如何更换||(两个管道)从带有|的字符串中(一)管 [英] How to replace || (two pipes) from a string with | (one) pipe

问题描述

我在此标签中获得了一些json格式的图像的响应:

I am getting response for some images in json format within this tag:

"xmlImageIds":"57948916 || 57948917 || 57948918 || 57948919 || 57948920 || 57948921 || 57948‌ 922 || 57948923 || 57948924 || 57948925 || 57948926 || 5794892"

"xmlImageIds":"57948916||57948917||57948918||57948919||57948920||57948921||57948‌ ​922||57948923||57948924||57948925||57948926||5794892"

我要做的是使用字符串类的.split("||")分隔每个图像ID.然后，将带有此图像ID的网址附加并显示出来.

What i want to do is to separate each image id using .split("||") of the string class. Then append url with this image id and display it.

我已经尝试过 .replace("\" | \"|"，"\" |); ，但它对我不起作用.请帮忙.

I have tried .replace("\"|\"|","\"|"); but its not working for me. Please help.

Shabbir，我试图根据您在下面的评论来更新您的问题.如果我做对的话，请重新编辑.

Shabbir, I tried to update your question according to your comments below. Please edit it again, if I didn't get it right.

推荐答案

使用

.replace("||", "|");

| 不是特殊字符.

但是，如果您使用的是 split()或 replaceAll 而不是 replace()，请注意，您需要对管道符号进行转义为 \\ | ，因为这些方法都使用正则表达式作为参数.

However, if you are using split() or replaceAll instead of replace(), beware that you need to escape the pipe symbol as \\|, because these methods take a regex as parameter.

例如:

public static void main(String[] args) {
    String in = "\"xmlImageIds\":\"57948916||57948917||57948918||57948919||57948920||57948921||57948‌922||57948923||57948924||57948925||57948926||5794892\"".replace("||", "|");

    String[] q = in.split("\"");
    String[] ids = q[3].split("\\|");
    for (String id : ids) {
        System.out.println("http://test/" + id);
    }
}

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