如何读取 HttpRequest POST 的正文 REST Web 服务 - C# WCF

本文关键字:Web REST 正文 服务 WCF POST 何读取 读取 HttpRequest | 更新日期: 2023-09-27 18:18:31

我有一个Apex Class(SalesForce中的一个类(,它调用REST Web服务。

public class WebServiceCallout 
{
    @future (callout=true)
    public static void sendNotification(String aStr) 
    {
        HttpRequest req = new HttpRequest();
        HttpResponse res = new HttpResponse();
        Http http = new Http();
        req.setEndpoint('http://xx.xxx.xxx.xx:41000/TestService/web/test');
        req.setMethod('POST');
        req.setHeader('Content-Type', 'application/json');
        req.setBody(aStr); // I want to read this in the web service
        try 
        {
            res = http.send(req);
        } 
        catch(System.CalloutException e) 
        {
            System.debug('Callout error: '+ e);
            System.debug(res.toString());
        }
    }
}

REST Web 服务(C#、WCF(如下所示:

public interface ITestService
{
    [OperationContract]
    [WebInvoke(Method = "POST",
     ResponseFormat = WebMessageFormat.Json,
     BodyStyle = WebMessageBodyStyle.Bare,
     UriTemplate = "/test")]
    string Test(string aStr);
}

Test()方法执行基元操作。

当我跑步时

WebServiceCallout.sendNotification("a test message")

POST 进入 Web 服务,但我如何读取在 sendNotification() 方法中设置的 HttpRequest req正文中设置的内容 - req.setBody(aStr);

也就是说,string Test(string aStr);的参数应该是什么?

我是否需要指定任何其他内容,例如WebInvokeApp.config中的任何配置/属性(例如binding(?

如何读取 HttpRequest POST 的正文 REST Web 服务 - C# WCF

如果要读取传入请求的原始正文,则应将参数的类型定义为Stream,而不是string。下面的代码显示了实现方案的一种方法,http://blogs.msdn.com/b/carlosfigueira/archive/2008/04/17/wcf-raw-programming-model-receiving-arbitrary-data.aspx 上的帖子提供了有关此"原始"模式的更多信息。

public class StackOverflow_25377059
{
    [ServiceContract]
    public interface ITestService
    {
        [OperationContract]
        [WebInvoke(Method = "POST",
         ResponseFormat = WebMessageFormat.Json,
         BodyStyle = WebMessageBodyStyle.Bare,
         UriTemplate = "/test")]
        string Test(Stream body);
    }
    public class Service : ITestService
    {
        public string Test(Stream body)
        {
            return new StreamReader(body).ReadToEnd();
        }
    }
    class RawMapper : WebContentTypeMapper
    {
        public override WebContentFormat GetMessageFormatForContentType(string contentType)
        {
            return WebContentFormat.Raw;
        }
    }
    public static void Test()
    {
        var baseAddress = "http://" + Environment.MachineName + ":8000/Service";
        var host = new ServiceHost(typeof(Service), new Uri(baseAddress));
        var binding = new WebHttpBinding { ContentTypeMapper = new RawMapper() };
        host.AddServiceEndpoint(typeof(ITestService), binding, "").Behaviors.Add(new WebHttpBehavior());
        host.Open();
        Console.WriteLine("Host opened");
        var req = (HttpWebRequest)HttpWebRequest.Create(baseAddress + "/test");
        req.Method = "POST";
        req.ContentType = "application/json";
        var reqStream = req.GetRequestStream();
        var body = "a test message";
        var bodyBytes = new UTF8Encoding(false).GetBytes(body);
        reqStream.Write(bodyBytes, 0, bodyBytes.Length);
        reqStream.Close();
        var resp = (HttpWebResponse)req.GetResponse();
        Console.WriteLine("HTTP/{0} {1} {2}", resp.ProtocolVersion, (int)resp.StatusCode, resp.StatusDescription);
        foreach (var header in resp.Headers.AllKeys)
        {
            Console.WriteLine("{0}: {1}", header, resp.Headers[header]);
        }
        Console.WriteLine();
        Console.WriteLine(new StreamReader(resp.GetResponseStream()).ReadToEnd());
        Console.WriteLine();
    }
}

顺便说一下,您的传入请求在技术上不正确 - 您说(通过内容类型(您正在发送 JSON,但请求正文 ( a test message ( 不是有效的 JSON 字符串(它应该用引号括起来 - "a test message"改为 JSON 字符串(。