运行以下代码时遇到错误。请帮助我解决此问题,或建议通过JDBC连接Vertica服务器的另一种方法。
我也尝试过使用pyspark连接。但是,使用pyspark无法在vertica服务器中执行sql查询。
系统配置:
具有python 3.7.0的Linux
jaydebeapi版本-1.1.1
jpype版本-0.7.2
import jaydebeapi
import jpype
jdbc_url = 'jdbc:vertica://XX.XX.XXX.XXX/DATA?XXXXX'
vertica_properties={"user": "XXXX", "password": "XXXXX"}
jars = ['XXXX/vertica-jdbc-9.3.1-0.jar',
'XXXX/vertica-spark2.1_scala2.11.jar',
'XXXX/CustomVerticaDialect.jar']
connection = jaydebeapi.connect(jclassname='com.vertica.jdbc.Driver', url=jdbc_url, driver_args=vertica_properties, jars=jars)
connection
错误
--------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-5-cc7d2752ecd8> in <module>()
----> 1 connection = jaydebeapi.connect(jclassname='com.vertica.jdbc.Driver', url=jdbc_url, driver_args=vertica_properties, jars=jars)
2 connection
/BDAPP/python/anaconda3/lib/python3.7/site-packages/jaydebeapi/__init__.py in connect(jclassname, url, driver_args, jars, libs)
379 else:
380 libs = []
--> 381 jconn = _jdbc_connect(jclassname, url, driver_args, jars, libs)
382 return Connection(jconn, _converters)
383
/BDAPP/python/anaconda3/lib/python3.7/site-packages/jaydebeapi/__init__.py in _jdbc_connect_jpype(jclassname, url, driver_args, jars, libs)
180 types = jpype.java.sql.Types
181 types_map = {}
--> 182 for i in types.__javaclass__.getClassFields():
183 types_map[i.getName()] = i.getStaticAttribute()
184 _init_types(types_map)
AttributeError: type object 'java.sql.Types' has no attribute '__javaclass__'
答案 0 :(得分:2)
截至2020年3月,jaydebeapi似乎与jpype 0.7.2不兼容。这是指出此问题的github页面:http://github.com/baztian/jaydebeapi/issues/99。
根据github页面的解决方案是使用以下任一方法将jpype降级为jpype 0.6.3:
pip install JPype1==0.6.3 --force-reinstall
或
conda install -c conda-forge JPype1=0.6.3 --force-reinstall
降级jpype对我有用
答案 1 :(得分:1)
请升级到JayDeBeApi> = 1.2.1。从JPype1 0.7.0开始,引入了一些非向后兼容的更改。较新的JayDeBeApi版本可以解决这个问题。
self.Employee1_FirstDay_ActualShift.set( items[0][0])
self.Employee1_SecondDay_ActualShift.set( items[1][0])
self.Employee1_ThirdDay_ActualShift.set( items[2][0])
self.Employee1_FourthDay_ActualShift.set( items[3][0])
self.Employee1_FifthDay_ActualShift.set( items[4][0])
self.Employee1_SixthDay_ActualShift.set( items[5][0])
self.Employee1_SeventhDay_ActualShift.set(items[6][0])