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Python實現(xiàn)把json格式轉(zhuǎn)換成文本或sql文件
2017-10-12
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Python實現(xiàn)把json格式轉(zhuǎn)換成文本或sql文件

python如何將json格式的數(shù)據(jù)快速的轉(zhuǎn)化成指定格式的數(shù)據(jù)呢？或者轉(zhuǎn)換成sql文件？

下面的例子是將json格式的數(shù)據(jù)準(zhǔn)換成以#_#分割的文本數(shù)據(jù)，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：如果數(shù)據(jù)量過大不宜全部放在str里一次性寫入文件?？梢钥紤]逐行寫入，或者到達(dá)一定程度時批量寫入。

另外：python通過strip(rm)替換字符串，當(dāng)rm為空時，默認(rèn)刪除空白符（包括'\n', '\r',  '\t',  ' ')。

測試：

json格式的數(shù)據(jù)
    
[root@bogon tutorial]# vi tencent_test.json
 
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標(biāo)題", "title": "標(biāo)題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

運(yùn)行python json2txt.py    
[root@bogon tutorial]# python json2txt.py
success
[root@bogon tutorial]# more tencent.txt
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題
父標(biāo)題#_#parenturl#_#作者#_#linkurl#_#標(biāo)題

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