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用户信息添加功能和删除功能

时间:2022-08-16 21:17:23浏览次数:50  
标签:功能 删除 void request response 添加 user sql id

用户信息添加功能

分析:

 

 

list.jsp:进行修改一下

 

 

 

 add.jsp:

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!-- 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">
            <label for="address">籍贯:</label>
            <select name="address" class="form-control" id="address">
                <option value="峡西">峡西</option>
                <option value="广西">广西</option>
                <option value="湖南">湖南</option>
            </select>
        </div>

        <div class="form-group">
            <label for="qq">QQ:</label>
            <input type="text" class="form-control" id="qq" name="qq" placeholder="请输入QQ号码"/>
        </div>

        <div class="form-group">
            <label for="email">Email:</label>
            <input type="text" class="form-control" id="email" 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>

UserDao:添加一个方法

    void add(User user);

UserDaoImpl:重写方法

    @Override
    public void add(User user) {
        //定义sql
        String sql = "insert into user values(null,?,?,?,?,?,?,null,null)";
        //执行sql
        template.update(sql,user.getName(),user.getGender(),user.getAge(),user.getAddress(),user.getQq(),user.getEmail());
    }

UserService:

    /**
     * 保存User
     * @param user
     */
    void addUser(User user);

UserServiceImpl:

    @Override
    public void addUser(User user) {
        dao.add(user);
    }

AddUserServlet

@WebServlet("/addUserServlet")
public class AddUserServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //设置编码
        request.setCharacterEncoding("utf-8");
        //获取参数
        Map<String, String[]> map = request.getParameterMap();
        //封装对象
        User user = new User();
        try {
            BeanUtils.populate(user,map);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
        //调用Service保存
        UserServiceImpl service = new UserServiceImpl();
        service.addUser(user);
        //跳转到userListServlet
        response.sendRedirect(request.getContextPath()+"/userListServlet");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

添加完成

 

用户信息删除功能

分析:

list.jsp:进行修改:

 

UserDao:

 

void delete(int id);

UserDaoImpl:

    @Override
    public void delete(int id) {
        //定义sql
        String sql = "delete from user where id = ?";
        //执行sql
        template.update(sql,id);
    }

UserService:

    /**
     * 根据id删除user
     * @param id
     */
    void deleteUser(String id);

UserServiceImpl

    @Override
    public void deleteUser(String id) {
        dao.delete(Integer.parseInt(id));
    }

delUserServlet实现:

@WebServlet("/delUserServlet")
public class delUserServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //获取id
        String id = request.getParameter("id");
        //调用service删除
        UserServiceImpl service = new UserServiceImpl();
        service.deleteUser(id);
        //跳转到查询所有的Servlet
        response.sendRedirect(request.getContextPath()+"/userListServlet");

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

 

 

 

 

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标签:功能,删除,void,request,response,添加,user,sql,id
From: https://www.cnblogs.com/pengtianyang/p/16592405.html

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