读取文件内容到NSString

 

读取文件内容到nsstring，我使用以下代码

[cpp] 
nsstring *filepath = [[[nsbundle mainbundle] resourcepath] stringbyappendingpathcomponent:@"push实现.txt"];    
    
   nserror* err=nil; 
   nsstring* mtxt=[nsstring stringwithcontentsoffile:filepath encoding:nsutf8stringencoding error:&err]; 
   
   nslog(@"err:%@",err); 
    
   nslog(@"filepath:%@",filepath); 
   nslog(@"mtxt:%@",mtxt); 

 nsstring *filepath = [[[nsbundle mainbundle] resourcepath] stringbyappendingpathcomponent:@"push实现.txt"];  
   
    nserror* err=nil;
    nsstring* mtxt=[nsstring stringwithcontentsoffile:filepath encoding:nsutf8stringencoding error:&err];
  
    nslog(@"err:%@",err);
   
    nslog(@"filepath:%@",filepath);
    nslog(@"mtxt:%@",mtxt);

出错了，log为：

[plain]
2013-05-23 12:35:36.374 paging[26149:11303] err:error domain=nscocoaerrordomain code=261 "the operation couldn’t be completed. (cocoa error 261.)" userinfo=0x8868b00 {nsfilepath=/users/ericyang/library/application support/iphone simulator/6.1/applications/a3d216e7-dc10-48c3-ad40-302573d8c069/paging.app/push实现.txt, nsstringencoding=4} 
2013-05-23 12:35:36.375 paging[26149:11303] filepath:/users/ericyang/library/application support/iphone simulator/6.1/applications/a3d216e7-dc10-48c3-ad40-302573d8c069/paging.app/push实现.txt 
2013-05-23 12:35:36.375 paging[26149:11303] mtxt:(null) 

2013-05-23 12:35:36.374 paging[26149:11303] err:error domain=nscocoaerrordomain code=261 "the operation couldn’t be completed. (cocoa error 261.)" userinfo=0x8868b00 {nsfilepath=/users/ericyang/library/application support/iphone simulator/6.1/applications/a3d216e7-dc10-48c3-ad40-302573d8c069/paging.app/push实现.txt, nsstringencoding=4}
2013-05-23 12:35:36.375 paging[26149:11303] filepath:/users/ericyang/library/application support/iphone simulator/6.1/applications/a3d216e7-dc10-48c3-ad40-302573d8c069/paging.app/push实现.txt
2013-05-23 12:35:36.375 paging[26149:11303] mtxt:(null)
找到原因，是编码问题，我的文件应该是gbk的，修改代码：

 

 

[cpp]
nsstring *filepath = [[[nsbundle mainbundle] resourcepath] stringbyappendingpathcomponent:@"push实现.txt"];    
    
   unsigned long encode = cfstringconvertencodingtonsstringencoding(kcfstringencodinggb_18030_2000);     
   nsdata *responsedata = [nsdata datawithcontentsoffile:filepath]; 
   nsstring *mtxt = [[nsstring alloc] initwithdata:responsedata encoding:encode]; 
    
   nslog(@"filepath:%@",filepath); 
   nslog(@"mtxt:%@",mtxt); 

 nsstring *filepath = [[[nsbundle mainbundle] resourcepath] stringbyappendingpathcomponent:@"push实现.txt"];  
   
    unsigned long encode = cfstringconvertencodingtonsstringencoding(kcfstringencodinggb_18030_2000);   
    nsdata *responsedata = [nsdata datawithcontentsoffile:filepath];
    nsstring *mtxt = [[nsstring alloc] initwithdata:responsedata encoding:encode];
   
    nslog(@"filepath:%@",filepath);
    nslog(@"mtxt:%@",mtxt);

ok，正常打印。