自动重新获取token的逻辑
2019-01-18 本文已影响14人
小苗晓雪
自动帮用户重新获取一下token , 在failure的回调里~
#import "Network.h"
#import "AFHTTPSessionManager.h"
#import "AFNetworkActivityIndicatorManager.h"
#import "AppData.h"
#import "AppDelegate.h"
#import "LoginApi.h"
#import "LoginViewCtrl.h" // 登录页
@implementation Network
// AFHTTPSessionManager 单例方法，整个系统使用同一个AFHTTPSessionManager对象:
+ (AFHTTPSessionManager *)manager
{
static AFHTTPSessionManager *manager = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
NSURLSessionConfiguration *sessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
manager = [[AFHTTPSessionManager alloc] initWithSessionConfiguration:sessionConfiguration];
//设置自定义userAgent:
[manager.requestSerializer setValue:[self getUserAgent] forHTTPHeaderField:@"User-Agent"];
//超时时间(单位秒):
manager.requestSerializer.timeoutInterval = 5;
});
return manager;
}
#pragma mark - post和get请求方法，最常用的
//post请求方法-请求尽量使用post请求，防止get请求导致中文乱码
+ (NSURLSessionDataTask *)post:(NSString *)path parameters:(NSDictionary *)parameters success:(void (^)(NSInteger statusCode, id responseObject))success failure:(void (^)(NSInteger statusCode))failure finish:(void (^)(void))finish
{
AFHTTPSessionManager *manager = [self manager];
NSMutableDictionary *ps = [NSMutableDictionary dictionaryWithCapacity:5];
if (parameters)
{
[ps addEntriesFromDictionary:parameters];
}
//添加session用户名和密码:
[self addRequiredParams:ps];
NSLog(@"post path= %@", path);
NSLog(@"post parameters= %@", ps);
[AFNetworkActivityIndicatorManager sharedManager].enabled = YES;
NSURLSessionDataTask * dataTask = [manager POST:[self getAbsoluteUrl:path] parameters:ps progress:nil
success:^(NSURLSessionTask *task, id responseObject){
NSInteger statusCode = ((NSHTTPURLResponse *)task.response).statusCode;
NSLog(@"success，statusCode: %ld", (long)statusCode);
// 请求成功
if (success)
{
success(statusCode,responseObject);
}
if (finish)
{
finish();
}
}
failure:^(NSURLSessionTask *task, NSError *error){
[self task:task parameters:parameters success:success failure:failure finish:finish];
}];
return dataTask;
}
// get请求:
+ (void)get:(NSString *)path parameters:(NSDictionary *)parameters success:(void (^)(NSInteger statusCode, id responseObject))success failure:(void (^)(NSInteger statusCode))failure finish:(void (^)(void))finish
{
AFHTTPSessionManager *manager = [self manager];
NSMutableDictionary *ps = [NSMutableDictionary dictionaryWithCapacity:5];
if (parameters)
{
[ps addEntriesFromDictionary:parameters];
}
[AFNetworkActivityIndicatorManager sharedManager].enabled = YES;
// 添加tocken:
[manager GET:[self getAbsoluteUrl:path] parameters:ps progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject){
NSInteger statusCode = ((NSHTTPURLResponse *)task.response).statusCode;
NSLog(@"success statusCode: %ld", (long)statusCode);
// 请求成功:
if (success)
{
kRequestNum = 0;
success(statusCode,responseObject);
}
if (finish)
{
finish();
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error){
[self task:task parameters:parameters success:success failure:failure finish:finish];
}];
}
// 标识符:
static NSInteger kRequestNum = 0;
/**
* 401判断方法:
*/
+ (void)task:(NSURLSessionDataTask *)task parameters:(NSDictionary *)parameters success:(void (^)(NSInteger statusCode, id responseObject))success failure:(void (^)(NSInteger statusCode))failure finish:(void (^)(void))finish
{
NSInteger statusCode = ((NSHTTPURLResponse *)task.response).statusCode;
NSLog(@"failure statusCode: %ld", (long)statusCode);
// 请求失败:
if (failure)
{
failure(statusCode);
// statusCode == 401未获取 token 错误:
if (404 == statusCode)
{
kRequestNum++;
// 如果是第一次请求:
if (1 == kRequestNum)
{
// 就帮用户重新获取 token:
[LoginApi loginWithUserPhone:parameters[@"userPhone"] WithUserPwd:parameters[@"userPwd"] success:success failure:failure finish:finish];
}
// 如果不是第一次请求 , 是用户主动发起的第二次请求:
else
{
// 弹出登录页面并且我还要将 kRequestNum 重置为 0:
kRequestNum = 0;
// 如果本身的这个请求就是登录页的请求:即: LoginApi响应了 loginWithUserPhone:WithUserPwd:success:failure:finish: 这个方法
if ([LoginApi respondsToSelector:@selector(loginWithUserPhone:WithUserPwd:success:failure:finish:)])
{
return;
}
// 如果本身的这个网络请求操作不是登录请求:
else
{
// 那就弹出登录页:
LoginViewCtrl *loginVc = [[LoginViewCtrl alloc] init];
[[AppDelegate getWindow].rootViewController presentViewController:loginVc animated:YES completion:nil];
}
}
}
//statusCode == 500等其他错误:
else
{
NSLog(@"statusCode = %ld" , (long)statusCode);
[Utils showMsg:@"服务器错误 , 网络请求失败"];
}
}
if (finish)
{
finish();
}
}
/**
* 格式化请求的url
*
* @param url 待格式化的url字符串
*
* @return 加入请求前缀后的url
*/
+ (NSString *)getAbsoluteUrl:(NSString *)url
{
NSString * allUrl = [NSString stringWithFormat:BASE_URL,url];
return allUrl;
}
/**
* 添加用户名及密码
*
* @param parameters 待添加的字典对象
*/
+ (void)addRequiredParams:(NSMutableDictionary *)parameters
{
[parameters setObject:[AppData shareInstance].userCode forKey:@"_userCode"];
[parameters setObject:[AppData shareInstance].pwdMd5 forKey:@"_pwd"];
}
/**
* 获取自定义的userAgent
* 格式为：/项目标识/appVersionName_appVersionCode/IOS/手机操作系统版本/手机型号/客户端唯一标识
*
* @return 自定义的userAgent
*/
+ (NSString *)getUserAgent{
//
NSString *appFlag = [[NSBundle mainBundle] objectForInfoDictionaryKey: @"CFBundleName"];
NSString *appVersion = [[NSBundle mainBundle] objectForInfoDictionaryKey: @"CFBundleShortVersionString"];
NSString *osVersion =[NSString stringWithFormat:@"%@ %@",[UIDevice currentDevice].systemName,[UIDevice currentDevice].systemVersion];
NSString *deviceId = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
NSLog(@"%@",[[NSBundle mainBundle] infoDictionary]);
/**
* appFlag :项目标识
* appVersion :app版本号
* osVersion :ios sdk版本
* [AppDelegate getDeviceModel] : 型号
* deviceId :设备ID
*/
return [NSString stringWithFormat:@"/%@/%@/IOS/%@/%@/%@" ,
appFlag ,
appVersion ,
osVersion ,
[AppDelegate getDeviceModel] ,
deviceId
];
}
/**
* 取消当前所有的请求
*/
+ (void)cancelAllRequest
{
[[Network manager].operationQueue cancelAllOperations];
}
@end
