Java 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存储过程来向数据库添加facutly成员Java 如何在JDBC中调用存储过程,java,oracle,stored-procedures,jdbc,plsql,Java,Oracle,Stored Procedures,Jdbc,Plsql,对于家庭作业,我必须创建一个pl/sql存储过程来向数据库添加facutly成员 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; EL
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,我需要对上述过程进行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);
我在一个try-catch块中有上述内容,该块不断抛出错误。根据我在其他网站上看到的内容,我在字符串“in”上尝试了几种变体:
in=“{调用AddFacUltyDPSAL…”。。。
in=“调用ADDFACULTYDEPSAL…”
看看这里:
我还尝试将stmt更改为可调用语句,如下所示:
CallableStatement stmt;
if(a == 1){
stmt = dbConnection.prepareCall("{call ADDFACULTYDEPTSAL(?,?,?)}");
} else {
stmt = dbConnection.prepareCall("{call ADDFACULTYUNISAL(?,?,?)}");
}
但是,尝试这种方法似乎不起作用,因为我需要向过程中传递两个以上的变量
有人能告诉我我做错了什么吗?你差点就到了:
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();
}
@Andreas,很好的解释。但是,您能建议我如何使用java存储和获取存储过程的结果吗?