添加功能_实现与删除功能_分析
添加功能_实现
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!-- HTML5文档--> <!DOCTYPE html> <!-- 网页使用的语言 --> <html lang="zh-CN"> <head> <!-- 指定字符集 --> <meta charset="utf-8"> <!-- 使用Edge最新的浏览器的渲染方式 --> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <!-- viewport视口:网页可以根据设置的宽度自动进行适配,在浏览器的内部虚拟一个容器,容器的宽度与设备的宽度相同。 width: 默认宽度与设备的宽度相同 initial-scale: 初始的缩放比,为1:1 --> <meta name="viewport" content="width=device-width, initial-scale=1"> <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! --> <title>添加用户</title> <!-- 1. 导入CSS的全局样式 --> <link href="css/bootstrap.min.css" rel="stylesheet"> <!-- 2. jQuery导入,建议使用1.9以上的版本 --> <script src="js/jquery-2.1.0.min.js"></script> <!-- 3. 导入bootstrap的js文件 --> <script src="js/bootstrap.min.js"></script> </head> <body> <div class="container"> <center><h3>添加联系人页面</h3></center> <form action="${pageContext.request.contextPath}/addUserServlet" method="post"> <div class="form-group"> <label for="name">姓名:</label> <input type="text" class="form-control" id="name" name="name" placeholder="请输入姓名"> </div> <div class="form-group"> <label>性别:</label> <input type="radio" name="gender" value="男" checked="checked"/>男 <input type="radio" name="gender" value="女"/>女 </div> <div class="form-group"> <label for="age">年龄:</label> <input type="text" class="form-control" id="age" name="age" placeholder="请输入年龄"> </div> <div class="form-group"> <%--@declare id="address"--%><label for="address">籍贯:</label> <select name="address" class="form-control" id="jiguan"> <option value="杭城">杭城</option> <option value="博城">博城</option> <option value="明珠">明珠</option> </select> </div> <div class="form-group"> <%--@declare id="qq"--%><label for="qq">QQ:</label> <input type="text" class="form-control" name="qq" placeholder="请输入QQ号码"/> </div> <div class="form-group"> <%--@declare id="email"--%><label for="email">Email:</label> <input type="text" class="form-control" name="email" placeholder="请输入邮箱地址"/> </div> <div class="form-group" style="text-align: center"> <input class="btn btn-primary" type="submit" value="提交" /> <input class="btn btn-default" type="reset" value="重置" /> <input class="btn btn-default" type="button" value="返回" /> </div> </form> </div> </body> </html>
package hf.xueqiang.web.servlet; import hf.xueqiang.domain.User; import hf.xueqiang.service.UserService; import hf.xueqiang.service.impl.UserServiceImpl; import org.apache.commons.beanutils.BeanUtils; import javax.servlet.*; import javax.servlet.http.*; import javax.servlet.annotation.*; import java.io.IOException; import java.lang.reflect.InvocationTargetException; import java.util.Map; @WebServlet("/addUserServlet") public class AddUserServlet extends HttpServlet { @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //1.设置编码 request.setCharacterEncoding("utf-8"); //2.获取参数 Map<String, String[]> map = request.getParameterMap(); //3.封装对象 User user = new User(); try { BeanUtils.populate(user,map); } catch (IllegalAccessException e) { throw new RuntimeException(e); } catch (InvocationTargetException e) { throw new RuntimeException(e); } //4.调用Service保存 UserService service = new UserServiceImpl(); service.addUser(user); //5.跳转到UserListServlet response.sendRedirect(request.getContextPath()+"/userListServlet"); } @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } }
添加联系人:
没添加之前:
添加成功之后:
删除功能_分析