diff --git "a/53 \345\221\250\345\216\232\350\276\260/20230609 \347\254\254\344\270\203\346\254\241\344\275\234\344\270\232 companyManager\350\257\225\345\215\267.md" "b/53 \345\221\250\345\216\232\350\276\260/20230609 \347\254\254\344\270\203\346\254\241\344\275\234\344\270\232 companyManager\350\257\225\345\215\267.md" new file mode 100644 index 0000000000000000000000000000000000000000..d062df6d4fa20a5464870c1d6ad446ad0f73983f --- /dev/null +++ "b/53 \345\221\250\345\216\232\350\276\260/20230609 \347\254\254\344\270\203\346\254\241\344\275\234\344\270\232 companyManager\350\257\225\345\215\267.md" @@ -0,0 +1,399 @@ +# 20230609 第七次作业 companyManager试卷 + +## bean包 + +### **list**类 + +```java +package Bean; + +public class Dept { + private int DeptID; + private String DeptName; + + public Dept(int deptID, String deptName) { + DeptID = deptID; + DeptName = deptName; + } + + @Override + public String toString() { + return "Dept{" + + "DeptID=" + DeptID + + ", DeptName='" + DeptName + '\'' + + '}'; + } + + public int getDeptID() { + return DeptID; + } + + public String getDeptName() { + return DeptName; + } + + public Dept() { + } +} + +``` + +### Emp类 + +```java +package Bean; + +public class Emp { + private int EmpID, Age, DeptID; + private String EmpName, Sex, Tel, PassWord,Dep; + + public String getDep() { + return Dep; + } + + public Emp(String empID, String age, String deptID, String empName, String sex, String tel, String passWord, String dep) { + EmpID = Integer.parseInt(empID); + Age = Integer.parseInt(age); + DeptID = Integer.parseInt(deptID); + EmpName = empName; + Sex = sex; + Tel = tel; + PassWord = passWord; + Dep = dep; + } + + public Emp(String empID, String age, String deptID, String empName, String sex, String tel, String passWord) { + } + + @Override + public String toString() { + return "Emp{" + + "EmpID=" + EmpID + + ", Age=" + Age + + ", DeptID=" + DeptID + + ", EmpName='" + EmpName + '\'' + + ", Sex='" + Sex + '\'' + + ", Tel='" + Tel + '\'' + + ", PassWord='" + PassWord + '\'' + + '}'; + } + + public int getEmpID() { + return EmpID; + } + + public int getAge() { + return Age; + } + + public int getDeptID() { + return DeptID; + } + + public String getEmpName() { + return EmpName; + } + + public String getSex() { + return Sex; + } + + public String getTel() { + return Tel; + } + + public String getPassWord() { + return PassWord; + } + + public Emp() { + } + + public Emp(int empID, int age, int deptID, String empName, String sex, String tel, String passWord) { + EmpID = empID; + Age = age; + DeptID = deptID; + EmpName = empName; + Sex = sex; + Tel = tel; + PassWord = passWord; + } +} + +``` + +## utils包 + +### DBUtil类 + +```java +package Utils; + +import com.mysql.jdbc.Connection; + +import java.sql.DriverManager; +import java.sql.PreparedStatement; +import java.sql.ResultSet; +import java.sql.SQLException; + +public class DBUtil { + private static final String Driver = "com.mysql.jdbc.Driver"; + private static final String URL = "jdbc:mysql:///companyManager?useSSL=false&useUnicode=true&characterEncoding=utf8"; + private static final String Username = "root"; + private static final String Paw = "root"; + + static { + try { + Class.forName(Driver); + } catch (ClassNotFoundException e) { + System.out.println("注册驱动失败"); + e.printStackTrace(); + } + } + + public static Connection conn() { + Connection connection = null; + try { + connection = (Connection) DriverManager.getConnection(URL, Username, Paw); + } catch (SQLException e) { + System.out.println("连接失败"); + e.printStackTrace(); + } + return connection; + } + + public static ResultSet query(String sql, String... keys) { + ResultSet rs = null; + try { + PreparedStatement pst = conn().prepareStatement(sql); + for (int i = 0; i < keys.length; i++) { + pst.setString((i + 1), "%" + keys[i] + "%"); + } + rs = pst.executeQuery(); + } catch (SQLException e) { + System.out.println("查询异常"); + e.printStackTrace(); + } + return rs; + } + + public static int update(String sql, Object... keys) { + int num = 0; + try { + PreparedStatement pst = conn().prepareStatement(sql); + for (int i = 0; i < keys.length; i++) { + pst.setObject((i + 1), keys[i]); + } + num = pst.executeUpdate(); + } catch (SQLException e) { + System.out.println("更新异常"); + e.printStackTrace(); + } + return num; + } +} + +``` + +## dao包 + +### Dao类 + +```java +package Dao; + +import Utils.DBUtil; + +import java.sql.ResultSet; +import java.sql.SQLException; +import java.util.ArrayList; + +public class Dao { + private static String sql; + + public static ArrayList query() { + sql = "select * from emp e,dept d where d.DeptID=e.DeptID"; + ResultSet rs = DBUtil.query(sql); + ArrayList list = new ArrayList<>(); + try { + while (rs.next()) { + String empID = rs.getString("EmpID"); + String empName = rs.getString("EmpName"); + String sex = rs.getString("Sex"); + String age = rs.getString("Age"); + String tel = rs.getString("Tel"); + String passWord = rs.getString("PassWord"); + String deptID = rs.getString("DeptID"); + String DeptName = rs.getString("DeptName"); + + list.add(new Bean.Emp(empID, age, deptID, empName, sex, tel, passWord, DeptName)); + System.out.println(list); + } + } catch (SQLException e) { + System.out.println("打印异常"); + e.printStackTrace(); + } + return list; + } + + public static ArrayList query2(String... Keys) { + sql = "select * from emp e,dept d where d.DeptID=e.DeptID && EmpName like ?"; + ResultSet rs = DBUtil.query(sql, Keys); + ArrayList list = new ArrayList<>(); + try { + while (rs.next()) { + String empID = rs.getString("EmpID"); + String empName = rs.getString("EmpName"); + String sex = rs.getString("Sex"); + String age = rs.getString("Age"); + String tel = rs.getString("Tel"); + String passWord = rs.getString("PassWord"); + String deptID = rs.getString("DeptID"); + String DeptName = rs.getString("DeptName"); + + list.add(new Bean.Emp(empID, age, deptID, empName, sex, tel, passWord, DeptName)); + System.out.println(list); + } + } catch (SQLException e) { + System.out.println("打印异常"); + e.printStackTrace(); + } + return list; + + } + +// public static ArrayList query2() { +// sql = "select * from houseType"; +// ResultSet rs = DBUtil.query(sql); +// ArrayList list = new ArrayList<>(); +// try { +// while (rs.next()) { +// +// list.add(new Bean.Dept()); +// } +// } catch (SQLException e) { +// System.out.println("打印异常"); +// e.printStackTrace(); +// } +// return list; +// } + + +} + +``` + +## servlet包 + +### list类 + +```java +package Servlet; + + +import Bean.Emp; +import Dao.Dao; + +import javax.servlet.*; +import javax.servlet.http.*; +import javax.servlet.annotation.*; +import java.io.IOException; +import java.util.ArrayList; + +@WebServlet(name = "list", value = "/companyManager/*") +public class list extends HttpServlet { + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { + request.setCharacterEncoding("utf-8"); + response.setCharacterEncoding("utf-8"); + response.setContentType("text/html"); + String path = request.getPathInfo(); + String name = null; + if (path == null || path.equals("/list")) { + ArrayList list = Dao.query(); + request.setAttribute("list", list); + request.getRequestDispatcher("/WEB-INF/list.jsp").forward(request, response); + System.out.println("传值成功"); + } else if (path.equals("/query")) { + name = request.getParameter("name"); + System.out.println(name); + ArrayList list = Dao.query2(name); + request.setAttribute("list", list); + request.getRequestDispatcher("/WEB-INF/list.jsp").forward(request, response); + System.out.println("传值成功"); + } + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { + } +} + +``` + +## 网页 + +### 显示页面list + +```jsp +<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> +<%-- + Created by IntelliJ IDEA. + User: Administrator + Date: 2023-06-08 + Time: 17:17 + To change this template use File | Settings | File Templates. +--%> +<%@ page contentType="text/html;charset=UTF-8" language="java" %> + + + All Info + + + +
+
+ 姓名： + +
+
+ + + + + + + + + + + + + + + + + + + +
编号姓名性别年龄电话所属部门
${emp.empID}${emp.empName}${emp.sex}${emp.age}${emp.tel}${emp.dep}
+ + + +``` + +### diff --git a/README.md b/README.md deleted file mode 100644 index b3b15819f28b283fb446a4f692c874c833393915..0000000000000000000000000000000000000000 --- a/README.md +++ /dev/null @@ -1,37 +0,0 @@ -# JSP+Sevrlet网站开发 - -#### 介绍 -JSP+Sevrlet网站开发 - -#### 软件架构 -软件架构说明 - - -#### 安装教程 - -1. xxxx -2. xxxx -3. xxxx - -#### 使用说明 - -1. xxxx -2. xxxx -3. xxxx - -#### 参与贡献 - -1. Fork 本仓库 -2. 新建 Feat_xxx 分支 -3. 提交代码 -4. 新建 Pull Request - - -#### 特技 - -1. 使用 Readme\_XXX.md 来支持不同的语言，例如 Readme\_en.md, Readme\_zh.md -2. Gitee 官方博客 [blog.gitee.com](https://blog.gitee.com) -3. 你可以 [https://gitee.com/explore](https://gitee.com/explore) 这个地址来了解 Gitee 上的优秀开源项目 -4. [GVP](https://gitee.com/gvp) 全称是 Gitee 最有价值开源项目，是综合评定出的优秀开源项目 -5. Gitee 官方提供的使用手册 [https://gitee.com/help](https://gitee.com/help) -6. Gitee 封面人物是一档用来展示 Gitee 会员风采的栏目 [https://gitee.com/gitee-stars/](https://gitee.com/gitee-stars/)