绝望，上传文件失败。。遇到并解决java.lang.NullPointerException

解决报错：java.lang.NullPointerException

解决方法：将文件的编码方式改为utf-8即可！

截图：

修改成功后：

 

代码：

 

import os
import json
import re
def json_to_html(i,cvenum):
    print('正在处理：'+cvenum)
    head = "" \
           "
cvesummary for this cve
"
    tail = "
"#padding-left: 320px
    cvesummary_context = head + i + tail
    cvenum = str(cvenum)
    cvenum = cvenum.replace('-','')#去掉横杠
    with open('D:/0html/'+cvenum+'.html', "w", encoding='utf-8') as json_file:
        json_file.write(cvesummary_context)
        json_file.close()
    print('D:/0html/'+i+'.html')
def rewrite():
    global num
    cve_inf_file = open('试试.json', "r", encoding='utf-8')
    cve_inf_context = json.load(cve_inf_file)
    for i in cve_inf_context:
        # print(i)
        json_to_html(i['cvesummary'],i['Cve_ID'])#原本数据写为HTML，并以CVE编号命名！
        ss = re.findall('\d+.\d+', str(i['Cve_ID']))
        num += 1
        print('\n处理第'+str(num)+'个数据。其CVE编号为：'+ss[0]+'对应的json文件！ 共计：'+str(sum)+'个json文件\n')
        ss = str(ss[0])
        ss = ss.replace('-', '')
        i['cvesummary'] = ""+"查看"+ss+"所对应信息摘要"+""
    with open('cve_addprod.json', "w",encoding='utf-8') as json_file:
        json_str = json.dumps(cve_inf_context, indent=4, ensure_ascii=False)
        json_file.write(json_str)
        json_file.close()
    print('\n\n成功存储：D:/0test/cve_addprod.json.  一共'+str(num)+"条数据！")
if __name__ == '__main__':
    global num
    num = 0
    rewrite()