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社区首页 >问答首页 >JSON ValueError在CMS，龙卷风

问JSON ValueError在CMS，龙卷风
EN

Stack Overflow用户
提问于 2016-08-19 21:52:24
回答 1查看 184关注 0票数 0

我正在尝试运行Ubuntu16.04中的竞赛管理系统(docs)。CMS运行正常，但有时会返回错误，简而言之如下所示：

代码语言：javascript
复制
ValueError: No JSON object could be decoded

我担心如果通过编辑包中的代码就会把一切都搞错，所以请避免这种方法。

下面是cmsAdminWebServer中的错误消息：

代码语言：javascript
复制
2016/08/19 22:39:55 - ERROR [AdminWebServer,0] Cannot decode score type parameters.
ValueError('No JSON object could be decoded',).
2016/08/19 22:39:55 - ERROR [AdminWebServer,0] Uncaught exception GET /user/3 (127.0.0.1)
HTTPServerRequest(protocol='http', host='127.0.0.1:8889', method='GET', uri='/user/3', version='HTTP/1.1', remote_ip='127.0.0.1', headers={'Accept-Language': 'en-US,en;q=0.5', 'Accept-Encoding': 'gzip, deflate', 'Connection': 'keep-alive', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', 'Upgrade-Insecure-Requests': '1', 'Host': '127.0.0.1:8889', 'Cookie': 'unread_count="2|1:0|10:1471613726|12:unread_count|4:MA==|cb62dfe311f2b0bb4378ad4ba752764da4e2f88314a3aa76969aeec5ba764733"; login="2|1:0|10:1471612630|5:login|68:KFZ5aHVucm9oCnAwClZxd2VydHl1aQpwMQpGMTQ3MTYxMjYzMC44MTA1NzgKdHAyCi4=|a94f16138a54068f9eccc9e2950e7e079ff0523475d8c7f3dde9a2cc0048870b"', 'Referer': 'http://127.0.0.1:8889/userlist/2', 'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0'})
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 1332, in _execute
    result = method(*self.path_args, **self.path_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/AdminWebServer.py", line 1687, in get
    self.render("user.html", **self.r_params)
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 665, in render
    html = self.render_string(template_name, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 772, in render_string
    return t.generate(**namespace)
  File "/usr/local/lib/python2.7/dist-packages/tornado/template.py", line 278, in generate
    return execute()
  File "user_html.generated.py", line 375, in _tt_execute
    score_type = get_score_type(dataset=dataset)  # user.html:62 (via base.html:129)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/grading/scoretypes/__init__.py", line 77, in get_score_type
    parameters = json.loads(parameters)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded
2016/08/19 22:39:55 - ERROR [AdminWebServer,0] Uncaught exception (ValueError('No JSON object could be decoded',)) while processing a request: Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 1332, in _execute
    result = method(*self.path_args, **self.path_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/AdminWebServer.py", line 1687, in get
    self.render("user.html", **self.r_params)
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 665, in render
    html = self.render_string(template_name, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 772, in render_string
    return t.generate(**namespace)
  File "/usr/local/lib/python2.7/dist-packages/tornado/template.py", line 278, in generate
    return execute()
  File "user_html.generated.py", line 375, in _tt_execute
    score_type = get_score_type(dataset=dataset)  # user.html:62 (via base.html:129)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/grading/scoretypes/__init__.py", line 77, in get_score_type
    parameters = json.loads(parameters)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

2016/08/19 22:39:55 - ERROR [AdminWebServer,0] 500 GET /user/3 (127.0.0.1) 35.83ms
127.0.0.1 - - [2016-08-19 22:39:55] "GET /user/3 HTTP/1.1" 500 4235 0.037082

当我尝试查看任何用户的个人资料时，就会出现这种情况

在cmsContestWebServer中：

代码语言：javascript
复制
2016/08/19 22:45:24 - ERROR [ContestWebServer,0] Cannot decode score type parameters.
ValueError('No JSON object could be decoded',).

和

代码语言：javascript
复制
2016/08/19 22:45:26 - ERROR [ContestWebServer,0] Cannot decode score type parameters.
ValueError('No JSON object could be decoded',).
2016/08/19 22:45:26 - ERROR [ContestWebServer,0] Uncaught exception GET /tasks/Hello/submissions/3 (127.0.0.1)
HTTPServerRequest(protocol='http', host='127.0.0.1:8888', method='GET', uri='/tasks/Hello/submissions/3', version='HTTP/1.1', remote_ip='127.0.0.1', headers={'Accept-Language': 'en-US,en;q=0.5', 'Accept-Encoding': 'gzip, deflate', 'Connection': 'keep-alive', 'Accept': '*/*', 'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0', 'Host': '127.0.0.1:8888', 'X-Requested-With': 'XMLHttpRequest', 'Referer': 'http://127.0.0.1:8888/tasks/Hello/submissions', 'Cookie': 'unread_count="2|1:0|10:1471614324|12:unread_count|4:MA==|29d9493cc5372707a208c1eca6f791069159c152d0afaf5faeba8ed098391a04"; login="2|1:0|10:1471614324|5:login|68:KFZ5aHVucm9oCnAwClZxd2VydHl1aQpwMQpGMTQ3MTYxNDMyNC4yODA5NTgKdHAyCi4=|a2ea45df8688435985f9e1d5dacc23d4c37ae7ff7bf992ea0cb32e5e2f31f530"'})
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 1332, in _execute
    result = method(*self.path_args, **self.path_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 2601, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/__init__.py", line 195, in wrapped
    return func(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/ContestWebServer.py", line 1283, in get
    score_type = get_score_type(dataset=task.active_dataset)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/grading/scoretypes/__init__.py", line 77, in get_score_type
    parameters = json.loads(parameters)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded
2016/08/19 22:45:26 - ERROR [ContestWebServer,0] Uncaught exception (ValueError('No JSON object could be decoded',)) while processing a request: Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 1332, in _execute
    result = method(*self.path_args, **self.path_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 2601, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/__init__.py", line 195, in wrapped
    return func(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/ContestWebServer.py", line 1283, in get
    score_type = get_score_type(dataset=task.active_dataset)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/grading/scoretypes/__init__.py", line 77, in get_score_type
    parameters = json.loads(parameters)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

2016/08/19 22:45:26 - ERROR [ContestWebServer,0] 500 GET /tasks/Hello/submissions/3 (127.0.0.1) 35.07ms
127.0.0.1 - - [2016-08-19 22:45:26] "GET /tasks/Hello/submissions/3 HTTP/1.1" 500 4775 0.035801
2016/08/19 22:45:26 - ERROR [ContestWebServer,0] Cannot decode score type parameters.
ValueError('No JSON object could be decoded',).
2016/08/19 22:45:26 - ERROR [ContestWebServer,0] Uncaught exception GET /tasks/Hello/submissions/1 (127.0.0.1)
HTTPServerRequest(protocol='http', host='127.0.0.1:8888', method='GET', uri='/tasks/Hello/submissions/1', version='HTTP/1.1', remote_ip='127.0.0.1', headers={'Accept-Language': 'en-US,en;q=0.5', 'Accept-Encoding': 'gzip, deflate', 'Connection': 'keep-alive', 'Accept': '*/*', 'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0', 'Host': '127.0.0.1:8888', 'X-Requested-With': 'XMLHttpRequest', 'Referer': 'http://127.0.0.1:8888/tasks/Hello/submissions', 'Cookie': 'unread_count="2|1:0|10:1471614324|12:unread_count|4:MA==|29d9493cc5372707a208c1eca6f791069159c152d0afaf5faeba8ed098391a04"; login="2|1:0|10:1471614324|5:login|68:KFZ5aHVucm9oCnAwClZxd2VydHl1aQpwMQpGMTQ3MTYxNDMyNC4yODA5NTgKdHAyCi4=|a2ea45df8688435985f9e1d5dacc23d4c37ae7ff7bf992ea0cb32e5e2f31f530"'})
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 1332, in _execute
    result = method(*self.path_args, **self.path_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 2601, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/__init__.py", line 195, in wrapped
    return func(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/ContestWebServer.py", line 1283, in get
    score_type = get_score_type(dataset=task.active_dataset)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/grading/scoretypes/__init__.py", line 77, in get_score_type
    parameters = json.loads(parameters)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded
2016/08/19 22:45:26 - ERROR [ContestWebServer,0] Uncaught exception (ValueError('No JSON object could be decoded',)) while processing a request: Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 1332, in _execute
    result = method(*self.path_args, **self.path_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 2601, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/__init__.py", line 195, in wrapped
    return func(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/ContestWebServer.py", line 1283, in get
    score_type = get_score_type(dataset=task.active_dataset)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/grading/scoretypes/__init__.py", line 77, in get_score_type
    parameters = json.loads(parameters)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

2016/08/19 22:45:26 - ERROR [ContestWebServer,0] 500 GET /tasks/Hello/submissions/1 (127.0.0.1) 56.84ms
127.0.0.1 - - [2016-08-19 22:45:26] "GET /tasks/Hello/submissions/1 HTTP/1.1" 500 4775 0.057471
2016/08/19 22:45:26 - ERROR [ContestWebServer,0] Cannot decode score type parameters.
ValueError('No JSON object could be decoded',).
2016/08/19 22:45:26 - ERROR [ContestWebServer,0] Uncaught exception GET /tasks/Hello/submissions/2 (127.0.0.1)
HTTPServerRequest(protocol='http', host='127.0.0.1:8888', method='GET', uri='/tasks/Hello/submissions/2', version='HTTP/1.1', remote_ip='127.0.0.1', headers={'Accept-Language': 'en-US,en;q=0.5', 'Accept-Encoding': 'gzip, deflate', 'Connection': 'keep-alive', 'Accept': '*/*', 'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0', 'Host': '127.0.0.1:8888', 'X-Requested-With': 'XMLHttpRequest', 'Referer': 'http://127.0.0.1:8888/tasks/Hello/submissions', 'Cookie': 'unread_count="2|1:0|10:1471614324|12:unread_count|4:MA==|29d9493cc5372707a208c1eca6f791069159c152d0afaf5faeba8ed098391a04"; login="2|1:0|10:1471614324|5:login|68:KFZ5aHVucm9oCnAwClZxd2VydHl1aQpwMQpGMTQ3MTYxNDMyNC4yODA5NTgKdHAyCi4=|a2ea45df8688435985f9e1d5dacc23d4c37ae7ff7bf992ea0cb32e5e2f31f530"'})
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 1332, in _execute
    result = method(*self.path_args, **self.path_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 2601, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/__init__.py", line 195, in wrapped
    return func(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/ContestWebServer.py", line 1283, in get
    score_type = get_score_type(dataset=task.active_dataset)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/grading/scoretypes/__init__.py", line 77, in get_score_type
    parameters = json.loads(parameters)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded
2016/08/19 22:45:26 - ERROR [ContestWebServer,0] Uncaught exception (ValueError('No JSON object could be decoded',)) while processing a request: Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 1332, in _execute
    result = method(*self.path_args, **self.path_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 2601, in wrapper
    return method(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/__init__.py", line 195, in wrapped
    return func(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/server/ContestWebServer.py", line 1283, in get
    score_type = get_score_type(dataset=task.active_dataset)
  File "/usr/local/lib/python2.7/dist-packages/cms-1.2.0-py2.7.egg/cms/grading/scoretypes/__init__.py", line 77, in get_score_type
    parameters = json.loads(parameters)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

2016/08/19 22:45:26 - ERROR [ContestWebServer,0] 500 GET /tasks/Hello/submissions/2 (127.0.0.1) 63.60ms
127.0.0.1 - - [2016-08-19 22:45:26] "GET /tasks/Hello/submissions/2 HTTP/1.1" 500 4775 0.064078

当我试图以用户的身份查看我的提交时，这种情况发生了，并且分数没有显示出来。

以下是版本：

代码语言：javascript
复制
$ pip list
backport-ipaddress (0.1)
backports-abc (0.4)
backports.ssl-match-hostname (3.5.0.1)
certifi (2016.8.8)
cms (1.2.0)
coverage (4.2)
Django (1.10)
djrill (2.1.0)
funcsigs (1.0.2)
gevent (1.1.2)
greenlet (0.4.10)
mechanize (0.2.5)
mock (2.0.0)
netifaces (0.10.4)
patool (1.12)
pbr (1.10.0)
pip (8.1.2)
psutil (0.6.1)
pyasn (1.5.0b7)
pyasn1 (0.1.9)
pycrypto (2.6.1)
pytz (2014.10)
PyYAML (3.10)
requests (2.11.0)
setuptools (25.2.0)
singledispatch (3.4.0.3)
six (1.10.0)
SQLAlchemy (0.6.0)
tornado (4.0)
Werkzeug (0.11.10)
wheel (0.29.0)

我安装了这个(在文档中)：

代码语言：javascript
复制
sudo apt-get install build-essential fpc postgresql postgresql-client \
 gettext python2.7 python-setuptools python-tornado python-psycopg2 \
 python-sqlalchemy python-psutil python-netifaces python-crypto \
 python-tz python-six iso-codes shared-mime-info stl-manual \
 python-beautifulsoup python-mechanize python-coverage python-mock \
 cgroup-lite python-requests python-werkzeug python-gevent patool

如果你需要，下面是你的需求：

代码语言：javascript
复制
setuptools>=0.6
tornado>=2.0
psycopg2>=2.4
sqlalchemy>=0.7
netifaces>=0.5
pycrypto>=2.3
pyyaml>=3.10
pytz>=2011k
psutil>=0.6
BeautifulSoup>=3.2
coverage>=3.4
mock>=1.0
mechanize>=0.2
six>=1.1
requests>=1.1
gevent>=1.0
werkzeug>=0.8
pycups>=1.9
PyPDF2>=1.19
patool>=1.7

我已经将tornado 4.2.1的版本从this降级到4.0，psutil降级到0.6.1。

如果你需要任何关于这个的列表，或者如果我问错了什么，请告诉我。谢谢!

python
json
content-management-system
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2016-08-28 23:05:23

对不起，这是我的错。对于谁有相同的错误，(可以预见的是没有人)我填写的任务评分表单不正确，所以JSON无法解码它们。关门了！

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/39040796

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