From 9d5d22c813e0d8b494e94674f346d64a7460a44f Mon Sep 17 00:00:00 2001 From: liyansheng <1761724207@qq.com> Date: Fri, 20 Dec 2024 22:35:13 +0800 Subject: [PATCH] =?UTF-8?q?=E9=A1=B9=E7=9B=AE=E5=88=9D=E6=AD=A5?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .gitignore | 38 ++ .idea/.gitignore | 3 + .idea/dbnavigator.xml | 402 ++++++++++++++++++ .idea/encodings.xml | 7 + .idea/misc.xml | 14 + .idea/vcs.xml | 6 + .../JSP_Servlet_Template/conf/server.xml | 31 ++ .../JSP_Servlet_Template/conf/web.xml | 50 +++ .smarttomcat/Jsp_register/conf/server.xml | 31 ++ .smarttomcat/Jsp_register/conf/web.xml | 50 +++ pom.xml | 92 ++++ readme.md | 7 + .../example/controller/RegisterServlet.java | 48 +++ .../example/controller/UserListServlet.java | 119 ++++++ src/main/java/example/dao/UserDao.java | 43 ++ src/main/java/example/model/User.java | 42 ++ src/main/java/example/utils/DBUtil.java | 50 +++ src/main/java/example/utils/DBUtils.java | 24 ++ src/main/webapp/WEB-INF/web.xml | 6 + src/main/webapp/index.jsp | 9 + src/main/webapp/register.jsp | 18 + src/main/webapp/userList.jsp | 38 ++ 22 files changed, 1128 insertions(+) create mode 100644 .gitignore create mode 100644 .idea/.gitignore create mode 100644 .idea/dbnavigator.xml create mode 100644 .idea/encodings.xml create mode 100644 .idea/misc.xml create mode 100644 .idea/vcs.xml create mode 100644 .smarttomcat/JSP_Servlet_Template/conf/server.xml create mode 100644 .smarttomcat/JSP_Servlet_Template/conf/web.xml create mode 100644 .smarttomcat/Jsp_register/conf/server.xml create mode 100644 .smarttomcat/Jsp_register/conf/web.xml create mode 100644 pom.xml create mode 100644 readme.md create mode 100644 src/main/java/example/controller/RegisterServlet.java create mode 100644 src/main/java/example/controller/UserListServlet.java create mode 100644 src/main/java/example/dao/UserDao.java create mode 100644 src/main/java/example/model/User.java create mode 100644 src/main/java/example/utils/DBUtil.java create mode 100644 src/main/java/example/utils/DBUtils.java create mode 100644 src/main/webapp/WEB-INF/web.xml create mode 100644 src/main/webapp/index.jsp create mode 100644 src/main/webapp/register.jsp create mode 100644 src/main/webapp/userList.jsp diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..5ff6309 --- /dev/null +++ b/.gitignore @@ -0,0 +1,38 @@ +target/ +!.mvn/wrapper/maven-wrapper.jar +!**/src/main/**/target/ +!**/src/test/**/target/ + +### IntelliJ IDEA ### +.idea/modules.xml +.idea/jarRepositories.xml +.idea/compiler.xml +.idea/libraries/ +*.iws +*.iml +*.ipr + +### Eclipse ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ +build/ +!**/src/main/**/build/ +!**/src/test/**/build/ + +### VS Code ### +.vscode/ + +### Mac OS ### +.DS_Store \ No newline at end of file diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..26d3352 --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,3 @@ +# Default ignored files +/shelf/ +/workspace.xml diff --git a/.idea/dbnavigator.xml b/.idea/dbnavigator.xml new file mode 100644 index 0000000..98d00af --- /dev/null +++ b/.idea/dbnavigator.xml @@ -0,0 +1,402 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/encodings.xml b/.idea/encodings.xml new file mode 100644 index 0000000..aa00ffa --- /dev/null +++ b/.idea/encodings.xml @@ -0,0 +1,7 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..4b661a5 --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,14 @@ + + + + + + + + + + \ No newline at end of file diff --git a/.idea/vcs.xml b/.idea/vcs.xml new file mode 100644 index 0000000..94a25f7 --- /dev/null +++ b/.idea/vcs.xml @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/.smarttomcat/JSP_Servlet_Template/conf/server.xml b/.smarttomcat/JSP_Servlet_Template/conf/server.xml new file mode 100644 index 0000000..d9a36b4 --- /dev/null +++ b/.smarttomcat/JSP_Servlet_Template/conf/server.xml @@ -0,0 +1,31 @@ + + + + + + + + + + + + + + + + + + + + + diff --git a/.smarttomcat/JSP_Servlet_Template/conf/web.xml b/.smarttomcat/JSP_Servlet_Template/conf/web.xml new file mode 100644 index 0000000..5e81203 --- /dev/null +++ b/.smarttomcat/JSP_Servlet_Template/conf/web.xml @@ -0,0 +1,50 @@ + + + + + + index.html + index.htm + index.jsp + + + + + html + text/html + + + txt + text/plain + + + jpg + image/jpeg + + + png + image/png + + + + + jsp + org.apache.jasper.servlet.JspServlet + + fork + false + + 3 + + + + jsp + *.jsp + + + + \ No newline at end of file diff --git a/.smarttomcat/Jsp_register/conf/server.xml b/.smarttomcat/Jsp_register/conf/server.xml new file mode 100644 index 0000000..d9a36b4 --- /dev/null +++ b/.smarttomcat/Jsp_register/conf/server.xml @@ -0,0 +1,31 @@ + + + + + + + + + + + + + + + + + + + + + diff --git a/.smarttomcat/Jsp_register/conf/web.xml b/.smarttomcat/Jsp_register/conf/web.xml new file mode 100644 index 0000000..3dfcd12 --- /dev/null +++ b/.smarttomcat/Jsp_register/conf/web.xml @@ -0,0 +1,50 @@ + + + + + + index.html + index.htm + index.jsp + + + + + html + text/html + + + txt + text/plain + + + jpg + image/jpeg + + + png + image/png + + + + + jsp + org.apache.jasper.servlet.JspServlet + + fork + false + + 3 + + + + jsp + *.jsp + + + + \ No newline at end of file diff --git a/pom.xml b/pom.xml new file mode 100644 index 0000000..47e76a9 --- /dev/null +++ b/pom.xml @@ -0,0 +1,92 @@ + + 4.0.0 + org.example + JSP_Servlet_Template + war + 1.0-SNAPSHOT + JSP_Servlet_Template Maven Webapp + http://maven.apache.org + + + junit + junit + 3.8.1 + test + + + + javax.servlet + javax.servlet-api + 4.0.1 + provided + + + + + javax.servlet.jsp + javax.servlet.jsp-api + 2.3.3 + provided + + + + mysql + mysql-connector-java + 8.0.33 + + + + commons-dbutils + commons-dbutils + 1.7 + + + + com.mchange + c3p0 + 0.9.5.5 + + + + + + + javax.servlet + jstl + 1.2 + + + + + org.apache.tomcat + tomcat-servlet-api + 9.0.41 + provided + + + + + org.apache.tomcat + tomcat-jasper + 9.0.41 + provided + + + + JSP_Servlet_Template + + + + + public + aliyun nexus + https://maven.aliyun.com/repository/public + + true + + + + + + diff --git a/readme.md b/readme.md new file mode 100644 index 0000000..a0b7c4f --- /dev/null +++ b/readme.md @@ -0,0 +1,7 @@ +# jsp+servlet项目模板 + + + + + + diff --git a/src/main/java/example/controller/RegisterServlet.java b/src/main/java/example/controller/RegisterServlet.java new file mode 100644 index 0000000..9cebadd --- /dev/null +++ b/src/main/java/example/controller/RegisterServlet.java @@ -0,0 +1,48 @@ +package example.controller; + +import example.model.User; +import example.dao.UserDao; + +import java.io.IOException; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + + +@WebServlet("/register") +public class RegisterServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { + // 从请求中获取表单参数 + String username = request.getParameter("username"); + String password = request.getParameter("password"); + + // 创建用户对象 + User user = new User(0,username, password); + + UserDao userDao = new UserDao(); + int save = 0; + try { + save = userDao.addUser("1","1"); + } catch (Exception e) { + throw new RuntimeException(e); + } + + response.setContentType("text/html; charset=UTF-8"); + response.setCharacterEncoding("UTF-8"); + response.getWriter().println(""); + response.getWriter().println(""); + if (save > 0) { + response.getWriter().println("注册成功~"); + } else { + response.getWriter().println("注册失败~"); + } + } + + protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { + response.sendRedirect("register.jsp"); + } +} diff --git a/src/main/java/example/controller/UserListServlet.java b/src/main/java/example/controller/UserListServlet.java new file mode 100644 index 0000000..a2cff05 --- /dev/null +++ b/src/main/java/example/controller/UserListServlet.java @@ -0,0 +1,119 @@ +package example.controller; + +import example.model.User; +import example.utils.DBUtil; + +import java.io.IOException; +import java.io.UnsupportedEncodingException; +import java.sql.ResultSet; +import java.sql.SQLException; +import java.util.ArrayList; +import java.util.List; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +@WebServlet("/userList") +public class UserListServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + private static final int PAGE_SIZE = 3; // 每页显示的记录数 + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { + int currentPage = 1; // 当前页码，默认第一页 + String pageParam = request.getParameter("page"); + if (pageParam!= null &&!pageParam.isEmpty()) { + currentPage = Integer.parseInt(pageParam); + } + + String queryParam = request.getParameter("query"); // 获取查询条件参数 + if (queryParam == null) { + queryParam = ""; // 设置默认值为空字符串，可根据实际情况调整 + } + List userList = new ArrayList<>(); + + String sql = getSqlWithQuery(queryParam); // 根据查询条件获取对应的SQL语句 + int offset = (currentPage - 1) * PAGE_SIZE; + ResultSet resultSet = DBUtil.executeQuery(sql, offset, PAGE_SIZE); + try { + while (resultSet.next()) { + User user = new User(); + user.setId(resultSet.getInt("id")); + user.setUsername(resultSet.getString("username")); + user.setPassword(resultSet.getString("password")); + userList.add(user); + } + } catch (SQLException e) { + e.printStackTrace(); + } finally { + DBUtil.closeResources(null, null, resultSet); + } + + int totalCount = getTotalCount(queryParam); // 根据查询条件获取总记录数 + int totalPages = (totalCount + PAGE_SIZE - 1) / PAGE_SIZE; // 计算总页数 + + String pageLinks = generatePageLinks(currentPage, totalPages, queryParam); // 生成带查询条件的页码链接 + + request.setAttribute("userList", userList); + request.setAttribute("currentPage", currentPage); + request.setAttribute("totalPages", totalPages); + request.setAttribute("pageLinks", pageLinks); + request.setAttribute("query", queryParam); // 将查询条件也设置为属性传递给JSP页面，用于回显等 + request.getRequestDispatcher("/userList.jsp").forward(request, response); + } + + private String getSqlWithQuery(String queryParam) { + StringBuilder sqlBuilder = new StringBuilder("SELECT * FROM user"); + if (queryParam!= null &&!queryParam.isEmpty()) { + sqlBuilder.append(" WHERE username LIKE '%").append(queryParam).append("%'"); // 简单示例，按用户名模糊查询 + } + sqlBuilder.append(" LIMIT ?,?"); + return sqlBuilder.toString(); + } + + private int getTotalCount(String queryParam) { + StringBuilder sqlBuilder = new StringBuilder("SELECT COUNT(*) FROM user"); + if (queryParam!= null &&!queryParam.isEmpty()) { + sqlBuilder.append(" WHERE username LIKE '%").append(queryParam).append("%'"); // 按用户名模糊查询统计数量 + } + ResultSet resultSet = DBUtil.executeQuery(sqlBuilder.toString()); + int totalCount = 0; + try { + if (resultSet.next()) { + totalCount = resultSet.getInt(1); + } + } catch (SQLException e) { + e.printStackTrace(); + } finally { + DBUtil.closeResources(null, null, resultSet); + } + return totalCount; + } + + private String generatePageLinks(int currentPage, int totalPages, String queryParam) { + StringBuilder pageLinksBuilder = new StringBuilder(); + pageLinksBuilder.append(""); + return pageLinksBuilder.toString(); + } +} \ No newline at end of file diff --git a/src/main/java/example/dao/UserDao.java b/src/main/java/example/dao/UserDao.java new file mode 100644 index 0000000..db84996 --- /dev/null +++ b/src/main/java/example/dao/UserDao.java @@ -0,0 +1,43 @@ +package example.dao; + +import example.model.User; +import example.utils.DBUtils; +import org.apache.commons.dbutils.QueryRunner; +import org.apache.commons.dbutils.handlers.BeanHandler; +import org.apache.commons.dbutils.handlers.BeanListHandler; + +import java.util.List; + +public class UserDao { + private final QueryRunner queryRunner = new QueryRunner(DBUtils.getDataSource()); + + public int addUser(String name, String email) throws Exception { + String sql = "INSERT INTO user (username, password) VALUES (?, ?)"; + return queryRunner.update(sql, name, email); + } + + public User getUserById(int id) throws Exception { + String sql = "SELECT * FROM user WHERE id = ?"; + return queryRunner.query(sql, new BeanHandler<>(User.class), id); + } + + public List getAllUser() throws Exception { + String sql = "SELECT * FROM user"; + return queryRunner.query(sql, new BeanListHandler<>(User.class)); + } + + public int updateUser(int id, String name, String email) throws Exception { + String sql = "UPDATE user SET username = ?, password = ? WHERE id = ?"; + return queryRunner.update(sql, name, email, id); + } + + public int deleteUser(int id) throws Exception { + String sql = "DELETE FROM user WHERE id = ?"; + return queryRunner.update(sql, id); + } + + public static void main(String[] args) throws Exception { + UserDao userDao = new UserDao(); + System.out.println(userDao.getUserById(1).getUsername()); + } +} diff --git a/src/main/java/example/model/User.java b/src/main/java/example/model/User.java new file mode 100644 index 0000000..58b8a09 --- /dev/null +++ b/src/main/java/example/model/User.java @@ -0,0 +1,42 @@ +package example.model; + +import com.sun.xml.internal.bind.v2.model.core.ID; + +public class User { + private int id; + private String username; + private String password; + + // 构造器 + public User() {} + + public User(int id,String username, String password) { + this.id= id; + this.username = username; + this.password = password; + } + + public int getId() { + return id; + } + + public void setId(int id) { + this.id = id; + } + + 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; + } +} diff --git a/src/main/java/example/utils/DBUtil.java b/src/main/java/example/utils/DBUtil.java new file mode 100644 index 0000000..1fbeae9 --- /dev/null +++ b/src/main/java/example/utils/DBUtil.java @@ -0,0 +1,50 @@ +package example.utils; + +import java.sql.Connection; +import java.sql.DriverManager; +import java.sql.PreparedStatement; +import java.sql.ResultSet; +import java.sql.SQLException; + +public class DBUtil { + private static final String URL = "jdbc:mysql://localhost:3306/guest_room_db?useSSL=false&serverTimezone=UTC"; + private static final String USERNAME = "root"; + private static final String PASSWORD = "root"; + + public static Connection getConnection() throws SQLException { + return DriverManager.getConnection(URL, USERNAME, PASSWORD); + } + + public static void closeResources(Connection connection, PreparedStatement preparedStatement, ResultSet resultSet) { + try { + if (resultSet!= null) { + resultSet.close(); + } + if (preparedStatement!= null) { + preparedStatement.close(); + } + if (connection!= null) { + connection.close(); + } + } catch (SQLException e) { + e.printStackTrace(); + } + } + + public static ResultSet executeQuery(String sql, Object... params) { + Connection connection = null; + PreparedStatement preparedStatement = null; + ResultSet resultSet = null; + try { + connection = getConnection(); + preparedStatement = connection.prepareStatement(sql); + for (int i = 0; i < params.length; i++) { + preparedStatement.setObject(i + 1, params[i]); + } + resultSet = preparedStatement.executeQuery(); + } catch (SQLException e) { + e.printStackTrace(); + } + return resultSet; + } +} \ No newline at end of file diff --git a/src/main/java/example/utils/DBUtils.java b/src/main/java/example/utils/DBUtils.java new file mode 100644 index 0000000..834acbe --- /dev/null +++ b/src/main/java/example/utils/DBUtils.java @@ -0,0 +1,24 @@ +package example.utils; + +import com.mchange.v2.c3p0.ComboPooledDataSource; + +public class DBUtils { + private static ComboPooledDataSource dataSource; + + static { + try { + dataSource = new ComboPooledDataSource(); + dataSource.setDriverClass("com.mysql.cj.jdbc.Driver"); + dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/jsp_temp_db?useSSL=false&serverTimezone=UTC"); + dataSource.setUser("root"); + dataSource.setPassword("root"); + } catch (Exception e) { + e.printStackTrace(); + } + } + + public static ComboPooledDataSource getDataSource() { + return dataSource; + } + +} diff --git a/src/main/webapp/WEB-INF/web.xml b/src/main/webapp/WEB-INF/web.xml new file mode 100644 index 0000000..9c08442 --- /dev/null +++ b/src/main/webapp/WEB-INF/web.xml @@ -0,0 +1,6 @@ + + default + + /js/* + + \ No newline at end of file diff --git a/src/main/webapp/index.jsp b/src/main/webapp/index.jsp new file mode 100644 index 0000000..fe033e0 --- /dev/null +++ b/src/main/webapp/index.jsp @@ -0,0 +1,9 @@ +<%@ page contentType="text/html;charset=UTF-8" language="java" %> + + + + +

首页

+注册 + + diff --git a/src/main/webapp/register.jsp b/src/main/webapp/register.jsp new file mode 100644 index 0000000..cf2fca0 --- /dev/null +++ b/src/main/webapp/register.jsp @@ -0,0 +1,18 @@ +<%@ page contentType="text/html;charset=UTF-8" language="java" %> + + + + + + +

用户注册

+
+ +

+ +

+ +
+
+ + diff --git a/src/main/webapp/userList.jsp b/src/main/webapp/userList.jsp new file mode 100644 index 0000000..9223a88 --- /dev/null +++ b/src/main/webapp/userList.jsp @@ -0,0 +1,38 @@ +<%@ page contentType="text/html;charset=UTF-8" language="java" %> +<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> +<%@ page import="java.util.List" %> +<%@ page import="example.model.User" %> + + + 用户列表 + + + +

用户列表

+
+
+ + +
+
+ + + + + + + + + + + + + +
ID用户名密码
${user.id}${user.username}${user.password}
+
+ 当前第 ${currentPage} 页，共 ${totalPages} 页 +
+ ${pageLinks} +
+ + \ No newline at end of file