解析来自 Restful Web 服务的响应的 C# 代码

Posted 2023-04-12

【中文标题】解析来自 Restful Web 服务的响应的 C# 代码

【英文标题】：C# Code that Parses the Response from Restful Webservice

【发布时间】：2019-08-11 16:13:41

【问题描述】：

我有一个读取响应的网络服务。它无法解析响应数据，因为emsg 为空。

下面是restful webservice，连接到它，返回的数据。

if (response.Body != null && response.Body != "null")

    var xDocument = XDocument.Parse(response.Body);
    var emsg = xDocument.Element("T_OUTPUT").LastNode;

        if (emsg != null)
        
            var parsedData =
            (
                from e in xDocument.Element("items").Descendants()
                select new ProductPipelineTankInventoryEntity
                
                    BUKRS = (long)e.Element("BUKRS"),
                    WERKS = (long)e.Element("WERKS"),
                    NAME1 = e.Element("NAME1").ToString(),
                    REGIO = e.Element("REGIO").ToString(),
                    MATKL = e.Element("MATKL").ToString(),
                    MATNR = (long)e.Element("MATNR"),
                    LGORT = e.Element("LGORT").ToString(),
                    GRDIP = (double)e.Element("GRDIP"),
                    TRNDATE = DateTime.Parse(e.Element("TRNDATE").ToString()),
                    VOL_NATURAL = (double)e.Element("VOL_NATURAL"),
                    GRDIP_RUN = (double)e.Element("GRDIP_RUN"),
                    VOL_RUNNING = (double)e.Element("VOL_RUNNING")
                
            ).ToList();

            ret.AddRange(parsedData);
        
    


    <ns0:YV_PIPELINE_PLANT_DIP_DETAILS.Response xmlns:ns0="urn:sap-com:document:sap:rfc:functions">
        <E_MSG/>
        <T_OUTPUT>
            <item>
                <BUKRS>2200</BUKRS>
                <WERKS>2222</WERKS>
                <NAME1>IOCL,JHARSUGUDA TERMINAL</NAME1>
                <REGIO>OR</REGIO>
                <MATKL>BULK-MS</MATKL>
                <MATNR>16400</MATNR>
                <LGORT>T005</LGORT>
                <GRDIP>1005.5</GRDIP>
                <TRNDATE>2019-08-05</TRNDATE>
                <VOL_NATURAL>2048.080</VOL_NATURAL>
                <GRDIP_RUN>0825.5</GRDIP_RUN>
                <VOL_RUNNING>1686.155</VOL_RUNNING>
            </item>
            <item>
                <BUKRS>2200</BUKRS>
                <WERKS>2222</WERKS>
                <NAME1>IOCL,JHARSUGUDA TERMINAL</NAME1>
                <REGIO>OR</REGIO>
                <MATKL>BULK-MS</MATKL>
                <MATNR>16400</MATNR>
                <LGORT>T006</LGORT>
                <GRDIP>173.9</GRDIP>
                <TRNDATE>2019-08-05</TRNDATE>
                <VOL_NATURAL>776.741</VOL_NATURAL>
                <GRDIP_RUN>0915.9</GRDIP_RUN>
                <VOL_RUNNING>4130.508</VOL_RUNNING>
            </item>
        </T_OUTPUT>
    </ns0:YV_PIPELINE_PLANT_DIP_DETAILS.Response>

上面的代码我试过了。以下部分是响应输出。

【问题讨论】：

response.Body 是从哪里来的？显示相关代码并清楚涉及的类。

“我无法解析响应”：总是发布完整的错误消息、意外结果等。

xDocument.Element("items") 在您提供的示例中不存在，因此一旦您到达该点，这将是一个问题。

大量编辑了你的问题，我意识到你的英语不好。我希望这就是你的意思。它应该可以帮助您及时得到答案。

【参考方案1】：

您需要有命名空间并将“item”更改为“item”。为了测试，我从文件而不是响应中读取 xml。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
using System.IO;
using System.Globalization;

namespace ConsoleApplication1

    class Program
    
        const string FILENAME = @"c:\temp\test.xml";
        static void Main(string[] args)
        
            string xmlResponse = File.ReadAllText(FILENAME);

            XDocument xDocument = XDocument.Parse(xmlResponse);
            XElement emsg = xDocument.Descendants().Where(x => x.Name.LocalName == "T_OUTPUT").FirstOrDefault();
            XNamespace ns = emsg.GetDefaultNamespace();

            if (emsg != null)
            
                var parsedData =
                (
                    from e in xDocument.Descendants(ns + "item")
                    select new ProductPipelineTankInventoryEntity
                    
                        BUKRS = (long)e.Element(ns + "BUKRS"),
                        WERKS = (long)e.Element(ns + "WERKS"),
                        NAME1 = (string)e.Element(ns + "NAME1"),
                        REGIO = (string)e.Element(ns + "REGIO"),
                        MATKL = (string)e.Element(ns + "MATKL"),
                        MATNR = (long)e.Element(ns + "MATNR"),
                        LGORT = (string)e.Element(ns + "LGORT"),
                        GRDIP = (double)e.Element(ns + "GRDIP"),
                        TRNDATE = (DateTime)e.Element(ns + "TRNDATE"),
                        VOL_NATURAL = (double)e.Element(ns + "VOL_NATURAL"),
                        GRDIP_RUN = (double)e.Element(ns + "GRDIP_RUN"),
                        VOL_RUNNING = (double)e.Element(ns + "VOL_RUNNING")
                    
                ).ToList();

            
        
    
    public class ProductPipelineTankInventoryEntity
    
        public long BUKRS  get; set; 
        public long WERKS  get; set; 
        public string NAME1  get; set; 
        public string REGIO  get; set; 
        public string MATKL  get; set; 
        public long MATNR  get; set; 
        public string LGORT  get; set; 
        public double GRDIP  get; set; 
        public DateTime TRNDATE  get; set; 
        public double VOL_NATURAL  get; set; 
        public double GRDIP_RUN  get; set; 
        public double VOL_RUNNING  get; set;