NSString *pattern = @"(?<=<td class="bigblod">).*?(?=</td>)"; 2. 3. NSString *pattern1 = @"<img src="http://www.weather.com.cn/m2/i/icon_weather/50x36/.*?gif">"; 4. 5. NSURL *URL = [NSURL URLWithString:@"http://www.weather.com.cn/weather/101010100.shtml"]; 6. NSString *string = [NSString stringWithContentsOfURL:URL encoding:NSUTF8StringEncoding error:nil]; 7. 8. NSRange range = NSMakeRange(0, string.length); 9. 10. NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:pattern options:NSRegularExpressionAnchorsMatchLines|NSRegularExpressionDotMatchesLineSeparators error:nil]; 11. 12. NSArray *matches = [regex matchesInString:string options:0 range:range]; 13. 14. NSRegularExpression *regex1 = [NSRegularExpression regularExpressionWithPattern:pattern1 options:NSRegularExpressionAnchorsMatchLines|NSRegularExpressionDotMatchesLineSeparators error:nil]; 15. 16. NSArray *matches1 = [regex1 matchesInString:string options:0 range:range]; 17. 18. 19. NSMutableString *s = [[NSMutableString alloc]init]; 20. [s appendString: @"<meta charset="utf-8">"]; 21. 22. int i = 0; 23. for (NSTextCheckingResult *match in matches) { 24. NSTextCheckingResult *match1 = [matches1 objectAtIndex:i]; 25. i ++; 26. 27. NSRange matchRange = [match range]; 28. NSRange matchRange1 = [match1 range]; 29. NSLog(@"Reg:%@",[string substringWithRange:matchRange]); 30. 31. [s appendString:[string substringWithRange:matchRange1]]; 32. [s appendString:@"</br>"]; 33. 34. [s appendString:[string substringWithRange:matchRange]]; 35. [s appendString:@"</br>"]; 36. 37. 38. } 39. 40. [self.webview1 loadHTMLString:s baseURL:nil];