Iphone HTTP請求工具類詳解
在項目中我封裝了個http請求的工具類，因為項目中只用到post請求，所以get請求的方法只是剛開始試了下，行得通，不知到有沒有錯誤，代碼如下：
h文件：
[cpp]
#import <Foundation/Foundation.h>
/*
*自定義http代理
*/
@protocol MyhttpUitlDelegate <NSObject>
-(void) setServicereturnData:(NSString*)servicedata;
@end
@interface MyHTTPUtil : NSObject<NSXMLParserDelegate> {
NSMutableData *webData;//異步請求返回回來的數據
id<MyhttpUitlDelegate> myhttputildelegate;
NSString *dialogcanshow;//防止快速兩次請求以上彈出多個等待對話筐
//等待對話筐
UIAlertView *mt;
}
@property(nonatomic,retain)id<MyhttpUitlDelegate> myhttputildelegate;
@property(nonatomic,retain)UIAlertView *mt;
@property(nonatomic,retain) NSString *dialogcanshow;//防止快速兩次請求以上彈出多個等待對話筐
+(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
[cpp]
#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;//每頁的行數
@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請求，返回服務器返回的數據
+(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];
}
//異步get請求
-(void)httpForYibuGET:(NSString *)urlstring addParms:(NSString *)urlparms{
// if ([ValueUtils caseEquals:self.dialogcanshow to:@"true"]){
// [self showwaitalertview];//彈出等待對話筐
// }
//
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];//設置了也是無效
[theRequest setHTTPMethod:@"GET"];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];
if(theConnection) {
webData = [[NSMutableData data] retain];
}
}
//
////異步post請求,帶參數
//
//-(void)httpForYibuPOST:(NSString *)urlstring addParms:(NSString *)urlparms{
//// if ([ValueUtils caseEquals:self.dialogcanshow to:@"true"]) {
//// [self showwaitalertview];//彈出等待對話筐
//// }
//
// NSString *allurl = [NSString stringWithFormat:@"%@%@%@",baseurl,urlstring,urlparms];
// //NSStringEncoding enc=CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000); //轉換編碼，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];//設置了也是無效
// [theRequest setHTTPMethod:@"POST"];
// NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];
//
//
// if(theConnection) {
// webData = [[NSMutableData data] retain];
//
// }
//}
//基本上只用下面這三個方法
//http的同步post請求，返回服務器返回的數據
+(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"];//寫這句而不是上面那句，就會出錯
[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];
}
//異步post請求，後面參數是nsdata類型，主要針對參數提交
-(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];//彈出等待對話筐
}
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];
if(theConnection) {
webData = [[NSMutableData data] retain];
}
}
//異步post請求,主要針對分頁查詢
-(void)httpForYibuPOSTPageparms:(NSString *)urlstring addParms:(NSData *)pageparms{
// if ([ValueUtils caseEquals:self.dialogcanshow to:@"true"]) {
// [self showwaitalertview];//彈出等待對話筐
// }
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];//彈出等待對話筐
}
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];//彈出等待對話筐
// }
}
- (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];//為頁面設值
[webData release];
[result release];
}
//彈出error對話筐
-(void)showerroralertview{
UIAlertView *erroralert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"請求數據失敗" delegate:self cancelButtonTitle:nil otherButtonTitles:@"確定", nil];
[erroralert show];
[erroralert release];
}
//彈出等待對話筐
-(void)showwaitalertview{
mt = [[UIAlertView alloc]initWithTitle:nil message:@"正在加載......" delegate:self cancelButtonTitle:nil otherButtonTitles:nil, nil];
[mt show];
}
@end
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