JavaWeb JavaBean JSP MVC MySQL Tomcat JavaScript Bootstrap
基础JSP+Servlet或JSP+SSM(Spring、SpringMVC、MyBatis)框架或JSP+SSM+Maven(pom.xml)框架或SpringBoot…均可
开发工具:eclipse/idea/myeclipse/sts等均可配置运行
适用
课程设计,大作业,毕业设计,项目练习,学习演示等
str = new String(str.getBytes("ISO-8859-1"), "UTF-8");
}
if (isMessyCode(str)) {
str = new String(str.getBytes("GB2312"), "UTF-8");
}
if (isMessyCode(str)) {
str = new String(str.getBytes("GBK"), "UTF-8");
}
if (isMessyCode(str)) {
str = new String(str.getBytes("UTF-8"), "ISO-8859-1");
}
if (isMessyCode(str)) {
str = new String(str.getBytes("GB2312"), "ISO-8859-1");
}
if (isMessyCode(str)) {
str = new String(str.getBytes("GBK"), "ISO-8859-1");
}
</div>
<div class="form-group">
<label class="col-sm-3 control-label">性别:</label>
<div class="col-sm-5">
<input name="jiaoyuanSex" type="radio" value="男" checked="checked"/> 男
<input name="jiaoyuanSex" type="radio" value="女"/> 女
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">学历:</label>
<div class="col-sm-5">
<input type="text" class="form-control" id="jiaoyuanXueli" name="jiaoyuanXueli">
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">联系方式:</label>
<div class="col-sm-5">
<input type="text" class="form-control" id="jiaoyuanPhone" name="jiaoyuanPhone">
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">教学项目:</label>
<div class="col-sm-5">
/**
* 处理Get请求
*
* @param request
* @param response
* @throws ServletException
* @throws IOException
*/
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);//Get请求和Post请求的处理是一样的,所以把request、response转交给Post方法就好
}
/**
* 根据参数,查询出条例条件的记录集合,最后将数据返回给调用处或者将数据集合设置到session域里,再跳转到对应的列表页面
String action = Util.decode(request, "action");
if ("add".equals(action)) {//增加
Jiaoyuan vo = new Jiaoyuan();
//取出页面传进来的各个数据,并设置到Jiaoyuan对象的属性里
vo.setJiaoyuanName(Util.decode(request, "jiaoyuanName"));
vo.setJiaoyuanAge(Util.decode(request, "jiaoyuanAge"));
vo.setJiaoyuanSex(Util.decode(request, "jiaoyuanSex"));
vo.setJiaoyuanXueli(Util.decode(request, "jiaoyuanXueli"));
vo.setJiaoyuanPhone(Util.decode(request, "jiaoyuanPhone"));
vo.setJiaoyuanNeirong(Util.decode(request, "jiaoyuanNeirong"));
vo.setJiaoyuanPrice(Util.decode(request, "jiaoyuanPrice"));
vo.setJiaoyuanDate(Util.decode(request, "jiaoyuanDate"));
vo.setJiaoyuanStatus(Util.decode(request, "jiaoyuanStatus"));
vo.setJiaoyuanText(Util.decode(request, "jiaoyuanText"));
JiaoyuanService jiaoyuanService = new JiaoyuanServiceImpl();
this.redirectList(request, response);
} else if ("edit".equals(action)) {//修改
//取出页面传进来的各个数据,并设置到Xueyuan对象的属性里
Xueyuan vo = new Xueyuan();
vo.setId(Long.valueOf(Util.decode(request, "id")));
vo.setXueyuanName(Util.decode(request, "xueyuanName"));
vo.setXueyuanAge(Util.decode(request, "xueyuanAge"));
vo.setXueyuanSex(Util.decode(request, "xueyuanSex"));
vo.setXueyuanPhone(Util.decode(request, "xueyuanPhone"));
vo.setXueyuanNeirong(Util.decode(request, "xueyuanNeirong"));
vo.setXueyuanDate(Util.decode(request, "xueyuanDate"));
vo.setXueyuanPrice(Util.decode(request, "xueyuanPrice"));
vo.setXueyuanText(Util.decode(request, "xueyuanText"));
XueyuanService xueyuanService = new XueyuanServiceImpl();
//调用Service层更新方法(update),更新记录
xueyuanService.update(vo);
this.redirectList(request, response);
} else if ("get".equalsIgnoreCase(action) || "editPre".equalsIgnoreCase(action)) {//根据主键ID,查询详情信息并跳转到详情页面或编辑页面
Serializable id = Util.decode(request, "id");//取出页面传入的主键,用于查询详情
XueyuanService xueyuanService = new XueyuanServiceImpl();
Xueyuan vo = xueyuanService.get(id);
request.getSession().setAttribute("vo", vo);
String to = "get".equalsIgnoreCase(action) ? "info" : "edit";//判断是去详情显示页面还是编辑页面
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">手机:</label>
<div class="col-sm-5">
<input type="text" class="form-control" id="userPhone" name="userPhone" value="${vo.userPhone}">
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">备注:</label>
<div class="col-sm-5">
<textarea rows="3" class="form-control" id="userText" name="userText" placeholder="请输入内容......">${vo.userText}</textarea>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">类型:</label>
<div class="col-sm-5">
<input <c:if test="${loginUser.userType != '管理员'}">disabled="disabled" title="没有权限!!!"</c:if> name="userType" type="radio" value="管理员" ${vo.userType=='管理员'?'checked':''}/> 管理员
<input name="userType" type="radio" value="普通用户" ${vo.userType=='普通用户'?'checked':''}/> 普通用户
</div>
</div>
<div class="form-group">
Integer totalRecord = (Integer) map.get("totalCount");//根据查询条件取出对应的总记录数,用于分页
String pageNum = Util.decode(request, "pageNum");//封装分页参数
com.demo.util.PageBean<Object> pb = new com.demo.util.PageBean(Integer.valueOf(pageNum != null ? pageNum : "1"), totalRecord);
params.put("startIndex", pb.getStartIndex());
params.put("pageSize", pb.getPageSize());
List list = (List) xueyuanService.list(params).get("list");//根据分页参数startIndex、pageSize查询出来的最终结果list
pb.setServlet("XueyuanServlet");
pb.setSearchColumn(searchColumn);
pb.setKeyword(keyword);
pb.setList(list);
request.getSession().setAttribute("pageBean", pb);
request.getSession().setAttribute("list", pb.getList());
response.sendRedirect("xueyuan_list.jsp");
}
}
package com.demo.servlet;
import com.demo.util.Util;
import com.demo.service.UserService;
import com.demo.service.impl.UserServiceImpl;
import com.demo.vo.User;
response.setCharacterEncoding("UTF-8");
String action = Util.decode(request, "action");
if ("add".equals(action)) {//增加
Xueyuan vo = new Xueyuan();
//取出页面传进来的各个数据,并设置到Xueyuan对象的属性里
vo.setXueyuanName(Util.decode(request, "xueyuanName"));
vo.setXueyuanAge(Util.decode(request, "xueyuanAge"));
vo.setXueyuanSex(Util.decode(request, "xueyuanSex"));
vo.setXueyuanPhone(Util.decode(request, "xueyuanPhone"));
vo.setXueyuanNeirong(Util.decode(request, "xueyuanNeirong"));
vo.setXueyuanDate(Util.decode(request, "xueyuanDate"));
<label class="col-sm-3 control-label">详细说明:</label>
<div class="col-sm-5">
<textarea rows="3" class="form-control" id="xueyuanText" name="xueyuanText" placeholder="请输入内容......"></textarea>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label"></label>
<div class="col-sm-5">
<input type="submit" class="btn btn-line btn-default btn-sm" value="保存">
<input type="button" class="btn btn-line btn-default btn-sm" value="返回" onclick="javascript:history.back(-1);">
</div>
</div>
</form>
</div>
</body>
<script type="text/javascript">
//提交之前进行检查,如果return false,则不允许提交
function check() {
//根据ID获取值
if (document.getElementById("xueyuanName").value.trim().length == 0) {
alert("学员姓名不能为空!");
return false;
}
if (document.getElementById("xueyuanAge").value.trim().length == 0) {
package com.demo.servlet;
import com.demo.util.Util;
import com.demo.service.NoticeService;
import com.demo.service.impl.NoticeServiceImpl;
import com.demo.vo.Notice;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* 公告模块的Servlet控制层,负责接收页面传过来的请求参数,根据action参数的值来确定页面要执行的具体操作<br>
* 而后再调用NoticeService业务层的方法来处理具体的业务,最后将处理完成的结果返回或跳转至相应页面
*/
//@WebServlet("/NoticeServlet")
public class NoticeServlet extends HttpServlet {
request.getRequestDispatcher("login.jsp").forward(request, response);
} else if ("register".equalsIgnoreCase(action)) {//注册
String username = Util.decode(request, "username");
String password = Util.decode(request, "password");
System.out.println("username=" + username);
System.out.println("password=" + password);
UserService userService = new UserServiceImpl();
Map<String, Object> params = new HashMap();
params.put("searchColumn", "username");//使用`username`字段进行模糊查询
params.put("keyword", username);
params.put("startIndex", 0);
params.put("pageSize", Long.MAX_VALUE);
Connection c = Util.getConnection();
Statement s = c.createStatement();
String sql = "delete from `t_jiaoyuan` where id = " + id;
s.execute(sql);
s.close();
c.close();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
//@Override
public Jiaoyuan get(Serializable id) {
Jiaoyuan vo = null;
try {
Connection c = Util.getConnection();
*/
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//过滤编码
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
String action = Util.decode(request, "action");
if ("add".equals(action)) {//增加
Notice vo = new Notice();
//取出页面传进来的各个数据,并设置到Notice对象的属性里
vo.setNoticeName(Util.decode(request, "noticeName"));
vo.setNoticeText(Util.decode(request, "noticeText"));
vo.setNoticeType(Util.decode(request, "noticeType"));
vo.setCreateDate(Util.decode(request, "createDate"));
NoticeService noticeService = new NoticeServiceImpl();
//调用Service层增加方法(add),增加记录
noticeService.add(vo);
this.redirectList(request, response);
} else if ("delete".equals(action)) {//删除
//取出表要删除的公告记录的主键
long id = Long.parseLong(Util.decode(request, "id"));
NoticeService noticeService = new NoticeServiceImpl();
String codeChars = "0123456789";// 图形验证码的字符集合,系统将随机从这个字符串中选择一些字符作为验证码
// 获得验证码集合的长度
int charsLength = codeChars.length();
// 下面三条记录是关闭客户端浏览器的缓冲区
// 这三条语句都可以关闭浏览器的缓冲区,但是由于浏览器的版本不同,对这三条语句的支持也不同
// 因此,为了保险起见,建议同时使用这三条语句来关闭浏览器的缓冲区
response.setHeader("ragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
// 设置图形验证码的长和宽(图形的大小)
int width = 90, height = 20;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();// 获得用于输出文字的Graphics对象
Random random = new Random();
g.setColor(getRandomColor(180, 250));// 随机设置要填充的颜色
g.fillRect(0, 0, width, height);// 填充图形背景
// 设置初始字体
<div class="col-sm-5">
<textarea rows="3" class="form-control" id="xueyuanText" name="xueyuanText" placeholder="请输入内容......"></textarea>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label"></label>
<div class="col-sm-5">
<input type="submit" class="btn btn-line btn-default btn-sm" value="保存">
<input type="button" class="btn btn-line btn-default btn-sm" value="返回" onclick="javascript:history.back(-1);">
</div>
</div>
</form>
</div>
</body>
<script type="text/javascript">
//提交之前进行检查,如果return false,则不允许提交
function check() {
/**
* 根据参数,查询出条例条件的记录集合,最后将数据返回给调用处或者将数据集合设置到session域里,再跳转到对应的列表页面
*
* @param request
* @param response
*/
private void redirectList(HttpServletRequest request, HttpServletResponse response) throws IOException {
//查询列和关键字
String searchColumn = Util.decode(request, "searchColumn");
String keyword = Util.decode(request, "keyword");
Map<String, Object> params = new HashMap();//用来保存控制层传进来的参数(查询条件)
params.put("searchColumn", searchColumn);//要查询的列
params.put("keyword", keyword);//查询的关键字
NoticeService noticeService = new NoticeServiceImpl();
}
response.sendRedirect("login.jsp");
} else if ("validationCode".equalsIgnoreCase(action)) {
String codeChars = "0123456789";// 图形验证码的字符集合,系统将随机从这个字符串中选择一些字符作为验证码
// 获得验证码集合的长度
int charsLength = codeChars.length();
// 下面三条记录是关闭客户端浏览器的缓冲区
// 这三条语句都可以关闭浏览器的缓冲区,但是由于浏览器的版本不同,对这三条语句的支持也不同
// 因此,为了保险起见,建议同时使用这三条语句来关闭浏览器的缓冲区
response.setHeader("ragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
// 设置图形验证码的长和宽(图形的大小)
int width = 90, height = 20;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();// 获得用于输出文字的Graphics对象
Random random = new Random();
g.setColor(getRandomColor(180, 250));// 随机设置要填充的颜色
g.fillRect(0, 0, width, height);// 填充图形背景
// 设置初始字体
g.setFont(new Font("Times New Roman", Font.ITALIC, height));
vo.setJiaoyuanPhone(rs.getString("jiaoyuan_phone"));
vo.setJiaoyuanNeirong(rs.getString("jiaoyuan_neirong"));
vo.setJiaoyuanPrice(rs.getString("jiaoyuan_price"));
vo.setJiaoyuanDate(rs.getString("jiaoyuan_date"));
vo.setJiaoyuanStatus(rs.getString("jiaoyuan_status"));
vo.setJiaoyuanText(rs.getString("jiaoyuan_text"));
list.add(vo);
}
String sqlCount = "select count(*) from `t_jiaoyuan` where 1=1 " + condition;
ps = c.prepareStatement(sqlCount);
rs = ps.executeQuery();
if (rs.next()) {
totalCount = rs.getInt(1);
}
rs.close();
if (maxColor > 255)
maxColor = 255;
// 获得红色的随机颜色值
int red = minColor + random.nextInt(maxColor - minColor);
// 获得绿色的随机颜色值
int green = minColor + random.nextInt(maxColor - minColor);
// 获得蓝色的随机颜色值
int blue = minColor + random.nextInt(maxColor - minColor);
return new Color(red, green, blue);
}
}
package com.demo.servlet;
import com.demo.util.Util;
import com.demo.service.JiaoyuanService;
import com.demo.service.impl.JiaoyuanServiceImpl;
import com.demo.vo.Jiaoyuan;
import javax.servlet.ServletException;
<div class="form-group">
<label class="col-sm-3 control-label">用户名:</label>
<div class="col-sm-5">
<input type="text" class="form-control" id="username" name="username" value="${vo.username}">
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">密码:</label>
<div class="col-sm-5">
<input type="text" class="form-control" id="password" name="password" value="${vo.password}">
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">姓名:</label>
XueyuanService xueyuanService = new XueyuanServiceImpl();
//调用Service层更新方法(update),更新记录
xueyuanService.update(vo);
this.redirectList(request, response);
} else if ("get".equalsIgnoreCase(action) || "editPre".equalsIgnoreCase(action)) {//根据主键ID,查询详情信息并跳转到详情页面或编辑页面
Serializable id = Util.decode(request, "id");//取出页面传入的主键,用于查询详情
XueyuanService xueyuanService = new XueyuanServiceImpl();
Xueyuan vo = xueyuanService.get(id);
request.getSession().setAttribute("vo", vo);
String to = "get".equalsIgnoreCase(action) ? "info" : "edit";//判断是去详情显示页面还是编辑页面
response.sendRedirect("xueyuan_" + to + ".jsp");
} else {//默认去列表页面
this.redirectList(request, response);
}
}
/**
* 处理Get请求
*
* @param request
* @param response
* @throws ServletException
* @throws IOException
*/
try {
Connection c = Util.getConnection();
Statement s = c.createStatement();
String sql = "select * from `t_user` where id = " + id;
ResultSet rs = s.executeQuery(sql);
if (rs.next()) {
vo = new User();
vo.setId(rs.getLong("id"));
vo.setUsername(rs.getString("username"));
vo.setPassword(rs.getString("password"));
vo.setRealName(rs.getString("real_name"));
vo.setUserSex(rs.getString("user_sex"));
vo.setUserPhone(rs.getString("user_phone"));
/**
* 处理Get请求
*
* @param request
* @param response
* @throws ServletException
* @throws IOException
*/
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);//Get请求和Post请求的处理是一样的,所以把request、response转交给Post方法就好
}
/**
* 根据参数,查询出条例条件的记录集合,最后将数据返回给调用处或者将数据集合设置到session域里,再跳转到对应的列表页面
*
* @param request
* @param response
*/
private void redirectList(HttpServletRequest request, HttpServletResponse response) throws IOException {
//查询列和关键字
String searchColumn = Util.decode(request, "searchColumn");
String keyword = Util.decode(request, "keyword");
try {
Connection c = Util.getConnection();
Statement s = c.createStatement();
String sql = "delete from `t_jiaoyuan` where id = " + id;
s.execute(sql);
s.close();
c.close();
return true;
} catch (Exception e) {
e.printStackTrace();
String sql = "update `t_notice` set `notice_name` = ? ,`notice_text` = ? ,`notice_type` = ? ,`create_date` = ? where `id` = ?";
try {
Connection c = Util.getConnection();
PreparedStatement ps = c.prepareStatement(sql);
ps.setString(1, vo.getNoticeName());
ps.setString(2, vo.getNoticeText());
ps.setString(3, vo.getNoticeType());
ps.setString(4, vo.getCreateDate());
ps.setLong(5, vo.getId());
ps.execute();
ps.close();
c.close();
} catch (Exception e) {
e.printStackTrace();
}
}
//@Override
public boolean delete(long id) {
try {
Connection c = Util.getConnection();
Statement s = c.createStatement();
String sql = "delete from `t_notice` where id = " + id;
运行环境
Java≥6、Tomcat≥7.0、MySQL≥5.5
开发工具
eclipse/idea/myeclipse/sts等均可配置运行
技术框架
JavaWeb JavaBean JSP MVC MySQL Tomcat JavaScript Bootstrap
基础JSP+Servlet或JSP+SSM(Spring、SpringMVC、MyBatis)框架或JSP+SSM+Maven(pom.xml)框架或SpringBoot…均可
适用
课程设计,大作业,毕业设计,项目练习,学习演示等
功能说明
登录、注册、退出、用户模块、公告模块、教员模块、学员模块的增删改查管理
↖[获取源码方式]见左侧