Java中CallableStatement调用Oracle存储过程总结

一、无返回值的存储过程调用
CREATE OR REPLACE PROCEDURE PRO_1(PARA1 IN VARCHAR2,PARA2 IN VARCHAR2) AS
BEGIN
INSERT INTO DBO.EMP (ID,NAME) VALUES (PARA1, PARA2);
END PRO_1;

import java.sql.*;
import java.sql.ResultSet;
public class CallProcedureTest1 {
public CallProcedureTest1() {
super();
}
public static void main(String[] args) {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@127.0.0.1:1521:orcl ";
String user = "admin";
String pwd = "password";
Connection conn = null;
CallableStatement cs = null;
ResultSet rs = null;
try {
Class.forName(driver);
conn = DriverManager.getConnection(url, user, pwd);
cs = conn.prepareCall("{ call DBO.PRO_1(?,?) }");
cs.setString(1, "10");
cs.setString(2, "Peter");
cs.execute();
} catch (SQLException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (rs != null) {
rs.close();
}
if (cs != null) {
cs.close();
}
if (conn != null) {
conn.close();
}
} catch (SQLException e) {
}
}
}
}

二、有返回值的存储过程（非结果集）
CREATE OR REPLACE PROCEDURE PRO_2(PARA1 IN VARCHAR2,PARA2 OUT VARCHAR2) AS
BEGIN
SELECT name INTO PARA2 FROM EMP WHERE ID= PARA1;
END PRO_2;

import java.sql.*;
public class CallProcedureTest2 {
public CallProcedureTest2() {
super();
}
public static void main(String[] args) {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";
String user = "admin";
String pwd = "password";
Connection conn = null;
CallableStatement cs = null;
ResultSet rs = null;
try {
Class.forName(driver);
conn = DriverManager.getConnection(url, user, pwd);
cs = conn.prepareCall("{ call DBO.PRO_2(?,?) }");
cs.setString(1, "10");
cs.registerOutParameter(2, Types.VARCHAR);
cs.execute();
String name = cs.getString(2);
System.out.println("name: " + name);
} catch (SQLException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (rs != null) {
rs.close();
}
if (cs != null) {
cs.close();
}
if (conn != null) {
conn.close();
}
} catch (SQLException e) {
}
}
}
}
cs.getString(2)中的数值2并非任意的，而是和存储过程中的out列对应的，如果out是在第一个位置，那就是proc.getString(1)，如果是第三个位置，就是proc.getString(3)，

当然也可以同时有多个返回值，那就是再多加几个out参数了。

三、返回列表
由于oracle存储过程没有返回值，它的所有返回值都是通过out参数来替代的，列表同样也不例外，但由于是集合，所以不能用一般的参数，必须要用pagkage了.所以要分两部分，

1 建一个程序包
CREATE OR REPLACE PACKAGE MYPACKAGE AS
TYPE MY_CURSOR IS REF CURSOR;
end MYPACKAGE;

2 建立存储过程
CREATE OR REPLACE PROCEDURE PRO_3(p_CURSOR out MYPACKAGE.MY_CURSOR) IS
BEGIN
OPEN p_CURSOR FOR SELECT * FROM DBO.EMP;
END PRO_3;
把游标(可以理解为一个指针)作为一个out参数来返回值的。

import java.sql.*;
import java.sql.ResultSet;
public class CallProcedureTest2 {
public CallProcedureTest2() {
super();
}
public static void main(String[] args) {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";
String user = "admin";
String pwd = "password";
Connection conn = null;
CallableStatement cs = null;
ResultSet rs = null;
try {
Class.forName(driver);
conn = DriverManager.getConnection(url, user, pwd);
cs = conn.prepareCall("{ call DBO.PRO_3(?) }");
cs.registerOutParameter(1, oracle.jdbc.OracleTypes.CURSOR);
cs.execute();
rs = (ResultSet) cs.getObject(1);
while (rs.next()) {
System.out.println("\t" + rs.getString(1) + "\t"
+ rs.getString(2) + "\t");
}
} catch (SQLException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (rs != null) {
rs.close();
if (cs != null) {
cs.close();
}
if (conn != null) {
conn.close();
}
}
} catch (SQLException e) {
}
}
}
}
在执行前一定要先把oracle的驱动包放到class路径里，否则会报错。

四、综合的例子

// CallableStatement 1 - 调用一个含有out参数的procedure
CallableStatement cs=conn.prepareCall("{call mytestprc10(?,?,?)}");
cs.setString(1,"10");
cs.setString(2,"20");
cs.registerOutParameter(3,Types.INTEGER); // 注意此处对返回参数的设置方法
cs.executeUpdate();
int t=cs.getInt(3);
System.out.println("CallableStatement 1 :"+t);
cs.close();

// CallableStatement 2 - 调用一个返回数值型参数的函数
CallableStatement cs2=conn.prepareCall("{ ? = call mytestpkg1.myf_mult(?,?)}");
cs2.registerOutParameter(1,Types.INTEGER);// 注意此处对返回参数的设置方法
cs2.setInt(2,2);
cs2.setInt(3,3);
cs2.executeUpdate();
int t2=cs2.getInt(1);
System.out.println("CallableStatement 2 : " + t2);
cs2.close();

//CallableStatement 3 - 调用一个返回Cursor类型参数的函数
CallableStatement cs3=conn.prepareCall("{?=call mytestpkg1.myf_rtnrcd(?)}");
cs3.registerOutParameter(1, OracleTypes.CURSOR); // 注意此处对返回参数的设置方法，和上面的有所不同
cs3.setInt(2,20);
cs3.executeUpdate();
ResultSet rs3=(ResultSet)cs3.getObject(1);
rs3.next();
System.out.println("CallableStatement 3 : " + rs3.getString(2));
rs3.close();
cs3.close();

原帖地址：http://wenku.baidu.com/view/34d4be13227916888486d71d.html