/// <summary>
/// http请求之前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
public Task BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var token = (CancellationToken)parameter.Value;
context.CancellationTokens.Add(token);
return(ApiTask.CompletedTask);
}
/// <summary>
/// 生成ApiParameterDescriptor
/// </summary>
/// <param name="parameter">参数信息</param>
/// <returns></returns>
private static ApiParameterDescriptor GetParameterDescriptor(ParameterInfo parameter)
{
var parameterType = parameter.ParameterType;
var descriptor = new ApiParameterDescriptor
{
Value = null,
Name = parameter.Name,
Index = parameter.Position,
ParameterType = parameterType,
IsApiParameterable = parameterType.IsInheritFrom <IApiParameterable>() || parameterType.IsInheritFrom <IEnumerable <IApiParameterable> >(),
IsHttpContent = parameterType.IsInheritFrom <HttpContent>(),
IsSimpleType = parameterType.IsSimple(),
IsEnumerable = parameterType.IsInheritFrom <IEnumerable>(),
IsDictionaryOfObject = parameterType.IsInheritFrom <IDictionary <string, object> >(),
IsDictionaryOfString = parameterType.IsInheritFrom <IDictionary <string, string> >(),
Attributes = parameter.GetAttributes <IApiParameterAttribute>(true).ToArray()
};
if (descriptor.Attributes.Length == 0)
{
if (descriptor.IsApiParameterable == true)
{
descriptor.Attributes = new[] { new ParameterableAttribute() };
}
else if (descriptor.IsHttpContent == true)
{
descriptor.Attributes = new[] { new HttpContentAttribute() };
}
else
{
descriptor.Attributes = new[] { new PathQueryAttribute() };
}
}
return(descriptor);
}
/// <summary>
/// 将参数值序列化为键值对
/// </summary>
/// <param name="parameter">参数</param>
/// <returns></returns>
public IEnumerable <KeyValuePair <string, string> > Serialize(ApiParameterDescriptor parameter)
{
if (parameter.IsSimpleType == true)
{
var kv = this.FormatAsSimple(parameter.Name, parameter.Value);
return(new[] { kv });
}
if (parameter.IsDictionaryOfString == true)
{
return(this.FormatAsDictionary <string>(parameter));
}
if (parameter.IsDictionaryOfObject == true)
{
return(this.FormatAsDictionary <object>(parameter));
}
if (parameter.IsEnumerable == true)
{
return(this.ForamtAsEnumerable(parameter));
}
return(this.FormatAsComplex(parameter));
}
/// <summary>
/// 获取http请求内容
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
protected override HttpContent GetHttpContent(ApiActionContext context, ApiParameterDescriptor parameter)
{
var encoding = Encoding.UTF8;
var body = this.GetFormContent(parameter, encoding);
return(new StringContent(body, encoding, "application/x-www-form-urlencoded"));
}
/// <summary>
/// 从参数值获取IApiParameterable对象
/// </summary>
/// <param name="parameter"></param>
/// <returns></returns>
private IEnumerable <IApiParameterable> GetApiParameterables(ApiParameterDescriptor parameter)
{
if (parameter.Value == null)
{
yield break;
}
var able = parameter.Value as IApiParameterable;
if (able != null)
{
yield return(able);
yield break;
}
var array = parameter.Value as IEnumerable <IApiParameterable>;
if (array != null)
{
foreach (var ele in array)
{
yield return(ele);
}
}
}
/// <summary>
/// 执行请求前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
async Task IApiParameterable.BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var httpContent = context.EnsureNoGet().RequestMessage.Content.CastOrCreateMultipartContent();
httpContent.AddFile(this.GetStream(), parameter.Name, this.FileName, this.ContentType);
context.RequestMessage.Content = httpContent;
await TaskExtend.CompletedTask;
}
/// <summary>
/// http请求之前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
public async Task BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var ables = this.GetApiParameterables(parameter);
foreach (var item in ables)
{
await item?.BeforeRequestAsync(context, parameter);
}
}
/// <summary>
/// http请求之前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
async Task IApiParameterable.BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var keyValue = new KeyValuePair <string, string>(parameter.Name, this.stringValue);
var httpContent = await context.EnsureNoGet().RequestMessage.Content.MergeKeyValuesAsync(new[] { keyValue });
context.RequestMessage.Content = httpContent;
await TaskExtend.CompletedTask;
}
/// <summary>
/// 将参数值序列化为json文本
/// </summary>
/// <param name="parameter">对象</param>
/// <param name="encoding">编码</param>
/// <returns></returns>
public string Serialize(ApiParameterDescriptor parameter, Encoding encoding)
{
if (parameter.Value == null)
{
return(null);
}
var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
return(serializer.Serialize(parameter.Value));
}
/// <summary>
/// http请求之前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
Task IApiParameterable.BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var header = context.RequestMessage.Headers;
header.Remove(scheme);
if (this.authValue != null)
{
header.TryAddWithoutValidation(scheme, this.authValue);
}
return(ApiTask.CompletedTask);
}
/// <summary>
/// 获取http请求内容
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
protected override HttpContent GetHttpContent(ApiActionContext context, ApiParameterDescriptor parameter)
{
var xmlSerializer = new XmlSerializer(parameter.ParameterType);
using (var stream = new MemoryStream())
{
xmlSerializer.Serialize(stream, parameter.Value);
var xml = Encoding.UTF8.GetString(stream.ToArray());
return(new StringContent(xml, Encoding.UTF8, "application/xml"));
}
}
/// <summary>
/// 数组为键值对
/// </summary>
/// <param name="parameter">参数</param>
/// <returns></returns>
private IEnumerable <KeyValuePair <string, string> > ForamtAsEnumerable(ApiParameterDescriptor parameter)
{
var array = parameter.Value as IEnumerable;
if (array == null)
{
return(Enumerable.Empty <KeyValuePair <string, string> >());
}
return(from item in array.Cast <object>()
select this.FormatAsSimple(parameter.Name, item));
}
/// <summary>
/// http请求之前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
public void BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var ables = this.GetApiParameterables(parameter);
foreach (var item in ables)
{
if (item != null)
{
item.BeforeRequestAsync(context, parameter);
}
}
}
/// <summary>
/// http请求之前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
public async Task BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var ables = this.GetApiParameterables(parameter);
foreach (var item in ables)
{
if (item != null)
{
await item.BeforeRequestAsync(context, parameter).ConfigureAwait(false);
}
}
}
/// <summary>
/// 生成数组的表单内容
/// </summary>
/// <param name="parameter">参数</param>
/// <param name="encoding">编码</param>
/// <returns></returns>
private string GetContentArray(ApiParameterDescriptor parameter, Encoding encoding)
{
var array = parameter.Value as Array;
if (array == null)
{
return(null);
}
var keyValues = array.Cast <object>().Select(item => this.GetContentSimple(parameter.Name, item, encoding));
return(string.Join("&", keyValues));
}
/// <summary>
/// 生成表单内容
/// key1=value1&key2=value2
/// </summary>
/// <param name="parameter">参数</param>
/// <param name="encoding">编码</param>
/// <returns></returns>
protected virtual string GetFormContent(ApiParameterDescriptor parameter, Encoding encoding)
{
if (parameter.IsSimpleType == true)
{
return(this.GetContentSimple(parameter.Name, parameter.Value, encoding));
}
else if (parameter.ParameterType.IsArray == true)
{
return(this.GetContentArray(parameter, encoding));
}
return(this.GetContentComplex(parameter, encoding));
}
/// <summary>
/// http请求之前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
public override async Task BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
if (this.IgnoreWhenNull && parameter.Value == null)
{
return;
}
var uri = context.RequestMessage.RequestUri;
var pathQuery = this.GetPathQuery(uri.LocalPath + uri.Query, parameter);
context.RequestMessage.RequestUri = new Uri(uri, pathQuery);
await TaskEx.CompletedTask;
}
/// <summary>
/// 生成复杂类型的表单内容
/// </summary>
/// <param name="parameter">参数</param>
/// <param name="encoding">编码</param>
/// <returns></returns>
private string GetContentComplex(ApiParameterDescriptor parameter, Encoding encoding)
{
var instance = parameter.Value;
var keyValues = Property
.GetProperties(parameter.ParameterType)
.Select(p =>
{
var value = instance == null ? null : p.GetValue(instance);
return(this.GetContentSimple(p.Name, value, encoding));
});
return(string.Join("&", keyValues));
}
/// <summary>
/// http请求之前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
public Task BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var fileInfo = parameter.Value as FileInfo;
if (fileInfo != null)
{
var stream = fileInfo.Open(FileMode.Open, FileAccess.Read);
var fileName = Path.GetFileName(fileInfo.FullName);
var encodedFileName = HttpUtility.UrlEncode(fileName, Encoding.UTF8);
context.RequestMessage.AddMulitpartFile(stream, parameter.Name, encodedFileName, null);
}
return(ApiTask.CompletedTask);
}
/// <summary>
/// 获取新的Path与Query
/// </summary>
/// <param name="pathQuery">原始path与query</param>
/// <param name="parameter">参数</param>
/// <returns></returns>
private string GetPathQueryComplex(string pathQuery, ApiParameterDescriptor parameter)
{
var instance = parameter.Value;
var instanceType = parameter.ParameterType;
var properties = Property.GetProperties(instanceType);
foreach (var p in properties)
{
var value = instance == null ? null : p.GetValue(instance);
pathQuery = this.GetPathQuerySimple(pathQuery, p.Name, value);
}
return(pathQuery);
}
/// <summary>
/// 从参数值获取IApiParameterable对象
/// </summary>
/// <param name="parameter"></param>
/// <returns></returns>
private IEnumerable <IApiParameterable> GetApiParameterables(ApiParameterDescriptor parameter)
{
if (parameter.Value is IApiParameterable able)
{
yield return(able);
}
else if (parameter.Value is IEnumerable <IApiParameterable> array)
{
foreach (var ele in array)
{
yield return(ele);
}
}
}
/// <summary>
/// 获取新的Path与Query
/// </summary>
/// <param name="pathQuery">原始path与query</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
private string GetPathQuery(string pathQuery, ApiParameterDescriptor parameter)
{
if (parameter.IsSimpleType == true)
{
return(this.GetPathQuerySimple(pathQuery, parameter.Name, parameter.Value));
}
if (parameter.ParameterType.IsArray == true)
{
return(this.GetPathQueryArray(pathQuery, parameter));
}
return(this.GetPathQueryComplex(pathQuery, parameter));
}
/// <summary>
/// http请求之前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
public async Task BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
if (parameter.Value is IApiParameterable able)
{
await able.BeforeRequestAsync(context, parameter).ConfigureAwait(false);
}
else if (parameter.Value is IEnumerable <IApiParameterable> array)
{
foreach (var item in array)
{
await item.BeforeRequestAsync(context, parameter).ConfigureAwait(false);
}
}
}
/// <summary>
/// 复杂类型为键值对
/// </summary>
/// <param name="parameter">参数</param>
/// <returns></returns>
private IEnumerable <KeyValuePair <string, string> > FormatAsComplex(ApiParameterDescriptor parameter)
{
var instance = parameter.Value;
if (instance == null)
{
return(Enumerable.Empty <KeyValuePair <string, string> >());
}
return
(from p in Property.GetProperties(instance.GetType())
let value = p.GetValue(instance)
select this.FormatAsSimple(p.Name, value));
}
/// <summary>
/// 获取新的Path与Query
/// </summary>
/// <param name="pathQuery">原始path与query</param>
/// <param name="parameter">参数</param>
/// <returns></returns>
private string GetPathQueryArray(string pathQuery, ApiParameterDescriptor parameter)
{
var array = parameter.Value as Array;
if (array == null)
{
return(pathQuery);
}
foreach (var item in array)
{
pathQuery = this.GetPathQuerySimple(pathQuery, parameter.Name, item);
}
return(pathQuery);
}
/// <summary>
/// 执行请求前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的属性</param>
async Task IApiParameterable.BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var method = context.RequestMessage.Method;
if (method == HttpMethod.Get || method == HttpMethod.Head)
{
return;
}
var httpContent = context.RequestMessage.Content.CastMultipartContent();
var fileContent = new MulitpartFileContent(this.GetStream(), parameter.Name, this.FileName, this.ContentType);
httpContent.Add(fileContent);
context.RequestMessage.Content = httpContent;
await TaskExtend.CompletedTask;
}
/// <summary>
/// 执行请求前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
async Task IApiParameterable.BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var method = context.RequestMessage.Method;
if (method == HttpMethod.Get || method == HttpMethod.Head)
{
var message = string.Format("{0}方法不支持使用{1}", method, this.GetType().Name);
throw new NotSupportedException(message);
}
var httpContent = context.RequestMessage.Content.CastOrCreateMultipartContent();
httpContent.AddFile(this.GetStream(), parameter.Name, this.FileName, this.ContentType);
context.RequestMessage.Content = httpContent;
await TaskExtend.CompletedTask;
}
/// <summary>
/// 将参数值序列化为xml文本
/// </summary>
/// <param name="parameter">对象</param>
/// <param name="encoding">编码</param>
/// <returns></returns>
public string Serialize(ApiParameterDescriptor parameter, Encoding encoding)
{
if (parameter.Value == null)
{
return(null);
}
var xmlSerializer = new XmlSerializer(parameter.Value.GetType());
using (var stream = new MemoryStream())
{
var xmlWriter = new XmlTextWriter(stream, encoding);
xmlSerializer.Serialize(xmlWriter, parameter.Value);
return(encoding.GetString(stream.ToArray()));
}
}
/// <summary>
/// http请求之前
/// </summary>
/// <param name="context">上下文</param>
/// <param name="parameter">特性关联的参数</param>
/// <returns></returns>
async Task IApiParameterable.BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter)
{
var method = context.RequestMessage.Method;
if (method == HttpMethod.Get || method == HttpMethod.Head)
{
var message = string.Format("{0}方法不支持使用{1}", method, this.GetType().Name);
throw new NotSupportedException(message);
}
var keyValue = new KeyValuePair <string, string>(parameter.Name, this.stringValue);
var httpContent = await context.RequestMessage.Content.MergeKeyValuesAsync(new[] { keyValue });
context.RequestMessage.Content = httpContent;
await TaskExtend.CompletedTask;
}
/// <summary>
/// 验证参数值输入合法性
/// 验证参数的属性值输入合法性
/// </summary>
/// <param name="parameter">参数描述</param>
/// <param name="validateProperty">是否验证属性值</param>
/// <exception cref="ValidationException"></exception>
public static void ValidateParameter(ApiParameterDescriptor parameter, bool validateProperty)
{
var name = parameter.Name;
var instance = parameter.Value;
foreach (var validation in parameter.ValidationAttributes)
{
validation.Validate(instance, name);
}
if (validateProperty == true && IsNeedValidateProperty(instance) == true)
{
var ctx = new ValidationContext(instance)
{
MemberName = name
};
Validator.ValidateObject(instance, ctx, true);
}
}
