我有一个示例Json响应，如下所示
我知道如何使用==或>等比较操作对其进行筛选
例如，我可以使用$.books[?(@.pages > 460)]检索460页以上的书籍，或者类似地使用$.books[?(@.pages != 352)]检索352页以外的书籍
但是我如何过滤这个Json以检索标题包含"；Java"；substring或在2014年发布(实际上也是substring(Json示例为：
{
"books": [
{
"isbn": "9781593275846",
"title": "Eloquent JavaScript, Second Edition",
"subtitle": "A Modern Introduction to Programming",
"author": "Marijn Haverbeke",
"published": "2014-12-14T00:00:00.000Z",
"publisher": "No Starch Press",
"pages": 472,
"description": "JavaScript lies at the heart of almost every modern web application, from social apps to the newest browser-based games. Though simple for beginners to pick up and play with, JavaScript is a flexible, complex language that you can use to build full-scale applications.",
"website": "https://eloquentjavascript.net/"
},
{
"isbn": "9781449331818",
"title": "Learning JavaScript Design Patterns",
"subtitle": "A JavaScript and jQuery Developer's Guide",
"author": "Addy Osmani",
"published": "2012-07-01T00:00:00.000Z",
"publisher": "O'Reilly Media",
"pages": 254,
"description": "With Learning JavaScript Design Patterns, you'll learn how to write beautiful, structured, and maintainable JavaScript by applying classical and modern design patterns to the language. If you want to keep your code efficient, more manageable, and up-to-date with the latest best practices, this book is for you.",
"website": "https://www.addyosmani.com/resources/essentialjsdesignpatterns/book/"
},
{
"isbn": "9781449365035",
"title": "Speaking JavaScript",
"subtitle": "An In-Depth Guide for Programmers",
"author": "Axel Rauschmayer",
"published": "2014-02-01T00:00:00.000Z",
"publisher": "O'Reilly Media",
"pages": 460,
"description": "Like it or not, JavaScript is everywhere these days-from browser to server to mobile-and now you, too, need to learn the language or dive deeper than you have. This concise book guides you into and through JavaScript, written by a veteran programmer who once found himself in the same position.",
"website": "https://speakingjs.com/"
},
{
"isbn": "9781491950296",
"title": "Programming JavaScript Applications",
"subtitle": "Robust Web Architecture with Node, HTML5, and Modern JS Libraries",
"author": "Eric Elliott",
"published": "2014-07-01T00:00:00.000Z",
"publisher": "O'Reilly Media",
"pages": 254,
"description": "Take advantage of JavaScript's power to build robust web-scale or enterprise applications that are easy to extend and maintain. By applying the design patterns outlined in this practical book, experienced JavaScript developers will learn how to write flexible and resilient code that's easier-yes, easier-to work with as your code base grows.",
"website": "https://chimera.labs.oreilly.com/books/1234000000262/index.html"
},
{
"isbn": "9781593277574",
"title": "Understanding ECMAScript 6",
"subtitle": "The Definitive Guide for JavaScript Developers",
"author": "Nicholas C. Zakas",
"published": "2016-09-03T00:00:00.000Z",
"publisher": "No Starch Press",
"pages": 352,
"description": "ECMAScript 6 represents the biggest update to the core of JavaScript in the history of the language. In Understanding ECMAScript 6, expert developer Nicholas C. Zakas provides a complete guide to the object types, syntax, and other exciting changes that ECMAScript 6 brings to JavaScript.",
"website": "https://leanpub.com/understandinges6/read"
},
{
"isbn": "9781491904244",
"title": "You Don't Know JS",
"subtitle": "ES6 & Beyond",
"author": "Kyle Simpson",
"published": "2015-12-27T00:00:00.000Z",
"publisher": "O'Reilly Media",
"pages": 278,
"description": "No matter how much experience you have with JavaScript, odds are you don’t fully understand the language. As part of the 'You Don’t Know JS' series, this compact guide focuses on new features available in ECMAScript 6 (ES6), the latest version of the standard upon which JavaScript is built.",
"website": "https://github.com/getify/You-Dont-Know-JS/tree/master/es6%20&%20beyond"
},
{
"isbn": "9781449325862",
"title": "Git Pocket Guide",
"subtitle": "A Working Introduction",
"author": "Richard E. Silverman",
"published": "2013-08-02T00:00:00.000Z",
"publisher": "O'Reilly Media",
"pages": 234,
"description": "This pocket guide is the perfect on-the-job companion to Git, the distributed version control system. It provides a compact, readable introduction to Git for new users, as well as a reference to common commands and procedures for those of you with Git experience.",
"website": "https://chimera.labs.oreilly.com/books/1230000000561/index.html"
},
{
"isbn": "9781449337711",
"title": "Designing Evolvable Web APIs with ASP.NET",
"subtitle": "Harnessing the Power of the Web",
"author": "Glenn Block, et al.",
"published": "2014-04-07T00:00:00.000Z",
"publisher": "O'Reilly Media",
"pages": 538,
"description": "Design and build Web APIs for a broad range of clients—including browsers and mobile devices—that can adapt to change over time. This practical, hands-on guide takes you through the theory and tools you need to build evolvable HTTP services with Microsoft’s ASP.NET Web API framework. In the process, you’ll learn how design and implement a real-world Web API.",
"website": "https://chimera.labs.oreilly.com/books/1234000001708/index.html"
}
]
}
正如@gregsdennis所说，到目前为止，这完全取决于实现。
在给定的JSONPath实现中，
- 此功能不存在
- 存在
contains()函数或类似函数，
例如，在Jawways语法中：$..[?(@.title contains 'Java')] - 有一个正则表达式功能允许子字符串匹配，
例如，Jayway的Jsonpath有一个=~正则表达式过滤器：$..[?(@.title =~ /.*Java.*?/)] - 转移到过滤器中的脚本评估(JavaScript，在大多数其他主机语言中都不存在(，
例如在Goessner和任何JS实现中：$..[?(@.title && @.title.includes('Java'))]
注意：includes()是一个ES6函数，实际的JSONPath语法也有点特殊
Christoph Burgmer维护了一个很好的JSONPath比较表。
原始JSON路径不能做到这一点，但根据您正在使用的实现，它可能会受到支持。
我们目前正在编写一个正式的规范。其中一个悬而未决的问题是我们想要表达支持的广度。请随意添加评论。一旦规范被定义并发布，我想大多数实现都会更新以遵守。
如果您想使用放心提取值，您可以使用这部分代码来获取所需的值。
.get("/endpooint")
.then()
.extract()
.path("books.find{it.title =~ 'Java'}");
您可以通过以下方式在jsonpath中使用LIKE：
$..[?(@.title like_regex '.*Java.*')]