java 调用oracle函数返回结果集

在oracle下创建一个test的账户，然后

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：

--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

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

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();

}

}