如何在c#中实现具有互操作性的WCF RESTful (JSON)服务的压缩?

Question

我有一个WCF RESTful(即JSON)服务，我正在c#中构建。其中一个DataContract方法可以返回一个非常大的响应，最小10 MB，最大可能超过30 MB。它都是文本，并将其作为JSON数据返回给客户端。当我在浏览器中测试这个方法时，我看到它超时了。我知道有一种方法可以压缩WCF RESTful服务响应数据。既然互操作性对我的目的来说是绝对关键的，那么是否仍然可以压缩WCF RESTful服务响应数据?现在，我还在本地机器上测试这个项目。但是，我将把它部署到IIS中。

如果有一种方法来压缩互操作性，这是如何做到的?

谢谢。

这实际上不是我正在使用的文件集，但它只是一个示例，用于展示我如何构建服务。我意识到这个样本根本不需要压缩。

IService1.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 "IService1" in both code and config file together.
    [ServiceContract]
    public interface IService1
    {
        [OperationContract]
        [WebInvoke(
            Method = "GET", 
            UriTemplate = "employees",
            RequestFormat = WebMessageFormat.Json,
            ResponseFormat = WebMessageFormat.Json,
            BodyStyle = WebMessageBodyStyle.Bare)]
        List<Employee> GetEmployees();
    }
    // Use a data contract as illustrated in the sample below to add composite types to service operations.
    [DataContract]
    public class Employee
    {
        [DataMember]
        public string FirstName { get; set; }
        [DataMember]
        public string LastName { get; set; }
        [DataMember]
        public int Age { get; set; }
        public Employee(string firstName, string lastName, int age)
        {
            this.FirstName = firstName;
            this.LastName = lastName;
            this.Age = age;
        }
    }
}

Service1.svc.cs:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;
using System.Net;
namespace WcfService4
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "Service1" in code, svc and config file together.
    public class Service1 : IService1
    {
        public List<Employee> GetEmployees()
        {
            // In reality, I'm calling the data from an external datasource, returning data to the client that exceeds 10 MB and can reach an upper limit of at least 30 MB.               
            List<Employee> employee = new List<Employee>();
            employee.Add(new Employee("John", "Smith", 28));
            employee.Add(new Employee("Jane", "Fonda", 42));
            employee.Add(new Employee("Brett", "Hume", 56));
            return employee;
        }
    }
}

Answer 1

你可以改变你的网页。配置文件来解决这个问题。change httpRuntime

<httpRuntime maxRequestLength="10240" executionTimeout="1000" />

,

maxRequestLength: ASP.NET支持的最大文件上传大小。此限制可用于防止因用户向服务器发送大文件而导致的拒绝服务攻击。指定的大小以千字节为单位。默认为4096 KB (4mb)。

executionTimeout:请求在被ASP.NET自动关闭前允许执行的最大秒数