C#大作业——人事管理系统
2024-04-25 11:35:09
此文仅为记录在校期间windows应用开发课程学习成果，本项目仍存在很多不足，仅供参考学习使用。
本门课程大作业要求完成一个具有主界面、用户登录、注册、注销、重新登陆、员工信息增删改查等功能的系统。其中有10个类，分别是：
主函数类Program, 数据库类DBAccess，操作类Moudules,登录窗口LoginDialog,注册窗口RegisterWindow，主界面MainWindow,员工管理界面StuffForm,用户中心界面UserCenter，,修改密码窗口changePwdWindows，注销窗口LogoutAccount。
以下是代码实现及窗体：
program:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;namespace HRMS
{static class Program{/// <summary>/// 应用程序的主入口点。/// </summary>[STAThread]static void Main(){Application.EnableVisualStyles();Application.SetCompatibleTextRenderingDefault(false);Application.Run(new MainWindow());//Application.Run(new StuffForm());}}
}
DBAccess:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;
using System.Data;
using System.IO;namespace HRMS
{class DBAccess{#region 公共变量public static int nLoginID = 0;public static string strLoginName;public static string strSQLSelectAll = "select * from tb_StuffBasic";#endregion//连接对象、连接字符串、SQL命令对象、SQL命令字符串、reader对象、dataset对象//在此添加你的数据库信息//string strConnection = "Data Source= ;Database= ;User id=sa;PWD=";SqlConnection sqlConnection;private static DBAccess dbAccess;//连接、发送命令、获取结果public static DBAccess GetInstance(){if (dbAccess == null){dbAccess = new DBAccess();}return dbAccess;}public SqlConnection GetConnection(){try{sqlConnection = new SqlConnection(strConnection);sqlConnection.Open();if (sqlConnection.State == System.Data.ConnectionState.Open){return sqlConnection;}return null;}catch (Exception){throw;}}public void CloseConnection(){if (sqlConnection.State == System.Data.ConnectionState.Open){sqlConnection.Close();sqlConnection.Dispose(); //释放}}public void GetSQLCommand(string strCmd, string strParam, byte[] bytes){GetConnection();SqlCommand sqlCommand = new SqlCommand(strCmd, sqlConnection);//@ParamsqlCommand.Parameters.Add(strParam, SqlDbType.Binary).Value = bytes;sqlCommand.ExecuteNonQuery();sqlCommand.Dispose();CloseConnection();}public void GetSQLCommand(string str) //不用返回命令{GetConnection();SqlCommand sqlCommand = new SqlCommand(str, sqlConnection); // 命令、链接sqlCommand.ExecuteNonQuery();sqlCommand.Dispose();CloseConnection();}public SqlDataReader GetReaderFormCommand(string strCmd) // 返回reader对象{SqlDataReader reader = null;GetConnection();SqlCommand sqlCommand = new SqlCommand(strCmd, sqlConnection);reader = sqlCommand.ExecuteReader();sqlCommand.Dispose();//CloseConnection(); 登录时reader还要用，不能关闭连接return reader;}public DataSet GetDataSet(string strCmd, string tableName) //返回数据集{GetConnection();SqlDataAdapter dataAdapter = new SqlDataAdapter(strCmd, sqlConnection);DataSet dataSet = new DataSet();dataAdapter.Fill(dataSet, tableName);return dataSet;}}
}
Moudules:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.IO;namespace HRMS
{class Modules{const string strDefaultPic = "default.jpg";public static Image ReadDefaultImage(){Image image = null;try{image = Image.FromFile(strDefaultPic);}catch (Exception){throw;}return image;}public static byte[] Image2Bytes(Image image){byte[] bytes;MemoryStream ms = new MemoryStream();image.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);bytes = new byte[ms.Length];ms.Position = 0;ms.Read(bytes, 0, bytes.Length);ms.Close();return bytes;}public static Image Bytes2Image(byte[] bytes){Image image = null;MemoryStream ms = new MemoryStream(bytes);image = Image.FromStream(ms);return image;}}
}
LoginDialog:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;namespace HRMS
{public partial class LoginDialog : Form{public LoginDialog(){InitializeComponent();}//Tag: 1-未登录；2-登录;3-重新登录。private void cancleButton_Click(object sender, EventArgs e){if ((int)this.Tag == 1){Application.Exit();}else{this.Close();}}private void loginButton_Click(object sender, EventArgs e){//连接数据库、构造命令、执行命令、根据返回结果判断是否允许登录//SqlConnection conn = new SqlConnection(strConnection);//conn.Open();//if (conn.State == ConnectionState.Open)//{ // SqlCommand command = new SqlCommand();// command.Connection = conn;// command.CommandText = "select * from tb_Login where Name='" + nameTextBox.Text.Trim() + "'and Password='" + codeTextBox.Text.Trim() + "'";// command.CommandType = CommandType.Text;// SqlDataReader reader = command.ExecuteReader();// //SqlDataReader reader = DBAccess.GetInstance().GetReaderFormCommand();string str = "select * from tb_Login where Name='" + nameTextBox.Text.Trim() + "'and Password='" + codeTextBox.Text.Trim() + "'";SqlDataReader reader = DBAccess.GetInstance().GetReaderFormCommand(str);if (!reader.HasRows){MessageBox.Show("账号或密码错误，请重试！");}else{reader.Read();DBAccess.strLoginName = (string)reader[1];this.Tag = 2;this.Close();}//}}private void registerButton_Click(object sender, EventArgs e){RegisterWindow registerWindow = new RegisterWindow();registerWindow.ShowDialog();}private void LoginDialog_Load(object sender, EventArgs e){}}
}
RegisterWindow:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;namespace HRMS
{public partial class RegisterWindow : Form{public RegisterWindow(){InitializeComponent();}string strSQLCommand;DBAccess dbAccess = new DBAccess();private void sureRegisterButton_Click(object sender, EventArgs e){if (rNameTextBox.Text.Trim() != ""){int flag = 1;string str = "select Name from tb_Login where Name ='" + rNameTextBox.Text.Trim() + "'";SqlDataReader reader = DBAccess.GetInstance().GetReaderFormCommand(str);if (reader.HasRows){MessageBox.Show("用户名已存在，请重新输入！");flag = 0;}if (rCodeTextBox.Text.IndexOf(" ") >= 0){MessageBox.Show("密码不得含有空格，请重新输入！");flag = 0;}if (6 > rCodeTextBox.Text.Trim().Length || rCodeTextBox.Text.Trim().Length > 16){MessageBox.Show("密码长度不符合规定，请重新输入！");flag = 0;}if (rCodeTextBox.Text != sureCodeTextBox.Text){MessageBox.Show("两次密码输入不一致，请重新输入！");flag = 0;}if (checkBox.Checked == false){MessageBox.Show("您还未阅读并同意公司下发的相关资料文件内容!");flag = 0;}if (flag == 1){//insert into tb_StuffBasic() values()string strColumns = "Name, Password";strSQLCommand = "insert into tb_Login(" + strColumns + ") values('"+ rNameTextBox.Text.Trim() + "','"+ rCodeTextBox.Text.Trim() + "')";dbAccess.GetSQLCommand(strSQLCommand);insert into tb_Question() values()//strSQLCommand = "insert into tb_Question(" + "Name" + ")"// + " values('" + DBAccess.strLoginName + "')";//dbAccess.GetSQLCommand(strSQLCommand);DialogResult dr = MessageBox.Show("注册成功！");if (dr == DialogResult.OK){this.Close();}}}else{MessageBox.Show("用户名不得为空，请输入用户名！");}}private void button1_Click(object sender, EventArgs e){rNameTextBox.Text = "";rCodeTextBox.Text = "";sureCodeTextBox.Text = "";checkBox.Checked = false;}private void RegisterWindow_Load(object sender, EventArgs e){}}
}
MainWindow:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;namespace HRMS
{public partial class MainWindow : Form{public MainWindow(){InitializeComponent();}private void MainWindow_Load(object sender, EventArgs e){LoginDialog loginDialog = new LoginDialog();loginDialog.Tag = 1;loginDialog.ShowDialog();if ((int)loginDialog.Tag != 2){Application.Exit();}userStatusStrip.Items[0].Text = "欢迎 " + DBAccess.strLoginName + " 使用";}private void 重新登录ToolStripMenuItem_Click(object sender, EventArgs e){LoginDialog loginDialog = new LoginDialog();loginDialog.Tag = 2;loginDialog.ShowDialog();}private void 退出登录ToolStripMenuItem_Click(object sender, EventArgs e){Application.Exit();}private void 员工信息ToolStripMenuItem_Click(object sender, EventArgs e) //{StuffForm stuffForm = new StuffForm();stuffForm.ShowDialog();}private void 用户中心ToolStripMenuItem_Click_1(object sender, EventArgs e){UserCenter userCenter = new UserCenter();userCenter.ShowDialog();}}
}
StuffForm:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;namespace HRMS
{public partial class StuffForm : Form{public StuffForm(){InitializeComponent();}enum OPERATIONTYPE //定义枚举类型{Add,Update,Delete,Save,Cancel,None}OPERATIONTYPE operationType = OPERATIONTYPE.None; //定义一个操作类DBAccess dbAccess = DBAccess.GetInstance(); // 创建对象DataSet dataset;string strSQLCommand;string strSQLParam = "@Param"; //临时变量private void StuffForm_Load(object sender, EventArgs e) //创建之后，现实之前进行格子初始化{try{EnableButtons(operationType);dataset = dbAccess.GetDataSet(DBAccess.strSQLSelectAll, "tb_StuffBasic");dataGridView1.DataSource = dataset.Tables[0]; //把这张表全部显示dataGridView1.Columns[0].Width = 60;dataGridView1.Columns[1].Width = 60;dataGridView1.Columns[2].Width = 60;dataGridView1.Columns[3].Width = 100;dataGridView1.Columns[4].Width = 100;dataGridView1.Columns[5].Width = 100;}catch (Exception){throw;}//下拉框fieldComboBox.Items.Clear();fieldComboBox.Items.Add("ID");fieldComboBox.Items.Add("Name");fieldComboBox.Items.Add("Sex");fieldComboBox.Items.Add("Phone");fieldComboBox.SelectedIndex = 0;}private void searchButton_Click(object sender, EventArgs e) //查询{//select * from tb_StuffBasic where ID='2'if (valueTextBox.Text.Trim() == ""){dataset = dbAccess.GetDataSet(DBAccess.strSQLSelectAll, "tb_StuffBasic");dataGridView1.DataSource = dataset.Tables[0];}else{string strCmd = "select * from tb_StuffBasic where "+ fieldComboBox.SelectedItem.ToString()+ "='" + valueTextBox.Text.Trim()+ "'";dataset = dbAccess.GetDataSet(strCmd, "tb_StuffBasic");dataGridView1.DataSource = dataset.Tables[0];}}private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e) //在下面列出对应信息{byte[] pic;if (dataGridView1.RowCount > 1){int row = dataGridView1.CurrentCell.RowIndex;idTextBox.Text = dataGridView1[0, row].Value.ToString();nameTextBox.Text = dataGridView1[1, row].Value.ToString();sexTextBox.Text = dataGridView1[2, row].Value.ToString();positionTextBox.Text = dataGridView1[3, row].Value.ToString();phoneTextBox.Text = dataGridView1[4, row].Value.ToString();addressTextBox.Text = dataGridView1[5, row].Value.ToString();emailTextBox.Text = dataGridView1[6, row].Value.ToString();//显示图片try{if (!(dataset.Tables[0].Rows[row][7] is DBNull)) //如果图片不为空{pic = (byte[])(dataset.Tables[0].Rows[row][7]); // 从数据集中取图片字节序列MemoryStream ms = new MemoryStream(pic); // 将字节序列转成流photoPictureBox.Image = Image.FromStream(ms); //从流里创建照片}else{photoPictureBox.Image = null;}}catch (Exception){throw;}currentTextBox.Text = nameTextBox.Text; // 右上角文本框显示当前用户}}private void EnableButtons(OPERATIONTYPE type) //设置按钮使能{switch (type){case OPERATIONTYPE.Add:case OPERATIONTYPE.Update:addButton.Enabled = false;modifyButton.Enabled = false;delButton.Enabled = false;saveButton.Enabled = true;cancelButton.Enabled = true;picSelectButton.Enabled = true;picDeleteButton.Enabled = true;break;case OPERATIONTYPE.Delete:case OPERATIONTYPE.Save:case OPERATIONTYPE.Cancel:case OPERATIONTYPE.None:default:addButton.Enabled = true;modifyButton.Enabled = true;delButton.Enabled = true;saveButton.Enabled = false;cancelButton.Enabled = true;picSelectButton.Enabled = false;picDeleteButton.Enabled = false;break;}}private void ClearTextBoxes(){foreach (var control in panel2.Controls){if (control is TextBox){((TextBox)control).Clear();}}}private void cancelButton_Click(object sender, EventArgs e){//设置按钮使能operationType = OPERATIONTYPE.None;EnableButtons(OPERATIONTYPE.None);//清空文本框ClearTextBoxes();}private void addButton_Click(object sender, EventArgs e) //添加按钮{operationType = OPERATIONTYPE.Add;EnableButtons(OPERATIONTYPE.Add);ClearTextBoxes();photoPictureBox.Image = Modules.ReadDefaultImage();}private void modifyButton_Click(object sender, EventArgs e) //修改按钮{operationType = OPERATIONTYPE.Update;EnableButtons(operationType);}private void ConstructAddingString() //构造添加的字符串{//insert into tb_StuffBasic() values()string strColumns = "Name, Sex, Position, Phone, Address, Email, Photo";strSQLCommand = "insert into tb_StuffBasic(" + strColumns + ") values('"+ nameTextBox.Text.Trim() + "','"+ sexTextBox.Text.Trim() + "','"+ positionTextBox.Text.Trim() + "','"+ phoneTextBox.Text.Trim() + "','"+ addressTextBox.Text.Trim() + "','"+ emailTextBox.Text.Trim() + "',"+ strSQLParam + ")";}private void ConstructUpdatingString() //构造修改的字符串{//update tb_StuffBasic set Name='aa'where ID='2';//"Name, Sex, Position, Phone, Address, Email, Photo"strSQLCommand = "update tb_StuffBasic set Name='"+ nameTextBox.Text.Trim() + "',Sex='"+ sexTextBox.Text.Trim() + "',Position='"+ positionTextBox.Text.Trim() + "',Phone='"+ phoneTextBox.Text.Trim() + "',Address='"+ addressTextBox.Text.Trim() + "',Email='"+ emailTextBox.Text.Trim() + "',Photo="+ strSQLParam + " where ID='"+ idTextBox.Text.Trim() + "'";}private void UpdateDataSet() //更新显示的表格{dataset = dbAccess.GetDataSet(DBAccess.strSQLSelectAll, "tb_StuffBasic");dataGridView1.DataSource = dataset.Tables[0];}private void saveButton_Click(object sender, EventArgs e) //保存按钮{if (operationType == OPERATIONTYPE.Add) //如果状态是添加{//正则表达式 ^ 是开始 $是结束 1表示开始数字为1 //第一个\为转义 \b表示匹配一个整数 {10}表示匹配10次var re = @"^1\d{10}$";if (System.Text.RegularExpressions.Regex.IsMatch(phoneTextBox.Text, re)){//构造SQL命令字符串，执行该命令ConstructAddingString();byte[] bytes = Modules.Image2Bytes(photoPictureBox.Image);dbAccess.GetSQLCommand(strSQLCommand, strSQLParam, bytes);UpdateDataSet();MessageBox.Show("添加成功！");}else{MessageBox.Show("手机号码错误，请检查后重新输入！","提示");EnableButtons(OPERATIONTYPE.Add);return;}}else //如果状态是修改{var re = @"^1\d{10}$";if (System.Text.RegularExpressions.Regex.IsMatch(phoneTextBox.Text, re)){//构造SQL命令字符串，执行该命令ConstructUpdatingString();byte[] bytes = Modules.Image2Bytes(photoPictureBox.Image);dbAccess.GetSQLCommand(strSQLCommand, strSQLParam, bytes);UpdateDataSet();MessageBox.Show("修改成功！");}else{MessageBox.Show("手机号码错误，请检查后重新输入！", "提示");EnableButtons(OPERATIONTYPE.Add);return;} }operationType = OPERATIONTYPE.None;EnableButtons(operationType);}private void delButton_Click(object sender, EventArgs e) //删除按钮{if (MessageBox.Show("您真的要删除吗？此删除不可恢复", "提示", MessageBoxButtons.YesNo,
MessageBoxIcon.Warning) == DialogResult.Yes){//delete from tb_StuffBasic where ID='2'strSQLCommand = "delete from tb_StuffBasic where ID='"+ idTextBox.Text.Trim() + "'";dbAccess.GetSQLCommand(strSQLCommand);UpdateDataSet();}else{return;}}private void picSelectButton_Click(object sender, EventArgs e) //选择图片{using (OpenFileDialog dialog = new OpenFileDialog()){string strFileName;dialog.Filter = "*.jpg|*.jpg|*.bmp|*.bmp"; //文本显示的格式，过滤格式DialogResult result = dialog.ShowDialog();if (result == System.Windows.Forms.DialogResult.OK){strFileName = dialog.FileName;photoPictureBox.Image = Image.FromFile(strFileName);}}}private void picDeleteButton_Click(object sender, EventArgs e) //删除图片{photoPictureBox.Image = Modules.ReadDefaultImage();}}
}
userCenter:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.IO;namespace HRMS
{public partial class UserCenter : Form{public UserCenter(){InitializeComponent();}DBAccess dbAccess = DBAccess.GetInstance();private void UserCenter_Load(object sender, EventArgs e){nameLabel.Text = DBAccess.strLoginName;string strName = "select Name from tb_StuffBasic where Name ='" + DBAccess.strLoginName + "'";SqlDataReader readerName = DBAccess.GetInstance().GetReaderFormCommand(strName);if (!readerName.HasRows){sexLabel.Text = "暂未录入";phoneLabel.Text = "暂未录入";positionLabel.Text = "暂未录入";addressLabel.Text = "暂未录入";emailLabel.Text = "暂未录入";}else{string str = "select * from tb_StuffBasic where Name ='" + DBAccess.strLoginName + "'";SqlDataReader reader = DBAccess.GetInstance().GetReaderFormCommand(str);reader.Read();sexLabel.Text = (string)reader[2];phoneLabel.Text = (string)reader[3];positionLabel.Text = (string)reader[4];addressLabel.Text = (string)reader[5];emailLabel.Text = (string)reader[6];byte[] pic;pic = (byte[])(reader[7]);MemoryStream ms = new MemoryStream(pic);photoPictureBox.Image = Image.FromStream(ms);}}private void changePwdButton_Click(object sender, EventArgs e){changePwdWindow changePwdWindow = new changePwdWindow();changePwdWindow.ShowDialog();}private void logoutAccButton_Click(object sender, EventArgs e){LogoutAccount logoutAccount = new LogoutAccount();logoutAccount.ShowDialog();}}
}
changePwdWindow:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;namespace HRMS
{public partial class changePwdWindow : Form{public changePwdWindow(){InitializeComponent();}private void changePwdWindow_Load(object sender, EventArgs e){nameTextBox.Text = DBAccess.strLoginName;}int temp;string strSQLCommand;DBAccess dbAccess = DBAccess.GetInstance();private void changeButton_Click(object sender, EventArgs e){changeButton.Text = "看不清？换一张";string[] imgName = { "1.jpg", "2.jpg", "3.jpg", "4.jpg", "5.jpg", "6.jpg", "7.jpg", "8.jpg", "9.jpg", "10.jpg" };Random random = new Random();int index = random.Next(0, imgName.Length);temp = index;checkPictureBox.Image = Image.FromFile(Application.StartupPath + "\\imgs" + "\\" + imgName[index]);}private string seek(int temp){string[] imgDic = { "fcgt", "frar", "grer", "mecc", "oxfa", "qrfa", "tsux", "txnx", "umwa", "yeqe" };string result = imgDic[temp];return result;}private void sureButton_Click(object sender, EventArgs e){int flag = 1;string str = "select PassWord from tb_Login where Name ='" + nameTextBox.Text.Trim() + "'";SqlDataReader reader = DBAccess.GetInstance().GetReaderFormCommand(str);reader.Read();string pwd = (string)reader[0];if (pwd != oldCodeTextBox.Text){MessageBox.Show("旧密码输入错误，请重新输入！");flag = 0;}if (pwd == newCodeTextBox.Text){MessageBox.Show("新密码不得与旧密码相同，请重新输入！");flag = 0;}if (newCodeTextBox.Text.IndexOf(" ") >= 0){MessageBox.Show("新密码不得含有空格，请重新输入！");flag = 0;}if (6 > newCodeTextBox.Text.Trim().Length || newCodeTextBox.Text.Trim().Length > 16){MessageBox.Show("新密码长度不符合规定，请重新输入！\n请设置6-16位密码，不得含有空格!");flag = 0;}if (newCodeTextBox.Text != sureNewCodeTextBox.Text){MessageBox.Show("两次密码输入不一致，请重新输入！");flag = 0;}string yz = yzTextBox.Text.ToLower().Trim();if (yz != seek(temp)){MessageBox.Show("图片验证码输入错误，请重新输入！");flag = 0;}if (flag == 1){//update tb_StuffBasic set Name='aa'where ID='2';//"Name, Password"strSQLCommand = "update tb_Login set Password='"+ newCodeTextBox.Text.Trim() + "' where Name='"+ nameTextBox.Text.Trim() + "'";dbAccess.GetSQLCommand(strSQLCommand);DialogResult dr = MessageBox.Show("密码修改成功！");if (dr == DialogResult.OK){this.Close();}}}}
}
LogoutAccount:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;namespace HRMS
{public partial class LogoutAccount : Form{public LogoutAccount(){InitializeComponent();}DBAccess dbAccess = DBAccess.GetInstance();string strSQLCommand;DataSet dataset;private void UpdateDataSet() //更新数据库{dataset = dbAccess.GetDataSet(DBAccess.strSQLSelectAll, "tb_Login");}private void logoutButton_Click(object sender, EventArgs e){string str = "select * from tb_Login where Name='"+ nameTextBox.Text.Trim() + "'and Password='"+ codeTextBox.Text.Trim() + "'";SqlDataReader reader = DBAccess.GetInstance().GetReaderFormCommand(str);if (!reader.HasRows){MessageBox.Show("账号或密码错误，请重试！");}else{DialogResult dr = MessageBox.Show("是否确定注销账号？", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation);if (dr == DialogResult.OK){//delete from tb_Login where ID='2'strSQLCommand = "delete from tb_Login where Name='"+ nameTextBox.Text.Trim() + "'";dbAccess.GetSQLCommand(strSQLCommand);UpdateDataSet();Application.Exit();}}}private void LogoutAccount_Load(object sender, EventArgs e){nameTextBox.Text = DBAccess.strLoginName;}}
}
工程文件：Windows应用开发C#——人事管理系统作业-C#文档类资源-CSDN下载此文仅为记录在校期间windows应用开发课程学习成果，本项目仍存在很多不足，仅供参考学习使用。 更多下载资源、学习资料请访问CSDN下载频道.https://download.csdn.net/download/weixin_63503933/85660193
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