ios同步与异步网络请求

来源：互联网发布：网络优化工程师怎么样编辑：程序博客网时间：2024/04/27 22:14
1、同步请求
Object-c代码  
- (void) initRequestData : (RequestVO *) requestParam{  
    NSMutableDictionary *paramDic = [[NSMutableDictionary alloc] init];  
    NSMutableDictionary *directory = [[NSMutableDictionary alloc]init];  
    NSString *paramJson;  
    NSMutableString *urlStr = [[NSMutableString alloc] initWithString:REQUEST_URL];  
    [directory setValue:requestParam.className forKey:@"className"];  
    [directory setValue:requestParam.methodName forKey:@"methodName"];  
    [paramDic setValue:requestParam.specialCode forKey:@"specialCode"];  
    [paramDic setValue:requestParam.start forKey:@"start"];  
    [paramDic setValue:requestParam.end forKey:@"end"];  
    [directory setValue:paramDic forKey:@"parameter"];  
    if ([NSJSONSerialization isValidJSONObject:directory]) {  
        NSError *error ;  
        NSData *jsonData = [NSJSONSerialization dataWithJSONObject:directory options:NSJSONWritingPrettyPrinted error:&error];  
        paramJson =[[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];  
        paramJson = [paramJson stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];  
    }  
    [urlStr appendString:paramJson];  
    NSURL *url = [NSURL URLWithString:urlStr];  
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];  
    [request setURL:url];  
    [request setHTTPMethod:@"POST"];  
    NSHTTPURLResponse *response;  
    NSError *error ;  
    NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];  
      
    NSDictionary *dataDictory = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];  
    NSLog(@"dataDictory : %@",[dataDictory description]);  
    }  
}  
 2、异步请求
Object-c代码  
@interface CatalogViewController : UIViewController<NSURLConnectionDataDelegate>  
  
@property (strong,nonatomic) NSMutableData *receivedData;  
@end  
  
  
//  
//  CatalogViewController.m  
//  IpadLisShow  
//  
//  Created by Dwen on 13-1-21.  
//  Copyright (c) 2013年 Dwen. All rights reserved.  
//  
  
#import "CatalogViewController.h"  
#import <QuartzCore/QuartzCore.h>  
@interface CatalogViewController ()  
  
@end  
  
@implementation CatalogViewController  
@synthesize receivedData;  
  
//初始化请求数据  
- (void) initRequestData : (RequestVO *) requestParam{  
    NSMutableDictionary *paramDic = [[NSMutableDictionary alloc] init];  
    NSMutableDictionary *directory = [[NSMutableDictionary alloc]init];  
    NSString *paramJson;  
    NSMutableString *urlStr = [[NSMutableString alloc] initWithString:REQUEST_URL];  
    [directory setValue:requestParam.className forKey:@"className"];  
    [directory setValue:requestParam.methodName forKey:@"methodName"];  
    [paramDic setValue:requestParam.specialCode forKey:@"specialCode"];  
    [paramDic setValue:requestParam.orderPa forKey:@"orderPa"];  
    [paramDic setValue:requestParam.sort forKey:@"sort"];  
    [paramDic setValue:requestParam.start forKey:@"start"];  
    [paramDic setValue:requestParam.end forKey:@"end"];  
    [directory setValue:paramDic forKey:@"parameter"];  
    NSLog(@"[directory description] :%@",[directory description]);  
    if ([NSJSONSerialization isValidJSONObject:directory]) {  
        NSError *error ;  
        NSData *jsonData = [NSJSONSerialization dataWithJSONObject:directory options:NSJSONWritingPrettyPrinted error:&error];  
        paramJson =[[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];  
        paramJson = [paramJson stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];  
    }  
    [urlStr appendString:paramJson];  
    NSURL *url = [NSURL URLWithString:urlStr];  
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];  
    [request setURL:url];  
    [request setHTTPMethod:@"POST"];  
    NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];  
    if (connection) {  
        receivedData = [[NSMutableData alloc] init];  
    }else{  
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"服务器连接异常" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];  
        [alert show];  
    }  
}  
  
#pragma connection  
//接收响应  
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{  
    [receivedData setLength:0];  
}  
  
//接收到数据  
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{  
    [receivedData appendData:data];  
}  
  
//数据加载完成  
- (void)connectionDidFinishLoading:(NSURLConnection *)connection{  
    NSError *error ;  
    NSDictionary *dataDictory = [NSJSONSerialization JSONObjectWithData:receivedData options:kNilOptions error:&error];  
    //    NSLog(@"dataDictory : %@",[dataDictory description]);  
    if (NULL != dataDictory) {  
        //拍品信息  
          
    }else{  
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"该拍品无数据" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];  
        [alert show];  
    }  
}  
  
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{  
    NSLog(@"Error : %@",error);  
}  
  
@end  
0 0