Python实现把json格式转换成文本或sql文件


            python如何将json格式的数据快速的转化成指定格式的数据呢？或者转换成sql文件？

下面的例子是将json格式的数据准换成以#_#分割的文本数据，也可用于生成sql文件。





[root@bogon tutorial]# vi json2txt.py 

#-*- coding: UTF-8 -*-

import json



data = []

with open('./tencent_test.json') as f:

  for line in f:

    data.append(json.loads(line))



#print json.dumps(data, ensure_ascii=False)





import codecs

file_object = codecs.open('tencent.txt', 'w' ,"utf-8")

str = "\r\n"

splitstr = "#_#"

for item in data:

  #print json.dumps(item)

  #str = str + "insert into tencent(name,catalog,workLocation,recruitNumber,detailLink,publishTime) values "

  #str = str + "'%s','%s','%s','%s','%s'\r\n" % (item['parentTitle'],item['parentLink'],item['author'],item['link'],item['title'])

  #print json.loads(item['author']) + "\r\n"

  str = "%s#_#%s#_#%s#_#%s#_#%s\r\n" % (item['parentTitle'],item['parentLink'],item['author'],item['link'],item['title'].strip())

  file_object.write(str)



#import codecs

#file_object = codecs.open('tencent.txt', 'w' ,"utf-8")

#file_object.write(str)

file_object.close()

print "success"









注：如果数据量过大不宜全部放在str里一次性写入文件。可以考虑逐行写入，或者到达一定程度时批量写入。

另外：python通过strip(rm)替换字符串，当rm为空时，默认删除空白符（包括'\n', '\r',  '\t',  ' ')。

测试：

json格式的数据





[root@bogon tutorial]# vi tencent_test.json 



{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

{"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}







运行python json2txt.py





[root@bogon tutorial]# python json2txt.py 

success

[root@bogon tutorial]# more tencent.txt 

父标题#_#parenturl#_#作者#_#linkurl#_#标题

父标题#_#parenturl#_#作者#_#linkurl#_#标题

父标题#_#parenturl#_#作者#_#linkurl#_#标题

父标题#_#parenturl#_#作者#_#linkurl#_#标题

父标题#_#parenturl#_#作者#_#linkurl#_#标题

父标题#_#parenturl#_#作者#_#linkurl#_#标题

父标题#_#parenturl#_#作者#_#linkurl#_#标题

父标题#_#parenturl#_#作者#_#linkurl#_#标题

父标题#_#parenturl#_#作者#_#linkurl#_#标题

父标题#_#parenturl#_#作者#_#linkurl#_#标题

父标题#_#parenturl#_#作者#_#linkurl#_#标题







            

            

