojumos – ietaupot laiku, nodrošinot precizitāti un sniedzot biznesa vērtību.