如何在JDBC中调用存储过程

对于家庭作业，我必须创建一个pl / sql存储过程来将一个facutly成员添加到数据库

CREATE OR REPLACE PROCEDURE ADDFACULTYDEPTSAL (facid IN NUMBER, facname IN VARCHAR, depID IN NUMBER) AS sal NUMBER; BEGIN CALCSALDEPT(depID, sal); IF sal >= 50000 THEN sal := sal*.9; ELSE IF sal >= 30000 THEN sal := sal*.8; END IF; END IF; INSERT INTO FACULTY(fid, fname, deptid, salary) VALUES(facid, facname, depID, sal); END ADDFACULTYDEPTSAL; 

完成后，我需要为所述程序进行java调用，我已经厌倦了：

 Statement stmt = dbConnection.createStatement(); String in; if(a == 1){ in = "ADDFACULTYDEPTSAL(" + fid.getText() + "','" + fname.getText() + "','" + did.getText() + "')"; } else { in = "ADDFACULTYUNISAL(" + fid.getText() + "','" + fname.getText() + "','" + did.getText() + "')"; } stmt.executeQuery(in); 

我在上面的try catch块中继续抛出错误。 我根据我在其他网站上看到的字符串在“in”中尝试了几个变体：in =“{call ADDFACULTYDEPSAL … in =”call ADDFACULTYDEPSAL …

看这里： MySQL连接器指南我也尝试将stmt更改为可调用语句：

 CallableStatement stmt; if(a == 1){ stmt = dbConnection.prepareCall("{call ADDFACULTYDEPTSAL(?,?,?)}"); } else { stmt = dbConnection.prepareCall("{call ADDFACULTYUNISAL(?,?,?)}"); } 

但是，尝试这种方式似乎不起作用，因为我需要将两个以上的变量传递给过程。

谁能告诉我我做错了什么？

Answer 1

你几乎在那里：

 String call = (a == 1 ? "{call ADDFACULTYDEPTSAL(?,?,?)}" : "{call ADDFACULTYUNISAL(?,?,?)}"); try (CallableStatement stmt = dbConnection.prepareCall(call)) { stmt.setInt(1, Integer.parseInt(fid.getText())); stmt.setString(2, fname.getText()); stmt.setInt(3, Integer.parseInt(did.getText())); stmt.execute(); }