最近在网上看了些
JSONPath
的入门例子。打算用Snack3
这个框架写写例子。json path
对`JSON的处理绝对是神器。
1.准备JSON字符串
{
"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,
"isbn": "0-553-21311-3"
}],
"bicycle": {
"color": "red",
"price": 19.95
}
}
}
2.Meven 依赖
<dependency>
<groupId>org.noear</groupId>
<artifactId>snack3</artifactId>
<version>3.1.5.9</version>
</dependency>
3.示例代码
@Test
public void demo1() {
String json = "{"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,"isbn":"0-553-21311-3"}],"bicycle":{"color":"red","price":19.95}}}";
ONode n = ONode.load(json);
Map map = n.select("$.store.book[0]").toObject(Map.class);
System.out.println("category: " + map.get("category"));
System.out.println("author: " + map.get("author"));
System.out.println("title: " + map.get("title"));
System.out.println("price: " + map.get("price"));
System.out.println("========================");
List<String> list = n.select("$.store.book[*].author").toObject(List.class);
for (String author : list) {
System.out.println(author);
}
//java bean 泛型输出,此处不打印了
List<BookModel> list2 = n.select("$.store.book")
.toObject((new ArrayList<BookModel>(){}).getClass());
}
4.控制台打印结果
category: reference
author: Nigel Rees
title: Sayings of the Century
price: 8.95
========================
Nigel Rees
Evelyn Waugh