java下实现调用oracle的存储过程和函数

在oracle下创建一个test的账户，然后按一下步骤执行：

1.创建表：STOCK_PRICES

--创建表格
CREATE TABLE STOCK_PRICES(
    RIC VARCHAR(6) PRIMARY KEY,
    PRICE NUMBER(7,2),
    UPDATED DATE );

2.插入测试数据：

--插入数据
INSERT INTO stock_prices values('1111',1.0,SYSDATE);
INSERT INTO stock_prices values('1112',2.0,SYSDATE);
INSERT INTO stock_prices values('1113',3.0,SYSDATE);
INSERT INTO stock_prices values('1114',4.0,SYSDATE);

3.建立一个返回游标： PKG_PUB_UTILS

--建立一个返回游标
CREATE OR REPLACE PACKAGE PKG_PUB_UTILS IS
    --动态游标
    TYPE REFCURSOR IS REF CURSOR;
END PKG_PUB_UTILS;

4.创建和存储过程：P_GET_PRICE

--创建存储过程
CREATE OR REPLACE PROCEDURE P_GET_PRICE
(
  AN_O_RET_CODE OUT NUMBER,
  AC_O_RET_MSG  OUT VARCHAR2,
  CUR_RET OUT PKG_PUB_UTILS.REFCURSOR,
  AN_I_PRICE IN NUMBER
) 
IS
BEGIN
    AN_O_RET_CODE := 0;
    AC_O_RET_MSG  := '操作成功';
    
    OPEN CUR_RET FOR
        SELECT * FROM STOCK_PRICES WHERE PRICE<AN_I_PRICE;
EXCEPTION
    WHEN OTHERS THEN
        AN_O_RET_CODE := -1;
        AC_O_RET_MSG  := '错误代码:' || SQLCODE || CHR(13) || '错误信息:' || SQLERRM;
END P_GET_PRICE;

5.创建函数：

--创建函数：F_GET_PRICE
CREATE OR REPLACE FUNCTION F_GET_PRICE(v_price IN NUMBER)
    RETURN PKG_PUB_UTILS.REFCURSOR
AS
    stock_cursor PKG_PUB_UTILS.REFCURSOR;
BEGIN
    OPEN stock_cursor FOR
    SELECT * FROM stock_prices WHERE price < v_price;
    RETURN stock_cursor;
END;

6.JAVA调用存储过程返回结果集

代码示例：JDBCoracle10G_INVOKEPROCEDURE.java

import java.sql.*;
import oracle.jdbc.OracleCallableStatement;
import oracle.jdbc.OracleTypes;

/* 本例是通过调用oracle的存储过程来返回结果集:
 * oracle 9i、10G 的jdbc由1个jar包组成：classes12.zip
 */
public class JDBCoracle10G_INVOKEPROCEDURE {
    Connection conn = null;
    Statement statement = null;
    ResultSet rs = null;
    CallableStatement stmt = null;

    String driver;
    String url;
    String user;
    String pwd;
    String sql;
    String in_price;

    public JDBCoracle10G_INVOKEPROCEDURE() 
    {
        driver = "oracle.jdbc.driver.OracleDriver";
        url = "jdbc:oracle:thin:@localhost:1521:ORCL";
        // oracle 用户
        user = "test";
        // oracle 密码
        pwd = "test";
        init();
        // mysid：必须为要连接机器的sid名称，否则会包以下错：
        // java.sql.SQLException: Io 异常: Connection
        // refused(DESCRIPTION=(TMP=)(VSNNUM=169870080)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
        // 参考连接方式:
        // Class.forName( "oracle.jdbc.driver.OracleDriver" );
        // cn = DriverManager.getConnection(
        // "jdbc:oracle:thin:@MyDbComputerNameOrIP:1521:ORCL", sUsr, sPwd );

    }

    public void init() {
        System.out.println("oracle jdbc test");
        try {
            Class.forName(driver);
            System.out.println("driver is ok");
            conn = DriverManager.getConnection(url, user, pwd);
            System.out.println("conection is ok");
            statement = conn.createStatement();
            // conn.setAutoCommit(false);
            // 输入参数
            in_price = "3.0";
            // 调用函数
            stmt = conn.prepareCall("call P_GET_PRICE(?,?,?,?)");
            stmt.registerOutParameter(1, java.sql.Types.FLOAT);
            stmt.registerOutParameter(2, java.sql.Types.CHAR);
            stmt.registerOutParameter(3, oracle.jdbc.OracleTypes.CURSOR);
            stmt.setString(4, in_price);
            stmt.executeUpdate();
            int retCode = stmt.getInt(1);
            String retMsg = stmt.getString(2);
            if (retCode == -1) { // 如果出错时，返回错误信息
                System.out.println("报错！");
            } else {
                // 取的结果集的方式一：
                rs = ((OracleCallableStatement) stmt).getCursor(3);
                // 取的结果集的方式二：
                // rs = (ResultSet) stmt.getObject(3);
                String ric;
                String price;
                String updated;
                // 对结果进行输出
                while (rs.next()) {
                    ric = rs.getString(1);
                    price = rs.getString(2);
                    updated = rs.getString(3);
                    System.out.println("ric:" + ric + ";-- price:" + price
                            + "; --" + updated + "; ");
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            System.out.println("close ");
        }
    }

    public static void main(String args[])// 自己替换［］
    {
        new JDBCoracle10G_INVOKEPROCEDURE();
    }
}

7.开发JAVA调用函数返回结果集

代码示例：JDBCoracle10G_INVOKEFUNCTION.java

import java.sql.*;
import oracle.jdbc.OracleCallableStatement;
import oracle.jdbc.OracleTypes;

/*
 /* 本例是通过调用oracle的函数来返回结果集:
 * oracle 9i、10G 的jdbc由1个jar包组成：classes12.zip  
 */
public class JDBCoracle10G_INVOKEFUNCTION {
    Connection conn = null;
    Statement statement = null;
    ResultSet rs = null;
    CallableStatement stmt = null;

    String driver;
    String url;
    String user;
    String pwd;
    String sql;
    String in_price;

    public JDBCoracle10G_INVOKEFUNCTION()
    {
        driver = "oracle.jdbc.driver.OracleDriver";
        url = "jdbc:oracle:thin:@localhost:1521:ORCL";
        // oracle 用户
        user = "test";
        // oracle 密码
        pwd = "test";
        init();
        // mysid：必须为要连接机器的sid名称，否则会包以下错：
        // java.sql.SQLException: Io 异常: Connection
        // refused(DESCRIPTION=(TMP=)(VSNNUM=169870080)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
        // 参考连接方式:
        // Class.forName( "oracle.jdbc.driver.OracleDriver" );
        // cn = DriverManager.getConnection(
        // "jdbc:oracle:thin:@MyDbComputerNameOrIP:1521:ORCL", sUsr, sPwd );
    }

    public void init() {
        System.out.println("oracle jdbc test");
        try {
            Class.forName(driver);
            System.out.println("driver is ok");
            conn = DriverManager.getConnection(url, user, pwd);
            System.out.println("conection is ok");
            statement = conn.createStatement();
            // conn.setAutoCommit(false);
            // 输入参数
            in_price = "5.0";
            // 调用函数
            stmt = conn.prepareCall("{? = call F_GET_PRICE(?)}");
            // stmt.registerOutParameter(1, java.sql.Types.FLOAT);
            // stmt.registerOutParameter(2, java.sql.Types.CHAR);
            stmt.registerOutParameter(1, oracle.jdbc.OracleTypes.CURSOR);
            stmt.setString(2, in_price);
            stmt.executeUpdate();
            // 取的结果集的方式一：
            rs = ((OracleCallableStatement) stmt).getCursor(1);
            // 取的结果集的方式二：
            // rs = (ResultSet) stmt.getObject(1);
            String ric;
            String price;
            String updated;

            while (rs.next()) {
                ric = rs.getString(1);
                price = rs.getString(2);
                updated = rs.getString(3);
                System.out.println("ric:" + ric + ";-- price:" + price + "; --"
                        + updated + "; ");
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            System.out.println("close ");
        }
    }

    public static void main(String args[])// 自己替换［］
    {
        new JDBCoracle10G_INVOKEFUNCTION();
    }
}