我宁愿不为我的用户重新处理所有数据两次，所以我尝试将数据作为隐藏表单输入发送，编码为JSON，以在下一个函数中生成CSV导出：
<h3> <form action="/c/flex_csv/" method="post">
<input type="hidden" name="data" value='%s'>
<input type="hidden" name="questions" value='%s'>
<input type="submit" name="submit" value="Download a CSV" />
</form></h3>
html源代码中的数据看起来还不错。引号和Unicode字符打破它时遇到了很多麻烦，所以我现在手动重新编码这些问题字符：
['数据'是词典列表]
def safe_listdict(data):
# makes a list of dict that will pass through HTML and CSV without character encoding problems or quotes breaking form input fields
import unicodedata
safe_data = []
for x in data:
line = {}
for k,v in x.items():
if type(v) == str:
line[k] = v.replace("'",''').replace('"','"').encode('ascii','xmlcharrefreplace')
elif type(v) == unicode:
# first normallizes the unicode, then converts to ascii, replacing xml as needed
line[k] = unicodedata.normalize('NFKD',v.replace("'",''').replace('"','"')).encode('ascii','xmlcharrefreplace')
else:
line[k] = str(v)
safe_data.append(line)
return safe_data
import json
safe_data = json.dumps(safe_listdict(data))
这就是html-source的样子：
<input type="hidden" name="data" value='[{"q0": "65604", "q3": "HOW VAP HAD HELP ME", "q2": "Before three months back i had nothing like knowledge in my mind about HIV/AID prevention, but now i had something in my mind. I had teach my three friends about it and when the had been reped where to visit before 72 hours. And after that i had also learned how to use ordinary towels which i didn't know how to use before. And how to maintain proper Hygine. Through VAP program i had know how to relate with other people like my parents, friends and boys in school. The last one is that i had now high parepresure, how to relate with my teachers and other pupils in school. For now i had teach over twenty girls in our community.", "q5": "HIV/AIDS AND PROPER HYGINE", "q4": "VIJANA AMANI PAMOJA", "q7": "NAIROBI", "q6": "KENYA", "q9": "Less than 1 month ago", "q8": "MATHARE 4B", "q15": "", "q14": "0720374037", "q16": "0735775820 lizokin2000@gmail.com", "q11": "14", "q10": "Female", "q13": "The right people", "q12": "Heard about it happening", "q19": "Knowledge"}, ...more dicts of same format...]
但是当我在下一个函数中解码JSON时，在python中，我总是会遇到错误解析：
ERROR:cherrypy.error.18520784:[07/Jan/2014:19:18:18] HTTP Traceback (most recent call last):
File "/home/djotjog/webapps/cp2/power_drill_down_flex.py", line 620, in flex_csv
data = json.loads(data)
File "/usr/local/lib/python2.7/json/__init__.py", line 338, in loads
return _default_decoder.decode(s)
File "/usr/local/lib/python2.7/json/decoder.py", line 365, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/local/lib/python2.7/json/decoder.py", line 381, in raw_decode
obj, end = self.scan_once(s, idx)
**ValueError: Expecting ',' delimiter: line 1 column 3108 (char 3107)**
在运行json.loads（data）之前，错误日志中的数据如下所示，将其从json转换回字典的python列表。我看不出任何明显的错误...
DEBUG:root:[{"q0": "65784", "q3": "Getting students to contribute to the environment", "q2": "We went to the schools to do education serious on the environment so they are more aware. We had evaluation and the student said they are more aware of what to do with their waste and on environmental issues. They said they are more willing to contribute to segregating their waste and stopping environmental issues like illegal logging. We suggested things like informing + warning people about the implication of what they are doing. They said they would do it", "q5": "how students were encouraged to take part in envir", "q4": "High school students", "q7": "Bohol, Pilar", "q6": "Philippines", "q9": "1-2 months ago", "q8": "Classrooms in Virgen del Pilar Academy", "q15": "Yes", "q14": "09156646213", "q17": "None", "q16": "09175442613", "q23": "70", "q10": "Male", "q13": "The right people", "q12": "Helped make it happen", "q11": "20", "q19": "Food and shelter, Knowledge, Self-esteem", "q18": "Inspired"}, ...more dictionaries...]
注意：目标是让用户通过CSV导出按钮保存数据。我必须将它发送到另一个页面，所以python函数可以先组织它。