文章标题

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:@”

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

复制代码

复制代码

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];

}

}