iOS 网络请求类封装

来源：互联网发布：西瓜播放器mac版编辑：程序博客网时间：2024/05/21 13:22

转载自：http://www.cnblogs.com/gcb999/p/3213601.html

感谢

#import "JSNetWork.h"//asiHttpRequest#import "ASIFormDataRequest.h"//xml 的解析#import "UseXmlParser.h"//判断是否联网#import "Reachability.h"//sbJson，判断json的解析#import "JSON.h"@implementation JSNetWork//创建一个单例+(JSNetWork*)shareNetWork{    static JSNetWork *network = NULL;        static dispatch_once_t onceToken;    dispatch_once(&onceToken, ^{        network = [[self alloc] init];    });    return network;}-(NSString*)JiangSuApiCacheFileName:(NSString*)fileName{        NSString * cacheFolder = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];    cacheFolder = [cacheFolder stringByAppendingPathComponent:@"JiangSu"];        NSFileManager * fmgr = [NSFileManager defaultManager];    if (![fmgr fileExistsAtPath:cacheFolder])    {        NSError * error;        [fmgr createDirectoryAtPath:cacheFolder withIntermediateDirectories:YES attributes:nil error:&error];    }    cacheFolder = [cacheFolder stringByAppendingPathComponent:fileName];    return cacheFolder;}-(NSDictionary*)getURLFromPlistWithKey:(NSString*)plKey{    NSString *path = [[NSBundle mainBundle] pathForResource:@"JiangSuURL" ofType:@"plist"];    NSDictionary *urlDic = [NSDictionary dictionaryWithContentsOfFile:path];    return ASDynamicCast(NSDictionary, [urlDic valueForKey:plKey]);}//网络请求方式--因为是单例所有传递的值要不同  必须加connectId-(void)JSNetWorkWith:(int)connectID Body:(NSString*)bodyString PostBody:(NSString*)postBody Delegate:(id)aDelegate{    //判断是否联网    if (![self isConnectNetWork]) {        UIAlertView *myalert = [[UIAlertView alloc] initWithTitle:nil message:@"请连接网络后再使用" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];        myalert.tag = 0x9999;        [myalert show];        [myalert release];        if (aDelegate && [aDelegate respondsToSelector:@selector(NetWorkBackConnectID:BackString:WithNetState:)]) {            [aDelegate NetWorkBackConnectID:connectID BackString:nil WithNetState:0];        }        return;      }        if ([bodyString hasPrefix:@"http"] == NO) {        bodyString = [NSString stringWithFormat:@"%@/%@",HTTPURLPREFIX,bodyString];            }    ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:bodyString]];    [request setDelegate:self];    request.timeOutSeconds = 20;    [request setRequestMethod:@"POST"];    [request addRequestHeader:@"Content-Type" value:@"application/xml;charset=UTF-8;"];        NSArray *aa = [postBody componentsSeparatedByString:@"&"];    for (NSString *str in aa) {        NSArray *bb = [str componentsSeparatedByString:@"="];        [request setPostValue:[bb objectAtIndex:1] forKey:[bb objectAtIndex:0]];    }        //传递参数    [request setUserInfo:[NSDictionary dictionaryWithObjectsAndKeys:[NSString stringWithFormat:@"%d",connectID],@"tag",aDelegate,@"target", nil]];        [request startAsynchronous];}//请求成功- (void)requestFinished:(ASIHTTPRequest *)request{     NSDictionary *userInfo = [request userInfo];    id delegate = [userInfo objectForKey:@"target"];    int conTag = [[userInfo objectForKey:@"tag"] intValue];    NSLog(@"\n成功  地址:%@  \n ConnectId = %d   结果 = %@",[[request url] absoluteString],conTag,[request responseString]);        NSString *responseString = [request responseString];        //    if ([responseString hasPrefix:@"<?xml"]) {//        responseString = [responseString stringByReplacingOccurrencesOfString:@"\r" withString:@""];//        responseString = [responseString stringByReplacingOccurrencesOfString:@"\n" withString:@""];//        responseString = [responseString stringByReplacingOccurrencesOfString:@"<?xml version=\"1.0\" encoding=\"GBK\"?>" withString:xmlHeader];//        //        UseXmlParser *xmlParser = [[UseXmlParser alloc] initWithParserData:[responseString dataUsingEncoding:NSUTF8StringEncoding] target:delegate connectId:conTag];//        [xmlParser parser];//        [xmlParser release];//    }else{        NSLog(@"%@",[responseString JSONValue]);                //得到数据源，通过代理返回        if (delegate && [delegate respondsToSelector:@selector(NetWorkBackConnectID:BackString:WithNetState:)]) {            [delegate NetWorkBackConnectID:conTag BackString:responseString WithNetState:0];        }        //    }}//请求失败- (void)requestFailed:(ASIHTTPRequest *)request{    NSLog(@"错误信息:%@",[request error]);    NSDictionary *userInfo = [request userInfo];    id delegate = [userInfo objectForKey:@"target"];#pragma unused(delegate)    int conTag = [[userInfo objectForKey:@"tag"] intValue];    NSLog(@"\n失败  地址:%@  \n ConnectId = %d   结果 = %@",[[request url] absoluteString],conTag,[request responseString]);        if (delegate && [delegate respondsToSelector:@selector(NetWorkBackConnectID:BackDic:WithNetState:)]) {        [delegate NetWorkBackConnectID:conTag BackDic:nil WithNetState:0];    }    if (delegate && [delegate respondsToSelector:@selector(NetWorkBackConnectID:BackString:WithNetState:)]) {        [delegate NetWorkBackConnectID:conTag BackString:@"" WithNetState:0];    }    UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"" message:@"数据请求失败" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];    [av show];    [av release];}// 判断是否联网-(BOOL)isConnectNetWork{    BOOL isExistenceNetwork = YES;    Reachability *r = [Reachability reachabilityWithHostName:@"www.baidu.com"];    switch ([r currentReachabilityStatus]) {        case NotReachable:            isExistenceNetwork=NO;            NSLog(@"没有网络");            break;        case ReachableViaWWAN:            isExistenceNetwork=YES;            NSLog(@"正在使用3G网络");            break;        case ReachableViaWiFi:            isExistenceNetwork=YES;            NSLog(@"正在使用wifi网络");            break;    }    return isExistenceNetwork;}//弹出WiFi- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{    if (alertView.tag == 0x9999) {        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=WIFI"]];//        exit(0);    }}@end

#pragma  mark -请求信息-(void)RentNewsRequest{    NSString *ss = [NSString stringWithFormat:@"szzssw/taxCommon.action?code=1001&pagecode=%d&menucode=0300000000",NewsView.pageCode == 0 ? 1 : NewsView.pageCode];    [[JSNetWork shareNetWork] JSNetWorkWith:100 Body:ss PostBody:nil Delegate:self];    //先充缓存里面去读取    NSString *cachestr=[self readApiCacheFileName:@"地税新闻列表.txt"];    //只是对上拉信息，读取缓存    if(cachestr.length>0 &&NewsView.pageCode==1){        [self NetWorkBackConnectID:100 BackString:cachestr WithNetState:0];    }}#pragma  mark -数据完成信息- (void)NetWorkBackConnectID:(int)connectID BackString:(NSString *)aBackString WithNetState:(int)netState{    NewsView.aTable.pullTableIsRefreshing=YES;    NewsView.aTable.pullTableIsLoadingMore=YES;    NewsView.aTable.pullTableIsRefreshing=NO;    NewsView.aTable.pullTableIsLoadingMore=NO;    if(connectID==100){             NSDictionary *jsonDic=ASDynamicCast(NSDictionary, [aBackString JSONValue]);        //根据请求的内容判断请求是否成功        if (![[jsonDic getStringByKey:@"dealcode"] isEqualToString:@"0000"]) {            NSLog(@"请求失败-->%@",[jsonDic getStringByKey:@"dealmsg"]);            return;        }                //如果是上拉,进行缓存      if (NewsView.pageCode==1) {         [self saveApiCacheFileName:@"地税新闻列表.txt" textContent:aBackString Append:NO];      }        if (NewsView.dataArray.count>0 &&NewsView.pageCode==1) {            [NewsView.dataArray removeAllObjects];//向下拉只显示20条，下拉只显示就叠加        }              NSArray *contentArray=ASDynamicCast(NSDictionary, [aBackString JSONValue])[@"content"];      [NewsView.dataArray addObjectsFromArray:contentArray];       [NewsView.aTable reloadData];    }    }

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