iOS NSURLConnection 封装

QyHttpRequest.h

//
//  QyHttpRequest.h
//  QySdkDemo
//
//  Created by qingyun on 6/18/14.
//  Copyright (c) 2014 qingyun. All rights reserved.
//

#import <Foundation/Foundation.h>

#import <UIKit/UIKit.h>

@protocol QyHttpRequestDelegate  ;


@interface QyHttpRequest : NSObject<NSURLConnectionDelegate>
{
    NSMutableURLRequest                 *_request;
    NSString                            *_dataLength;
    NSDictionary                        *_responesDic;
    NSURLConnection                     *_connection;
    
}
@property(nonatomic,assign)id<QyHttpRequestDelegate> delegate;
@property(nonatomic,assign)CGFloat   timeOut;                               //超时
+ (id)requestWithURL:(NSURL *)newURL;                                       //url
-(void)setHTTPMethod:(NSString*)method;
-(void)addRequestHeader:(NSString *)header value:(NSString *)value;         //头里添加参数
-(void)setValue:(id)value forKey:(NSString*)key;                            //以Key value的方式传值
-(void)setHTTPBody:(NSData*)data;                                           //传参
-(void)setHttpStart;

@end

//delegate 代理
@protocol QyHttpRequestDelegate <NSObject>
-(void)didRequestFinished:(NSDictionary*)request;                             //请求结束
-(void)didRequestFailed:(NSError*)error;                                      //请求出错

@end

QyHttpRequest.m

//
//  QyHttpRequest.m
//  QySdkDemo
//
//  Created by qingyun on 6/18/14.
//  Copyright (c) 2014 qingyun. All rights reserved.
//

#import "QyHttpRequest.h"
static NSMutableURLRequest *urlCYOURequest = nil;
static QyHttpRequest *glCYOUHttp = nil;
//static NSDictionary *responesDic = nil;


@interface QyHttpRequest ()
{
    
}

@property(nonatomic,strong)NSDictionary *responesDic;

@end


@implementation QyHttpRequest
@synthesize delegate;
@synthesize timeOut;

+(id)requestWithURL:(NSURL *)newURL
{
    @synchronized(self)
    {
        if(glCYOUHttp == nil)
        {
            glCYOUHttp = [[self alloc]init];
        }
        [urlCYOURequest setURL:newURL];
    }
    NSLog(@"newURL:%@",newURL);
    return glCYOUHttp;
}
-(id)init
{
    self = [super init];
    if(self)
    {
        urlCYOURequest  = [[NSMutableURLRequest alloc] init];
        self.responesDic = [[NSDictionary alloc]init];
    }
    return self;
}

-(void)setHTTPMethod:(NSString *)method
{
    [urlCYOURequest setHTTPMethod:method];
}

- (void)addRequestHeader:(NSString *)header value:(NSString *)value
{
    if([header length] && [value length])
    {
        [urlCYOURequest setValue:value forHTTPHeaderField:header];
    }
    else
    {
        NSLog(@"addRequestHeader-Value null");
    }
    
}

-(void)setValue:(id)value forKey:(NSString*)key
{
    if(value && [key length])
    {
        [urlCYOURequest setValue:value forKey:key];
    }
}


#pragma mark   post 值
-(void)setHTTPBody:(NSData*)data;
{
    
    [urlCYOURequest setHTTPBody:data];
    _dataLength = [NSString stringWithFormat:@"%d", [data length]];
    [self setDefault]; //一些默认设置
}

-(void)setHTTPBodyNonSyschronous:(NSData*)data;
{
    _dataLength = [NSString stringWithFormat:@"%d", [data length]];
    [urlCYOURequest setHTTPBody:data];
    [self setDefault]; //一些默认设置
    [urlCYOURequest setTimeoutInterval:timeOut]; // 设置超时
    //__unsafe_unretained  __block __weak
    NSURLConnection  *connection = [[NSURLConnection alloc] initWithRequest:urlCYOURequest delegate:self];
    if (connection == nil)
    {
        NSLog(@"errors");
        // 创建失败
        return;
    }
}

#pragma mark  get country code //异步
-(void)setHttpStart
{
    [self setDefault]; //一些默认设置
    [urlCYOURequest setTimeoutInterval:timeOut]; // 设置超时
    NSURLConnection  *connection = [[NSURLConnection alloc] initWithRequest:urlCYOURequest delegate:self];
    if (connection == nil)
    {
        NSLog(@"errors");
        // 创建失败
        
    }
}

// 收到回应
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    NSLog(@"receive the response");
}
// 接收数据
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    NSError *error = nil;
    NSMutableData *saveData = [[NSMutableData alloc]init];
    [saveData appendData:data];
    //NSLog(@"datalength:%@",dataLength);
    //NSLog(@"requestDDDD:%@",data);
    NSString* aStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    NSLog(@"requestData:%@",aStr);
    if(aStr)
    {
        self.responesDic = [NSDictionary dictionaryWithObject:aStr forKey:@"Pc_JsonData"];
        return;
    }
    
    if(saveData)
    {
        
        self.responesDic = [NSJSONSerialization JSONObjectWithData:saveData options:NSJSONReadingMutableLeaves error:&error];
    }
}
// 数据接收完毕
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    
    [delegate didRequestFinished:self.responesDic];
    
}

-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    [self.delegate didRequestFailed:error];
    NSLog(@"Connection failed: %@", error);
}


-(void)setDefault
{
    [urlCYOURequest setValue:@"aCYOUlication/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
    [urlCYOURequest setValue:_dataLength forHTTPHeaderField:@"Content-Length"];
    if(timeOut==0)
    {
        timeOut = 30;  //默认设置20超时
    }
    
}




#pragma mark get start  异步
-(void)setHttpGetStart
{
    [urlCYOURequest setHTTPMethod:@"GET"];
    [self setDefault]; //一些默认设置
    [urlCYOURequest setTimeoutInterval:timeOut]; // 设置超时
    //__unsafe_unretained  __block __weak
    NSURLConnection  *connection = [[NSURLConnection alloc] initWithRequest:urlCYOURequest delegate:self];
    if (connection == nil)
    {
        NSLog(@"errors");
        // 创建失败
        return;
    }
    return;
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        
        NSError *error = nil;
        NSHTTPURLResponse* urlResponse = nil;
        NSData *responseData = [NSURLConnection sendSynchronousRequest:urlCYOURequest returningResponse:&urlResponse error:&error];
        dispatch_sync(dispatch_get_main_queue(), ^{   //防卡死
            
            NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
            if ([urlResponse statusCode] >= 200 && [urlResponse statusCode] < 300)
            {
                NSLog(@"Outdata:%@",result);
                NSError *errors = nil;
                self.responesDic = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableLeaves error:&errors];
                NSLog(@"self.responesDic:%@",self.responesDic);
                dispatch_sync(dispatch_get_main_queue(), ^{   //防卡死
                    
                    [self.delegate didRequestFinished:self.responesDic];
                    
                });
                
            }
            else
            {
                [self.delegate didRequestFailed:error];
            }
        });
    });
    
}

@end