Iphone HTTP请求工具类

在项目中我封装了个http请求的工具类，因为项目中只用到post请求，所以get请求的方法只是刚开始试了下，行得通，不知到有没有错误，代码如下：

h文件：

#import <Foundation/Foundation.h>/* *自定义http代理 */@protocol MyhttpUitlDelegate <NSObject>-(void) setServicereturnData:(NSString*)servicedata;@end@interface MyHTTPUtil : NSObject<NSXMLParserDelegate> {    NSMutableData *webData;//异步请求返回回来的数据        id<MyhttpUitlDelegate> myhttputildelegate;    NSString *dialogcanshow;//防止快速两次请求以上弹出多个等待对话筐        //等待对话筐    UIAlertView *mt;}@property(nonatomic,retain)id<MyhttpUitlDelegate> myhttputildelegate;@property(nonatomic,retain)UIAlertView *mt;@property(nonatomic,retain) NSString *dialogcanshow;//防止快速两次请求以上弹出多个等待对话筐+(NSString *)httpForTongbuGET:(NSString *)urlstring;+(NSString *)httpForTongbuPOST:(NSString *)urlstring addParms:(NSData *)urlparms;//-(void)httpForYibuPOST:(NSString *)urlstring addParms:(NSString *)urlparms;-(void)httpForYibuPOSTForData:(NSString *)urlstring addParms:(NSData *)urlparms;-(void)httpForYibuGET:(NSString *)urlstring addParms:(NSString *)urlparms;-(void)httpForYibuPOSTPageparms:(NSString *)urlstring addParms:(NSData *)pageparms;-(void)showwaitalertview;@end

m文件

#import "MyHTTPUtil.h"#import "FileUtils.h"@implementation MyHTTPUtil//url公用部分//NSString *baseurl = @"http://192.168.0.63:8080/mbtravel/";//NSString *baseurl = @"http://192.168.0.63:8081/mbtr/";NSString *baseurl = @"http://192.168.128.1:8080/mbtravel/";NSInteger PagingRows = 5;//每页的行数@synthesize myhttputildelegate;@synthesize dialogcanshow;@synthesize mt;-(void)dealloc{[myhttputildelegate release];    [dialogcanshow release];    [mt release];[super dealloc];}-(id)init{    self.dialogcanshow = @"false";   return  [super init];}//http的同步get请求，返回服务器返回的数据+(NSString *)httpForTongbuGET:(NSString *)urlstring{    NSString *allurl = [NSString stringWithFormat:@"%@%@",baseurl,urlstring];    NSURL* url = [NSURL URLWithString:allurl];          NSMutableURLRequest* request = [[[NSMutableURLRequest alloc]init]autorelease];     [request setURL:url];      [request setHTTPMethod:@"GET"];     NSString *contentType = [NSString stringWithFormat:@"text/xml"];//@"application/json"     [request addValue:contentType forHTTPHeaderField:@"Content-Type"];    NSHTTPURLResponse *urlResponese = nil;    NSError *error = [[NSError alloc]init];    NSData* data = [NSURLConnection sendSynchronousRequest:request   returningResponse:&urlResponese error:&error];     NSString* result= [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];    if([urlResponese statusCode] >=200&&[urlResponese statusCode]<300){                return result;    }    return nil;    [error release];    [result release];}//异步get请求-(void)httpForYibuGET:(NSString *)urlstring addParms:(NSString *)urlparms{    //    if ([ValueUtils caseEquals:self.dialogcanshow to:@"true"]){    //        [self showwaitalertview];//弹出等待对话筐    //    }    //        NSString *allurl = [NSString stringWithFormat:@"%@%@%@",baseurl,urlstring,urlparms];    NSLog(@"%@",allurl);    NSURL *url = [NSURL URLWithString:allurl];                               NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:15];          [theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];    //[theRequest setTimeoutInterval:15];//设置了也是无效    [theRequest setHTTPMethod:@"GET"];     NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];        if(theConnection) {        webData = [[NSMutableData data] retain];            }}//////异步post请求,带参数////-(void)httpForYibuPOST:(NSString *)urlstring addParms:(NSString *)urlparms{////    if ([ValueUtils caseEquals:self.dialogcanshow to:@"true"]) {////        [self showwaitalertview];//弹出等待对话筐////    }//    //    NSString *allurl = [NSString stringWithFormat:@"%@%@%@",baseurl,urlstring,urlparms];//          //NSStringEncoding  enc=CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000);   //转换编码，包括中文//   // NSString *allurl2=[allurl stringByAddingPercentEscapesUsingEncoding:enc];//   NSString *allurl2= [allurl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];//    NSLog(@"url===%@",allurl2);//    NSURL *url = [NSURL URLWithString:allurl2];   //    NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:15];  //    [theRequest  setValue:@"zh-cn" forHTTPHeaderField:@"Accept-Language"];//    [theRequest  setValue:@"gzip, deflate" forHTTPHeaderField:@"Accept-Encoding"];//    [theRequest addValue: @"application/x-www-form-urlencoded;charset=UTF-8" forHTTPHeaderField:@"Content-Type"];//    //[theRequest setTimeoutInterval:15];//设置了也是无效//    [theRequest setHTTPMethod:@"POST"]; //    NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];//    //    //    if(theConnection) {//        webData = [[NSMutableData data] retain];//        //    }//}//基本上只用下面这三个方法//http的同步post请求，返回服务器返回的数据+(NSString *)httpForTongbuPOST:(NSString *)urlstring addParms:(NSData *)urlparms{    NSString *allurl = [NSString stringWithFormat:@"%@%@",baseurl,urlstring];    NSURL* url = [NSURL URLWithString:allurl];      NSMutableURLRequest* request = [[[NSMutableURLRequest alloc]init]autorelease];     [request setURL:url];      [request setHTTPMethod:@"POST"];     [request  setValue:@"zh-cn" forHTTPHeaderField:@"Accept-Language"];    [request  setValue:@"gzip, deflate" forHTTPHeaderField:@"Accept-Encoding"];    [request addValue: @"application/x-www-form-urlencoded;charset=UTF-8" forHTTPHeaderField:@"Content-Type"];   // [request addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];//写这句而不是上面那句，就会出错     [request setHTTPBody:urlparms];      NSHTTPURLResponse *urlResponese = nil;    NSError *error = [[NSError alloc]init];    NSData* data = [NSURLConnection sendSynchronousRequest:request   returningResponse:&urlResponese error:&error];     NSString* result= [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];    if([urlResponese statusCode] >=200&&[urlResponese statusCode]<300){                return result;    }    return nil;    [error release];    [result release];}//异步post请求，后面参数是nsdata类型，主要针对参数提交-(void)httpForYibuPOSTForData:(NSString *)urlstring addParms:(NSData *)urlparms{    NSString *allurl = [NSString stringWithFormat:@"%@%@",baseurl,urlstring];    NSString *allurl2= [allurl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];    NSURL *url = [NSURL URLWithString:allurl2];       NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:15];      [theRequest  setValue:@"zh-cn" forHTTPHeaderField:@"Accept-Language"];    [theRequest  setValue:@"gzip, deflate" forHTTPHeaderField:@"Accept-Encoding"];    [theRequest addValue: @"application/x-www-form-urlencoded;charset=UTF-8" forHTTPHeaderField:@"Content-Type"];    [theRequest setHTTPMethod:@"POST"];     [theRequest  setValue:[NSString stringWithFormat:@"%d",PagingRows] forHTTPHeaderField:@"PagingRows"];    [theRequest setHTTPBody:urlparms];        if ([ValueUtils caseEquals:self.dialogcanshow to:@"true"]){        [self showwaitalertview];//弹出等待对话筐    }        NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];        if(theConnection) {        webData = [[NSMutableData data] retain];            }}//异步post请求,主要针对分页查询-(void)httpForYibuPOSTPageparms:(NSString *)urlstring addParms:(NSData *)pageparms{    //    if ([ValueUtils caseEquals:self.dialogcanshow to:@"true"]) {    //        [self showwaitalertview];//弹出等待对话筐    //    }        NSString *allurl = [NSString stringWithFormat:@"%@%@",baseurl,urlstring];    NSString *allurl2= [allurl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];    NSURL *url = [NSURL URLWithString:allurl2];       NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:15];      [theRequest  setValue:@"zh-cn" forHTTPHeaderField:@"Accept-Language"];    [theRequest  setValue:@"gzip, deflate" forHTTPHeaderField:@"Accept-Encoding"];    [theRequest addValue: @"application/x-www-form-urlencoded;charset=UTF-8" forHTTPHeaderField:@"Content-Type"];    [theRequest setHTTPMethod:@"POST"];     [theRequest  setValue:[NSString stringWithFormat:@"%d",PagingRows] forHTTPHeaderField:@"PagingRows"];    [theRequest setHTTPBody:pageparms];        if ([ValueUtils caseEquals:self.dialogcanshow to:@"true"]){        [self showwaitalertview];//弹出等待对话筐    }        NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];            if(theConnection) {        webData = [[NSMutableData data] retain];            }}- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {[webData setLength:0];//    if ([ValueUtils caseEquals:self.dialogcanshow to:@"true"]){//        [self showwaitalertview];//弹出等待对话筐//    }    }- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {[webData appendData:data];}- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {    if (mt!=nil) {      [mt dismissWithClickedButtonIndex:1 animated:YES];    }    [self performSelectorInBackground:@selector(showerroralertview) withObject:nil];     //[mt dismissWithClickedButtonIndex:1 animated:YES];}- (void)connectionDidFinishLoading:(NSURLConnection *)connection {    if (mt!=nil) {        [mt dismissWithClickedButtonIndex:1 animated:YES];    }[connection release];        NSString* result= [[NSString alloc] initWithData:webData encoding:NSUTF8StringEncoding];    [self.myhttputildelegate setServicereturnData:result];//为页面设值[webData release];    [result release];}//弹出error对话筐-(void)showerroralertview{    UIAlertView *erroralert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"请求数据失败" delegate:self cancelButtonTitle:nil otherButtonTitles:@"确定", nil];    [erroralert show];    [erroralert release];    }//弹出等待对话筐-(void)showwaitalertview{    mt = [[UIAlertView alloc]initWithTitle:nil message:@"正在加载......" delegate:self cancelButtonTitle:nil otherButtonTitles:nil, nil];    [mt show];   }@end