iPhoneHttp通信

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IOS开发笔记

iPhone Http通信

1、准备阶段

NSString *urlString = [NSString stringWithFormat:@"http://jssb.zust.edu.cn/androidLogin.action"];

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];

[request setURL:[NSURL URLWithString:urlString]];

[request setHTTPMethod:@"POST"];

2、设置头

NSString *contentType = [NSString stringWithFormat:@"text/xml"];

[request addValue:contentType forHTTPHeaderField: @"Content-Type"];

3、数据内容体的设定

NSMutableData *postBody = [NSMutableData data];

[postBody appendData:[[NSString stringWithFormat:@"id=%@&password=%@&role=%@",@"admin02",@"admin02",@"dean"] dataUsingEncoding:NSUTF8StringEncoding]];

[request setHTTPBody:postBody];

XML传送的时候：

NSMutableData *postBody = [NSMutableData data];

[postBody appendData:[[NSString stringWithFormat:@"<Request Action=\"Login\">"] dataUsingEncoding:NSUTF8StringEncoding]];

[postBody appendData:[[NSString stringWithFormat:@"<Body>"] dataUsingEncoding:NSUTF8StringEncoding]];

[postBody appendData:[[NSString stringWithFormat:@"<Username>wangjun</Username>"] dataUsingEncoding:NSUTF8StringEncoding]];

[postBody appendData:[[NSString stringWithFormat:@"<Password>password</Password>"] dataUsingEncoding:NSUTF8StringEncoding]];

[postBody appendData:[[NSString stringWithFormat:@"<PlatformID>2</PlatformID>"] dataUsingEncoding:NSUTF8StringEncoding]];

[postBody appendData:[[NSString stringWithFormat:@"<PlatformVersion>3.1.3</PlatformVersion>"] dataUsingEncoding:NSUTF8StringEncoding]];

[postBody appendData:[[NSString stringWithFormat:@"<TaskViewerName>IP 1.3</TaskViewerName>"] dataUsingEncoding:NSUTF8StringEncoding]];

[postBody appendData:[[NSString stringWithFormat:@"<TaskViewerVersion>3</TaskViewerVersion>"] dataUsingEncoding:NSUTF8StringEncoding]];

[postBody appendData:[[NSString stringWithFormat:@"</Body>"] dataUsingEncoding:NSUTF8StringEncoding]];

[postBody appendData:[[NSString stringWithFormat:@"</Request>"] dataUsingEncoding:NSUTF8StringEncoding]];

//post

[request setHTTPBody:postBody];

4、请求响应

NSHTTPURLResponse* urlResponse = nil;

NSError *error = [[NSError alloc] init];

NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error];

NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];

自己封装http请求工具类，用与淘宝：

.h文件

//
//  HttpUtil.h
//  TaoBaoTest
//
//  Created by 杭 鲍 on 12-5-7.
//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.
//
//http请求工具类，用来进行httpget以及httppost请求，返回值是一个String类型
#import <Foundation/Foundation.h>

@interface HttpUtil : NSObject {
    
}



-(NSString *)httpGet:(NSString *)httpUrl;//传入需要请求的url
-(NSString *)httpPost:(NSString *)httpUrl:(NSString *)postData;//传入需要请求的url以及需要post的参数值
@end

.m文件

#import "HttpUtil.h"

@implementation HttpUtil

-(NSString *)httpGet:(NSString *)httpUrl{
    NSMutableURLRequest *request =[[NSMutableURLRequest alloc] init]; 
	[request setURL:[NSURL URLWithString:httpUrl]]; 
	[request setHTTPMethod:@"GET"];
   // NSString *contentType = [NSString stringWithFormat:@"text/xml"]; 
    NSString *contentType = [NSString stringWithFormat:@"application/x-www-form-urlencoded"];
	[request addValue:contentType forHTTPHeaderField: @"Content-Type"];
    NSHTTPURLResponse* urlResponse = nil; 	
	NSError *error = [[NSError alloc] init]; 
	NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error]; 
	NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
    return result;
}
-(NSString *)httpPost:(NSString *)httpUrl:(NSString *)postData{
    NSMutableURLRequest *request =[[NSMutableURLRequest alloc] init]; 
	[request setURL:[NSURL URLWithString:httpUrl]]; 
	[request setHTTPMethod:@"POST"];
    NSString *contentType = [NSString stringWithFormat:@"application/x-www-form-urlencoded"]; 
	[request addValue:contentType forHTTPHeaderField: @"Content-Type"];
    NSMutableData *postBody = [NSMutableData data]; 
    [postBody appendData:[[NSString stringWithFormat:postData] dataUsingEncoding:NSUTF8StringEncoding]];
    [request setHTTPBody:postBody];
    NSHTTPURLResponse* urlResponse = nil; 	
	NSError *error = [[NSError alloc] init]; 
	NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error]; 
	NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
    return result;
}
@end

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2012-05-30 22:52
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分类:移动开发
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1 楼 zxsz4085 2012-08-12

你好，最近我在弄一个应用请求php接口，接口那边偶尔会出现一个参数都接收不到的情况。请问楼主碰到过这样的情况吗？这个会不会跟封装发送http请求的方法有问题。

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