Bootstrap4+MySQL前后端综合实训-Day07-PM【用户信息管理页面——功能展示(分页显示数据、添加用户、批量删除用户、编辑用户信息)、servlet项目代码整理汇总】
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Bootstrap4+MySQL前后端综合实训-Day07-PM【用户信息管理页面——功能展示(分页显示数据、添加用户、批量删除用户、编辑用户信息)、servlet项目代码整理汇总】
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【Bootstrap4前端框架+MySQL数据库】前后端综合实训【10天课程 博客汇总表 详细笔记】【附：实训所有代码】
目 录
页面展示
分页显示数据
添加用户信息
(单个/批量)删除用户
编辑用户信息
user_info数据表——数据展示
user_manager.html
package com.newcapec.dao;
BaseDao.java
UserInfoDao.java
package com.newcapec.entity;
ResultData.java
UserInfoEntity.java
package com.newcapec.servlet;
AddUserServlet.java
DeleteUserServlet.java
LoginServlet.java
SelectUserByIdServlet.java
SelectUserByPageServlet.java
UpdateUserServlet.java
页面展示
分页显示数据
添加用户信息
(单个/批量)删除用户
编辑用户信息
user_info数据表——数据展示
user_manager.html
<!DOCTYPE html> <html><head><meta charset="utf-8"><!-- 新 Bootstrap4 核心 CSS 文件 --><link rel="stylesheet" href="../bootstrap4/css/bootstrap.min.css"><link rel="stylesheet" type="text/css" href="../font-awesome-4.7.0/css/font-awesome.min.css" /><link href="../bootstrap-table/bootstrap-table.min.css" rel="stylesheet" /><!-- jQuery文件。务必在bootstrap.min.js 之前引入 --><script src="../jquery/jquery.min.js"></script><!-- bootstrap.bundle.min.js 用于弹窗、提示、下拉菜单，包含了 popper.min.js --><script src="../js/popper.min.js"></script><!-- 最新的 Bootstrap4 核心 JavaScript 文件 --><script src="../bootstrap4/js/bootstrap.min.js"></script><script src="../bootstrap-table/bootstrap-table.js"></script><script src="../bootstrap-table/locale/bootstrap-table-zh-CN.js"></script><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"><title>用户管理</title><script type="text/javascript">function batchDelete() {var rows = $('#userInfoTab').bootstrapTable('getSelections');console.log(rows);var userIds = new Array();for (var i = 0; i < rows.length; i++) {userIds.push(rows[i].userId);}console.log(userIds);$.ajax({type: "POST",url: "../DeleteUserServlet",data: { "userIds": userIds },success: function (msg) {if (msg.flag) {alert("成功");//刷新数据$('#userInfoTab').bootstrapTable("refresh");} else {alert("失败");}}});}function addUserInfo() {var userName = $("#addUserName").val();var userPwd = $("#addUserPwd").val();var userdata = {"userName": userName,"userPwd": userPwd};$.ajax({type: "POST",url: "../AddUserServlet",data: userdata,success: function (msg) {if (msg.flag) {alert("成功");//刷新数据$('#userInfoTab').bootstrapTable("refresh");} else {alert("失败");}$("#addUserName").val("");$("#addUserPwd").val("");}});}function edit(userId) {console.log(userId);//通过该ID获取数据//通过ajax发起请求获取用户信息$.ajax({type: "get",url: "../SelectUserByIdServlet",data: { "userId": userId },success: function (msg) {console.log(msg);//获取成功后填入参数展示模态框$("input[name='userId']").val(msg.userId);$("input[name='userName']").val(msg.userName);$("input[name='userPwd']").val(msg.userPwd);$("#updateUserInfo").modal('show');}});//执行更新}function updateUserInfo() {var userInfo = {"userId": $("input[name='userId']").val(),"userName": $("input[name='userName']").val(),"userPwd": $("input[name='userPwd']").val()};$.ajax({type: "post",url: "../UpdateUserServlet",data: userInfo,success: function (msg) {if (msg.flag) {alert("成功");//刷新数据$('#userInfoTab').bootstrapTable("refresh");} else {alert("失败");}$("input[name='userId']").val("");$("input[name='userName']").val("");$("input[name='userPwd']").val("");}});}</script> </head><body><div style="padding: 10px"><div id="toolbar" style="display: flex;"><button type="button" class="btn btn-info" data-toggle="modal" data-target="#addUserInfo"><iclass="fa fa-plus"></i> 添加</button><button type="button" class="btn btn-danger" onclick="batchDelete()"><i class="fa fa-minus"></i>批量删除</button><!-- <input type="text" placeholder="请输入用户名" id="userName" value="zhangsan"/><button class="btn btn-info" onclick='search()'><i class="fa fa-search"></i></button> --></div><table id="userInfoTab" class="table table-hover table-bordered table-striped"></table><div class="modal fade" id="updateUserInfo"><div class="modal-dialog"><div class="modal-content"><!-- 模态框头部 --><div class="modal-header bg-info"><h4 class="modal-title">更新用户信息</h4><button type="button" class="close" data-dismiss="modal">×</button></div><!-- 模态框主体 --><div class="modal-body"><form><input type="hidden" name="userId" /><div class="input-group mb-3"><div class="input-group-prepend"><span class="input-group-text"><i class="fa fa-user"></i></span></div><input type="text" name="userName" class="form-control" placeholder="Username"></div><div class="input-group mb-3"><div class="input-group-prepend"><span class="input-group-text"><i class="fa fa-lock"></i></span></div><input type="password" name="userPwd" class="form-control" placeholder="userpwd"></div></form></div><!-- 模态框底部 --><div class="modal-footer"><button type="button" class="btn btn-success" data-dismiss="modal"onclick=updateUserInfo()>更新</button><button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button></div></div></div></div><!-- 模态框 --><div class="modal fade" id="addUserInfo"><div class="modal-dialog"><div class="modal-content"><!-- 模态框头部 --><div class="modal-header bg-info"><h4 class="modal-title">添加用户信息</h4><button type="button" class="close" data-dismiss="modal">×</button></div><!-- 模态框主体 --><div class="modal-body"><form><div class="input-group mb-3"><div class="input-group-prepend"><span class="input-group-text"><i class="fa fa-user"></i></span></div><input type="text" id="addUserName" class="form-control" placeholder="Username"></div><div class="input-group mb-3"><div class="input-group-prepend"><span class="input-group-text"><i class="fa fa-lock"></i></span></div><input type="password" id="addUserPwd" class="form-control" placeholder="userpwd"></div></form></div><!-- 模态框底部 --><div class="modal-footer"><button type="button" class="btn btn-success" data-dismiss="modal"onclick=addUserInfo()>添加</button><button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button></div></div></div></div></div><script>var icons = {paginationSwitchDown: 'fa-caret-square-down',paginationSwitchUp: 'fa-caret-square-up',refresh: 'fa-refresh',toggleOff: 'fa-toggle-off',toggleOn: 'fa-toggle-on',columns: 'fa-th-list',fullscreen: 'fa-arrows-alt',detailOpen: 'fa-plus',detailClose: 'fa-minus'};//异步加载表格数据$('#userInfoTab').bootstrapTable({url: '../SelectAllServlet', //请求后台的URL（*）method: 'get', //请求方式（*）toolbar: '#toolbar', //工具按钮用哪个容器striped: true, //是否显示行间隔色cache: false, //是否使用缓存，默认为true，所以一般情况下需要设置一下这个属性（*）pagination: true, //是否显示分页（*）icons: icons, //重新定义图标 修复图标加载失败问题queryParams: function (params) {var temp = { //这里的键的名字和控制器的变量名必须一直，这边改动，控制器也需要改成一样的limit: params.limit, //页面大小offset: params.offset //页码//userName: $("#userName").val()//statu: $("#txt_search_statu").val()};return temp;},sidePagination: "server", //分页方式：client客户端分页，server服务端分页（*）pageNumber: 1, //初始化加载第一页，默认第一页pageSize: 10, //每页的记录行数（*）pageList: [10, 15, 20, 25], //可供选择的每页的行数（*）//search: true, //是否显示表格搜索，此搜索是客户端搜索，不会进服务端，所以，个人感觉意义不大strictSearch: true,showRefresh: true, //是否显示刷新按钮clickToSelect: true, //是否启用点击选中行uniqueId: "userId", //每一行的唯一标识，一般为主键列//showToggle:true, //是否显示详细视图和列表视图的切换按钮//cardView: false, //是否显示详细视图columns: [{checkbox: true}, {field: 'userId',title: '用户Id'}, {field: 'userName',title: '用户名'}, {field: 'createTime',title: '创建时间'}, {field: 'updateTime',title: '更新时间'}, {field: 'userId',title: '编辑',formatter: function (value, row, index) {var e = '<a class="btn btn-waring" href="#" mce_href="#" title="编辑" onclick="edit(\''+ row.userId+ '\')"><i class="fa fa-edit"></i>编辑</a> ';return e;}}]});</script> </body></html>package com.newcapec.dao;
BaseDao.java
package com.newcapec.dao;import java.sql.SQLException; import java.util.List;/*** JDBC在后期需要使用hibernate/mybatis优化* * @author user** @param <T>*/ public interface BaseDao<T> {// public int insert(T t) throws ClassNotFoundException, SQLException;public boolean deleteById(int id) throws ClassNotFoundException, SQLException;public boolean batchDeleteById(int[] ids) throws ClassNotFoundException, SQLException;public boolean update(T t) throws ClassNotFoundException, SQLException;public T selectById(int id) throws ClassNotFoundException, SQLException;public List<T> selectAll() throws ClassNotFoundException, SQLException; }UserInfoDao.java
package com.newcapec.dao;import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.Date; import java.util.List;import com.newcapec.entity.UserInfoEntity; import com.newcapec.utils.DBUtils;public class UserInfoDao implements BaseDao<UserInfoEntity> {public UserInfoEntity login(String userName, String userPwd) throws ClassNotFoundException, SQLException {UserInfoEntity userInfoEntity = null;Connection connection = DBUtils.openConn();String sql = "select * from user_info where user_name = ? and user_pwd = ?";PreparedStatement statement = connection.prepareStatement(sql);statement.setString(1, userName);statement.setString(2, userPwd);ResultSet resultSet = statement.executeQuery();while (resultSet.next()) {int userId = resultSet.getInt("user_id");Date createTime = resultSet.getTimestamp("create_time");Date updateTime = resultSet.getTimestamp("update_time");userInfoEntity = new UserInfoEntity(userId, userName, userPwd, createTime, updateTime);}resultSet.close();statement.close();connection.close();return userInfoEntity;}public boolean insert(UserInfoEntity t) throws ClassNotFoundException, SQLException {boolean flag = false;// 获取与数据库的连接Connection connection = DBUtils.openConn();// ?表示占位符 可以解决sql注入的问题String sql = "insert into user_info (user_name,user_pwd,create_time) values (?,?,now())";PreparedStatement statement = connection.prepareStatement(sql);statement.setString(1, t.getUserName());statement.setString(2, t.getUserPwd());// 执行sql语句int count = statement.executeUpdate();if (count > 0) {flag = true;}statement.close();connection.close();return flag;}@Overridepublic boolean deleteById(int id) throws ClassNotFoundException, SQLException {boolean flag = false;// 获取连接Connection connection = DBUtils.openConn();// sql语句// String sql = "delete from user_info where user_id = ?";String sql = "update user_info set status = 0 where user_id = ?";// 预处理对象PreparedStatement statement = connection.prepareStatement(sql);// 添加参数statement.setInt(1, id);// 执行预处理对象int count = statement.executeUpdate();if (count > 0) {flag = true;}statement.close();connection.close();return flag;}@Overridepublic boolean update(UserInfoEntity t) throws ClassNotFoundException, SQLException {boolean flag = false;// 获取连接Connection connection = DBUtils.openConn();// sql语句String sql = "update user_info set user_name = ?,user_pwd = ? where user_id = ?";// 预处理对象PreparedStatement statement = connection.prepareStatement(sql);// 添加参数statement.setString(1, t.getUserName());statement.setString(2, t.getUserPwd());statement.setInt(3, t.getUserId());// 执行预处理对象int count = statement.executeUpdate();if (count > 0) {flag = true;}statement.close();connection.close();return flag;}@Overridepublic UserInfoEntity selectById(int id) throws ClassNotFoundException, SQLException {UserInfoEntity userInfoEntity = null;Connection connection = DBUtils.openConn();String sql = "select * from user_info where user_id = ? and status = 1";PreparedStatement statement = connection.prepareStatement(sql);statement.setInt(1, id);ResultSet resultSet = statement.executeQuery();while (resultSet.next()) {int userId = resultSet.getInt("user_id");String userName = resultSet.getString("user_name");String userPwd = resultSet.getString("user_pwd");Date createTime = resultSet.getTimestamp("create_time");Date updateTime = resultSet.getTimestamp("update_time");userInfoEntity = new UserInfoEntity(userId, userName, userPwd, createTime, updateTime);}resultSet.close();statement.close();connection.close();return userInfoEntity;}@Overridepublic List<UserInfoEntity> selectAll() throws ClassNotFoundException, SQLException {List<UserInfoEntity> list = new ArrayList<>();Connection connection = DBUtils.openConn();String sql = "select * from user_info";PreparedStatement statement = connection.prepareStatement(sql);ResultSet resultSet = statement.executeQuery();while (resultSet.next()) {int userId = resultSet.getInt("user_id");String userName = resultSet.getString("user_name");String userPwd = resultSet.getString("user_pwd");Date createTime = resultSet.getTimestamp("create_time");Date updateTime = resultSet.getTimestamp("update_time");UserInfoEntity userInfoEntity = new UserInfoEntity(userId, userName, userPwd, createTime, updateTime);list.add(userInfoEntity);}resultSet.close();statement.close();connection.close();return list;}public List<UserInfoEntity> selectByPage(int offset, int limit) throws ClassNotFoundException, SQLException {List<UserInfoEntity> list = new ArrayList<>();Connection connection = DBUtils.openConn();String sql = "select * from user_info where status = 1 limit ?,?";PreparedStatement statement = connection.prepareStatement(sql);statement.setInt(1, offset);statement.setInt(2, limit);ResultSet resultSet = statement.executeQuery();while (resultSet.next()) {int userId = resultSet.getInt("user_id");String userName = resultSet.getString("user_name");String userPwd = resultSet.getString("user_pwd");Date createTime = resultSet.getTimestamp("create_time");Date updateTime = resultSet.getTimestamp("update_time");UserInfoEntity userInfoEntity = new UserInfoEntity(userId, userName, userPwd, createTime, updateTime);list.add(userInfoEntity);}resultSet.close();statement.close();connection.close();return list;}public int selectCount() throws ClassNotFoundException, SQLException {int count = 0;Connection connection = DBUtils.openConn();String sql = "SELECT COUNT(*) AS userCount FROM user_info where status = 1";PreparedStatement statement = connection.prepareStatement(sql);ResultSet resultSet = statement.executeQuery();while (resultSet.next()) {count = resultSet.getInt("userCount");}resultSet.close();statement.close();connection.close();return count;}@Overridepublic boolean batchDeleteById(int[] ids) throws ClassNotFoundException, SQLException {boolean flag = false;// 获取连接Connection connection = DBUtils.openConn();// sql语句// String sql = "delete from user_info where user_id = ?";String sql = "update user_info set status = 0 where user_id = ?";// 预处理对象PreparedStatement statement = connection.prepareStatement(sql);// 添加参数for (int id : ids) {statement.setInt(1, id);statement.addBatch();}int[] result = statement.executeBatch();// 执行预处理对象// int count = statement.executeUpdate();if (result.length > 0) {flag = true;}statement.close();connection.close();return flag;}}package com.newcapec.entity;
ResultData.java
package com.newcapec.entity;public class ResultData<T> {private int total;private T rows;private String code;public ResultData() {super();}public ResultData(int total, T rows, String code) {super();this.total = total;this.rows = rows;this.code = code;}public int getTotal() {return total;}public void setTotal(int total) {this.total = total;}public T getRows() {return rows;}public void setRows(T rows) {this.rows = rows;}public String getCode() {return code;}public void setCode(String code) {this.code = code;}@Overridepublic String toString() {return "ResultData [total=" + total + ", rows=" + rows + ", code=" + code + "]";}}UserInfoEntity.java
package com.newcapec.entity;import java.util.Date;import com.alibaba.fastjson.annotation.JSONField;public class UserInfoEntity {private int userId;private String userName;private String userPwd;@JSONField(format = "yyyy-MM-dd HH:mm:ss")private Date createTime;@JSONField(format = "yyyy-MM-dd HH:mm:ss")private Date updateTime;public UserInfoEntity() {}public UserInfoEntity(int userId, String userName, String userPwd) {super();this.userId = userId;this.userName = userName;this.userPwd = userPwd;}public UserInfoEntity(int userId, String userName, String userPwd, Date createTime, Date updateTime) {super();this.userId = userId;this.userName = userName;this.userPwd = userPwd;this.createTime = createTime;this.updateTime = updateTime;}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 getUserPwd() {return userPwd;}public void setUserPwd(String userPwd) {this.userPwd = userPwd;}public Date getCreateTime() {return createTime;}public void setCreateTime(Date createTime) {this.createTime = createTime;}public Date getUpdateTime() {return updateTime;}public void setUpdateTime(Date updateTime) {this.updateTime = updateTime;}@Overridepublic String toString() {return "UserInfoEntity [userId=" + userId + ", userName=" + userName + ", userPwd=" + userPwd + ", createTime="+ createTime + ", updateTime=" + updateTime + "]";}}package com.newcapec.servlet;
AddUserServlet.java
package com.newcapec.servlet;import java.io.IOException; import java.sql.SQLException; import java.util.HashMap;import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import com.alibaba.fastjson.JSON; import com.newcapec.dao.UserInfoDao; import com.newcapec.entity.UserInfoEntity;/*** Servlet implementation class AddUserServlet*/ @WebServlet(name = "/AddUserServlet", urlPatterns = "/AddUserServlet") public class AddUserServlet extends HttpServlet {private static final long serialVersionUID = 1L;private UserInfoDao userInfoDao = new UserInfoDao();/*** @see HttpServlet#HttpServlet()*/public AddUserServlet() {super();// TODO Auto-generated constructor stub}/*** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse* response)*/protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {// TODO Auto-generated method stubresponse.getWriter().append("Served at: ").append(request.getContextPath());}/*** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse* response)*/protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");response.setContentType("text/json;charset=utf-8");String userName = request.getParameter("userName");String userPwd = request.getParameter("userPwd");UserInfoEntity userInfoEntity = new UserInfoEntity();userInfoEntity.setUserName(userName);userInfoEntity.setUserPwd(userPwd);try {boolean flag = userInfoDao.insert(userInfoEntity);HashMap<String, Boolean> result = new HashMap<>();result.put("flag", flag);response.getWriter().write(JSON.toJSONString(result));} catch (ClassNotFoundException | SQLException e) {// TODO 自动生成的 catch 块e.printStackTrace();}}}DeleteUserServlet.java
package com.newcapec.servlet;import java.io.IOException; import java.sql.SQLException; import java.util.Arrays; import java.util.HashMap;import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import com.alibaba.fastjson.JSON; import com.newcapec.dao.UserInfoDao;/*** Servlet implementation class DeleteUserServlet*/ @WebServlet(name = "/DeleteUserServlet", urlPatterns = "/DeleteUserServlet") public class DeleteUserServlet extends HttpServlet {private static final long serialVersionUID = 1L;private UserInfoDao userInfoDao = new UserInfoDao();/*** @see HttpServlet#HttpServlet()*/public DeleteUserServlet() {super();// TODO Auto-generated constructor stub}/*** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse* response)*/protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {// TODO Auto-generated method stubresponse.getWriter().append("Served at: ").append(request.getContextPath());}/*** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse* response)*/protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {// 此处可以使用过滤器批量处理request.setCharacterEncoding("utf-8");response.setContentType("text/json;charset=utf-8");String[] userIds = request.getParameterValues("userIds[]");// 使用userInfoDao执行批量删除int[] ids = new int[userIds.length];for (int i = 0; i < userIds.length; i++) {ids[i] = Integer.valueOf(userIds[i]);}try {boolean flag = userInfoDao.batchDeleteById(ids);HashMap<String, Boolean> result = new HashMap<>();result.put("flag", flag);response.getWriter().write(JSON.toJSONString(result));} catch (ClassNotFoundException | SQLException e) {// TODO 自动生成的 catch 块e.printStackTrace();}}}LoginServlet.java
package com.newcapec.servlet;import java.io.IOException; import java.sql.SQLException;import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import com.newcapec.dao.UserInfoDao; import com.newcapec.entity.UserInfoEntity;/*** Servlet implementation class LoginServlet*/ @WebServlet(name = "/LoginServlet", urlPatterns = "/LoginServlet") public class LoginServlet extends HttpServlet {private UserInfoDao userInfoDao = new UserInfoDao();private static final long serialVersionUID = 1L;/*** @see HttpServlet#HttpServlet()*/public LoginServlet() {super();// TODO Auto-generated constructor stub}/*** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse* response)*/protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {// TODO Auto-generated method stubresponse.getWriter().append("Served at: ").append(request.getContextPath());}/*** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse* response)*/// 注意：在正规开发中 登录密码需要加密// 需要有验证码protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("UTF-8");String userName = request.getParameter("userName");String userPwd = request.getParameter("userPwd");try {UserInfoEntity userInfoEntity = userInfoDao.login(userName, userPwd);if (userInfoEntity != null) {// 登录成功request.getSession().setAttribute("userInfo", userInfoEntity);response.sendRedirect("index.html");} else {// 登录失败 重定向response.sendRedirect("loginFailure.html");}} catch (ClassNotFoundException | SQLException e) {// TODO 自动生成的 catch 块e.printStackTrace();}}}SelectUserByIdServlet.java
package com.newcapec.servlet;import java.io.IOException; import java.sql.SQLException;import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import com.alibaba.fastjson.JSON; import com.newcapec.dao.UserInfoDao; import com.newcapec.entity.UserInfoEntity;/*** Servlet implementation class SelectUserByIdServlet*/ @WebServlet(name = "/SelectUserByIdServlet", urlPatterns = "/SelectUserByIdServlet") public class SelectUserByIdServlet extends HttpServlet {private static final long serialVersionUID = 1L;private UserInfoDao userInfoDao = new UserInfoDao();/*** @see HttpServlet#HttpServlet()*/public SelectUserByIdServlet() {super();// TODO Auto-generated constructor stub}/*** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse* response)*/protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {// 此处可以使用过滤器批量处理request.setCharacterEncoding("utf-8");response.setContentType("text/json;charset=utf-8");int userId = Integer.parseInt(request.getParameter("userId"));try {UserInfoEntity userInfoEntity = userInfoDao.selectById(userId);response.getWriter().write(JSON.toJSONString(userInfoEntity));} catch (ClassNotFoundException | SQLException e) {// TODO 自动生成的 catch 块e.printStackTrace();}}/*** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse* response)*/protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {// TODO Auto-generated method stubdoGet(request, response);}}SelectUserByPageServlet.java
package com.newcapec.servlet;import java.io.IOException; import java.sql.SQLException; import java.util.HashMap; 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;import com.alibaba.fastjson.JSON; import com.newcapec.dao.UserInfoDao; import com.newcapec.entity.ResultData; import com.newcapec.entity.UserInfoEntity;/*** Servlet implementation class SelectAllServlet*/ @WebServlet(name = "/SelectAllServlet", urlPatterns = "/SelectAllServlet") public class SelectUserByPageServlet extends HttpServlet {private static final long serialVersionUID = 1L;private UserInfoDao userInfoDao = new UserInfoDao();/*** @see HttpServlet#HttpServlet()*/public SelectUserByPageServlet() {super();// TODO Auto-generated constructor stub}/*** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse* response)*/protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setCharacterEncoding("utf-8");response.setContentType("text/json;charset=utf-8");// 当前页码// 页大小int offset = Integer.parseInt(request.getParameter("offset"));int limit = Integer.parseInt(request.getParameter("limit"));// bootstrap-table插件需要后台传回total/rowsResultData<List<UserInfoEntity>> data = new ResultData<>();try {data.setRows(userInfoDao.selectByPage(offset, limit));data.setTotal(userInfoDao.selectCount());response.getWriter().write(JSON.toJSONString(data));} catch (ClassNotFoundException | SQLException e1) {// TODO 自动生成的 catch 块e1.printStackTrace();}}/*** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse* response)*/protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {// TODO Auto-generated method stubdoGet(request, response);}}UpdateUserServlet.java
package com.newcapec.servlet;import java.io.IOException; import java.sql.SQLException; import java.util.HashMap;import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import com.alibaba.fastjson.JSON; import com.newcapec.dao.UserInfoDao; import com.newcapec.entity.UserInfoEntity;/*** Servlet implementation class UpdateUserServlet*/ @WebServlet(name = "/UpdateUserServlet", urlPatterns = "/UpdateUserServlet") public class UpdateUserServlet extends HttpServlet {private static final long serialVersionUID = 1L;private UserInfoDao userInfoDao = new UserInfoDao();/*** @see HttpServlet#HttpServlet()*/public UpdateUserServlet() {super();// TODO Auto-generated constructor stub}/*** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse* response)*/protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {// TODO Auto-generated method stubresponse.getWriter().append("Served at: ").append(request.getContextPath());}/*** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse* response)*/protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {// 此处可以使用过滤器批量处理request.setCharacterEncoding("utf-8");response.setContentType("text/json;charset=utf-8");int userId = Integer.parseInt(request.getParameter("userId"));String userName = request.getParameter("userName");String userPwd = request.getParameter("userPwd");UserInfoEntity entity = new UserInfoEntity(userId, userName, userPwd);try {boolean flag = userInfoDao.update(entity);HashMap<String, Boolean> result = new HashMap<>();result.put("flag", flag);response.getWriter().write(JSON.toJSONString(result));} catch (ClassNotFoundException | SQLException e) {// TODO 自动生成的 catch 块e.printStackTrace();}}}多谢观看~
总结
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