java is determined whether or not the content including the URL

1. Scope
country, this code only for the domestic domain name, the domain name is needed if the country in other countries to modify some code, that is, increase the value of countryList, refer to the URL: https: //help.aliyun.com/knowledge_detail/35751. Concept #-LRQ-HTML-B2B VBD
2. Code

	public static void main(String[] args) {
		//调用
		boolean url_b = judge(content);
		if (url_b) {
			System.out.println("含url");
		}else {
			System.out.println("不含url");
		}
	}
	public static boolean judge(String content) {
		boolean url_b = false;
		if (content.indexOf("http:")>-1 || content.indexOf("https:")>-1) {
			url_b = true;
		}else if (content.indexOf("HTTP:")>-1 || content.indexOf("HTTPS:")>-1) {
			url_b = true;
		}else if(content.indexOf(".") > 0) {

			Map<Character, String> keywordMindMap = new HashMap<Character, String>();
//			char[] teshus = "-_.~!*'();:@&=+$,/?#[]".toCharArray();
			char[] teshus = "-.:/".toCharArray();
			for (int i = 0; i < teshus.length; i++) {
				Character one = teshus[i];
				keywordMindMap.put(one, "");
			}
			
			List<String> countryList = new ArrayList<>();
			countryList.add(".hk");//中国香港
			countryList.add(".tw");//中国台湾
			countryList.add(".mo");//中国澳门
			countryList.add(".edu");//教育机构
			countryList.add(".gov");//政府部门
			countryList.add(".int");//国际组织
			countryList.add(".mil");//美国军事部门
			countryList.add(".net");//网络组织
			countryList.add(".org");//非盈利组织
			countryList.add(".biz");//商业
			countryList.add(".info");//网络信息服务组织
			countryList.add(".pro");//用于会计、律师和医生
			countryList.add(".name");//用于个人
			countryList.add(".museum");//用于博物馆
			countryList.add(".coop");//用于商业合作团体
			countryList.add(".aero");//用于航空工业
			countryList.add(".xxx");//用于成人、色情网站
			countryList.add(".idv");//用于个人
			
			
			char[] contents = content.toCharArray(); //把字符中转换为字符数组
			int dian_index = content.indexOf(".");
			if (dian_index>0) {
				all:
				for (int i = dian_index,len=contents.length; i < len; i++) {
					char one = contents[i];
					if (one == '.') {
						String url = ".";
						boolean email_b = false;//是否为邮箱  true:是
						//前
						for (int beforeI = i-1; beforeI>=0; beforeI--) {
							char beforeOne = contents[beforeI];
							if((beforeOne >='a' && beforeOne<='z') 
									|| (beforeOne >='A' && beforeOne<='Z')
									|| (beforeOne >='0' && beforeOne<='9')
									|| keywordMindMap.get(beforeOne) != null
									){
//								System.out.println("beforeOne="+beforeOne);
								url = beforeOne+url;
							}else if(beforeOne =='@'){//邮箱
								email_b = true;
								break;
							}else {
								break;
							}
						}
						
						if (!email_b) {
							//后
							for (int lastI = i+1; lastI<len; lastI++) {
								char lastOne = contents[lastI];
								if((lastOne >='a' && lastOne<='z') 
										|| (lastOne >='A' && lastOne<='Z')
										|| (lastOne >='0' && lastOne<='9')
										|| keywordMindMap.get(lastOne) != null
										){
									url = url+lastOne;
									
									i = lastI;//不遍历多次
								}else {
									break;
								}
							}
							
							url = url.toLowerCase();//都变小写
							if (url.indexOf("http:")>-1 || url.indexOf("https:")>-1) {
								url_b = true;
								break;
							}else {
								if ((url.indexOf(".com/")>0 || url.endsWith(".com")) && url.length()>4) {
									url_b = true;
									break;
								}
								if ((url.indexOf(".cn/")>0 || url.endsWith(".cn")) && url.length()>3) {
									url_b = true;
									break;
								}
								for (int j = 0; j < countryList.size(); j++) {
									String countryNet = countryList.get(j);
									if ((url.indexOf(countryNet+"/")>0 || url.endsWith(countryNet)) && url.length()>countryNet.length()) {
										url_b = true;
										break all;
									}
								}
//								System.out.println("url="+url);
								String[] xie_gangArray = {url};
								if (url.indexOf("/")>-1) {
									xie_gangArray = url.split("/");
								}
								
								for (int j2 = 0; j2 < xie_gangArray.length; j2++) {
									String urlNew = xie_gangArray[j2];
									if (urlNew.indexOf(".")>-1) {//判断是否为ip
										int two = urlNew.indexOf(":");
										if (two>-1) {
											urlNew = urlNew.substring(0,two);
										}
										urlNew = urlNew.trim();
//										System.out.println("urlNew="+urlNew);
										//判断一个字符串是不是IP地址
										boolean isIP_b = isIPAddress(urlNew);
										if (isIP_b) {
											
											url_b = true;
											break all;
										}
										
									}
								}
								
							}
						}
						
						
						
					}
				}
			}
			
		}
		return url_b;
	}
	
	
	/**
	 * 判断一个字符串是不是IP地址
	 * 
     *    字符串的长度 0.0.0.0 7位 ~ 000.000.000.000 15位
     *    将字符串拆分成四段
     *    检查每段是否都是纯数字
     *    检查每段是否都在0-255之间
     *    以上条件都满足的话返回true
     */
    public static boolean isIPAddress(String str) {
        // 如果长度不符合条件 返回false
        if(str.length()<7 || str.length() >15) {
        	return false;
        }
        String[] arr = str.split("\\.");
        //如果拆分结果不是4个字串 返回false
        if( arr.length != 4 ) {
        	return false;
        }
        for(int i = 0 ; i <4 ; i++ ){
            for(int j = 0; j<arr[i].length();j++){
                char temp = arr[i].charAt(j);
                //如果某个字符不是数字就返回false
                if(temp>='0' && temp <= '9') { 
                	
                }else {
                	return false;
                }
            }
        }
        for(int i = 0 ; i<4;i++){
            int temp = Integer.parseInt(arr[i]);
            //如果某个数字不是0到255之间的数 就返回false
            if( temp<0 || temp >255) {
            	return false;
            }
        }
        return true;
    }