zoukankan      html  css  js  c++  java
  • web网页动态分享facebook和twitter

    介绍

    facebook分享 http://www.facebook.com/sharer.php?t=${text}u=encodeURIComponent('静态html')
    twitter分享 https://twitter.com/share?text=${text}&url=静态html
    原理,通过调用第三方的分享地址,第三方回调你传的url,解析里面的meta信息,来显示标题图片啥的
    参数text可以忽略,所以就是要解决静态html的问题

    示例静态html

    主要的就是图片,标题,描述。
    site,url啥的随缘填写。
    card和type等都是固定的

    <!doctype html>
    <html lang="en">
    <head>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
      <meta http-equiv="X-UA-Compatible" content="ie=edge">
      
      <!-- twitter分享 -->
      <meta property="twitter:url" content="http://gg.chendahai.cn/static/share/index.html"/>
      <meta name="twitter:title" content="This is title"/>
      <meta name="twitter:description" content="This is desc"/>
      <meta name="twitter:site" content="http://gg.chendahai.cn/static/share/index.html">
      <meta name="twitter:card" content="summary_large_image"/>
      <meta name="twitter:image" content="http://gg.chendahai.cn/static/image/apple.jpg"/>
      
      <!-- facebook分享 -->
      <meta property="og:url" content="http://gg.chendahai.cn/static/share/index.html"/>
      <meta property="og:title" content="This is my plan,let's play together"/>
      <meta property="og:description" content="This is my plan,let's play together"/>
      <meta property="og:image" content="http://gg.chendahai.cn/static/image/apple.jpg"/>
      <meta property="og:type" content="website"/>
      
      <title>share test</title>
    </head>
    <body>
    </body>
    </html>
    

    前提

    有域名,端口号须为80,整个二级域名,nginx转发即可
    比如java.chendahai.cn(80端口转发到5005端口)

      1 server {
      2     listen       80;
      3     server_name  java.chendahai.cn;
      4 
      5     client_max_body_size 20m;
      6 
      7     location / {
      8         proxy_set_header  X-Real-IP $remote_addr;
      9         proxy_set_header  Host   $http_host;
     10         proxy_pass     http://0.0.0.0:5005;
     11     }
     12 
     13 }
    

    调用后端接口,根据参数动态返回html页面

    注意事项

    1. url编码与解码得梳理清楚
    2. twitter分享地址有内容限制,所以参数不能太长。所以直接传meta的标签过去是行不通的,当然也会生成xss漏洞
    3. 先通过静态的页面测试通过之后再一步步往下走

    为了保证接口参数的长度问题,接收参数选择用逗号分隔的字符串。
    后端代码示例基于SpringMVC

        /**
         * facebook和twitter通用的动态分享接口
         *
         * @param meta k,v,k,v 类型的字符串
         * @return html页面
         */
        @RequestMapping(value = "/share/new", produces = "text/html;charset=utf-8")
        public String shareWin(String meta) throws UnsupportedEncodingException {
            // twitter的url需要进行url解码处理
            meta = URLDecoder.decode(meta, "UTF-8");
            String[] split = meta.split(",");
            String metaHtml = "";
            for (int i = 0; i < split.length; i++) {
                metaHtml += "<meta property="" + split[i] + "" name="" + split[i] + "" content="" + split[i + 1] + ""/>
    ";
                i++;
            }
            String retHtml = "<!DOCTYPE html>
    "
                + "<html lang="en">
    "
                + "<head>
    "
                + metaHtml
                + "</head>
    "
                + "<body>
    "
                + "<script type="text/javascript">
    "
                + "	window.location.href="http://java.chendahai.cn/";
    "
                + "</script>"
                + "</body>
    "
                + "</html>";
            System.out.println(retHtml);
            return retHtml;
        }
    

    postman请求返回html例图

    前端示例

    facebook

    调试地址 https://developers.facebook.com/tools/debug/

    let metaArr = [
        'og:url', 'http://java.chendahai.cn',
        'og:title', 'this is title',
        'og:description', 'this is desc',
        'og:image', 'http://gg.chendahai.cn/static/image/apple.jpg',
        'og:type', 'website'
    ]
    let metaParams = metaArr.toString()
    window.open('http://www.facebook.com/sharer.php?u=' + encodeURIComponent(`http://java.chendahai.cn/share/new?meta=${metaParams}`))
    

    twitter

    let metaArr = [
        'twitter:url', 'http://java.chendahai.cn',
        'twitter:site', 'http://java.chendahai.cn',
        'twitter:title', 'this is title',
        'twitter:description', 'this is desc',
        'twitter:card', 'summary_large_image',
        'twitter:image', 'http://gg.chendahai.cn/static/image/pkq.jpg'
    ]
    let metaParams = metaArr.toString()
    // 需要encode两次 因为浏览器会自动decode一次,另一次是服务端会decode
    metaParams = encodeURIComponent(encodeURIComponent(metaParams))
    window.open(`https://twitter.com/share?text=${title}&url=http://java.chendahai.cn/share/new?meta=${metaParams}`)
    

    更多分享可以借鉴
    https://www.cnblogs.com/panlq/articles/9726607.html
    https://www.jianshu.com/p/46851e06329e

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  • 原文地址:https://www.cnblogs.com/chywx/p/13265845.html
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