1.查找字符串中指定字符
String qqBrowser = "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0; QQBrowser/7.7.28658.400) like Gecko";//字符串
String regStr = "QQBrowser";//查找指定字符Pattern pattern = Pattern.compile(regStr);
Matcher matcher = pattern.matcher(qqBrowser);
boolean result = matcher.find();
if(result){
System.out.println("找到QQBrowser字符");
}else{
System.out.println("未找到QQBrowser字符");
}