一:无返回值的存储过程
存储过程为:
CREATE OR REPLACE PROCEDURE TESTA(PARA1 IN VARCHAR2,PARA2 IN VARCHAR2) AS BEGIN INSERT INTO HYQ.B_ID (I_ID,I_NAME) VALUES (PARA1, PARA2); END TESTA;
然后呢,在java里调用时就用下面的代码:
import java.sql.*; import java.sql.ResultSet; public class TestProcedureOne { public TestProcedureOne() { } public static void main(String[] args ){ String driver = "oracle.jdbc.driver.OracleDriver"; String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521: hyq "; Statement stmt = null; ResultSet rs = null; Connection conn = null; CallableStatement cstmt = null; try { Class.forName(driver); conn = DriverManager.getConnection(strUrl, " hyq ", " hyq "); CallableStatement proc = null; proc = conn.prepareCall("{ call HYQ.TESTA(?,?) }"); proc.setString(1, "100"); proc.setString(2, "TestOne"); proc.execute(); } catch (SQLException ex2) { ex2.printStackTrace(); } catch (Exception ex2) { ex2.printStackTrace(); } finally{ try { if(rs != null){ rs.close(); if(stmt!=null){ stmt.close(); } if(conn!=null){ conn.close(); } } } catch (SQLException ex1) { } } } }
当然了,这就先要求要建张表TESTTB,里面两个字段(I_ID,I_NAME)。
二:有返回值的存储过程(非列表)
存储过程为:
CREATE OR REPLACE PROCEDURE TESTB(PARA1 IN VARCHAR2,PARA2 OUT VARCHAR2) AS BEGIN SELECT INTO PARA2 FROM TESTTB WHERE I_ID= PARA1; END TESTB;
在java里调用时就用下面的代码:
public class TestProcedureTWO { public TestProcedureTWO() { } public static void main(String[] args ){ String driver = "oracle.jdbc.driver.OracleDriver"; String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521:hyq"; Statement stmt = null; ResultSet rs = null; Connection conn = null; try { Class.forName(driver); conn = DriverManager.getConnection(strUrl, " hyq ", " hyq "); CallableStatement proc = null; proc = conn.prepareCall("{ call HYQ.TESTB(?,?) }"); proc.setString(1, "100"); proc.registerOutParameter(2, Types.VARCHAR); proc.execute(); String testPrint = proc.getString(2); System.out.println("=testPrint=is="+testPrint); } catch (SQLException ex2) { ex2.printStackTrace(); } catch (Exception ex2) { ex2.printStackTrace(); } finally{ try { if(rs != null){ rs.close(); if(stmt!=null){ stmt.close(); } if(conn!=null){ conn.close(); } } } catch (SQLException ex1) { } } } }
}
注意,这里的proc.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。如下:
CREATE OR REPLACE PACKAGE TESTPACKAGE AS TYPE Test_CURSOR IS REF CURSOR; end TESTPACKAGE;
2,建立存储过程,存储过程为:
CREATE OR REPLACE PROCEDURE TESTC(p_CURSOR out TESTPACKAGE.Test_CURSOR) IS BEGIN OPEN p_CURSOR FOR SELECT * FROM HYQ.TESTTB; END TESTC;
可以看到,它是把游标(可以理解为一个指针),作为一个out 参数来返回值的。
在java里调用时就用下面的代码:
import java.sql.*; import java.io.OutputStream; import java.io.Writer; import java.sql.PreparedStatement; import java.sql.ResultSet; import oracle.jdbc.driver.*; public class TestProcedureTHREE { public TestProcedureTHREE() { } public static void main(String[] args ){ String driver = "oracle.jdbc.driver.OracleDriver"; String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521:hyq"; Statement stmt = null; ResultSet rs = null; Connection conn = null; try { Class.forName(driver); conn = DriverManager.getConnection(strUrl, "hyq", "hyq"); CallableStatement proc = null; proc = conn.prepareCall("{ call hyq.testc(?) }"); proc.registerOutParameter(1,oracle.jdbc.OracleTypes.CURSOR); proc.execute(); rs = (ResultSet)proc.getObject(1); while(rs.next()) { System.out.println("<tr><td>" + rs.getString(1) + "</td><td>"+rs.getString(2)+"</td></tr>"); } } catch (SQLException ex2) { ex2.printStackTrace(); } catch (Exception ex2) { ex2.printStackTrace(); } finally{ try { if(rs != null){ rs.close(); if(stmt!=null){ stmt.close(); } if(conn!=null){ conn.close(); } } } catch (SQLException ex1) { } } } }
另类Java存储过程调用方法封装