python -m pip install requests -i https://pypi.tuna.tsinghua.edu.cn/simple

import requests
from datetime import datetime
import time

API_URL="http://localhost:55548/GetBooksList"

def get_books(count:int):
    try:
        params={"cnt":count}
        response=requests.get(API_URL,params=params)
        response.raise_for_status()
        books=response.json()
        print(f'{datetime.now()},retrieve {len(books)} books')
        return books
    
    except requests.exceptions.RequestException as ex:
        print(f'{datetime.now()},ex:{ex}')
        return None
    
if __name__=='__main__':
    while True:
        books_list=get_books(10)
        if books_list:
            for a in books_list:
                print(a)
        time.sleep(5)

2026-05-12 14:03:53.072911,retrieve 10 books
{'Id': 571, 'Author': 'Author_571', 'Abstract': 'Abstract_571', 'Name': 'Name_571', 'ISBN': 'ISBN_571', 'Title': 'Title_571', 'Topic': 'Topic_571', 'Comment': 'Comment_571', 'Content': 'Content_571', 'Summary': 'Summary_571'}
{'Id': 572, 'Author': 'Author_572', 'Abstract': 'Abstract_572', 'Name': 'Name_572', 'ISBN': 'ISBN_572', 'Title': 'Title_572', 'Topic': 'Topic_572', 'Comment': 'Comment_572', 'Content': 'Content_572', 'Summary': 'Summary_572'}
{'Id': 573, 'Author': 'Author_573', 'Abstract': 'Abstract_573', 'Name': 'Name_573', 'ISBN': 'ISBN_573', 'Title': 'Title_573', 'Topic': 'Topic_573', 'Comment': 'Comment_573', 'Content': 'Content_573', 'Summary': 'Summary_573'}
{'Id': 574, 'Author': 'Author_574', 'Abstract': 'Abstract_574', 'Name': 'Name_574', 'ISBN': 'ISBN_574', 'Title': 'Title_574', 'Topic': 'Topic_574', 'Comment': 'Comment_574', 'Content': 'Content_574', 'Summary': 'Summary_574'}
{'Id': 575, 'Author': 'Author_575', 'Abstract': 'Abstract_575', 'Name': 'Name_575', 'ISBN': 'ISBN_575', 'Title': 'Title_575', 'Topic': 'Topic_575', 'Comment': 'Comment_575', 'Content': 'Content_575', 'Summary': 'Summary_575'}
{'Id': 576, 'Author': 'Author_576', 'Abstract': 'Abstract_576', 'Name': 'Name_576', 'ISBN': 'ISBN_576', 'Title': 'Title_576', 'Topic': 'Topic_576', 'Comment': 'Comment_576', 'Content': 'Content_576', 'Summary': 'Summary_576'}
{'Id': 577, 'Author': 'Author_577', 'Abstract': 'Abstract_577', 'Name': 'Name_577', 'ISBN': 'ISBN_577', 'Title': 'Title_577', 'Topic': 'Topic_577', 'Comment': 'Comment_577', 'Content': 'Content_577', 'Summary': 'Summary_577'}
{'Id': 578, 'Author': 'Author_578', 'Abstract': 'Abstract_578', 'Name': 'Name_578', 'ISBN': 'ISBN_578', 'Title': 'Title_578', 'Topic': 'Topic_578', 'Comment': 'Comment_578', 'Content': 'Content_578', 'Summary': 'Summary_578'}
{'Id': 579, 'Author': 'Author_579', 'Abstract': 'Abstract_579', 'Name': 'Name_579', 'ISBN': 'ISBN_579', 'Title': 'Title_579', 'Topic': 'Topic_579', 'Comment': 'Comment_579', 'Content': 'Content_579', 'Summary': 'Summary_579'}
{'Id': 580, 'Author': 'Author_580', 'Abstract': 'Abstract_580', 'Name': 'Name_580', 'ISBN': 'ISBN_580', 'Title': 'Title_580', 'Topic': 'Topic_580', 'Comment': 'Comment_580', 'Content': 'Content_580', 'Summary': 'Summary_580'}
2026-05-12 14:03:58.083683,retrieve 10 books
{'Id': 581, 'Author': 'Author_581', 'Abstract': 'Abstract_581', 'Name': 'Name_581', 'ISBN': 'ISBN_581', 'Title': 'Title_581', 'Topic': 'Topic_581', 'Comment': 'Comment_581', 'Content': 'Content_581', 'Summary': 'Summary_581'}
{'Id': 582, 'Author': 'Author_582', 'Abstract': 'Abstract_582', 'Name': 'Name_582', 'ISBN': 'ISBN_582', 'Title': 'Title_582', 'Topic': 'Topic_582', 'Comment': 'Comment_582', 'Content': 'Content_582', 'Summary': 'Summary_582'}
{'Id': 583, 'Author': 'Author_583', 'Abstract': 'Abstract_583', 'Name': 'Name_583', 'ISBN': 'ISBN_583', 'Title': 'Title_583', 'Topic': 'Topic_583', 'Comment': 'Comment_583', 'Content': 'Content_583', 'Summary': 'Summary_583'}
{'Id': 584, 'Author': 'Author_584', 'Abstract': 'Abstract_584', 'Name': 'Name_584', 'ISBN': 'ISBN_584', 'Title': 'Title_584', 'Topic': 'Topic_584', 'Comment': 'Comment_584', 'Content': 'Content_584', 'Summary': 'Summary_584'}
{'Id': 585, 'Author': 'Author_585', 'Abstract': 'Abstract_585', 'Name': 'Name_585', 'ISBN': 'ISBN_585', 'Title': 'Title_585', 'Topic': 'Topic_585', 'Comment': 'Comment_585', 'Content': 'Content_585', 'Summary': 'Summary_585'}
{'Id': 586, 'Author': 'Author_586', 'Abstract': 'Abstract_586', 'Name': 'Name_586', 'ISBN': 'ISBN_586', 'Title': 'Title_586', 'Topic': 'Topic_586', 'Comment': 'Comment_586', 'Content': 'Content_586', 'Summary': 'Summary_586'}
{'Id': 587, 'Author': 'Author_587', 'Abstract': 'Abstract_587', 'Name': 'Name_587', 'ISBN': 'ISBN_587', 'Title': 'Title_587', 'Topic': 'Topic_587', 'Comment': 'Comment_587', 'Content': 'Content_587', 'Summary': 'Summary_587'}
{'Id': 588, 'Author': 'Author_588', 'Abstract': 'Abstract_588', 'Name': 'Name_588', 'ISBN': 'ISBN_588', 'Title': 'Title_588', 'Topic': 'Topic_588', 'Comment': 'Comment_588', 'Content': 'Content_588', 'Summary': 'Summary_588'}
{'Id': 589, 'Author': 'Author_589', 'Abstract': 'Abstract_589', 'Name': 'Name_589', 'ISBN': 'ISBN_589', 'Title': 'Title_589', 'Topic': 'Topic_589', 'Comment': 'Comment_589', 'Content': 'Content_589', 'Summary': 'Summary_589'}
{'Id': 590, 'Author': 'Author_590', 'Abstract': 'Abstract_590', 'Name': 'Name_590', 'ISBN': 'ISBN_590', 'Title': 'Title_590', 'Topic': 'Topic_590', 'Comment': 'Comment_590', 'Content': 'Content_590', 'Summary': 'Summary_590'}
2026-05-12 14:04:03.097868,retrieve 10 books
{'Id': 591, 'Author': 'Author_591', 'Abstract': 'Abstract_591', 'Name': 'Name_591', 'ISBN': 'ISBN_591', 'Title': 'Title_591', 'Topic': 'Topic_591', 'Comment': 'Comment_591', 'Content': 'Content_591', 'Summary': 'Summary_591'}
{'Id': 592, 'Author': 'Author_592', 'Abstract': 'Abstract_592', 'Name': 'Name_592', 'ISBN': 'ISBN_592', 'Title': 'Title_592', 'Topic': 'Topic_592', 'Comment': 'Comment_592', 'Content': 'Content_592', 'Summary': 'Summary_592'}
{'Id': 593, 'Author': 'Author_593', 'Abstract': 'Abstract_593', 'Name': 'Name_593', 'ISBN': 'ISBN_593', 'Title': 'Title_593', 'Topic': 'Topic_593', 'Comment': 'Comment_593', 'Content': 'Content_593', 'Summary': 'Summary_593'}
{'Id': 594, 'Author': 'Author_594', 'Abstract': 'Abstract_594', 'Name': 'Name_594', 'ISBN': 'ISBN_594', 'Title': 'Title_594', 'Topic': 'Topic_594', 'Comment': 'Comment_594', 'Content': 'Content_594', 'Summary': 'Summary_594'}
{'Id': 595, 'Author': 'Author_595', 'Abstract': 'Abstract_595', 'Name': 'Name_595', 'ISBN': 'ISBN_595', 'Title': 'Title_595', 'Topic': 'Topic_595', 'Comment': 'Comment_595', 'Content': 'Content_595', 'Summary': 'Summary_595'}
{'Id': 596, 'Author': 'Author_596', 'Abstract': 'Abstract_596', 'Name': 'Name_596', 'ISBN': 'ISBN_596', 'Title': 'Title_596', 'Topic': 'Topic_596', 'Comment': 'Comment_596', 'Content': 'Content_596', 'Summary': 'Summary_596'}
{'Id': 597, 'Author': 'Author_597', 'Abstract': 'Abstract_597', 'Name': 'Name_597', 'ISBN': 'ISBN_597', 'Title': 'Title_597', 'Topic': 'Topic_597', 'Comment': 'Comment_597', 'Content': 'Content_597', 'Summary': 'Summary_597'}
{'Id': 598, 'Author': 'Author_598', 'Abstract': 'Abstract_598', 'Name': 'Name_598', 'ISBN': 'ISBN_598', 'Title': 'Title_598', 'Topic': 'Topic_598', 'Comment': 'Comment_598', 'Content': 'Content_598', 'Summary': 'Summary_598'}
{'Id': 599, 'Author': 'Author_599', 'Abstract': 'Abstract_599', 'Name': 'Name_599', 'ISBN': 'ISBN_599', 'Title': 'Title_599', 'Topic': 'Topic_599', 'Comment': 'Comment_599', 'Content': 'Content_599', 'Summary': 'Summary_599'}
{'Id': 600, 'Author': 'Author_600', 'Abstract': 'Abstract_600', 'Name': 'Name_600', 'ISBN': 'ISBN_600', 'Title': 'Title_600', 'Topic': 'Topic_600', 'Comment': 'Comment_600', 'Content': 'Content_600', 'Summary': 'Summary_600'}
2026-05-12 14:04:08.110344,retrieve 10 books
{'Id': 601, 'Author': 'Author_601', 'Abstract': 'Abstract_601', 'Name': 'Name_601', 'ISBN': 'ISBN_601', 'Title': 'Title_601', 'Topic': 'Topic_601', 'Comment': 'Comment_601', 'Content': 'Content_601', 'Summary': 'Summary_601'}
{'Id': 602, 'Author': 'Author_602', 'Abstract': 'Abstract_602', 'Name': 'Name_602', 'ISBN': 'ISBN_602', 'Title': 'Title_602', 'Topic': 'Topic_602', 'Comment': 'Comment_602', 'Content': 'Content_602', 'Summary': 'Summary_602'}
{'Id': 603, 'Author': 'Author_603', 'Abstract': 'Abstract_603', 'Name': 'Name_603', 'ISBN': 'ISBN_603', 'Title': 'Title_603', 'Topic': 'Topic_603', 'Comment': 'Comment_603', 'Content': 'Content_603', 'Summary': 'Summary_603'}
{'Id': 604, 'Author': 'Author_604', 'Abstract': 'Abstract_604', 'Name': 'Name_604', 'ISBN': 'ISBN_604', 'Title': 'Title_604', 'Topic': 'Topic_604', 'Comment': 'Comment_604', 'Content': 'Content_604', 'Summary': 'Summary_604'}
{'Id': 605, 'Author': 'Author_605', 'Abstract': 'Abstract_605', 'Name': 'Name_605', 'ISBN': 'ISBN_605', 'Title': 'Title_605', 'Topic': 'Topic_605', 'Comment': 'Comment_605', 'Content': 'Content_605', 'Summary': 'Summary_605'}
{'Id': 606, 'Author': 'Author_606', 'Abstract': 'Abstract_606', 'Name': 'Name_606', 'ISBN': 'ISBN_606', 'Title': 'Title_606', 'Topic': 'Topic_606', 'Comment': 'Comment_606', 'Content': 'Content_606', 'Summary': 'Summary_606'}
{'Id': 607, 'Author': 'Author_607', 'Abstract': 'Abstract_607', 'Name': 'Name_607', 'ISBN': 'ISBN_607', 'Title': 'Title_607', 'Topic': 'Topic_607', 'Comment': 'Comment_607', 'Content': 'Content_607', 'Summary': 'Summary_607'}
{'Id': 608, 'Author': 'Author_608', 'Abstract': 'Abstract_608', 'Name': 'Name_608', 'ISBN': 'ISBN_608', 'Title': 'Title_608', 'Topic': 'Topic_608', 'Comment': 'Comment_608', 'Content': 'Content_608', 'Summary': 'Summary_608'}
{'Id': 609, 'Author': 'Author_609', 'Abstract': 'Abstract_609', 'Name': 'Name_609', 'ISBN': 'ISBN_609', 'Title': 'Title_609', 'Topic': 'Topic_609', 'Comment': 'Comment_609', 'Content': 'Content_609', 'Summary': 'Summary_609'}
{'Id': 610, 'Author': 'Author_610', 'Abstract': 'Abstract_610', 'Name': 'Name_610', 'ISBN': 'ISBN_610', 'Title': 'Title_610', 'Topic': 'Topic_610', 'Comment': 'Comment_610', 'Content': 'Content_610', 'Summary': 'Summary_610'}

//WCF
//D:\C\WcfService4\WcfService4\Web.config
<?xml version="1.0"?>
<configuration>
  <appSettings>
    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
  </appSettings>
  <system.web>
    <compilation debug="true" targetFramework="4.8" />
    <httpRuntime targetFramework="4.8" maxRequestLength="2147483647"/>
  </system.web>
  <system.serviceModel>
      <services>
          <service name="WcfService4.BookService">
              <endpoint address=""
                        binding="webHttpBinding"
                        bindingConfiguration="WebHttpBinding_IBookSerive"
                        behaviorConfiguration="webBehavior_test"
                        contract="WcfService4.IBookService"/>
              <host>
                  <baseAddresses>
                      <add baseAddress="http://localhost:8080"/>
                  </baseAddresses>
              </host>
          </service>
      </services>

      <bindings>
          <webHttpBinding>
              <binding name="WebHttpBinding_IBookSerive"
                       maxBufferPoolSize="2147483647"
                       maxReceivedMessageSize="2147483647">
                  <readerQuotas
                      maxDepth="2147483647"
                      maxStringContentLength="2147483647"
                      maxArrayLength="2147483647"
                      maxBytesPerRead="2147483647"
                      maxNameTableCharCount="2147483647"/>
              </binding>
          </webHttpBinding>
      </bindings>
      
    <behaviors>
        <endpointBehaviors>
            <behavior name="webBehavior_test">
                <webHttp/>
            </behavior>
        </endpointBehaviors>
        
      <serviceBehaviors>
        <behavior>
          <!-- To avoid disclosing metadata information, set the values below to false before deployment -->
          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
      
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
  </system.serviceModel>

    <system.webServer>
        <modules runAllManagedModulesForAllRequests="true"/>
        <rewrite>
            <rules>
                <rule name="WCF Without SVC" stopProcessing="true">
                    <match url="^(.*)$"/>
                    <conditions logicalGrouping="MatchAll">
                        <add input="{REQUEST_FILENAME}" matchType="IsFile"
                             negate="true"/>
                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
                    </conditions>
                    <action type="Rewrite" url="BookService.svc/{R:1}"/>
                </rule>
            </rules>
        </rewrite>
        <directoryBrowse enabled="true"/>
    </system.webServer>
</configuration>


//D:\C\WcfService4\WcfService4\IBookService.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;

namespace WcfService4
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IBookService" in both code and config file together.
    [ServiceContract]
    public interface IBookService
    {
        [OperationContract]
        [WebGet(UriTemplate="GetBooksList?cnt={cnt}",RequestFormat =WebMessageFormat.Json, ResponseFormat =WebMessageFormat.Json)]
        List<Book> GetBooksList(int cnt);
    }


    [DataContract]
    public class Book
    {
        [DataMember(IsRequired = true,Order =1)]
        public long Id { get; set; }

        [DataMember(IsRequired = true, Order = 2)]
        public string Author { get; set; }

        [DataMember(IsRequired = true, Order = 3)]
        public string Abstract { get; set; }

        [DataMember(IsRequired = true, Order = 4)]
        public string Name { get; set; }

        [DataMember(IsRequired = true, Order = 5)]
        public string ISBN {  get; set; }

        [DataMember(IsRequired = true, Order = 6)]
        public string Title {  get; set; }

        [DataMember(IsRequired = true, Order = 7)]
        public string Topic {  get; set; }

        [DataMember(IsRequired =true, Order = 8)]
        public string Comment { get; set;  }

        [DataMember(IsRequired =true,Order = 9)]
        public string Content { get; set; }

        [DataMember(IsRequired =true,Order =10)]
        public string Summary {  get; set; }
    }
}


//D:\C\WcfService4\WcfService4\BookService.svc.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using System.Threading;

namespace WcfService4
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "BookService" in code, svc and config file together.
    // NOTE: In order to launch WCF Test Client for testing this service, please select BookService.svc or BookService.svc.cs at the Solution Explorer and start debugging.
    public class BookService : IBookService
    {
        private static long idx = 0;
        private long GetIncrementIdx()
        {
            return Interlocked.Increment(ref idx);
        }

        public List<Book> GetBooksList(int cnt)
        {
            List<Book> bksList = new List<Book>();
            for (int i = 0; i < cnt; i++)
            {
                long a = GetIncrementIdx();
                bksList.Add(new Book()
                {
                    Id = a,
                    Name = $"Name_{a}",
                    ISBN = $"ISBN_{a}",
                    Comment = $"Comment_{a}",
                    Content = $"Content_{a}",
                    Summary = $"Summary_{a}",
                    Author = $"Author_{a}",
                    Abstract = $"Abstract_{a}",
                    Title = $"Title_{a}",
                    Topic = $"Topic_{a}"
                });
            }
            return bksList;
        }
    }
}