iOS开发之了解iPhone中Get和Post方式

iphone客户端调用：

1、get的方式：

NSString *queryString =
          [NSString stringWithFormat:
    @“param=123%@“,
    ipAddress.text];
    NSURL *url = [NSURL URLWithString:queryString];
    NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];
    [req addValue:@“text/xml; charset=utf-8” forHTTPHeaderField:@“Content-Type”];
    [req addValue:0 forHTTPHeaderField:@“Content-Length”];
    [req setHTTPMethod:@“GET”];
    [activityIndicator startAnimating];
    conn = [[NSURLConnection alloc] initWithRequest:req delegate:self];
    if (conn) {
        webData = [[NSMutableData data] retain];
    }

2、post的方式：

NSString *postString =@"123";
    NSURL *url = [NSURL URLWithString:
@“”];
    NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];
    NSString *msgLength = [NSString stringWithFormat:@“%d”, [postString length]];
    [req addValue:@“application/x-www-form-urlencoded”
        forHTTPHeaderField:@“Content-Type”];
    [req addValue:msgLength forHTTPHeaderField:@“Content-Length”];
    [req setHTTPMethod:@“POST”];
    [req setHTTPBody: [postString dataUsingEncoding:NSUTF8StringEncoding]];
    [activityIndicator startAnimating];
    conn = [[NSURLConnection alloc] initWithRequest:req delegate:self];
    if (conn) {
        webData = [[NSMutableData data] retain];
    }