Biegral Blog

步骤：

1、编写Oracle存储过程

2、编写数据库获取连接工具类

3、编写简单应用调用存储过程

实现：

1、Oracle存储过程：

/*测试表*/
create table test(
    id varchar2(32),
    name varchar2(32)
);

/*存储过程 插入数据*/    
CREATE OR REPLACE PROCEDURE insert_procedure(
    PARA1 IN VARCHAR2,
    PARA2 IN VARCHAR2
) AS
BEGIN
  INSERT INTO test (id, name) VALUES (PARA1, PARA2);
END insert_procedure;

/*存储过程 返回结果集*/
CREATE OR REPLACE PROCEDURE select_procedure(
    para_id IN VARCHAR2,
    name OUT sys_refcursor /* 这个sys_refcursor类型在SYS.STANDARD包中 */
) AS
BEGIN
  OPEN name FOR
    SELECT * FROM test WHERE id = para_id;
END;

2、JDBC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 DBUtil {
    public static final String DRIVER = "oracle.jdbc.driver.OracleDriver";
    public static final String URL = "jdbc:oracle:thin:@localhost:1521/orcl";
    public static final String USERNAME = "pfm";
    public static final String PASSWORD = "pfm";

    /**
     * 通过静态代码块 注册数据库驱动
     */
    static {
        try {
            Class.forName(DRIVER);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }

    /**
     * 获得Connection
     * 
     * @return
     */
    public static Connection getConnection() {
        Connection conn = null;
        try {
            conn = DriverManager.getConnection(URL, USERNAME, PASSWORD);
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return conn;
    }

    /**
     * 获得Statement
     * 
     * @return
     */
    public static Statement getStatement() {
        Statement st = null;
        try {
            st = getConnection().createStatement();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return st;
    }

    /**
     * 关闭ResultSet
     * 
     * @param rs
     */
    public static void closeResultSet(ResultSet rs) {
        if (rs != null) {
            try {
                rs.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 关闭Statement
     * 
     * @param st
     */
    public static void closeStatement(Statement st) {
        if (st != null) {
            try {
                st.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 关闭Connection
     * 
     * @param conn
     */
    public static void closeConnection(Connection conn) {
        if (conn != null) {
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 关闭全部
     * 
     * @param rs
     * @param sta
     * @param conn
     */
    public static void closeAll(ResultSet rs, Statement sta, Connection conn) {
        closeResultSet(rs);
        closeStatement(sta);
        closeConnection(conn);
    }

}

3、调用存储过程：

import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import oracle.jdbc.driver.OracleTypes;

/**
 * 测试调用存储过程
 * 
 */
public class StoredTest {
    public static void main(String[] args) {
        insert_call();
        //select_call();
    }

    /**
     * 执行存储过程 插入数据
     */
    public static void insert_call() {
        Connection conn = DBUtil.getConnection();
        PreparedStatement pst = null;

        CallableStatement proc = null; // 创建执行存储过程的对象
        try {
            proc = conn.prepareCall("{ call insert_procedure(?,?) }");
            proc.setString(1, "1"); // 设置第一个输入参数
            proc.setString(2, "hello call"); // 设置第一个输入参数
            proc.execute();// 执行

        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            try {
                // 关闭IO流
                proc.close();
                DBUtil.closeAll(null, pst, conn);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 执行存储过程 查询数据
     */
    public static void select_call() {
        Connection conn = DBUtil.getConnection();

        CallableStatement stmt;
        try {
            stmt = conn.prepareCall("{ call select_procedure(?, ?) }"); // 用此调用方法不能实现多行语法
            stmt.setString(1, "1");
            stmt.registerOutParameter(2, OracleTypes.CURSOR);
            stmt.execute();
            ResultSet rs = (ResultSet) stmt.getObject(2);
            while (rs.next()) {
                System.out.println(rs.getString("name"));
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            DBUtil.closeConnection(conn);
        }
    }
}

作者：itmyhome