python实现对json进行压缩处理

1、python实现对json进行压缩处理

网络带宽有限，python如何对大的json内容进行压缩，减少网络带宽。
可以先对Json字符串进行压缩，然后进行base64编码

# -*- coding:utf-8 -*-
import base64           # 导入 base64 模块
import gzip             # 导入 gzip 模块
import json             # 导入 json 模块
from io import BytesIO  # 从 io 模块导入 BytesIO 类

# 定义一个函数，将字符串压缩为 gzip 格式，并进行 base64 编码后返回结果
def gzip_str(to_gzip: str) -> str:
    out = BytesIO()                         # 创建一个 BytesIO 对象
    with gzip.GzipFile(fileobj=out, mode='w') as f:   # 使用 gzip 对象进行数据压缩
        f.write(to_gzip.encode())            # 将待压缩的字符串写入 gzip 对象中
    return base64.b64encode(out.getvalue()).decode()   # 对压缩后的数据使用 base64 编码并返回结果


# 定义一个函数，输入参数为经过压缩和 base64 编码后的字符串，输出参数为解压缩并解码后的字符串
def ungzip_str(to_ungzip: str) -> str:
    compressed = base64.b64decode(to_ungzip)   # 先对输入字符串进行 base64 解码，再将已压缩的数据转换为 bytes 格式
    with gzip.GzipFile(fileobj=BytesIO(compressed)) as f:  # 使用 GzipFile 对象读取已编码的二进制对象，并解压缩该对象
        return f.read().decode()   # 返回解压缩后的数据，要注意先用 decode 将 bytes 对象转换为字符串格式

2、测试小的json字符串压缩

def testFunc1():
    # 创建一个字典
    dataDict = {"name": "John", "age": 30, "hobby": "mountaineering"}

    # 将字典转换为JSON字符串
    jsonStr = json.dumps(dataDict)

    # 打印JSON字符串
    print("原始json字符串：", jsonStr)
    print("原始json字符串长度：", len(jsonStr))
    zipStr = gzip_str(jsonStr)
    print("压缩编码后的json字符串：", zipStr)
    print("压缩编码后的json字符串长度：", len(zipStr))
    unzipStr = ungzip_str(zipStr)
    print("解压缩后的json字符串：", unzipStr)
    print("解压缩后的json字符串长度：", len(unzipStr))
    if jsonStr == unzipStr:
        print("源字符串和解压后的字符串相同")
    else:
        print("源字符串和解压后的字符串不同")

if __name__ == '__main__':
    testFunc1()

输出结果：

原始json字符串： {"name": "John", "age": 30, "hobby": "mountaineering"}
原始json字符串长度： 54
压缩编码后的json字符串： H4sIAPTPR2QC/6tWykvMTVWyUlDyys/IU9JRUEpMB3GNDYDMjPykpEqQXG5+aV5JYmZeampRZl66Ui0AFHbDMTYAAAA=
压缩编码后的json字符串长度： 92
解压缩后的json字符串： {"name": "John", "age": 30, "hobby": "mountaineering"}
解压缩后的json字符串长度： 54
源字符串和解压后的字符串相同

压缩前字符串长度54，压缩后92，说明 小字符串压缩后再进行base64编码，长度更长，没有压缩的意义

3、测试大的json字符串压缩

def testFunc2():
    with open('wine.json', 'r', encoding='utf-8') as f:
        jsonData = json.load(f)  # 映射规则

    jsonStr = json.dumps(jsonData)

    # 打印JSON字符串
    print("原始json字符串：", jsonStr)
    print("原始json字符串长度：", len(jsonStr))
    zipStr = gzip_str(jsonStr)
    print("压缩编码后的json字符串：", zipStr)
    print("压缩编码后的json字符串长度：", len(zipStr))
    unzipStr = ungzip_str(zipStr)
    print("解压缩后的json字符串：", unzipStr)
    print("解压缩后的json字符串长度：", len(unzipStr))
    if jsonStr == unzipStr:
        print("源字符串和解压后的字符串相同")
    else:
        print("源字符串和解压后的字符串不同")

if __name__ == '__main__':
    testFunc2()

控制台输出：

原始json字符串： [{"alcohol": 14.23, "malic_acid": 1.71, "ash": 2.43, "alcalinity_of_ash": 15.6, "magnesium": 127.0, "total_phenols": 2.8, "flavanoids": 3.06, "nonflavanoid_phenols": 0.28, "proanthocyanins": 2.29, "color_intensity": 5.64, "hue": 1.04, "od280/od315_of_diluted_wines": 3.92, "proline": 1065.0, "target": 0}, {"alcohol": 13.2, "malic_acid": 1.78, "ash": 2.14, "alcalinity_of_ash": 11.2, "magnesium": 100.0, "total_phenols": 2.65, "flavanoids": 2.76, "nonflavanoid_phenols": 0.26, "proanthocyanins": 1.28, "color_intensity": 4.38, "hue": 1.05, "od280/od315_of_diluted_wines": 3.4, "proline": 1050.0, "target": 0}, {"alcohol": 13.16, "malic_acid": 2.36, "ash": 2.67, "alcalinity_of_ash": 18.6, "magnesium": 101.0, "total_phenols": 2.8, "flavanoids": 3.24, "nonflavanoid_phenols": 0.3, "proanthocyanins": 2.81, "color_intensity": 5.68, "hue": 1.03, "od280/od315_of_diluted_wines": 3.17, "proline": 1185.0, "target": 0}, {"alcohol": 14.37, "malic_acid": 1.95, "ash": 2.5, "alcalinity_of_ash": 16.8, "magnesium": 113.0, "total_phenols": 3.85, "flavanoids": 3.49, "nonflavanoid_phenols": 0.24, "proanthocyanins": 2.18, "color_intensity": 7.8, "hue": 0.86, "od280/od315_of_diluted_wines": 3.45, "proline": 1480.0, "target": 0}, {"alcohol": 13.24, "malic_acid": 2.59, "ash": 2.87, "alcalinity_of_ash": 21.0, "magnesium": 118.0, "total_phenols": 2.8, "flavanoids": 2.69, "nonflavanoid_phenols": 0.39, "proanthocyanins": 1.82, "color_intensity": 4.32, "hue": 1.04, "od280/od315_of_diluted_wines": 2.93, "proline": 735.0, "target": 0}, {"alcohol": 14.2, "malic_acid": 1.76, "ash": 2.45, "alcalinity_of_ash": 15.2, "magnesium": 112.0, "total_phenols": 3.27, "flavanoids": 3.39, "nonflavanoid_phenols": 0.34, "proanthocyanins": 1.97, "color_intensity": 6.75, "hue": 1.05, "od280/od315_of_diluted_wines": 2.85, "proline": 1450.0, "target": 0}, {"alcohol": 14.39, "malic_acid": 1.87, "ash": 2.45, "alcalinity_of_ash": 14.6, "magnesium": 96.0, "total_phenols": 2.5, "flavanoids": 2.52, "nonflavanoid_phenols": 0.3, "proanthocyanins": 1.98, "color_intensity": 5.25, "hue": 1.02, "od280/od315_of_diluted_wines": 3.58, "proline": 1290.0, "target": 0}, {"alcohol": 14.06, "malic_acid": 2.15, "ash": 2.61, "alcalinity_of_ash": 17.6, "magnesium": 121.0, "total_phenols": 2.6, "flavanoids": 2.51, "nonflavanoid_phenols": 0.31, "proanthocyanins": 1.25, "color_intensity": 5.05, "hue": 1.06, "od280/od315_of_diluted_wines": 3.58, "proline": 1295.0, "target": 0}, {"alcohol": 14.83, "malic_acid": 1.64, "ash": 2.17, "alcalinity_of_ash": 14.0, "magnesium": 97.0, "total_phenols": 2.8, "flavanoids": 2.98, "nonflavanoid_phenols": 0.29, "proanthocyanins": 1.98, "color_intensity": 5.2, "hue": 1.08, "od280/od315_of_diluted_wines": 2.85, "proline": 1045.0, "target": 0}, {"alcohol": 13.86, "malic_acid": 1.35, "ash": 2.27, "alcalinity_of_ash": 16.0, "magnesium": 98.0, "total_phenols": 2.98, "flavanoids": 3.15, "nonflavanoid_phenols": 0.22, "proanthocyanins": 1.85, "color_intensity": 7.22, "hue": 1.01, "od280/od315_of_diluted_wines": 3.55, "proline": 1045.0, "target": 0}, {"alcohol": 14.1, "malic_acid": 2.16, "ash": 2.3, "alcalinity_of_ash": 18.0, "magnesium": 105.0, "total_phenols": 2.95, "flavanoids": 3.32, "nonflavanoid_phenols": 0.22, "proanthocyanins": 2.38, "color_intensity": 5.75, "hue": 1.25, "od280/od315_of_diluted_wines": 3.17, "proline": 1510.0, "target": 0}, {"alcohol": 14.12, "malic_acid": 1.48, "ash": 2.32, "alcalinity_of_ash": 16.8, "magnesium": 95.0, "total_phenols": 2.2, "flavanoids": 2.43, "nonflavanoid_phenols": 0.26, "proanthocyanins": 1.57, "color_intensity": 5.0, "hue": 1.17, "od280/od315_of_diluted_wines": 2.82, "proline": 1280.0, "target": 0}, {"alcohol": 13.75, "malic_acid": 1.73, "ash": 2.41, "alcalinity_of_ash": 16.0, "magnesium": 89.0, "total_phenols": 2.6, "flavanoids": 2.76, "nonflavanoid_phenols": 0.29, "proanthocyanins": 1.81, "color_intensity": 5.6, "hue": 1.15, "od280/od315_of_diluted_wines": 2.9, "proline": 1320.0, "target": 0}, {"alcohol": 14.75, "malic_acid": 1.73, "ash": 2.39, "alcalinity_of_ash": 11.4, "magnesium": 91.0, "total_phenols": 3.1, "flavanoids": 3.69, "nonflavanoid_phenols": 0.43, "proanthocyanins": 2.81, "color_intensity": 5.4, "hue": 1.25, "od280/od315_of_diluted_wines": 2.73, "proline": 1150.0, "target": 0}, {"alcohol": 14.38, "malic_acid": 1.87, "ash": 2.38, "alcalinity_of_ash": 12.0, "magnesium": 102.0, "total_phenols": 3.3, "flavanoids": 3.64, "nonflavanoid_phenols": 0.29, "proanthocyanins": 2.96, "color_intensity": 7.5, "hue": 1.2, "od280/od315_of_diluted_wines": 3.0, "proline": 1547.0, "target": 0}, {"alcohol": 13.63, "malic_acid": 1.81, "ash": 2.7, "alcalinity_of_ash": 17.2, "magnesium": 112.0, "total_phenols": 2.85, "flavanoids": 2.91, "nonflavanoid_phenols": 0.3, "proanthocyanins": 1.46, "color_intensity": 7.3, "hue": 1.28, "od280/od315_of_diluted_wines": 2.88, "proline": 1310.0, "target": 0}, {"alcohol": 14.3, "malic_acid": 1.92, "ash": 2.72, "alcalinity_of_ash": 20.0, "magnesium": 120.0, "total_phenols": 2.8, "flavanoids": 3.14, "nonflavanoid_phenols": 0.33, "proanthocyanins": 1.97, "color_intensity": 6.2, "hue": 1.07, "od280/od315_of_diluted_wines": 2.65, "proline": 1280.0, "target": 0}, {"alcohol": 13.83, "malic_acid": 1.57, "ash": 2.62, "alcalinity_of_ash": 20.0, "magnesium": 115.0, "total_phenols": 2.95, "flavanoids": 3.4, "nonflavanoid_phenols": 0.4, "proanthocyanins": 1.72, "color_intensity": 6.6, "hue": 1.13, "od280/od315_of_diluted_wines": 2.57, "proline": 1130.0, "target": 0}, {"alcohol": 14.19, "malic_acid": 1.59, "ash": 2.48, "alcalinity_of_ash": 16.5, "magnesium": 108.0, "total_phenols": 3.3, "flavanoids": 3.93, "nonflavanoid_phenols": 0.32, "proanthocyanins": 1.86, "color_intensity": 8.7, "hue": 1.23, "od280/od315_of_diluted_wines": 2.82, "proline": 1680.0, "target": 0}, {"alcohol": 13.64, "malic_acid": 3.1, "ash": 2.56, "alcalinity_of_ash": 15.2, "magnesium": 116.0, "total_phenols": 2.7, "flavanoids": 3.03, "nonflavanoid_phenols": 0.17, "proanthocyanins": 1.66, "color_intensity": 5.1, "hue": 0.96, "od280/od315_of_diluted_wines": 3.36, "proline": 845.0, "target": 0}, {"alcohol": 14.06, "malic_acid": 1.63, "ash": 2.28, "alcalinity_of_ash": 16.0, "magnesium": 126.0, "total_phenols": 3.0, "flavanoids": 3.17, "nonflavanoid_phenols": 0.24, "proanthocyanins": 2.1, "color_intensity": 5.65, "hue": 1.09, "od280/od315_of_diluted_wines": 3.71, "proline": 780.0, "target": 0}, {"alcohol": 12.93, "malic_acid": 3.8, "ash": 2.65, "alcalinity_of_ash": 18.6, "magnesium": 102.0, "total_phenols": 2.41, "flavanoids": 2.41, "nonflavanoid_phenols": 0.25, "proanthocyanins": 1.98, "color_intensity": 4.5, "hue": 1.03, "od280/od315_of_diluted_wines": 3.52, "proline": 770.0, "target": 0}, {"alcohol": 13.71, "malic_acid": 1.86, "ash": 2.36, "alcalinity_of_ash": 16.6, "magnesium": 101.0, "total_phenols": 2.61, "flavanoids": 2.88, "nonflavanoid_phenols": 0.27, "proanthocyanins": 1.69, "color_intensity": 3.8, "hue": 1.11, "od280/od315_of_diluted_wines": 4.0, "proline": 1035.0, "target": 0}, {"alcohol": 12.85, "malic_acid": 1.6, "ash": 2.52, "alcalinity_of_ash": 17.8, "magnesium": 95.0, "total_phenols": 2.48, "flavanoids": 2.37, "nonflavanoid_phenols": 0.26, "proanthocyanins": 1.46, "color_intensity": 3.93, "hue": 1.09, "od280/od315_of_diluted_wines": 3.63, "proline": 1015.0, "target": 0}, {"alcohol": 13.5, "malic_acid": 1.81, "ash": 2.61, "alcalinity_of_ash": 20.0, "magnesium": 96.0, "total_phenols": 2.53, "flavanoids": 2.61, "nonflavanoid_phenols": 0.28, "proanthocyanins": 1.66, "color_intensity": 3.52, "hue": 1.12, "od280/od315_of_diluted_wines": 3.82, "proline": 845.0, "target": 0}, {"alcohol": 13.05, "malic_acid": 2.05, "ash": 3.22, "alcalinity_of_ash": 25.0, "magnesium": 124.0, "total_phenols": 2.63, "flavanoids": 2.68, "nonflavanoid_phenols": 0.47, "proanthocyanins": 1.92, "color_intensity": 3.58, "hue": 1.13, "od280/od315_of_diluted_wines": 3.2, "proline": 830.0, "target": 0}, {"alcohol": 13.39, "malic_acid": 1.77, "ash": 2.62, "alcalinity_of_ash": 16.1, "magnesium": 93.0, "total_phenols": 2.85, "flavanoids": 2.94, "nonflavanoid_phenols": 0.34, "proanthocyanins": 1.45, "color_intensity": 4.8, "hue": 0.92, "od280/od315_of_diluted_wines": 3.22, "proline": 1195.0, "target": 0}, {"alcohol": 13.3, "malic_acid": 1.72, "ash": 2.14, "alcalinity_of_ash": 17.0, "magnesium": 94.0, "total_phenols": 2.4, "flavanoids": 2.19, "nonflavanoid_phenols": 0.27, "proanthocyanins": 1.35, "color_intensity": 3.95, "hue": 1.02, "od280/od315_of_diluted_wines": 2.77, "proline": 1285.0, "target": 0}, {"alcohol": 13.87, "malic_acid": 1.9, "ash": 2.8, "alcalinity_of_ash": 19.4, "magnesium": 107.0, "total_phenols": 2.95, "flavanoids": 2.97, "nonflavanoid_phenols": 0.37, "proanthocyanins": 1.76, "color_intensity": 4.5, "hue": 1.25, "od280/od315_of_diluted_wines": 3.4, "proline": 915.0, "target": 0}, {"alcohol": 14.02, "malic_acid": 1.68, "ash": 2.21, "alcalinity_of_ash": 16.0, "magnesium": 96.0, "total_phenols": 2.65, "flavanoids": 2.33, "nonflavanoid_phenols": 0.26, "proanthocyanins": 1.98, "color_intensity": 4.7, "hue": 1.04, "od280/od315_of_diluted_wines": 3.59, "proline": 1035.0, "target": 0}, {"alcohol": 13.73, "malic_acid": 1.5, "ash": 2.7, "alcalinity_of_ash": 22.5, "magnesium": 101.0, "total_phenols": 3.0, "flavanoids": 3.25, "nonflavanoid_phenols": 0.29, "proanthocyanins": 2.38, "color_intensity": 5.7, "hue": 1.19, "od280/od315_of_diluted_wines": 2.71, "proline": 1285.0, "target": 0}, {"alcohol": 13.58, "malic_acid": 1.66, "ash": 2.36, "alcalinity_of_ash": 19.1, "magnesium": 106.0, "total_phenols": 2.86, "flavanoids": 3.19, "nonflavanoid_phenols": 0.22, "proanthocyanins": 1.95, "color_intensity": 6.9, "hue": 1.09, "od280/od315_of_diluted_wines": 2.88, "proline": 1515.0, "target": 0}, {"alcohol": 13.68, "malic_acid": 1.83, "ash": 2.36, "alcalinity_of_ash": 17.2, "magnesium": 104.0, "total_phenols": 2.42, "flavanoids": 2.69, "nonflavanoid_phenols": 0.42, "proanthocyanins": 1.97, "color_intensity": 3.84, "hue": 1.23, "od280/od315_of_diluted_wines": 2.87, "proline": 990.0, "target": 0}, {"alcohol": 13.76, "malic_acid": 1.53, "ash": 2.7, "alcalinity_of_ash": 19.5, "magnesium": 132.0, "total_phenols": 2.95, "flavanoids": 2.74, "nonflavanoid_phenols": 0.5, "proanthocyanins": 1.35, "color_intensity": 5.4, "hue": 1.25, "od280/od315_of_diluted_wines": 3.0, "proline": 1235.0, "target": 0}, {"alcohol": 13.51, "malic_acid": 1.8, "ash": 2.65, "alcalinity_of_ash": 19.0, "magnesium": 110.0, "total_phenols": 2.35, "flavanoids": 2.53, "nonflavanoid_phenols": 0.29, "proanthocyanins": 1.54, "color_intensity": 4.2, "hue": 1.1, "od280/od315_of_diluted_wines": 2.87, "proline": 1095.0, "target": 0}, {"alcohol": 13.48, "malic_acid": 1.81, "ash": 2.41, "alcalinity_of_ash": 20.5, "magnesium": 100.0, "total_phenols": 2.7, "flavanoids": 2.98, "nonflavanoid_phenols": 0.26, "proanthocyanins": 1.86, "color_intensity": 5.1, "hue": 1.04, "od280/od315_of_diluted_wines": 3.47, "proline": 920.0, "target": 0}, {"alcohol": 13.28, "malic_acid": 1.64, "ash": 2.84, "alcalinity_of_ash": 15.5, "magnesium": 110.0, "total_phenols": 2.6, "flavanoids": 2.68, "nonflavanoid_phenols": 0.34, "proanthocyanins": 1.36, "color_intensity": 4.6, "hue": 1.09, "od280/od315_of_diluted_wines": 2.78, "proline": 880.0, "target": 0}, {"alcohol": 13.05, "malic_acid": 1.65, "ash": 2.55, "alcalinity_of_ash": 18.0, "magnesium": 98.0, "total_phenols": 2.45, "flavanoids": 2.43, "nonflavanoid_phenols": 0.29, "proanthocyanins": 1.44, "color_intensity": 4.25, "hue": 1.12, "od280/od315_of_diluted_wines": 2.51, "proline": 1105.0, "target": 0}, {"alcohol": 13.07, "malic_acid": 1.5, "ash": 2.1, "alcalinity_of_ash": 15.5, "magnesium": 98.0, "total_phenols": 2.4, "flavanoids": 2.64, "nonflavanoid_phenols": 0.28, "proanthocyanins": 1.37, "color_intensity": 3.7, "hue": 1.18, "od280/od315_of_diluted_wines": 2.69, "proline": 1020.0, "target": 0}, {"alcohol": 14.22, "malic_acid": 3.99, "ash": 2.51, "alcalinity_of_ash": 13.2, "magnesium": 128.0, 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"proanthocyanins": 1.7, "color_intensity": 5.43, "hue": 0.88, "od280/od315_of_diluted_wines": 3.56, "proline": 1095.0, "target": 0}, {"alcohol": 13.24, "malic_acid": 3.98, "ash": 2.29, "alcalinity_of_ash": 17.5, "magnesium": 103.0, "total_phenols": 2.64, "flavanoids": 2.63, "nonflavanoid_phenols": 0.32, "proanthocyanins": 1.66, "color_intensity": 4.36, "hue": 0.82, "od280/od315_of_diluted_wines": 3.0, "proline": 680.0, "target": 0}, {"alcohol": 13.05, "malic_acid": 1.77, "ash": 2.1, "alcalinity_of_ash": 17.0, "magnesium": 107.0, "total_phenols": 3.0, "flavanoids": 3.0, "nonflavanoid_phenols": 0.28, "proanthocyanins": 2.03, "color_intensity": 5.04, "hue": 0.88, "od280/od315_of_diluted_wines": 3.35, "proline": 885.0, "target": 0}, {"alcohol": 14.21, "malic_acid": 4.04, "ash": 2.44, "alcalinity_of_ash": 18.9, "magnesium": 111.0, "total_phenols": 2.85, "flavanoids": 2.65, "nonflavanoid_phenols": 0.3, "proanthocyanins": 1.25, "color_intensity": 5.24, "hue": 0.87, 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原始json字符串长度： 53914
压缩编码后的json字符串： 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
压缩编码后的json字符串长度： 7880
解压缩后的json字符串： [{"alcohol": 14.23, "malic_acid": 1.71, "ash": 2.43, "alcalinity_of_ash": 15.6, "magnesium": 127.0, "total_phenols": 2.8, "flavanoids": 3.06, "nonflavanoid_phenols": 0.28, "proanthocyanins": 2.29, "color_intensity": 5.64, "hue": 1.04, "od280/od315_of_diluted_wines": 3.92, "proline": 1065.0, "target": 0}, {"alcohol": 13.2, "malic_acid": 1.78, "ash": 2.14, "alcalinity_of_ash": 11.2, "magnesium": 100.0, "total_phenols": 2.65, "flavanoids": 2.76, "nonflavanoid_phenols": 0.26, "proanthocyanins": 1.28, "color_intensity": 4.38, "hue": 1.05, "od280/od315_of_diluted_wines": 3.4, "proline": 1050.0, "target": 0}, {"alcohol": 13.16, "malic_acid": 2.36, "ash": 2.67, "alcalinity_of_ash": 18.6, "magnesium": 101.0, "total_phenols": 2.8, "flavanoids": 3.24, "nonflavanoid_phenols": 0.3, "proanthocyanins": 2.81, "color_intensity": 5.68, "hue": 1.03, "od280/od315_of_diluted_wines": 3.17, "proline": 1185.0, "target": 0}, {"alcohol": 14.37, "malic_acid": 1.95, "ash": 2.5, "alcalinity_of_ash": 16.8, "magnesium": 113.0, "total_phenols": 3.85, "flavanoids": 3.49, "nonflavanoid_phenols": 0.24, "proanthocyanins": 2.18, "color_intensity": 7.8, "hue": 0.86, "od280/od315_of_diluted_wines": 3.45, "proline": 1480.0, "target": 0}, {"alcohol": 13.24, "malic_acid": 2.59, "ash": 2.87, "alcalinity_of_ash": 21.0, "magnesium": 118.0, "total_phenols": 2.8, "flavanoids": 2.69, "nonflavanoid_phenols": 0.39, "proanthocyanins": 1.82, "color_intensity": 4.32, "hue": 1.04, "od280/od315_of_diluted_wines": 2.93, "proline": 735.0, "target": 0}, {"alcohol": 14.2, "malic_acid": 1.76, "ash": 2.45, "alcalinity_of_ash": 15.2, "magnesium": 112.0, "total_phenols": 3.27, "flavanoids": 3.39, "nonflavanoid_phenols": 0.34, "proanthocyanins": 1.97, "color_intensity": 6.75, "hue": 1.05, "od280/od315_of_diluted_wines": 2.85, "proline": 1450.0, "target": 0}, {"alcohol": 14.39, "malic_acid": 1.87, "ash": 2.45, "alcalinity_of_ash": 14.6, "magnesium": 96.0, "total_phenols": 2.5, "flavanoids": 2.52, 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解压缩后的json字符串长度： 53914
源字符串和解压后的字符串相同

压缩前字符串长度53914，压缩后7880，说明 大字符串压缩后再进行base64编码，长度明显变小