jDBC工具类和bean结合

package com.tdb.dao;

import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement ;
import java.sql.Date;


/**
 * 处理数据库的连接和访问
 * @author sanware bqlr
 * @version 1.01
 */
public class MyOracle {

	private Connection conn = null;
	private Statement stmt = null;
	private PreparedStatement prepstmt = null;

//	这是一个全局类,里面放置数据库的参数,如数据库主机 访问用户名 密码等
	private static BeansConstants CONST = BeansConstants.getInstance();

	/**
	 * 构造数据库的连接和访问类
	 */
	public MyOracle() throws Exception {
		Class.forName(CONST.dbdriver);
		conn = DriverManager.getConnection(CONST.dburl, CONST.du, CONST.dp);
		stmt = conn.createStatement();
	}
	public MyOracle(String sql) throws Exception {
		Class.forName(CONST.dbdriver);
		conn = DriverManager.getConnection(CONST.dburl, CONST.du, CONST.dp);
		this.prepareStatement(sql);
	}

	/**
	 * 返回连接
	 * @return Connection 连接
	 */
	public Connection getConnection() {
		return conn;
	}
	/**
	 * PreparedStatement
	 * @return sql 预设SQL语句
	 */
	public void prepareStatement(String sql) throws SQLException {
		prepstmt = conn.prepareStatement(sql);
	}
	/**
	 * 设置对应值
	 * @param index 参数索引
	 * @param value 对应值
	 */
	public void setString(int index,String value) throws SQLException {
		prepstmt.setString(index,value);
	}
	public void setInt(int index,int value) throws SQLException {
		prepstmt.setInt(index,value);
	}
	public void setBoolean(int index,boolean value) throws SQLException {
		prepstmt.setBoolean(index,value);
	}
	public void setDate(int index,Date value) throws SQLException {
		prepstmt.setDate(index,value);
	}
	public void setLong(int index,long value) throws SQLException {
		prepstmt.setLong(index,value);
	}
	public void setFloat(int index,float value) throws SQLException {
		prepstmt.setFloat(index,value);
	}
//	File file = new File("test/data.txt");
//	int fileLength = file.length();
//	InputStream fin = new java.io.FileInputStream(file);
//	mysql.setBinaryStream(5,fin,fileLength);
	public void setBinaryStream(int index,InputStream in,int length) throws SQLException {
		prepstmt.setBinaryStream(index,in,length);
	}

	public void clearParameters()
	throws SQLException
	{
		prepstmt.clearParameters();
	}
	/**
	 * 返回预设状态
	 */
	public PreparedStatement getPreparedStatement() {
		this.getConnection();
		return prepstmt;
	}
	

	/**
	 * 返回状态
	 * @return Statement 状态
	 */
	public Statement getStatement() {
		return stmt;
	}
	/**
	 * 执行SQL语句返回字段集
	 * @param sql SQL语句
	 * @return ResultSet 字段集
	 */
	public ResultSet executeQuery(String sql) throws SQLException {
		if (stmt != null) {
			return stmt.executeQuery(sql);
		}
		else return null;
	}
	public ResultSet executeQuery() throws SQLException {
		if (prepstmt != null) {
			return prepstmt.executeQuery();
		}
		else return null;
	}
	/**
	 * 执行SQL语句
	 * @param sql SQL语句
	 */
	public void executeUpdate(String sql) throws SQLException {
		if (stmt != null)
			stmt.executeUpdate(sql);
	}
	public void executeUpdate() throws SQLException {
		if (prepstmt != null)
			prepstmt.executeUpdate();
	}
	/**
	 * 关闭连接
	 */
	public void close() throws Exception {
		if (stmt != null) {
			stmt.close();
			stmt = null;
		}
		if (prepstmt != null) {
			prepstmt.close();
			prepstmt = null;
		}
		conn.close();
		conn = null;
	}
}

package com.tdb.dao;

public class BeansConstants {

 public static final String dbdriver = "oracle.jdbc.driver.OracleDriver";
 public static final String dburl = "jdbc:oracle:thin:@127.0.0.1:1521:tvds";
 public static final String du = "tdb";
 public static final String dp = "tdb";
 public static BeansConstants getInstance() {
  // TODO Auto-generated method stub
  return new BeansConstants();
 }

}

BeansConstants 

package com.tdb.dao;

import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement ;
import java.sql.Date;


/**
* 处理数据库的连接和访问
* @author sanware bqlr
* @version 1.01
*/
public class MyOracle {

private Connection conn = null;
private Statement stmt = null;
private PreparedStatement prepstmt = null;

// 这是一个全局类,里面放置数据库的参数,如数据库主机 访问用户名 密码等
private static BeansConstants CONST = BeansConstants.getInstance();

/**
* 构造数据库的连接和访问类
*/
public MyOracle() throws Exception {
Class.forName(CONST.dbdriver);
conn = DriverManager.getConnection(CONST.dburl, CONST.du, CONST.dp);
stmt = conn.createStatement();
}
public MyOracle(String sql) throws Exception {
Class.forName(CONST.dbdriver);
conn = DriverManager.getConnection(CONST.dburl, CONST.du, CONST.dp);
this.prepareStatement(sql);
}

/**
* 返回连接
* @return Connection 连接
*/
public Connection getConnection() {
return conn;
}
/**
* PreparedStatement
* @return sql 预设SQL语句
*/
public void prepareStatement(String sql) throws SQLException {
prepstmt = conn.prepareStatement(sql);
}
/**
* 设置对应值
* @param index 参数索引
* @param value 对应值
*/
public void setString(int index,String value) throws SQLException {
prepstmt.setString(index,value);
}
public void setInt(int index,int value) throws SQLException {
prepstmt.setInt(index,value);
}
public void setBoolean(int index,boolean value) throws SQLException {
prepstmt.setBoolean(index,value);
}
public void setDate(int index,Date value) throws SQLException {
prepstmt.setDate(index,value);
}
public void setLong(int index,long value) throws SQLException {
prepstmt.setLong(index,value);
}
public void setFloat(int index,float value) throws SQLException {
prepstmt.setFloat(index,value);
}
// File file = new File("test/data.txt");
// int fileLength = file.length();
// InputStream fin = new java.io.FileInputStream(file);
// mysql.setBinaryStream(5,fin,fileLength);
public void setBinaryStream(int index,InputStream in,int length) throws SQLException {
prepstmt.setBinaryStream(index,in,length);
}

public void clearParameters()
throws SQLException
{
prepstmt.clearParameters();
}
/**
* 返回预设状态
*/
public PreparedStatement getPreparedStatement() {
this.getConnection();
return prepstmt;
}


/**
* 返回状态
* @return Statement 状态
*/
public Statement getStatement() {
return stmt;
}
/**
* 执行SQL语句返回字段集
* @param sql SQL语句
* @return ResultSet 字段集
*/
public ResultSet executeQuery(String sql) throws SQLException {
if (stmt != null) {
return stmt.executeQuery(sql);
}
else return null;
}
public ResultSet executeQuery() throws SQLException {
if (prepstmt != null) {
return prepstmt.executeQuery();
}
else return null;
}
/**
* 执行SQL语句
* @param sql SQL语句
*/
public void executeUpdate(String sql) throws SQLException {
if (stmt != null)
stmt.executeUpdate(sql);
}
public void executeUpdate() throws SQLException {
if (prepstmt != null)
prepstmt.executeUpdate();
}
/**
* 关闭连接
*/
public void close() throws Exception {
if (stmt != null) {
stmt.close();
stmt = null;
}
if (prepstmt != null) {
prepstmt.close();
prepstmt = null;
}
conn.close();
conn = null;
}

}

创建BeansConstants 类

package com.tdb.dao;

public class BeansConstants {

	public static final String dbdriver = "oracle.jdbc.driver.OracleDriver";
	public static final String dburl = "jdbc:oracle:thin:@127.0.0.1:1521:tvds";
	public static final String du = "tdgb";
	public static final String dp = "tdgb";
	public static BeansConstants getInstance() {
		// TODO Auto-generated method stub
		return new BeansConstants();
	}

}

创建bean类

package com.tdb.dao;

import java.sql.ResultSet;

public class DeviceBean {
	
	private String deviceNo;
	private String deviceModel;
	private String deviceScope;
	private String deviceAddress;
	private String radminUserName;
	private String radminPass;
	private String radminAddress;
	
	
	public String getDeviceNo() {
		return deviceNo;
	}
	public void setDeviceNo(String deviceNo) {
		this.deviceNo = deviceNo;
	}
	public String getDeviceModel() {
		return deviceModel;
	}
	public void setDeviceModel(String deviceModel) {
		this.deviceModel = deviceModel;
	}
	public String getDeviceScope() {
		return deviceScope;
	}
	public void setDeviceScope(String deviceScope) {
		this.deviceScope = deviceScope;
	}
	public String getDeviceAddress() {
		return deviceAddress;
	}
	public void setDeviceAddress(String deviceAddress) {
		this.deviceAddress = deviceAddress;
	}
	public String getRadminUserName() {
		return radminUserName;
	}
	public void setRadminUserName(String radminUserName) {
		this.radminUserName = radminUserName;
	}
	public String getRadminPass() {
		return radminPass;
	}
	public void setRadminPass(String radminPass) {
		this.radminPass = radminPass;
	}
	public String getRadminAddress() {
		return radminAddress;
	}
	public void setRadminAddress(String radminAddress) {
		this.radminAddress = radminAddress;
	}
	
	private String deviceBase_insert="insert into deviceBase values (?,?,?,?,?,?,?)";
	
	public void insertnavlink() throws Exception
	{
		try{
			ResultSet rs=null;
			MyOracle myoracle = new MyOracle(deviceBase_insert);
			myoracle.setString(1, this.deviceNo);
			myoracle.setString(2, this.deviceModel);
			myoracle.setString(3, this.deviceScope);
			myoracle.setString(4, this.deviceAddress);
			myoracle.setString(5, this.radminUserName);
			myoracle.setString(6, this.radminPass);
			myoracle.setString(7, this.radminAddress);
			myoracle.executeUpdate();
               myoracle.close();					
                        myoracle = null;

		} catch (Exception ex) {
			throw new Exception("insertnavlink()"+ex.getMessage());
		}
	}
	
}

在Jsp中,就可以直接使用一句语句使用insertnavlink()了:

<jsp:useBean id="NAV" scope="session" class="mysite.Navlink" />
<jsp:setProperty name="NAV" property="*" />
........
NAV.insertnavlink();
......