How to extract the database file of iphone

In iPhone, there are many ways to extract the file name in the link from the data stream in the network. The following are some summaries.

Method 1: the most direct.

ns string * urlString = @ "/img/Baidu _ logo _ fqj _ 10 . gif "；

ns string * fileName =[urlString lastPathComponent]；

NSLog(@“% @ "%@", file name);

Method 2: Segmentation by character or time series.

Object -C

ns string * link = @ "/img/Baidu _ logo _ fqj _ 10 . gif "；

ns string * filename =[[ns string alloc]init]；

NSArray * separated array =[[NSArray alloc]init]；

separated array =[link components separated bystring:@ "/]；

filename =[separated array last object]；

NSLog(@“% @”，separated array)；

NSLog(@“% @ "%@", file name);

[File name publishing];

Method 3: treat the link as a path.

ns string * urlString = @ "/img/Baidu _ logo _ fqj _ 10 . gif "；

NSArray * urlCom =[[NSArray alloc]init with array:[URL path components]]；

NSLog(@“% @”，[urlCom last object])；

[urlCom publishing];

Method 4: NSRange. It is very convenient to intercept binary files.

ns string * urlString = @ "/img/Baidu _ logo _ fqj _ 10 . gif "；

NSString * fileName

ns range range =[urlString range of string:@ "/" options:NSBackwardsSearch]；

if (range.location！ = NSNotFound)

{

fileName =[urlString substringromindex:range . location+ 1]；

if([[fileName lower casestring]hasSuffix:@”。 gif"])

{

NSLog(@“% @ "%@", file name);

}

other

{

}

other

{

Return;

} & lt/pre & gt； & ltbr & gt

& ltbr & gt

& ltpre & gt& lt/pre & gt；

& ltdiv id = " live margins _ control " style = " position:absolute； Z index: 9999; top:220 px； Left: 5px width:1px; Height: 1px ">

& ltimg src = " " alt = " " height = " 5 " width = " 77 " style = " position:absolute； Left:-77px; top:-5px " >& lt/div & gt；

& ltpre & gt& lt/pre & gt；

& ltdiv id = " live margins _ control " style = " position:absolute； z-index:9999 " >& ltimg src = " " alt = " " height = " 5 " width = " 77 " style = " position:absolute； Left:-77px; top:-5px " >& ltimg src = " " alt = " " style = " position:absolute； Left: 0; top:-5px " >& ltimg id = " monitor-play-button " src = " " alt = " " style = " position:absolute； Left:1px; top:0 " >& lt/div & gt；

& ltpre & gt& lt/pre & gt；

& ltimg id = " monitor-play-button " src = " " alt = " " style = " position:absolute； Left:1px; top:0 " >& lt/div & gt；

& ltpre & gt& lt/pre & gt；

& ltdiv id = " live margins _ control " style = " position:absolute； z-index:9999 " >& ltimg src = " " height = " 5 " width = " 77 " alt = " " style = " position:absolute； Left:-77px; top:-5px " >

& ltimg src = " " alt = " " style = " position:absolute； Left: 0; top:-5px " >& ltimg id = " monitor-play-button " src = " " alt = " " style = " position:absolute； Left:1px; top:0 " >& lt/div & gt；

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