JDBC packages use simple, Oracle direction

driver=oracle.jdbc.driver.OracleDriver
url=jdbc:oracle:thin:@localhost:1521:XE
user=briup
password=briup

配置文件 jdbc.properties

Package com.briup.driver.form.Dao; 

Import java.io.IOException;
 Import the java.sql.Connection;
 Import the java.sql.DriverManager;
 Import the java.sql.ResultSet;
 Import java.sql.SQLException;
 Import the java.sql .Statement;
 Import the java.util.Properties; 

// package configuration file, registration, connection, switch resources
 // Note:
 // (1) configuration class path (2) exception handling 
public  class the ConnectionFactory {
     Private  static String Driver;
     Private  static String url;
     Private  static String the User;
    private static String password;

    static Connection conn;

    // 配置信息
    static {
        Properties p = new Properties();
        try {
            p.load(ConnectionFactory.class.getResourceAsStream("jdbc.properties"));
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        driver = p.getProperty("driver");
        System.out.println(driver);
        url = p.getProperty("url");
        user = p.getProperty("user");
        password = p.getProperty("password");
    }

    // 注册
    public static Connection getConnection() {
        // 1.注册驱动
        try {
            Class.forName(driver);
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        // 2.建立连接
        try {
            conn = DriverManager.getConnection(url, user, password);
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return conn;
    }

    // 关闭资源
    // PreparedStatement继承自Statement
    public static void close(Connection conn, Statement stmt) {
        close(null, conn, stmt);
    }

    public static void close(ResultSet rs, Connection conn, Statement stmt) {
        try {
            if (rs != null)
                rs.close();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        try {
            if (stmt != null)
                stmt.close();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        try {
            if (conn != null)
                conn.close();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    // public static void main(String[] args) {}
}

ConnectionFactory类

 

package com.briup.driver.form.Dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;

//封装工具类
public class JDBCUtil {

    public static void execute_DML_stmt(String sql) {
        Connection conn = null;
        Statement stmt = null;
        try {
            conn = ConnectionFactory.getConnection();
            stmt = conn.createStatement();
            stmt.execute(sql);
            System.out.println("操作完成");
            ConnectionFactory.close(conn, stmt);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    // select,需要处理结果集
    public static void executeQuery_select_stmt(String sql, IWorkAdapter work) {
        Connection conn = null;
        Statement stmt = null;
        try {
            conn = ConnectionFactory.getConnection();
            stmt = conn.createStatement();
            ResultSet rs = stmt.executeQuery(sql);
            // 处理结果集
            work.processRs(rs);
            ConnectionFactory.close(conn, stmt);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    public static int executeUpdate_DML_ps(String sql, IWorkAdapter work) {
        Connection conn = null;
        PreparedStatement ps = null;
        int change = 0;
        try {
            conn = ConnectionFactory.getConnection();
            ps = conn.prepareStatement(sql);
            work.setValues(ps);
            change = ps.executeUpdate();
            // ps.executeBatch();
            ConnectionFactory.close(conn, ps);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return change;
    }

    public static void executeBatch_DML_ps(String sql, IWorkAdapter work) {
        Connection conn = null;
        PreparedStatement ps = null;

        try {
            conn = ConnectionFactory.getConnection();
            ps = conn.prepareStatement(sql);
            work.setValues(ps);
            ps.executeBatch();
            // ps.executeBatch();
            ConnectionFactory.close(conn, ps);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    // select，prepareStatement方法
    public static Object executeQuery_select_ps(String sql, IWorkAdapter work) {
        Connection conn = null;
        PreparedStatement ps = null;
        ResultSet rs = null;
        Object object = null;
        try {
            conn = ConnectionFactory.getConnection();
            // 预定义
            ps = conn.prepareStatement(sql);
            // 设置参数
            work.setValues(ps);
            rs = ps.executeQuery();
            object = work.processRs(rs);
            ConnectionFactory.close(conn, ps);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return object;
    }

}

Package com.briup.driver.form.Dao; 

Import java.sql.PreparedStatement;
 Import the java.sql.ResultSet; 

public  interface IWork {
     // result set 
    public Object processRS (the ResultSet RS); 

    // after the predefined set of parameters PreparedStatement 
    public  void the setValues (the PreparedStatement PS); 
}

IWork class

package com.briup.driver.form.Dao;

import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class IWorkAdapter implements IWork {

    @Override
    public Object processRs(ResultSet rs) {
        return null;
        // TODO Auto-generated method stub

    }

    @Override
    public void setValues(PreparedStatement ps) {
        // TODO Auto-generated method stub

    }

}

Package com.briup.driver.form.Dao; 

// defects transaction is automatically committed, there may be some variation in the sequence of operations CRUD
 @ as required to change the code 
Import java.sql.PreparedStatement;
 Import Java. sql.ResultSet;
 Import java.sql.SQLException;
 Import of java.util.ArrayList;
 Import java.util.List; 

Import com.briup.driver.Student; 

public  class JDBCFunction {
     // insert, PreparedStatement inserted predefined 
    public  static  void iNSERT (Student S) { 
        String SQL = "INSERT INTO t_student values (,,???)" ; 
        JDBCUtil.executeUpdate_DML_ps (SQL,new IWorkAdapter() {
            @Override
            public void setValues(PreparedStatement ps) {
                try {
                    ps.setInt(1, s.getId());
                    ps.setString(2, s.getName());
                    ps.setInt(3, s.getAge());
                } catch (SQLException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

        });
        System.out.println("插入成功");
    }

    // 改 根据id
    public static void update(Student s) {
        String sql = "update t_student set name= ? where id = ?";
        int change = JDBCUtil.executeUpdate_DML_ps(sql, new IWorkAdapter() {
            @Override
            public void setValues(PreparedStatement ps) {
                try {
                    ps.setString(1, "fys");
                    ps.setInt(2, s.getId());
                } catch (SQLException e) {
                    //Auto-Generated Block the catch the TODO
 IWorkAdapter () {                    e.printStackTrace (); 
                } 
            } 
        }); 
        IF (Change == 0 ) { 
            System.out.println ( "modified data is not present" ); 
        } the else { 
            System.out.println ( "modified successfully" ); 
        } 
    } 

    // DML deleted, according to the above mentioned id 
    public  static  void the delete (Student S) { 
        String SQL = "t_student the delete from the WHERE the above mentioned id =?" ;
         int Change = JDBCUtil.executeUpdate_DML_ps (SQL, new new
            @Override 
            public  void the setValues (the PreparedStatement PS) {
                 the try { 
                    ps.setInt ( . 1 , s.getId ()); 
                } the catch (SQLException E) {
                     // the TODO Auto-Generated Block the catch 
                    e.printStackTrace (); 
                } 
            } 
        }) ; 
        IF (Change == 0 ) { 
            System.out.println ( "there is no data to delete" ); 
        } the else { 
            System.out.println ( "deleted successfully" ); 
        } 
    } 

    // check, according to ID 
    public  static Student select(Student s) {

        String sqlS = "select * from t_student where id=?";
        Object object = JDBCUtil.executeQuery_select_ps(sqlS, new IWorkAdapter() {
            @Override
            public void setValues(PreparedStatement ps) {
                try {
                    ps.setInt(1, s.getId());
                } catch (SQLException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

            @Override
            public Student processRs(ResultSet rs) {
                Student s1 = null;
                try {
                    while (rs.next()) {
                        int id = rs.getInt("id");
                        String name = rs.getString("name");
                        int age = rs.getInt("age");
                        s1 = new Student(id, name, age);
                    }
                } catch (SQLException e) {
                    //Auto-Generated Block the catch the TODO 
                    e.printStackTrace();
                } 
                return S1; 

            } 
        }); 
        IF (Object == null ) { 
            System.out.println ( "data that does not exist" );
             return  null ; 
        } the else {
             return (Student) Object; 
        } 
    } 

    // insert batch 
    public  static  void insertBatch (List <Student> List) { 
        String sqli = "iNSERT INTO t_student values (,,???)" ; 
        JDBCUtil.executeBatch_DML_ps (sqli, new new IWorkAdapter () {
            @Override
            public void setValues(PreparedStatement ps) {
                try {
                    for (int i = 0; i < list.size(); i++) {
                        ps.setLong(1, list.get(i).getId());
                        ps.setString(2, list.get(i).getName());
                        ps.setInt(3, list.get(i).getAge());
                        ps.addBatch();
                    }

                } catch (SQLException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

        });
        System.out.println("插入完毕");
    }

    // 插入批删除
    public static void deleteBatch(List<Student> list) {
        String sqlI = "delete from t_student where id =?";
        JDBCUtil.executeBatch_DML_ps(sqlI, new IWorkAdapter() {
            @Override
            public void setValues(PreparedStatement ps) {
                try {
                    for (int i = 0; i < list.size(); i++) {
                        ps.setInt(1, list.get(i).getId());
                        ps.addBatch();

                    }

                } catch (SQLException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

        });
        System.out.println("删除完毕");
    }

}

JDBCFunction