正则表达式模式去除一些无效的 JSON 元素
感谢您的阅读！
我正在尝试以如下格式解析 JSON 提要：
(bpjc{"menu": {
"id": "file",
"value": "File",
"popup": {
"menuitem": [
{"value": "New", "onclick": "CreateNewDoc()"},
{"value": "Open", "onclick": "OpenDoc()"},
{"value": "Close", "onclick": "CloseDoc()"}
]
}
}})
在解析 JSON 时和使用 JSON 验证器，我认为 (bpjc 和结束的 ) 不是有效的 JSONObject，因此需要将它们从 feed 中删除。
因此，我编写了如下正则表达式：
String regex = "\\(bpjc.*\\)";
String input = "(bpjc{abcd})";
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(input);
System.out.println(matcher.matches());
输出为 true 但如何提取 {abcd} ？
我指的是 正则表达式教程 ，但我不知道哪种模式适用于我的情况。
Thanks for reading!
I am trying to parse a JSON feed in a format like this:
(bpjc{"menu": {
"id": "file",
"value": "File",
"popup": {
"menuitem": [
{"value": "New", "onclick": "CreateNewDoc()"},
{"value": "Open", "onclick": "OpenDoc()"},
{"value": "Close", "onclick": "CloseDoc()"}
]
}
}})
I got error while parsing JSON and after using JSON Validator, I figured that (bpjc and the closing ) is not a valid JSONObject and so need to strip them out from the feed.
So, I wrote a regular expression as below:
String regex = "\\(bpjc.*\\)";
String input = "(bpjc{abcd})";
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(input);
System.out.println(matcher.matches());
The output is true but how do I extract {abcd}?
I am referring the Regular Expressions tutorial but I don't know which pattern applies to my case.
EDIT: Adding the JSON parsing tutorial that I referred. I found it well-explained.
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您似乎得到了格式不正确的 JSONP 结果。如果您知道字符始终会出现在之前和之后，只需执行一个子字符串：
json = json.substring(5, json.length-1)
It seems you are getting an incorrectly formatted JSONP result. If you know the characters are always going to be there before and after, just do a substring:
json = json.substring(5, json.length-1)