当我执行函数的最后一行（webData）时，我得到了EXC_BAD_ACCESS。
-(void)requestSoap{
NSString *requestUrl = @"http://www.website.com/webservice.php";
NSString *soapMessage = @"the soap message";
//website and soapmessage are valid in original code.
NSError **error;
NSURLResponse *response;
//Convert parameter string to url
NSURL *url = [NSURL URLWithString:requestUrl];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:10];
NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];
//Create an XML message for webservice
[theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
[theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
[theRequest setHTTPMethod:@"POST"];
[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
NSData *webData = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:&response error:error];
}
我试图不发布一个东西，因为我在网上看到的几乎总是一个记忆的东西。
当我调试代码(NSZombieEnabled = YES)时，这就是我得到的：
[Session started at 2010-05-31 15:56:13 +0200.]
GNU gdb 6.3.50-20050815 (Apple version gdb-1461.2) (Fri Mar 5 04:43:10 UTC 2010)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin".sharedlibrary apply-load-rules all
Attaching to process 19856.
test(19856) malloc: recording malloc stacks to disk using standard recorder
test(19856) malloc: enabling scribbling to detect mods to free blocks
test(19856) malloc: process 19832 no longer exists, stack logs deleted from /tmp/stack-logs.19832.test.w9Ek4L.index
test(19856) malloc: stack logs being written into /tmp/stack-logs.19856.test.URRpQF.index
Program received signal: “EXC_BAD_ACCESS”.
有人有线索吗？
答案 0 :(得分：1)
error变量的定义出错。你应该使用
NSError *error;
而不是
NSError **error; // There is a '*' too much here
然后，当您将其传递给sendSynchronousRequest:returningResponse:error:时，您应该使用&error传递其地址：
[NSURLConnection sendSynchronousRequest:theRequest
returningResponse:&response
error:&error];