最近几天我个人写音乐项目时遇到一个小问题,因为需要使用第三方接口的原因,可能会造成 <span class="label bg-danger"> 请求跨域 </span> 的问题 如示: <div class="tip inlineBlock error"> Access to XMLHttpRequest at 'https://haser.top/' from origin 'http://localhost:63343' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. </div> <div class="tip inlineBlock info"> ]这个问题可是耽误了我一段时间啊!!终于后来使用Java的Servlet来解决的 </div> > 大概解决思路: 使用Java的servlet来帮我访问,访问之前加一些响应头,让对方服务器端认为这是个人在访问 方法代码: ```java /** * 地址 * @param postUrl */ public static String GetUrl(String postUrl){ Document doc = null; try { doc = Jsoup.connect(postUrl) .header("Cookie", "__stripe_mid=06986f53-e033-4b1b-8d66-a293c203fa3e; _gcl_au=1.1.1964887636.1583134501; _ga=GA1.2.1122723002.1583134501; _gid=GA1.2.401037423.1583134501; __gads=ID=2d22c788acb05249:T=1583138393:S=ALNI_MbNYbfEpm4Fmb8SPRxoNwCmZxu_Dg; G_ENABLED_IDPS=google") .header("accept","application/json, text/plain, */*") .header("accept-encoding","gzip, deflate, br") .header("accept-language","zh-CN,zh;q=0.9") .header("authorization","0BCmojA2RIMfOo9t3lZDDSklv7sMN8V") .header("content-type","application/json;charset=UTF-8") .header("referer","https://haser.top/") .header("sec-fetch-dest","empty") .header("sec-fetch-mode","cors") .header("sec-fetch-site","same-site") .header("user-agent","Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.36") .timeout(60000) .ignoreContentType(true) .post(); } catch (IOException e) { e.printStackTrace(); } System.out.println(doc); return doc.toString(); } ``` Servlet代码: ```java if (req.getParameter("url")!=null){ String url = req.getParameter("url"); String str = GetUrl(url); str = Methods.delHtmlTags(str); Object json = JSON.toJSON(str);//转为json格式 response.setContentType("text/json;charset=utf-8");//浏览器响应为json PrintWriter writer = response.getWriter(); writer.println(json);//输出 } ``` js代码:(Servlet路径?url=之前跨域的地址)  <div class="tip inlineBlock success"> 到最后这个问题就完美解决了 </div> > PS:源码因为某些原因就不放出来了,有需要的可以联系我 Last modification：June 16, 2021 © Allow paid reprint Support Appreciate the author AliPayWeChat Like 请我喝一瓶农夫山泉嘛？
