regex - 使用正则表达式过滤的 JsonPath 表达式

Question

我们正在使用一个工具，它使用 jayway 库来评估 JSONpath 表达式。 Javascript 似乎不适用于它 .在这种情况下，如何在 JSONPath 中使用正则表达式。例如，在下面的示例中，我想过滤标题中包含“Sword”一词的所有书名:

{
    "store": {
        "book": [
            {
                "category": "reference",
                "author": "Nigel Rees",
                "title": "Sayings of the Century",
                "price": 8.95
            },
            {
                "category": "fiction",
                "author": "Evelyn Waugh",
                "title": "Sword of Honour",
                "price": 12.99
            },
            {
                "category": "fiction",
                "author": "Herman Melville",
                "title": "Moby Dick",
                "isbn": "0-553-21311-3",
                "price": 8.99
            },
            {
                "category": "fiction",
                "author": "J. R. R. Tolkien",
                "title": "The Lord of the Rings",
                "isbn": "0-395-19395-8",
                "price": 22.99
            }
        ],
        "bicycle": {
            "color": "red",
            "price": 19.95
        }
    },
    "expensive": 10
}

Answer 1

Jayway implementation使用 Ruby 正则表达式运算符:

$.store.book[?(@.title =~ /^.*Sword.*$/)]

忽略大小写:

$.store.book[?(@.title =~ /^.*sword.*$/i)]