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UserInfo(JavaBeanµÄʵÏÖ£¬´«µÝÊý¾Ý£©
package com.feng.test;
import java.io.Serializable;
public class UserInfo implements Serializable {
private int userid;
private String username;
private String password;
public int getUserid() {
return userid;
}
public void setUserid(int userid) {
this.userid = userid;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}

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package com.feng.test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public final class DataBase {
private final static String DRIVER = "oracle.jdbc.driver.OracleDriver";
private final static String URL = "jdbc:oracle:thin:@localhost:1521:Oracle9i";
private final static String USER = "scott";
private final static String PWD = "tiger";
private DataBase() {
}
public static Connection getConnection() {
Connection conn = null;
try {
Class.forName(DRIVER);
conn = DriverManager.getConnection(URL, USER, PWD);
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}
public static void closeConnection(Connection conn) {
try {
if (conn != null) {
if (!conn.isClosed()) {
conn.close();
}
}
} catch (SQLException e) {
e.printStackTrace();
}
}
public static PreparedStatement getPreparedStatement(Connection conn,
String sql) {
PreparedStatement pstmt = null;
try {
pstmt = conn.prepareStatement("sql");


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