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import java.io.File;

import java.io.IOException;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

import java.nio.file.Files;

import java.nio.file.Path;

import java.util.ArrayList;

import java.util.List;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

/**

* Created by JohnTsai on 16/1/27.

*/

public class UrlValidate {

private String fileName;

public UrlValidate(String fileName){

this.fileName = fileName;

}

public String readFile(String fileName){

File file = new File(fileName);

Path path = file.toPath();

String str = null;

try {

str = new String(Files.readAllBytes(path));

} catch (IOException e) {

e.printStackTrace();

}

return str;

}

public List<String> getStringByRegex(String str, String patternStr){

List<String> list = new ArrayList<>();

Pattern pattern = Pattern.compile(patternStr);

Matcher matcher = pattern.matcher(str);

while (matcher.find()){

list.add(matcher.group());

}

return list;

}

public Boolean checkValidate(String urlStr){

try {

URL url = new URL(urlStr);

HttpURLConnection connection = (HttpURLConnection) url.openConnection();

connection.setRequestMethod("GET");

connection.setConnectTimeout(3*1000);

connection.setReadTimeout(30*1000);

connection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.29 Safari/537.36");

connection.connect();

int code = connection.getResponseCode();

System.out.println("responseCode:--->"+code);

return code>=200&&code<400;

} catch (IOException e) {

System.out.println("fail...");

e.printStackTrace();

return false;

}

}

public void checkValidate(){

System.out.println("-----start checking------");

String readme = readFile(this.fileName);

List<String> urlList = getStringByRegex(readme,"\\(http.*?\\)");

List<String> failList = new ArrayList<>();

for(String string:urlList){

String replace = string.replace("(", "").replace(")","");

System.out.println("checking..."+replace);

if(checkValidate(replace)==false)

failList.add(replace);

}

if(failList.size()==0)

System.out.println("All sites are available");

else{

System.out.println("--------------------\nSites not available:");

for(String site:failList){

System.out.println(site);

}

}

}

public static void main(String[] args){

UrlValidate urlValidate = new UrlValidate("./README.md");

urlValidate.checkValidate();

}

}