JSON返回字符串的写法

太过爱你忘了你带给我的痛 2022-10-06 00:53 218阅读 0赞

JSON的全称是JavaScript Object Notation，即JavaScript对象符号，它是一种轻量级、跨平台、跨语言的数据交换格式，其设计意图是把所有事情都用设计的字符串来表示，这样既方便在互联网上传递信息，也方便人进行阅读。

JSON主要有两种数据结构：

*  由kye-value对组成的数据结构。这种数据结构在不同的语言中有不同的实现。例如在Python中是一种dict对象；在C语言中是一个struct；在其他语言中，则可能是record等。
 *  有序集合。这种数据结构在Python中对应于列表list；在其他语言中，可能对应于list等。

# kye-value对组成的数据结构（对应Python中字典dict） #

方法一：

data = {
        }
        result_data = {
        }
        data['name'] = 'John'
        data['age'] = 15
        result_data['result'] = 'OK'
        result_data['message'] = 'success'
        result_data['data'] = data
        s = json.dumps(result_data)
        print(type(s), s)

![在这里插入图片描述][20210610143250765.png]

方法二：

s1 = '{"result":"OK", "message":"success", "data":{"name":"jone", "age":"15"}}'
        print(type(s1), s1)
        response = json.loads(s1)
        print(response)

![在这里插入图片描述][20210610143309717.png]

# 有序集合（对应Python中列表list） #

book_list1 = [{
        'imgs_name':['1_1.jpg', '1_2.jpg', '1_3.jpg'], 'imgs_w':[1080, 720, 640], 'imgs_h':[1440, 1080, 640]}, {
        'imgs_name':['1_1.jpg', '1_2.jpg', '1_3.jpg'], 'imgs_w':[1080, 720, 640], 'imgs_h':[1440, 1080, 640]}]
        print('book_list1(list->json):', type(book_list1), book_list1)
        book_json1 = json.dumps(book_list1)
        print('book_json1(list->json):', type(book_json1), book_json1)
        # not the same
        #book_json2 = '[{"imgs_name":["1_1.jpg","1_2.jpg","1_3.jpg"],"imgs_w":["1080","720","640"],"imgs_h":["1440","1080","640"]},{"imgs_name":["1_1.jpg","1_2.jpg","1_3.jpg"],"imgs_w":["1080","720","640"],"imgs_h":["1440","1080","640"]}]'
        # not the same 
        #book_json2 = '[{"imgs_name": ["1_1.jpg", "1_2.jpg", "1_3.jpg"], "imgs_w": ["1080", "720", "640"], "imgs_h": ["1440", "1080", "640"]}, {"imgs_name": ["1_1.jpg", "1_2.jpg", "1_3.jpg"], "imgs_w": ["1080", "720", "640"], "imgs_h": ["1440", "1080", "640"]}]'
        # same
        book_json2 = '[{"imgs_name": ["1_1.jpg", "1_2.jpg", "1_3.jpg"], "imgs_w": [1080, 720, 640], "imgs_h": [1440, 1080, 640]}, {"imgs_name": ["1_1.jpg", "1_2.jpg", "1_3.jpg"], "imgs_w": [1080, 720, 640], "imgs_h": [1440, 1080, 640]}]'
        # shell input format
        #book_json_input = [{\"imgs_name\":[\"1_1.jpg\",\"1_2.jpg\",\"1_3.jpg\"],\"imgs_w\":[\"1080\",\"720\",\"640\"],\"imgs_h\":[\"1440\",\"1080\",\"640\"]},{\"imgs_name\":[\"1_1.jpg\",\"1_2.jpg\",\"1_3.jpg\"],\"imgs_w\":[\"1080\",\"720\",\"640\"],\"imgs_h\":[\"1440\",\"1080\",\"640\"]}]
        print('book_json2(json->list):', type(book_json2), book_json2)
        book_list2 = json.loads(book_json2)
        print('book_list2(json->list):', type(book_list2), book_list2)
        print('book_list2[0](json->list):', book_list2[0])
    
        from difflib import Differ
        d = Differ()
        diff = d.compare(book_json1.splitlines(), book_json2.splitlines())
        print('\n'.join(list(diff)))
        if book_json1 == book_json2:
            print('book_json1 and book_json2 is the same!')
        else:
            print('book_json1 and book_json2 is not the same!')

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N0dWR5ZWJveQ_size_16_color_FFFFFF_t_70]

[20210610143250765.png]: /images/20221005/b66b110c2aa14d659de5d2d644564b69.png
[20210610143309717.png]: /images/20221005/0c5ef6ef4c8a43048e85edcfa8fe791b.png
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