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Update AdminDaoImpl.java

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prwfxgajt 8 months ago
parent 2772b289cf
commit 88614c6871
1 changed files with 127 additions and 148 deletions
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ticketing-master/src/com/cn/dao/impl/AdminDaoImpl.java
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package com.cn.dao.impl;
package com.cn.dao.impl; // 数据访问对象实现包
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;
import java.sql.*; // 导入SQL相关类
import java.util.*; // 导入集合相关类
import com.cn.dao.AdminDao;
import com.cn.domain.Admin;
import com.cn.util.JDBCUtil;
import com.cn.dao.AdminDao; // 导入AdminDao接口
import com.cn.domain.Admin; // 导入Admin实体类
import com.cn.util.JDBCUtil; // 导入JDBC工具类
/**
* @className AdminDaoImpl
* @description
* @author lxs
* @date 2019年9月1日
* 实现AdminDao接口，提供管理员数据访问操作。
*/
public class AdminDaoImpl implements AdminDao {
private Connection conn = null;
private PreparedStatement pstmt = null;
private ResultSet rs = null;
@Override
public int add(Admin admin) throws SQLException {
String sql = "insert into admins (username,password,creattime,flag,isuse,logintime) VALUES (?,?,?,?,?,?)";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, admin.getUserName());
pstmt.setObject(2, admin.getPassword());
pstmt.setObject(3, admin.getCreatTime());
pstmt.setObject(4, admin.getFlag());
pstmt.setObject(5, admin.getIsUse());
pstmt.setObject(6, admin.getLoginTime());
// 执行添加语句
int status = pstmt.executeUpdate();
// 关流
pstmt.close();
conn.close();
return status;
}
@Override
public int delete(int adminId) throws SQLException {
String sql = "delete from admins where adminid=?";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, adminId);
// 执行删除语句
int status = pstmt.executeUpdate();
pstmt.close();
conn.close();
return status;
}
@Override
public int update(Admin admin) throws SQLException {
String sql = "update admins set username=?,password=?,flag=?,isuse=?,logintime=? where adminid=?";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, admin.getUserName());
pstmt.setObject(2, admin.getPassword());
pstmt.setObject(3, admin.getFlag());
pstmt.setObject(4, admin.getIsUse());
pstmt.setObject(5, admin.getLoginTime());
pstmt.setObject(6, admin.getAdminId());
int status = pstmt.executeUpdate();
pstmt.close();
conn.close();
return status;
}
@Override
public Admin getById(int adminId) throws SQLException {
String sql = "select * from admins where adminid=?";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, adminId);
rs = pstmt.executeQuery();
Admin admin = null;
while (rs.next()) {
String userName = rs.getString("userName");
String password = rs.getString("password");
Timestamp creatTime = rs.getTimestamp("creatTime");
int flag = rs.getInt("flag");
int isUse = rs.getInt("isUse");
Timestamp loginTime = rs.getTimestamp("loginTime");
admin = new Admin(adminId, userName, password, creatTime, flag, isUse, loginTime);
}
rs.close();
pstmt.close();
conn.close();
return admin;
}
@Override
public List<Admin> getAll() throws SQLException{
String sql = "select * from admins";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
List<Admin> admins = new ArrayList<Admin>();
while (rs.next()) {
int adminId = rs.getInt("adminId");
String userName = rs.getString("userName");
String password = rs.getString("password");
Timestamp creatTime = rs.getTimestamp("creatTime");
int flag = rs.getInt("flag");
int isUse = rs.getInt("isUse");
Timestamp loginTime = rs.getTimestamp("loginTime");
Admin admin = new Admin(adminId, userName, password, creatTime, flag, isUse, loginTime);
admins.add(admin);
}
rs.close();
pstmt.close();
conn.close();
return admins;
}
@Override
public Admin getByName(String userName) throws SQLException {
String sql = "select * from admins where username=?";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, userName);
rs = pstmt.executeQuery();
Admin admin = null;
while (rs.next()) {
int adminId = rs.getInt("adminId");
String password = rs.getString("password");
Timestamp creatTime = rs.getTimestamp("creatTime");
int flag = rs.getInt("flag");
int isUse = rs.getInt("isUse");
Timestamp loginTime = rs.getTimestamp("loginTime");
admin = new Admin(adminId, userName, password, creatTime, flag, isUse, loginTime);
}
rs.close();
pstmt.close();
conn.close();
return admin;
}
private Connection conn = null; // 数据库连接
private PreparedStatement pstmt = null; // 预编译语句
private ResultSet rs = null; // 结果集
@Override
public int add(Admin admin) throws SQLException { // 添加管理员
String sql = "insert into admins (username,password,creattime,flag,isuse,logintime) VALUES (?,?,?,?,?,?)";
conn = JDBCUtil.getConnection(); // 获取连接
pstmt = conn.prepareStatement(sql); // 准备SQL语句
pstmt.setObject(1, admin.getUserName()); // 设置参数
pstmt.setObject(2, admin.getPassword());
pstmt.setObject(3, admin.getCreatTime());
pstmt.setObject(4, admin.getFlag());
pstmt.setObject(5, admin.getIsUse());
pstmt.setObject(6, admin.getLoginTime());
int status = pstmt.executeUpdate(); // 执行插入
closeResources(); // 关闭资源
return status;
}
@Override
public int delete(int adminId) throws SQLException { // 删除管理员
String sql = "delete from admins where adminid=?";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, adminId);
int status = pstmt.executeUpdate();
closeResources();
return status;
}
@Override
public int update(Admin admin) throws SQLException { // 更新管理员信息
String sql = "update admins set username=?,password=?,flag=?,isuse=?,logintime=? where adminid=?";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, admin.getUserName());
pstmt.setObject(2, admin.getPassword());
pstmt.setObject(3, admin.getFlag());
pstmt.setObject(4, admin.getIsUse());
pstmt.setObject(5, admin.getLoginTime());
pstmt.setObject(6, admin.getAdminId());
int status = pstmt.executeUpdate();
closeResources();
return status;
}
@Override
public Admin getById(int adminId) throws SQLException { // 根据ID获取管理员
String sql = "select * from admins where adminid=?";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, adminId);
rs = pstmt.executeQuery();
Admin admin = null;
if (rs.next()) {
admin = resultSetToAdmin(rs); // 将结果集转换为Admin对象
}
closeResources();
return admin;
}
@Override
public List<Admin> getAll() throws SQLException { // 获取所有管理员
String sql = "select * from admins";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
List<Admin> admins = new ArrayList<>();
while (rs.next()) {
admins.add(resultSetToAdmin(rs)); // 将结果集转换为Admin对象并添加到列表
}
closeResources();
return admins;
}
@Override
public Admin getByName(String userName) throws SQLException { // 根据用户名获取管理员
String sql = "select * from admins where username=?";
conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, userName);
rs = pstmt.executeQuery();
Admin admin = null;
if (rs.next()) {
admin = resultSetToAdmin(rs); // 将结果集转换为Admin对象
}
closeResources();
return admin;
}
// 将结果集转换为Admin对象的方法
private Admin resultSetToAdmin(ResultSet rs) throws SQLException {
int adminId = rs.getInt("adminId");
String userName = rs.getString("userName");
String password = rs.getString("password");
Timestamp creatTime = rs.getTimestamp("creatTime");
int flag = rs.getInt("flag");
int isUse = rs.getInt("isUse");
Timestamp loginTime = rs.getTimestamp("loginTime");
return new Admin(adminId, userName, password, creatTime, flag, isUse, loginTime);
}
// 关闭数据库资源的方法
private void closeResources() {
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if (pstmt != null) {
try {
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}

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