java 使用正则表达式拆分简单的 JSON 结构
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Split a simple JSON structure using a regular expression
提问by Rebeka
I've never used a regex before and I am looking to split up a file that has one or more JSON objects, the JSON objects are not separated by a comma. So I need to split them between "}{" and keep both curly braces. This is what the string looks like:
我以前从未使用过正则表达式，我希望拆分具有一个或多个 JSON 对象的文件，JSON 对象不以逗号分隔。所以我需要在“}{”之间拆分它们并保留两个花括号。这是字符串的样子：
{id:"123",name:"myName"}{id:"456",name:"anotherName"}
I would like a string array like using string.split()
我想要一个像使用的字符串数组 string.split()
["{id:"123",name:"myName"}", "{"id:"456",name:"anotherName"}"]
回答by Denys Séguret
If your objects aren't more complex than what you show, you may use lookaroundslike this :
如果你的对象并不比你展示的更复杂，你可以使用这样的lookarounds：
String[] strs = str.split("(?<=\})(?=\{)");
Exemple :
例子：
String str = "{id:\"123\",name:\"myName\"}{id:\"456\",name:\"yetanotherName\"}{id:\"456\",name:\"anotherName\"}";
String[] strs = str.split("(?<=\})(?=\{)");
for (String s : strs) {
System.out.println(s);
}
prints
印刷
{id:"123",name:"myName"}
{id:"456",name:"anotherName"}
{id:"456",name:"yetanotherName"}
If your objects are more complex, a regex wouldn't probably work and you would have to parse your string.
如果您的对象更复杂，正则表达式可能不起作用，您将不得不解析您的字符串。
