JAVA调用oracle三种存储过程实例

http://blog.csdn.net/ice_spar/archive/2007/10/20/1834841.aspx




JAVA调用存储过程:
几经挫折,但总算搞通了,为了避免后来者少走弯路,特记述与此,同时亦对自己进行鼓励。

创建测试用表:

CREATE TABLE T_TEST(
I_ID NVARCHAR(20),
I_NAME NVARCHAR(20)
)一:无返回值的存储过程

1、在SQL*PLUS中建立存储过程:


CREATE OR REPLACE PROCEDURE TESTA(PARA1 IN VARCHAR2,PARA2 IN VARCHAR2)  AS

BEGIN

   INSERT INTO T_TEST (I_ID,I_NAME) VALUES (PARA1, PARA2);

END TESTA;
2、相应的JAVA程序:

package com.my.test;

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 TestProcedureOne ...{
    public TestProcedureOne() ...{

      }

      public static void main(String[] args )...{

        String driver = "oracle.jdbc.driver.OracleDriver";

        String strUrl = "jdbc:oracle:thin:@192.168.10.216:1521:ctbu";

        Statement stmt = null;

        ResultSet rs = null;

        Connection conn = null;

        CallableStatement cstmt = null;

     

        try ...{

          Class.forName(driver);

          conn =  DriverManager.getConnection(strUrl, "dbname", "password");

          CallableStatement proc = null;

          proc = conn.prepareCall("{ call dbname.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) ...{

          }

        }

      }

    }

二:有返回值的存储过程(非列表)

1、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;2、JAVA代码:

package com.my.test;
public class TestProcedureTWO ...{

  public TestProcedureTWO() ...{

  }

  public static void main(String[] args )...{

    String driver = "oracle.jdbc.driver.OracleDriver";

    String strUrl = "jdbc:oracle:thin:@192.168.10.216:1521:ctbu";

    Statement stmt = null;

    ResultSet rs = null;

    Connection conn = null;

    try ...{

      Class.forName(driver);

      conn =  DriverManager.getConnection(strUrl, "dbname", "password");

      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、在SQL*PLUS中建一个程序包

CREATE OR REPLACE PACKAGE TESTPACKAGE  AS 
TYPE Test_CURSOR IS REF CURSOR;
procedure TESTC(cur_ref out Test_CURSOR);
end TESTPACKAGE; 建立存储过程,存储过程为:


create or replace package body TESTPACKAGE as
procedure TESTC(cur_ref out Test_CURSOR) is
begin  
OPEN cur_ref FOR SELECT * FROM T_TEST;
end TESTC;
END TESTPACKAGE;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。

JAVA程序如下:

package com.my.test;

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 TestProcedureOne ...{
    public TestProcedureOne() ...{

      }

      public static void main(String[] args )...{

        String driver = "oracle.jdbc.driver.OracleDriver";

        String strUrl = "jdbc:oracle:thin:@192.168.10.216:1521:ctbu";

        Statement stmt = null;

        ResultSet rs = null;

        Connection conn = null;

        CallableStatement cstmt = null;

     

        try ...{

          Class.forName(driver);

          conn = DriverManager.getConnection(strUrl,"databasename" "password");

          CallableStatement proc = null;

          proc = conn.prepareCall("{ call cqsb.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) ...{

          }

        }

      }

    } 特别注意:
1、在执行前一定要先把oracle的驱动包放到class路径里。

2、Toad在我建立存储过程中搞了很多莫名的错误,多数是没有创建成功而不报错,或者是创建有误而不提示,应当引起重视。所以最好还是在SQL*PLUS玩这些。

3、在SQL*PLUS中的换行是无效的,要换行的时候一定要空格结尾,特别是你直接复制代码的时候!



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