标签:oracle
-- 定义存储过程 create or replace procedure get_rax(salary in number,rax out number) as --需要交税的钱 bal number; begin bal := salary - 3500; if bal<=1500 then rax := bal * 0.03 - 0; elsif bal<=4500 then rax := bal * 0.1 - 105; elsif bal<=9000 then rax := bal * 0.2 - 555; elsif bal<=35000 then rax := bal * 0.25 - 1005; elsif bal<=55000 then rax := bal * 0.3 - 2755; elsif bal<=80000 then rax := bal * 0.35 - 5505; else rax := bal * 0.45 - 13505; end if; end; / set serveroutput on; -- 调用存储过程 declare sal number := &salary; rax number; begin get_rax(sal,rax); dbms_output.put_line(sal || ‘元工资应该交税‘ || rax || ‘元‘); end; /
| oracle | ojdbc5.jar |
| c3p0 | c3p0-0.9.1.2.jar c3p0-config.xml |
c3p0-config.xml
<c3p0-config> <default-config> <property name="jdbcUrl">jdbc:oracle:thin:@127.0.0.1:1521:orcl</property> <property name="driverClass">oracle.jdbc.driver.OracleDriver</property> <property name="user">scott</property> <property name="password">tiger</property> <property name="initialPoolSize">3</property> <property name="maxPoolSize">6</property> <property name="maxIdleTime">1000</property> </default-config> </c3p0-config>
JDBCUtils.java
package com.rk.utils;
import java.sql.Connection;
import com.mchange.v2.c3p0.ComboPooledDataSource;
public class JDBCUtils {
private static ComboPooledDataSource dataSource = new ComboPooledDataSource();
public static Connection getConnection() throws Exception{
return dataSource.getConnection();
}
public static void closeQuietly(AutoCloseable ac){
if(ac != null){
try {
ac.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}CallProc.java
package com.rk.test;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.Types;
import com.rk.utils.JDBCUtils;
/**
* 演示java-jdbc调用oracle过程
*/
public class CallProc {
public static void main(String[] args) throws Exception{
String sql = "{call get_rax(?,?)}";
Connection conn = JDBCUtils.getConnection();
CallableStatement cstmt = conn.prepareCall(sql);
//为第一个?号设置值,从1开始
cstmt.setInt(1, 7000);
//为第二个?注册输出类型
cstmt.registerOutParameter(2, Types.INTEGER);
//执行调用过程
cstmt.execute();
//接收过程的返回值,即第二个?号
int rax = cstmt.getInt(2);
//显示
System.out.println("7000元工资应该交税"+rax+"元");
JDBCUtils.closeQuietly(cstmt);
JDBCUtils.closeQuietly(conn);
}
}--定义函数 create or replace function findEmpNameAndJobAndSal(pempno in number,pjob out varchar2,psal out number) return varchar2 as pename emp.ename%type; begin select ename,job,sal into pename,pjob,psal from emp where empno = pempno; return pename; end; / --调用函数 declare pename emp.ename%type; pjob emp.job%type; psal emp.sal%type; begin pename := findEmpNameAndJobAndSal(7788,pjob,psal); dbms_output.put_line(‘7788‘||‘--‘||pename||‘--‘||pjob||‘--‘||psal); end; /
package com.rk.test;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.Types;
import com.rk.utils.JDBCUtils;
/**
* 演示java-jdbc调用oracle函数
*/
public class CallFunc {
public static void main(String[] args) throws Exception {
String sql = "{? = call findEmpNameAndJobAndSal(?,?,?)}";
Connection conn = JDBCUtils.getConnection();
CallableStatement cstmt = conn.prepareCall(sql);
//为第一个?注册输出类型
cstmt.registerOutParameter(1, Types.VARCHAR);
//为第二个?注入值
cstmt.setInt(2, 7788);
//为第三个?注册输出类型
cstmt.registerOutParameter(3, Types.VARCHAR);
//为第四个?注册输出类型
cstmt.registerOutParameter(4, Types.INTEGER);
//执行函数调用
cstmt.execute();
//分别获取1,3,4占位符的值
String ename = cstmt.getString(1);
String job = cstmt.getString(3);
int sal = cstmt.getInt(4);
//显示
System.out.println("7788--"+ename+"--"+job+"--"+sal);
JDBCUtils.closeQuietly(cstmt);
JDBCUtils.closeQuietly(conn);
}
}Oracle系列:(33)JDBC访问Oracle的存储过程和存储函数
标签:oracle
原文地址:http://lsieun.blog.51cto.com/9210464/1857878