package com.xx.view;import java.util.concurrent.TimeUnit;import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;/*** Created by wj49476 on 2018/3/23.*/public class ScriptDownloader {private static final String urlPrefix = "http://10.0.4.147:8301/jss/crawl/";private String  scriptName;private byte[] jsScriptContent;private int times = 0;public  ScriptDownloader(String scriptNmae){this.scriptName = scriptNmae;}private void get() {final String  url = urlPrefix + scriptName;new Thread(new Runnable() {@Overridepublic void run() {final Request.Builder builder = new Request.Builder();final OkHttpClient client = new OkHttpClient.Builder().readTimeout(30, TimeUnit.SECONDS).connectTimeout(30, TimeUnit.SECONDS).writeTimeout(30, TimeUnit.SECONDS).build(); //设置各种超时时间
                builder.url(url);System.out.println("请求的js脚本url是：" + url);final Request request = builder.build();try (Response response = client.newCall(request).execute()) {jsScriptContent = (response.body().bytes());System.out.println(new String(jsScriptContent));}catch (Exception e){System.out.println("请求脚本出错");e.printStackTrace();}}}).start();}public byte[] getJsScriptContent(){if (times % 5 == 0){get();}times += 1;try{Thread.sleep(1000);}catch (Exception e){e.printStackTrace();}if (jsScriptContent != null){return  jsScriptContent;}else{if (times < 20){return getJsScriptContent();}else{return null;}}}public static void main(String[] args) {byte[] jsConet = new ScriptDownloader("credit/crccReport.js").getJsScriptContent();System.out.println("注入的脚本内容是： " + new String(jsConet));}
}