在下图目录中可以找到驱动包ORACLE的JDBC驱动包，拷贝到工程即可使用
创建java工程waterboss，建立lib文件夹，将ojdbc.jar拷贝到此文件夹，然后add build path
我们通常编写BaseDao负责加载驱动，获取数据库连接，关闭资源，代码如下：
package cn.itcast.waterboss.dao;
import java.sql.SQLException;
/**
* 基本数据访问类
* @author Administrator
*
*/
public class BaseDao {
//加载驱动
static {
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
/**
* 获取数据库连接
* @return
* @throws SQLException
*/
public static java.SQL.Connection getConnection() throws SQLException {
return java.sql.DriverManager.getConnection(
"jdbc:oracle:thin:@192.168.80.10:1521:orcl",
"wateruser",
"itcast"
);
}
/**
* 关闭资源
* @param rs
* @param stmt
* @param conn
*/
public static void closeAll(
java.sql.ResultSet rs,
java.sql.Statement stmt,
java.sql.Connection conn
) {
//关闭结果集
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
//关闭执行对象
if (stmt != null) {
try {
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
//关闭执行对象
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
jdbc驱动为：
oracle.jdbc.OracleDriver
连接字符串( 瘦连接 )：
jdbc:oracle:thin:@虚拟机的 IP:1521:orcl
(三)业主增删改代码编写1.创建实体类
package cn.itcast.waterboss.entity;
import java.util.Date;
/**
* 业主实体类
* @author Administrator
*
*/
public class Owners {
private Long id; //编号
private String name; //业主名称
private Long addressid; //地址编号
private String housenumber; //门牌号
private String watermeter; //水表编号
private Date adddate; //登记日期
private Long ownertypeid; //业主类型 ID
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Long getAddressid() {
return addressid;
}
public void setAddressid(Long addressid) {
this.addressid = addressid;
}
public String getHousenumber() {
return housenumber;
}
public void setHousenumber(String housenumber) {
this.housenumber = housenumber;
}
public String getWatermeter() {
return watermeter;
}
public void setWatermeter(String watermeter) {
this.watermeter = watermeter;
}
public Date getAdddate() {
return adddate;
}
public void setAdddate(Date adddate) {
this.adddate = adddate;
}
public Long getOwnertypeid() {
return ownertypeid;
}
public void setOwnertypeid(Long ownertypeid) {
this.ownertypeid = ownertypeid;
}
}
2.创建Dao类实现增删改
package cn.itcast.waterboss.dao;
import cn.itcast.waterboss.entity.Owners;
import java.sql.SQLException;
/**
* 业主数据访问类
* @author Administrator
*
*/
public class OwnersDao {
/**
* 新增业主
* @param owners
*/
public static void add(Owners owners) {
java.sql.Connection conn = null;
java.sql.PreparedStatement stmt = null;
try {
conn = BaseDao.getConnection();
stmt =
conn.prepareStatement("insert into T_OWNERS
values(?,?,?,?,?,?,?)");
stmt.setLong(1, owners.getId());
stmt.setString(2, owners.getName());
stmt.setLong(3, owners.getAddressid());
stmt.setString(4, owners.getHousenumber());
stmt.setString(5, owners.getWatermeter());
stmt.setDate(6, new java.sql.Date(owners.getAdddate().getTime()));
stmt.setLong(7, owners.getOwnertypeid());
stmt.execute();
} catch (SQLException e) {
e.printStackTrace();
} finally {
BaseDao.closeAll(null, stmt, conn);
}
}
/**
* 修改业主
* @param owners
*/
public static void update(Owners owners) {
java.sql.Connection conn = null;
java.sql.PreparedStatement stmt = null;
try {
conn = BaseDao.getConnection();
stmt =
conn.prepareStatement(
"update T_OWNERS set
name=?,addressid=?,housenumber=?,"
"watermeter=?,adddate=?, ownertypeid=? where
id=?"
);
stmt.setString(1, owners.getName());
stmt.setLong(2, owners.getAddressid());
stmt.setString(3, owners.getHousenumber());
stmt.setString(4, owners.getWatermeter());
stmt.setDate(5, new java.sql.Date(owners.getAdddate().getTime()));
stmt.setLong(6, owners.getOwnertypeid());
stmt.setLong(7, owners.getId());
stmt.execute();
} catch (SQLException e) {
e.printStackTrace();
} finally {
BaseDao.closeAll(null, stmt, conn);
}
}
/**
* 删除业主
* @param owners
*/
public static void delete(Long id) {
java.sql.Connection conn = null;
java.sql.PreparedStatement stmt = null;
try {
conn = BaseDao.getConnection();
stmt = conn.prepareStatement("delete from T_OWNERS where
id=?");
stmt.setLong(1, id);
stmt.execute();
} catch (SQLException e) {
e.printStackTrace();
} finally {
BaseDao.closeAll(null, stmt, conn);
}
}
}
