最近在網上看了些JSONPath的入門例子。打算用Snack3這個框架寫寫例子。json path對`JSON的處理絕對是神器。

1.準備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 依賴

org.noear

snack3

3.1.5.3

3.示例代碼

@Test

public void demo1() {

String json = "...//把剛才的JSON字符串放這兒";

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 list = n.select("$.store.book[*].author").toObject(List.class);

for (String author : list) {

System.out.println(author);

}

//java bean 泛型輸出，此處不打印了

List list2 = n.select("$.store.book")

.toObject((new ArrayList(){}).getClass());

}

4.控制臺打印結果

category: reference

author: Nigel Rees

title: Sayings of the Century

price: 8.95

========================

Nigel Rees

Evelyn Waugh

總結

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