从字符串中获取有效载荷

import json

def get_payload_from_json(json_str):
    try:
        payload = json.loads(json_str)
        return payload
    except json.JSONDecodeError as e:
        print(f"JSON解析错误: {e}")
        return None

# 示例
json_str = '{"name": "Alice", "age": 30}'
payload = get_payload_from_json(json_str)
print(payload)  # 输出: {'name': 'Alice', 'age': 30}

import re

def clean_string(input_str):
    # 去除无效字符
    cleaned_str = re.sub(r'[^\x00-\x7F]+', '', input_str)
    return cleaned_str

# 示例
input_str = "Hello, \xe4\xb8\xad\xe6\x96\x87!"
cleaned_str = clean_string(input_str)
print(cleaned_str)  # 输出: Hello, 中文!

def decode_string(input_str, encoding='utf-8'):
    try:
        decoded_str = input_str.decode(encoding)
        return decoded_str
    except UnicodeDecodeError as e:
        print(f"解码错误: {e}")
        return None

# 示例
input_bytes = b'\xe4\xb8\xad\xe6\x96\x87'
decoded_str = decode_string(input_bytes)
print(decoded_str)  # 输出: 中文