一.場景
在電商項目中產品描述時必不可少的存在，每個不同的項目所需的描述不同，不能一概而論
在產品的描述中的部分數據是我們所需要的，如價格，尺碼表等
如何在不依靠前端的前提下，完成數據的提取就成了問題
二.思路
首先看產品描述的存儲方式：我這邊是直接整個以字符串存儲在表字段中，
盡然是字符串，那我們就能使用Jsoup工具類來獲取Document對象（也可以用其他的方案）
再用getElementById("標簽id")方法獲取標簽對象
因為我這里是直接要標簽對象（包括html標簽）
所以我直接toString()既可，如果是要內部的內容，不要html標簽，就用test()方法
三.需要獲取的結果
三.代碼
/**
* 功能描述: 實現在java中根據字符串中的標簽id獲取對應的標簽對象
*
* @author 王子威
*/
@Test public void extractChart() { // 產品描述：假數據 String desc = "<p align=\"center\"></p>\n" + "<p align=\"center\">啊啊啊啊</p>\n" + "<p align=\"center\"></p>\n" + "<p " + "align=\"center\">\n" + "</p>\n" + "<div id=\"sizechart-template1\">\n" + "<table " + "border=\"1\" style=\"width:800px;margin:10px auto;\">\n" + "<thead> <tr>\n" + "<td " + "style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;" + "\">Size</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;" + "text-align:center;\">Label Size</td>\n" + "<td style=\"font-size:11pt;font-weight:700;" + "font-family:Arial;padding:5px;text-align:center;\">Bust</td>\n" + "<td style=\"font-size" + ":11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Waist</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;" + "\">Length</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;" + "padding:5px;text-align:center;\">Height</td>\n" + "</tr>\n" + "</thead> <tbody>\n" + "<tr>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">100</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">56cm/22.0</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">23cm/9.1</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">11cm/4.3</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">36cm/14.2</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">36cm/14.2</td>\n" + "</tr>\n" + "<tr><td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">100</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">56cm/22.0</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">23cm/9.1</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">11cm/4.3</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">36cm/14.2</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">36cm/14.2</td>\n" + "</tr>\n" + "</tbody>\n" + "</table>\n" + "</div>\n" + "<br />\n" + "<br />\n" + "<div id=\"sizechart-template2\"><table border=\"1\" style=\"width:800px;margin:10px auto;\">\n" + "<tbody>\n" + "<tr>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Size:100</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Label Size:56cm/22.0</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Bust:23cm/9.1</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Waist:11cm/4.3</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Length:36cm/14.2</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Height:36cm/14.2</td>\n" + "</tr>\n" + "<tr>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Size:100</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Label Size:56cm/22.0</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Bust:23cm/9.1</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Waist:11cm/4.3</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Length:36cm/14.2</td>\n" + "<td style=\"font-size:11pt;font-weight:700;font-family:Arial;padding:5px;text-align:center;\">Height:36cm/14.2</td>\n" + "</tr>\n" + "</tbody>\n" + "</table>\n" + "</div>\n" + "<p></p>\n" + "<p align=\"center\"></p>\n" + "<p align=\"center\" style=\"text-align:left;\"></p>\n" + "<p align=\"center\"></p>\n" + "<p align=\"center\"><img src=\"https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fup.enterdesk.com%2Fedpic%2F09%2F3a%2Fbc%2F093abce7b31f4c8ffdbf345375ff4abb.jpg&refer=http%3A%2F%2Fup.enterdesk.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1652421336&t=d2da9a6657364617cdcdbf0aa8e0002e\" /></p>\n" + "<p align=\"center\"></p>\n" + "<p align=\"center\"><p align=\"center\"><img src=\"https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fimg.jj20.com%2Fup%2Fallimg%2F1111%2F04261Q53521%2F1P426153521-1-1200.jpg&refer=http%3A%2F%2Fimg.jj20.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1652421677&t=05a703168ad75e76ce2bddf3b32382dd\" /></p>\n" + "</p>"; // 獲取Document對象 Document doc = Jsoup.parse(desc); // 根據<div>標簽中的id獲取標簽對象 Element elementById1 = doc.getElementById("sizechart-template1"); Element elementById2 = doc.getElementById("sizechart-template2"); // 標簽轉String String a = elementById1.toString(); System.out.println("a = " + a); String b = elementById2.toString(); System.out.println("b = " + b); // 獲取內容 String text = elementById1.text(); System.out.println("text = " + text); }
結果
標簽對象1
標簽對象2
標簽對象內容
