public ApiHandler(ApiController api)
{
_api = api;
}
public void InvokeWebMethod(HttpContext context, ApiController api, string methodName)
{
var result = PrepareMethod(context, api, methodName);
if (result.Response.code == ApiException.CODE_SUCCESS)
{
string inputString = null;
List<object> paraList = null;
if (context.Request.Form.Count > 0)
{
string val = context.Request.Form.Get(DOCUMENTATION_FORM_KEY);
if(!string.IsNullOrEmpty(val)) inputString = val;
}
else if (context.Request.ContentLength != 0)
{
var buffer = new byte[4096];
using (var ms = new MemoryStream())
{
while (true)
{
int len = context.Request.InputStream.Read(buffer, 0, buffer.Length);
if (len == 0) break;
ms.Write(buffer, 0, len);
}
inputString = context.Request.ContentEncoding.GetString(ms.GetBuffer(), 0, Convert.ToInt32(ms.Length));
}
}
InvokeMethod(context, result, api, inputString, paraList);
}
string retString = JsonConvert.SerializeObject(result.Response, Formatting.Indented);
if (!string.IsNullOrEmpty(retString))
{
context.Response.Write(retString);
}
}
private PrepareRusult PrepareMethod(HttpContext context, ApiController api, string methodName)
{
var result = new PrepareRusult();
MethodDescriptor method;
if (!_apiDescriptor.MethodsDic.TryGetValue(methodName, out method))
{
result.Response = new Response { code = ApiException.CODE_MISS_METHOD, reason = "方法不存在" };
return result;
}
result.MethodDescriptor = method;
bool respVoid = method.ResponseParameterInfo.ParameterType == typeof(void);
result.ResponseVoid = respVoid;
if (respVoid)
{
result.Response = new Response();
}
else
{
result.Response = (Response)Activator.CreateInstance(method.ResponseParam.Type);
}
var resp = result.Response;
Identity user = null;
if (IsDebug)
{
string uid = context.Request.QueryString["user"];
if (!string.IsNullOrEmpty(uid))
{
user = new Identity(uid, "debug");
api.Authetication.SaveUser(context, user);
}
}
if (user == null)
user = api.Authetication.GetUser(context);
if (user == null || !user.IsAuthenticated)
{
try
{
user = api.Authetication.VerifyUser(context);
if (user != null)
api.Authetication.SaveUser(context, user);
}
catch (Exception ex)
{
resp.code = ApiException.CODE_ERROR;
resp.reason = "验证时发生未知错误";
api.InvokeUnhandledException(context, methodName, null, ex);
if (ApiManager.IsDebug)
resp.stacktrace = ex.Message + " " + ex.StackTrace;
result.Response = resp;
return result;
}
}
if (method.NeedAuth && (user == null || !user.IsAuthenticated))
{
resp.code = ApiException.CODE_UNAUTH;
resp.reason = "没有权限";
result.Response = resp;
result.Response.redirect = context.Response.RedirectLocation;
return result;
}
if (user == null)
{
user = new Identity();
api.TempUser = user;
}
resp.User = user;
result.Response = resp;
return result;
}
public void InvokeMethod(HttpContext context, PrepareRusult prepareResult, ApiController api, string inputString, List<object> paraList = null)
{
var method = prepareResult.MethodDescriptor;
var resp = prepareResult.Response;
string methodName = method.Name;
if (paraList == null)
{
paraList = new List<object>();
JObject jobject;
if (!string.IsNullOrEmpty(inputString))
jobject = (JObject)JsonConvert.DeserializeObject(inputString);
else
jobject = null;
foreach (var item in method.Params)
{
try
{
JToken token;
if (jobject == null || !jobject.TryGetValue(item.Name, out token))
{
if (item.Def.CanNull) paraList.Add(null);
else
{
prepareResult.Response.code = ApiException.CODE_ARG_ERROR;
prepareResult.Response.reason = "缺少参数";
return;
}
}
else
{
paraList.Add(token.ToObject(item.ParameterInfo.ParameterType));
}
}
catch
{
prepareResult.Response.code = ApiException.CODE_ARG_ERROR;
prepareResult.Response.reason = string.Format("参数格式不正确:{0}", item.Name);
return;
}
}
}
object ret;
try
{
ret = method.MethodInfo.Invoke(api, paraList.ToArray());
}
catch (TargetInvocationException ex)
{
var apiEx = ex.InnerException as ApiException;
if (apiEx != null)
{
resp.code = apiEx.Code;
resp.reason = apiEx.Message;
}
else if (ex.InnerException != null)
{
resp.code = ApiException.CODE_ERROR;
resp.reason = ex.InnerException.Message;
api.InvokeUnhandledException(context, methodName, inputString, ex.InnerException);
if (ApiManager.IsDebug)
resp.stacktrace = ex.InnerException.Message + " " + ex.InnerException.StackTrace;
}
else
{
resp.code = ApiException.CODE_ERROR;
resp.reason = string.Format("发生未知错误 method=", methodName);
}
return;
}
if (!prepareResult.ResponseVoid)
{
method.ResponseSetResultMethod.Invoke(resp, new object[] { ret });
}
if (api.TempUser != null) resp.User = api.TempUser;
if (resp.User == null) resp.User = new Identity();
}
