java调用oracle存储过程

转载原文:http://www.blogjava.net/TrampEagle/archive/2005/12/13/23605.html

前辈使我少走弯路,在此感谢!

记录,以备使用.

一:无返回值的存储过程

存储过程为:

CREATE OR REPLACE PROCEDURE TESTA(PARA1 INVARCHAR2,PARA2 INVARCHAR2)  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:

package com.hyq.src;

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:

package com.hyq.src
 
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:

package com.hyq.src;
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.getSring(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) {
      }
    }
  }
}

  

 

 

 

posted @ 2012-09-17 11:52  任满  阅读(173)  评论(0编辑  收藏  举报