Question

我正在尝试使用python脚本csv2es将数据加载到elasticsearch 5。

传递给csv2es的

参数引用了带有elasticsearch映射的json文件。加载下面的映射文件时：

{
"dynamic": "true",
"properties": {
    "username": {"type": “text”},
    "date": {"type": "date", "format" : "yyyy-MM-dd HH:mm"},
    "retweets": {"type": “integer”},
    "favourites": {"type": “integer”},
    "text": {"type": “text”},
    "geo": {"type": “keyword”},
    "mentions": {"type": “text”},
    "hashtags": {"type": “text”},
    "id": {"type": “keyword”},
    "permalink": {"type": “keyword”}
    }
}

这会引发以下错误：

Applying mapping from: csv2es_mappings.json
Traceback (most recent call last):
  File "/usr/local/bin/csv2es", line 11, in <module>
    sys.exit(cli())
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 664, in     __call__
return self.main(*args, **kwargs)
File "/usr/local/lib/python2.7/site-packages/click/core.py", line 644, in main
rv = self.invoke(ctx)
File "/usr/local/lib/python2.7/site-packages/click/core.py", line 837, in     invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/local/lib/python2.7/site-packages/click/core.py", line 464, in invoke
return callback(*args, **kwargs)
File "/usr/local/lib/python2.7/site-packages/csv2es.py", line 206, in cli
mapping = json.loads(f.read())
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/__init__.py", line 339, in loads
return _default_decoder.decode(s)
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/decoder.py", line 364, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/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

但是，当我加载以下文件时，数据加载运行。我根据ES5映射的指南使用text和keyword而不是string - 使用string时，字段未被拾取并正确编入索引。

{
"dynamic": "true",
"properties": {
    "username": {"type": "string"},
    "date": {"type": "date", "format" : "yyyy-MM-dd HH:mm"},
    "retweets": {"type": "string"},
    "favourites": {"type": "string"},
    "text": {"type": "string"},
    "geo": {"type": "string"},
    "mentions": {"type": "string"},
    "hashtags": {"type": "string"},
    "id": {"type": "string"},
    "permalink": {"type": "string"}
    }
}

Answer 1

afaik，该错误意味着您的json数据无效。在ui:repeat中，private ICoreService mService; private boolean mConnected = false; private boolean mConnecting = false; private List<Something> mPendingTasks = new ArrayList<Something>; private void bindService() { try { Intent service = new Intent(); service.setClassName(Constants.THE_SERVICE_PACKAGE_NAME, Constants.THE_SERVICE_FULL_NAME); mContext.bindService(service, mServiceConnection, Context.BIND_AUTO_CREATE); mConnecting = true; } catch (Exception e) { //handle exception } } public void serviceDoSomething(Something task) { try { if (mService == null) { synchronized (mPendingTasks) { mPendingTasks.add(task); } } else { mService.doSomething(task); } } catch (Exception e) { //handle exception } } private ServiceConnection mServiceConnection = new ServiceConnection() { @Override public void onServiceDisconnected(ComponentName name) { mConnected = false; mConnecting = false; mService = null; } @Override public void onServiceConnected(ComponentName name, IBinder service) { mConnected = true; mConnecting = false; mService = ICoreService.Stub.asInterface(service); drainPendingTasks(); } }; private void drainPendingTasks() { new Thread(new Runnable() { @Override public void run() { synchronized (mPendingTasks) { try { if (!mPendingTasks.isEmpty()) { for (Something task : mPendingTasks) { mService.doSomething(task); } mPendingTasks.clear(); } } catch (Exception e) { //handle exception } } } }).start(); } left double quotation mark包围“text” quotation mark。

升级你的python，这样你就可以在解码json字符串时看到可读错误或使用“库。

请参阅：Displaying better error message than "No JSON object could be decoded"

elasticsearch映射没有JSON对象错误

1 个答案: