接口文件
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“wanyongkang”
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Xml.Serialization;
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using Newtonsoft.Json;
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using Alipay.AopSdk.Core.Util;
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using Newtonsoft.Json;
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namespace Alipay.AopSdk.Core.Parser
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{
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/// <summary>
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/// AOP JSON响应通用解释器。
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/// </summary>
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public class AopJsonParser<T> : IAopParser<T> where T : AopResponse
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{
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private static readonly Dictionary<string, Dictionary<string, AopAttribute>> attrs =
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new Dictionary<string, Dictionary<string, AopAttribute>>();
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protected static readonly DAopConvert AopJsonConvert = delegate(IAopReader reader, Type type)
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{
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object rsp = null;
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var pas = GetAopAttributes(type);
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var em = pas.GetEnumerator();
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while (em.MoveNext())
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{
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var kvp = em.Current;
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var ta = kvp.Value;
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var itemName = ta.ItemName;
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var listName = ta.ListName;
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if (!reader.HasReturnField(itemName) && (string.IsNullOrEmpty(listName) || !reader.HasReturnField(listName)))
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continue;
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object value = null;
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if (ta.ListType != null)
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{
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value = reader.GetListObjects(listName, itemName, ta.ListType, AopJsonConvert);
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}
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else
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{
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if (typeof(string) == ta.ItemType)
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{
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var tmp = reader.GetPrimitiveObject(itemName);
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if (tmp != null)
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value = tmp.ToString();
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}
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else if (typeof(long) == ta.ItemType)
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{
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var tmp = reader.GetPrimitiveObject(itemName);
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if (tmp != null)
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value = ((IConvertible) tmp).ToInt64(null);
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}
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else if (typeof(bool) == ta.ItemType)
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{
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value = reader.GetPrimitiveObject(itemName);
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}
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else
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{
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value = reader.GetReferenceObject(itemName, ta.ItemType, AopJsonConvert);
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}
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}
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if (value != null)
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{
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if (rsp == null)
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rsp = Activator.CreateInstance(type);
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ta.Method.Invoke(rsp, new[] {value});
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}
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}
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return rsp;
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};
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public string EncryptSourceData(IAopRequest<T> request, string body, string encryptType, string encryptKey,
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string charset)
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{
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if (!"AES".Equals(encryptType))
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throw new AopException("API only support AES!");
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var item = parseEncryptData(request, body);
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var bodyIndexContent = body.Substring(0, item.startIndex);
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var bodyEndexContent = body.Substring(item.endIndex);
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//TODO 解密逻辑
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var bizContent = AlipayEncrypt.AesDencrypt(encryptKey, item.encryptContent, charset);
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return bodyIndexContent + bizContent + bodyEndexContent;
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}
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private static Dictionary<string, AopAttribute> GetAopAttributes(Type type)
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{
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Dictionary<string, AopAttribute> tas = null;
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var inc = attrs.TryGetValue(type.FullName, out tas);
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if (inc && tas != null) // 从缓存中获取类属性元数据
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return tas;
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tas = new Dictionary<string, AopAttribute>();
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var pis = type.GetProperties();
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foreach (var pi in pis)
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{
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var ta = new AopAttribute();
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ta.Method = pi.GetSetMethod();
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// 获取对象属性名称
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var xeas = pi.GetCustomAttributes(typeof(JsonPropertyAttribute), true) as JsonPropertyAttribute[];
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if (xeas != null && xeas.Length > 0)
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ta.ItemName = xeas[0].PropertyName;
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// 获取属性类型
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if (pi.PropertyType.IsGenericType)
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{
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var types = pi.PropertyType.GetGenericArguments();
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ta.ListType = types[0];
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}
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else
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{
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ta.ItemType = pi.PropertyType;
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}
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tas.Add(pi.Name + ta.ItemType + ta.ListType, ta);
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}
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attrs[type.FullName] = tas;
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return tas;
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}
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private static string GetSign(string body)
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{
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var json = JsonConvert.DeserializeObject<IDictionary>(body);
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return (string) json["sign"];
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}
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private static string GetSignSourceData(IAopRequest<T> request, string body)
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{
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var rootNode = request.GetApiName().Replace(".", "_") + AlipayConstants.RESPONSE_SUFFIX;
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var errorRootNode = AlipayConstants.ERROR_RESPONSE;
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var indexOfRootNode = body.IndexOf(rootNode);
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var indexOfErrorRoot = body.IndexOf(errorRootNode);
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string result = null;
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if (indexOfRootNode > 0)
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result = ParseSignSourceData(body, rootNode, indexOfRootNode);
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else if (indexOfErrorRoot > 0)
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result = ParseSignSourceData(body, errorRootNode, indexOfErrorRoot);
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return result;
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}
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private static string ParseSignSourceData(string body, string rootNode, int indexOfRootNode)
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{
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var signDataStartIndex = indexOfRootNode + rootNode.Length + 2;
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var indexOfSign = body.IndexOf("\"" + AlipayConstants.SIGN + "\"");
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if (indexOfSign < 0)
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return null;
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var signDataEndIndex = indexOfSign - 1;
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var length = signDataEndIndex - signDataStartIndex;
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return body.Substring(signDataStartIndex, length);
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}
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/// <summary>
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/// 解析加密节点
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/// </summary>
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/// <param name="request"></param>
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/// <param name="body"></param>
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/// <returns></returns>
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private static EncryptParseItem parseEncryptData(IAopRequest<T> request, string body)
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{
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var rootNode = request.GetApiName().Replace(".", "_") + AlipayConstants.RESPONSE_SUFFIX;
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var errorRootNode = AlipayConstants.ERROR_RESPONSE;
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var indexOfRootNode = body.IndexOf(rootNode);
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var indexOfErrorRoot = body.IndexOf(errorRootNode);
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EncryptParseItem result = null;
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if (indexOfRootNode > 0)
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result = ParseEncryptItem(body, rootNode, indexOfRootNode);
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else if (indexOfErrorRoot > 0)
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result = ParseEncryptItem(body, errorRootNode, indexOfErrorRoot);
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return result;
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}
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private static EncryptParseItem ParseEncryptItem(string body, string rootNode, int indexOfRootNode)
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{
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var signDataStartIndex = indexOfRootNode + rootNode.Length + 2;
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var indexOfSign = body.IndexOf("\"" + AlipayConstants.SIGN + "\"");
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var signDataEndIndex = indexOfSign - 1;
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if (signDataEndIndex < 0)
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signDataEndIndex = body.Length - 1;
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var length = signDataEndIndex - signDataStartIndex;
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var encyptContent = body.Substring(signDataStartIndex + 1, length - 2);
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var item = new EncryptParseItem();
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item.encryptContent = encyptContent;
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item.startIndex = signDataStartIndex;
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item.endIndex = signDataEndIndex;
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return item;
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}
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#region IAopParser<T> Members
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public T Parse(string body, string charset)
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{
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T rsp = null;
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IDictionary json = null;
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if (!body.StartsWith("<form") && !body.StartsWith("http"))
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{
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json=JsonConvert.DeserializeObject<IDictionary>(body);
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}
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if (json != null)
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{
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// 忽略根节点的名称
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foreach (var key in json.Keys)
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{
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rsp = JsonConvert.DeserializeObject<T>(json[key].ToString());
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if (rsp != null)
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break;
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}
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}
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if (rsp == null)
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rsp = Activator.CreateInstance<T>();
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rsp.Body = body;
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return rsp;
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}
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public SignItem GetSignItem(IAopRequest<T> request, string responseBody)
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{
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if (string.IsNullOrEmpty(responseBody))
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return null;
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var signItem = new SignItem();
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var sign = GetSign(responseBody);
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signItem.Sign = sign;
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var signSourceData = GetSignSourceData(request, responseBody);
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signItem.SignSourceDate = signSourceData;
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return signItem;
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}
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#endregion
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}
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}
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