jsonpath语法的基本应用

20_解析_jsonpath.json

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+{ "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
+    }
+  }
+}

20_解析_jsonpath.py

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+
+
+import json
+import jsonpath
+
+# 书店所有书的作者
+obj = json.load(open('20_解析_jsonpath.json', 'r', encoding='utf-8'))
+# print(obj)
+# book后面有个通配符*用来表示所有书，若为0表示第一本书，以此类推。
+# author_list = jsonpath.jsonpath(obj, '$.store.book[*].author')
+
+
+# # 所有的作者 注意和上面的区别
+# author_list = jsonpath.jsonpath(obj, '$..author')
+
+
+# print(author_list)
+
+# store下面的所有元素
+# tag_list = jsonpath.jsonpath(obj, '$.store.*')
+# print(tag_list)
+
+# store所有东西的price
+# price_list = jsonpath.jsonpath(obj, '$.store..price')
+# print(price_list)
+
+# 第三本书
+# book = jsonpath.jsonpath(obj, '$..book[2]')
+# print(book)
+
+# 最后一本书
+# book = jsonpath.jsonpath(obj, '$..book[(@.length-1)]')
+# print(book)
+
+# 前两本书
+# book_list = jsonpath.jsonpath(obj, '$..book[0,1]')
+# book_list = jsonpath.jsonpath(obj, '$..book[:2]')
+# print(book_list)
+
+# 条件过滤需要在()前面添加?
+# 过滤出所有包含版本号isbn的书
+# book_list = jsonpath.jsonpath(obj, '$..book[?(@.isbn)]')
+# print(book_list)
+
+# 哪本书超过了10块
+book_list = jsonpath.jsonpath(obj, '$..book[?(@.price>10)]')
+print(book_list)