jdbc database connection is successful, but can not read the contents of the database

rt Help ah , worry for a long time . ps this cloud adapted version really good.
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point code stickers out ah , do database is empty
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did you get a resultset not traverse the result set .
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either no data in the database , or that you have a problem reading the database approach
you carefully check the
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first look at whether there is data in the database , if the query look correct .
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consequently do not stick out your high people how to help you .
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seeking an exception , seeking wrong !
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god Ma adapter ?
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estimate is advertise .
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wrong database table it
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did not abnormal ?
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nothing tips ?
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this issue ; commit operation is not performed due to have been resolved.