JAVA调用Oracle存储过程和函数
2017-10-25 18:21
323 查看
连接数据库的工具类:
import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class JDBCUtils { private static String driver = "oracle.jdbc.OracleDriver"; private static String url = "jdbc:oracle:thin:@192.168.56.101:1521:orcl"; private static String user = "scott"; private static String password = "tiger"; static{ try { Class.forName(driver); } catch (ClassNotFoundException e) { throw new ExceptionInInitializerError(e); } } public static Connection getConnection(){ try { return DriverManager.getConnection(url, user, password); } catch (SQLException e) { e.printStackTrace(); } return null; } public static void release(Connection conn,Statement st,ResultSet rs){ if(rs != null){ try { rs.close(); } catch (SQLException e) { e.printStackTrace(); }finally{ rs = null; //----> Java GC } } if(st != null){ try { st.close(); } catch (SQLException e) { e.printStackTrace(); }finally{ st = null; } } if(conn != null){ try { conn.close(); } catch (SQLException e) { e.printStackTrace(); }finally{ conn = null; } } } }
调用存储过程和函数的JAVA代码:
import java.sql.CallableStatement; import java.sql.Connection; import java.sql.ResultSet; import oracle.jdbc.OracleCallableStatement; import oracle.jdbc.OracleTypes; import org.junit.Test; import JDBCUtils; public class TestOracle { /* * create or replace procedure queryEmpInfo(eno in number, pename out varchar2, psal out number, pjob out varchar2) */ @Test public void testProcedure(){ //{call <procedure-name>[(<arg1>,<arg2>, ...)]} String sql = "{call queryEmpInfo(?,?,?,?)}"; Connection conn = null; CallableStatement call = null; try { conn = JDBCUtils.getConnection(); call = conn.prepareCall(sql); //对于in参数,赋值 call.setInt(1, 7839); //对于out参数,申明 call.registerOutParameter(2, OracleTypes.VARCHAR); call.registerOutParameter(3, OracleTypes.NUMBER); call.registerOutParameter(4, OracleTypes.VARCHAR); //执行 call.execute(); //取出结果 String name = call.getString(2); double sal = call.getDouble(3); String job = call.getString(4); System.out.println(name+"\t"+sal+"\t"+job); } catch (Exception e) { e.printStackTrace(); }finally{ JDBCUtils.release(conn, call, null); } } /* * create or replace function queryEmpIncome(eno in number) return number */ @Test public void testFunction(){ //{?= call <procedure-name>[(<arg1>,<arg2>, ...)]} String sql = "{?=call queryEmpIncome(?)}"; Connection conn = null; CallableStatement call = null; try { conn = JDBCUtils.getConnection(); call = conn.prepareCall(sql); //对于out参数,申明 call.registerOutParameter(1, OracleTypes.NUMBER); //对于in参数,赋值 call.setInt(2, 7839); //执行 call.execute(); //取出结果 double income = call.getDouble(1); System.out.println(income); } catch (Exception e) { e.printStackTrace(); }finally{ JDBCUtils.release(conn, call, null); } } /* 查询某个部门中所有员工的所有信息 包头 CREATE OR REPLACE PACKAGE MYPACKAGE AS type empcursor is ref cursor; procedure queryEmpList(dno in number,empList out empcursor); END MYPACKAGE; 包体 CREATE OR REPLACE PACKAGE BODY MYPACKAGE AS procedure queryEmpList(dno in number,empList out empcursor) AS BEGIN open empList for select * from emp where deptno=dno; END queryEmpList; END MYPACKAGE; */ @Test public void testCursor(){ String sql = "{call MYPACKAGE.queryEmpList(?,?)}"; Connection conn = null; CallableStatement call = null; ResultSet rs = null; try { conn = JDBCUtils.getConnection(); call = conn.prepareCall(sql); call.setInt(1, 20); call.registerOutParameter(2, OracleTypes.CURSOR); call.execute(); //取出集合 rs = ((OracleCallableStatement)call).getCursor(2); while(rs.next()){ String name = rs.getString("ename"); double sal = rs.getDouble("sal"); System.out.println(name+"\t"+sal); } } catch (Exception e) { e.printStackTrace(); }finally{ JDBCUtils.release(conn, call, rs); } } }
相关文章推荐
- Oracle存储过程、存储函数以及Java程序调用存储过程和存储函数
- Java中使用ibatis调用Oracle存储过程和函数
- java调用 Oracle存储过程(或函数) 返回游标、动态数组与
- Java调用Oracle存储过程和函数(三)
- JAVA 通过 JNA 调用 C程序 dll 函数传入中文参数问题
- java多个子类自动调用父类不包含的函数
- Java调用Oracle存储过程
- Oracle存储过程以及java调用
- Java和C++构造函数调用其它函数
- 用java实现Hadoop中HDFS的函数调用
- java调用命令行Runtime.getRuntime().exec()函数碰到的阻塞问题
- java调用oracle存储过程
- Java调用Oracle存储过程
- 在java中调用储存函数
- java调用oracle存储过程的自定义类型(可变数组)。
- 利用反射函数实现一键清除缓存,并获取清除的缓存数目。调用反射函数类出错java.lang.NoSuchMethodException: getPackageSizeInfo.
- 【转载】Android之webkit内核JNI层与Java层 函数互相调用方法
- java中对象多态时成员变量,普通成员函数及静态成员函数的调用情况
- java记——函数调用输出倒序数
- oracle存储过程及Java调用