正则表达式&&Java文本复杂操作

public class Demo01 {
    public static void main(String[] args) {
        
        //表达式对象
        Pattern p = Pattern.compile("\\w+");
        
        //创建Matcher对象
        Matcher m  = p.matcher("asfsdf&23323");
        
        boolean flag = m.matches(); //尝试将整个字符序列与该模式匹配
        
        boolean flag2 = m.find(); //该方法扫描输入的序列，查找与该模式匹配的下一个子序列
        
        String str = m.group(); //返回找到的字符串
        
        String newStr = m.replaceAll("#");///替换
        
        String str2 = "asds234adsa23sdsf";
        String[] arrs = str2.split("\\d+");
        System.out.println(Arrays.toString(arrs));
        
    }
}

/**
 * 简单网络爬虫
 * @author MA
 *
 */
public class WebSpiderTest {
    
    public static String getURLContent(String urlStr,String charSet) throws IOException{
        StringBuilder sb = new StringBuilder();
        try {
            URL url = new URL(urlStr);
            BufferedReader reader =new BufferedReader(new InputStreamReader(url.openStream(),Charset.forName(charSet)));
            String temp = "";
            while((temp=reader.readLine())!=null){
                //System.out.println(temp);
                sb.append(temp);
            }
        } catch (MalformedURLException e) {
            
            e.printStackTrace();
        }
        return sb.toString();
    }
    
    public static List getMatherSubstrs(String destStr,String regexStr){
        //Pattern p = Pattern.compile("");//取到超链接整个内容
        Pattern p = Pattern.compile(regexStr);//取到超链接地址 
        Matcher m = p.matcher(destStr);
        List result =new ArrayList();    
        while(m.find()){
            result.add(m.group(1));
        }
        return result;
    }
    public static void main(String[] args) throws Exception {
        
        String destStr = getURLContent("http://www.163.com","gbk");
        
        List result = getMatherSubstrs(destStr, "href=\"([\\w\\s./:]+?)\"");
        
        for(String temp : result){
            System.out.println(temp);
        }
    }
}