[命名参数未在jdbc中正确传递

Question

我正在使用JDBC CallableStatement调用具有命名参数的过程。

步骤：

create or replace PROCEDURE VIST_COMP(I_STUDY IN VARCHAR2, I_STARTDATE IN VARCHAR2, I_ENDDATE IN VARCHAR2, I_EMPLOYEE IN VARCHAR2, I_EMPLOYEE_OPTIONAL IN NUMBER, I_SPONSOR IN VARCHAR2, I_SPONSOR_OPTIONAL IN NUMBER, p_rc OUT SYS_REFCURSOR)
AS
o_cursor SYS_REFCURSOR;
sqlqry clob;
BEGIN
  //procedure code 
END VIST_COMP;

Java代码：

String runSP = "call VIST_COMP(:protocols,:alertStartDate,:alertEndDate,:employee,:employeeOptional,:sponsor,:sponsorOptional, :out_cursor)";         
try (Connection conn = DriverManager.getConnection(
"jdbc:oracle:thin:localhost:389/oracle", "username", "password");
CallableStatement callableStatement = conn.prepareCall(runSP)) {
   callableStatement.setString("protocols","12345");
   callableStatement.setString("alertStartDate", "03-Apr-2019");
   callableStatement.setString("alertEndDate", "03-Jun-2019");
   callableStatement.setString("employee",null);
   callableStatement.setInt("employeeOptional",1);
   callableStatement.setString("sponsor", "abc");
   callableStatement.setInt("sponsorOptional",0);

   callableStatement.registerOutParameter("out_cursor", OracleTypes.CURSOR);

   // run it
   callableStatement.execute();
   ResultSet rset = (ResultSet)   callableStatement.getObject("out_cursor");

   while(rset.next()) {
     System.out.println(rset.getString("LABEL_VALUE"));
   }
}catch(Exception e) {
   e.printStackTrace();
}

上面的代码运行良好，我也收到了ResultSet。但是问题是，如果我更改设置参数的顺序，它将不起作用。例如，如果我将sponsor设置为高于日期，例如以下给出错误。

callableStatement.setString("protocols","12345");
callableStatement.setString("alertStartDate", "03-Apr-2019");
callableStatement.setString("sponsor", "abc");
callableStatement.setString("alertEndDate", "03-Jun-2019");
callableStatement.setString("employee",null);
callableStatement.setInt("employeeOptional",1);
callableStatement.setInt("sponsorOptional",0);

DB错误是

ORA-01858：在一个数字为预期

ORA-06512：位于“ VIST_COMP”，行266

使用构建路径Java 1.7（已安装JDK 1.8），Oracle 12c，Ojdbc6.jar。>>

我正在使用JDBC CallableStatement调用带有命名参数的过程。过程：创建或替换PROCEDURE VIST_COMP（I_STUDY IN VARCHAR2，I_STARTDATE IN VARCHAR2，I_ENDDATE IN VARCHAR2，...

Answer 1

如果要使用命名参数来调用Oracle存储过程，可以考虑使用morejdbc。您的通话将如下所示：