iPhone http Post数据

最新推荐文章于 2024-01-08 23:55:49 发布

原创最新推荐文章于 2024-01-08 23:55:49 发布 · 908 阅读

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本文介绍了使用HTTP协议通过代码发送普通数据和XML文件至服务器的方法，包括设置请求参数、头信息及处理同步/异步请求。详细展示了两种数据类型在服务器端的解析过程。

之前有篇博文介绍从服务器下载数据，再写一篇基于HTTP协议向服务器发送数据的。

这里介绍两种方式，一种用于发送普通数据，一种用于发送xml文件。

这两种方式的区别不大，主要就是NSMutableURLRequest中几个属性的设置。

1、NSMutableURLRequest发送普通数据

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NSString *postString = [NSString stringWithFormat:@"name=%@&password=%@",nameFiled.text,passFiled.text];
//将post数据转换为 NSASCIIStringEncoding 编码格式
NSData *postData = [postString dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:@"http://www.wxxf.com/client/login.action"]];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:postData];

服务器端代码：

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<%
String name = request.getParameter("name");
System.out.println("name="+name);
%>

2、NSMutableURLRequest发送xml

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NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:@"http://www.wxxf.com/client/login.action"]];
[request setHTTPMethod:@"POST"];
[request addValue:@"text/xml" forHTTPHeaderField: @"Content-Type"];
//xml内容
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:@"</Body>"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"</Request>"] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:postBody];

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; 
[request setURL:[NSURL URLWithString:@"http://www.wxxf.com/client/login.action"]]; 
[request setHTTPMethod:@"POST"]; 
[request addValue:@"text/xml" forHTTPHeaderField: @"Content-Type"]; 
        
//xml内容
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:@"</Body>"] dataUsingEncoding:NSUTF8StringEncoding]]; 
[postBody appendData:[[NSString stringWithFormat:@"</Request>"] dataUsingEncoding:NSUTF8StringEncoding]]; 
[request setHTTPBody:postBody];

上面的代码创建了请求，可以使用同步或异步的方式发送请求

同步方式：

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NSHTTPURLResponse* urlResponse = nil;
NSError *error = [[NSError alloc] init];
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error];

异步方式：

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