Java输出参数调用过程

Question

I have this procedure and i want to call it from Java

declare 
    output number; 
begin 
    output := procedure_name(dateType => 'D', dateFrom => '20130825', dateTo => '20130830'); 
end;

I have used StoredProcedure and i have set the parameters for dateType, dateFrom and dateTo but my question is how do I retrieve the output parameter

This is what i have done so far:

StoredProcedureQuery storedProcedure = em.createStoredProcedureQuery("procedure_name");

    storedProcedure.registerStoredProcedureParameter("output",String.class , ParameterMode.OUT);
    storedProcedure.registerStoredProcedureParameter("dateType", String.class, ParameterMode.IN);
    storedProcedure.registerStoredProcedureParameter("dateFrom", String.class, ParameterMode.IN);
    storedProcedure.registerStoredProcedureParameter("dateTo", String.class, ParameterMode.IN);


    storedProcedure.setParameter("dateType", "YYYYMMDD");
    storedProcedure.setParameter("dateFrom", "20130825");
    storedProcedure.setParameter("dateTo", "20130830");

    storedProcedure.execute();

Answer 1

您调用 storedProcedure.getOutputParameterValue("output") 。

Answer 2

You can call below code to get the same..

(String)storedProcedure.getOutputParameterValue("output");

If above is throwing any error it means you are having issue with procedure