从Java请求提取变量

Question

因此，我有一个工具，可以将API扫描以进行更改。如果他找到了一个更改，他会得到一个类似：

的弦。

word=donu2019t item-id="1086">n        <span class=

我想从 item-id提取数字，但是响应中有多个数字。

有可能做到这一点吗？（我也不知道数字是4位数字还是1-2）

因此，正则应搜索诸如"数字"之类的东西并打印它。（对于Java）

Answer 1

基于您的评论，看起来您正在收到JSON结构

{
    ...
    "data":{
        "html":".. <a .. data-sku="XXX"> ..",
        ...
    }
    ...
}

您对data-sku属性的值感兴趣。

在这种情况下，解析JSON并穿越它以获得HTML结构。您可以使用org.json.JSONObject（或其他解析器，选择您喜欢的一个）

String response = "{"success":1,"data":{"html":"<div class=\"inner\">\n      <span class=\"title js-title-eligible\">Upgrade available<\/span>\n    <span class=\"title js-title-warning\"><strong>WARNING :<\/strong> You don\u2019t own a <span class=\"js-from-ship\"><\/span><\/span>\n        <p class=\"explain js-title-eligible\">Buy this upgrade and it will be applicable to your <span class=\"js-from-ship\"><\/span> from the My Hangar section.<\/p>\n    <p class=\"explain js-title-warning\">You can buy this upgrade but it will only be applicable on a <span class=\"js-from-ship\"><\/span>.<\/p>\n\n    <div class=\"price\"><strong class=\"final-price\">\u20ac5<span class='super'>.41 <span class='currency'>EUR<\/span><\/span><\/strong><div class=\"taxes js-taxes\">\n  <div class=\"taxes-details trans-02s\">\n    <div class=\"arrow\"><\/div>\n    Tax Included: <br \/>\n    <ul>\n        <li>VAT 19%<\/li>\n        <\/ul>\n  <\/div>\n<\/div><\/div>\n\n\n    <div>\n      <a href=\"\/pledge\/Upgrades\/Mustang-Alpha-To-Aurora-LN-Upgrade\" class=\"add-to-cart holosmallbtn trans-03s js-add-to-cart-ship ty-js-add-to-cart\" data-sku=\"1086\">\n        <span class=\"holosmallbtn-top abs-overlay trans-02s\">BUY NOW<\/span>\n        <span class=\"holosmallbtn-bottom abs-overlay trans-02s\"><\/span>\n      <\/a>\n      <a href=\"\/pledge\/Upgrades\/Mustang-Alpha-To-Aurora-LN-Upgrade\" class=\"more-details\">View more details<\/a>\n    <\/div>\n    \n    <p class=\"explain info\">\n      Upgrades that you buy can be found in your <a href=\"\/account\/pledges\">Hangar section<\/a>.<br \/>\n      Click \"Apply Upgrade\" inside the Upgrade Pledge to pick where you want to apply it.\n    <\/p>\n  <\/div>\n\n\n\n"},"code":"OK","msg":"OK"}";
JSONObject jsonObject = new JSONObject(response);
String html = jsonObject.getJSONObject("data") //pick data:{...} object
                        .getString("html");    //from that object get value of html:"..."

现在您有html，您可以使用HTML解析器（我正在使用JSOUP）

对其进行解析。

Document doc = Jsoup.parse(html);
String dataSku = doc.select("a[data-sku]") //get "a" element with "data-sku" attribute
                    .attr("data-sku");     //value of that attribute

输出： 1086。

Answer 2

    String string = "{"success":1,"data":{"html":"<div class=\"inner\">\n      <span class=\"title js-title-eligible\">Upgrade available<\/span>\n    <span class=\"title js-title-warning\"><strong>WARNING :<\/strong> You don\u2019t own a <span class=\"js-from-ship\"><\/span><\/span>\n        <p class=\"explain js-title-eligible\">Buy this upgrade and it will be applicable to your <span class=\"js-from-ship\"><\/span> from the My Hangar section.<\/p>\n    <p class=\"explain js-title-warning\">You can buy this upgrade but it will only be applicable on a <span class=\"js-from-ship\"><\/span>.<\/p>\n\n    <div class=\"price\"><strong class=\"final-price\">\u20ac5<span class='super'>.41 <span class='currency'>EUR<\/span><\/span><\/strong><div class=\"taxes js-taxes\">\n  <div class=\"taxes-details trans-02s\">\n    <div class=\"arrow\"><\/div>\n    Tax Included: <br \/>\n    <ul>\n        <li>VAT 19%<\/li>\n        <\/ul>\n  <\/div>\n<\/div><\/div>\n\n\n    <div>\n      <a href=\"\/pledge\/Upgrades\/Mustang-Alpha-To-Aurora-LN-Upgrade\" class=\"add-to-cart holosmallbtn trans-03s js-add-to-cart-ship ty-js-add-to-cart\" data-sku="1086\">\n        <span class=\"holosmallbtn-top abs-overlay trans-02s\">BUY NOW<\/span>\n        <span class=\"holosmallbtn-bottom abs-overlay trans-02s\"><\/span>\n      <\/a>\n      <a href=\"\/pledge\/Upgrades\/Mustang-Alpha-To-Aurora-LN-Upgrade\" class=\"more-details\">View more details<\/a>\n    <\/div>\n    \n    <p class=\"explain info\">\n      Upgrades that you buy can be found in your <a href=\"\/account\/pledges\">Hangar section<\/a>.<br \/>\n      Click \"Apply Upgrade\" inside the Upgrade Pledge to pick where you want to apply it.\n    <\/p>\n  <\/div>\n\n\n\n"},"code":"OK","msg":"OK"}";
    String pattern="(?<=data-sku=)([\\]*")(\d+)";
    Pattern p = Pattern.compile(pattern);
    Matcher matcher = p.matcher(string);
     while (matcher.find()) {
            System.out.print("Start index: " + matcher.start());
            System.out.println(" End index: " + matcher.end() + " ");
            System.out.println("number="+matcher.group(2));
        }