如何从文件中删除特定字符？

Question

我有这种格式的JSON文件;

[{
"item-id" : "0",
"item-name" : "Dwarf remains",
"item-examine" : "The body of a Dwarf savaged by Goblins.",
"shop-value" : "0.0",
"low-alch" : "0.0",
"high-alch" : "0.0",
"stab-bonus" : "0",
"slash-bonus" : "0",
"crush-bonus" : "0",
"magic-bonus" : "0",
"ranged-bonus" : "0",
"stab-defence" : "0",
"slash-defence" : "0",
"crush-defence" : "0",
"magic-defence" : "0",
"ranged-defence" : "0",
"strength-bonus" : "0",
"prayer-bonus" : "0",
},
{
"item-id" : "1",
"item-name" : "Toolkit",
"item-examine" : "Good for repairing a broken cannon.",
"shop-value" : "0.0",
"low-alch" : "0.0",
"high-alch" : "0.0",
"stab-bonus" : "0",
"slash-bonus" : "0",
"crush-bonus" : "0",
"magic-bonus" : "0",
"ranged-bonus" : "0",
"stab-defence" : "0",
"slash-defence" : "0",
"crush-defence" : "0",
"magic-defence" : "0",
"ranged-defence" : "0",
"strength-bonus" : "0",
"prayer-bonus" : "0",
}]

但有25 000个条目

但是在文件中有一些错误;

"prayer-bonus" : "0",

应该是

"prayer-bonus" : "0"

我如何使用正则表达式或其他只替换最后一位？

我正在使用java。

顺便说一下：值并不总是“0”

那我怎么能把它变成一个通配符所以它取代所有呢？

Answer 1

使用sed：

sed -i.bak 's/\("prayer-bonus" : "0"\),/\1/' file

匹配任何数字：

sed -i.bak 's/\("prayer-bonus" : "[0-9]*"\),/\1/' file

Answer 2

看起来您可能正在尝试修补由不正确形成的JSON blob引起的问题。您可以采用其他响应者使用sed来解决这些症状的答案，但问题在于如何创建JSON。

Answer 3

任何文本编辑器都可以解决问题。

或者你可以从java调用字符串替换。不需要正则表达式。

Answer 4

你可以使用它（用java风格编写，与replaceAll()方法一起使用）：

search: (?<!\\\\)(\"(?>[^\\\"]++|\\\\{2}|\\\\.)*+\"),(\\s*+})
replace: $1$2

这种模式的主要兴趣在于避免使用可能在引号内的双引号转义。

示例：

String pattern = "(?<!\\\\)(\"(?>[^\\\"]++|\\\\{2}|\\\\.)*+\"),(\\s*+})";
String result = yourJson.replaceAll(pattern, "$1$2");