转：https://blog.youkuaiyun.com/qq_23994787/article/details/73612870
主要功能有： 涉及到的知识点有：
1.用户注册 1.JDBC
2.用户登录 2.Servlet
3.用户列表展示 3.过滤器
4.用户信息修改 4..EL与JSTL表达式
5.用户信息删除
//新建数据库，这一步没什么好说的
-
CREATE
TABLE
`user` (
-
`id`
int(
11)
NOT
NULL auto_increment,
-
`name`
varchar(
255)
NOT
NULL,
-
`pwd`
varchar(
255)
NOT
NULL,
-
`sex`
varchar(
255)
NOT
NULL,
-
`home`
varchar(
255)
NOT
NULL,
-
`info`
varchar(
255)
NOT
NULL,
-
PRIMARY
KEY (
`id`)
-
)
ENGINE=
InnoDB AUTO_INCREMENT=
5
DEFAULT
CHARSET=utf8;
-
-
-
INSERT
INTO
`user`
VALUES (
'3',
'123',
'123',
'123',
'123',
'123');
-
INSERT
INTO
`user`
VALUES (
'4',
'123123',
'123123',
'男',
'北京',
'123123');
建立对应的包
新建一个过滤器类 Filter
-
package com.filter;
-
-
import java.io.IOException;
-
-
import javax.servlet.Filter;
-
import javax.servlet.FilterChain;
-
import javax.servlet.FilterConfig;
-
import javax.servlet.ServletException;
-
import javax.servlet.ServletRequest;
-
import javax.servlet.ServletResponse;
-
/**
-
1.两者都是为了初始化用，但是不推荐在构造函数中对servlet做初始化工作。
-
-
2.servlet实例的生命周期是由容器控制的。构造函数中的初始化工作只会在容器构造这个servlet时做一次。
-
-
3.servlet的实例是会被多个请求复用，但是构造函数却只能提供一次初始化，所以必须将初始化工作放入init中，由容器来控制。
-
*/
-
-
public
class EncodingFilter implements Filter{
-
public EncodingFilter(){
-
System.out.println(
"过滤器构造");
-
}
-
public void destroy() {
-
System.out.println(
"过滤器销毁");
-
}
-
-
/**
-
过滤器拦截到响应url的请求后会先执行doFilter()方法中chain.doFilter()之前的代码，
-
然后执行下一个过滤器或者servelt。紧接着执行chain.doFilter()之后的代码
-
*/
-
public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException {
-
request.setCharacterEncoding(
"utf-8");
//将编码改为utf-8
-
response.setContentType(
"text/html;charset=utf-8");
-
chain.doFilter(request, response);
-
}
-
-
public void init(FilterConfig arg0) throws ServletException {
-
System.out.println(
"过滤器初始化");
-
}
-
-
}
在web.xml进行过滤器的相应配置
-
<?xml version="1.0" encoding="UTF-8"?>
-
<web-app version="2.5"
-
xmlns=
"http://java.sun.com/xml/ns/javaee"
-
xmlns:xsi=
"http://www.w3.org/2001/XMLSchema-instance"
-
xsi:schemaLocation=
"http://java.sun.com/xml/ns/javaee
-
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
-
<display-name>
</display-name>
-
-
-
<!-- 配置Filter的过滤器名和路径名 -->
-
<filter>
-
<filter-name>EncodingFilter
</filter-name>
-
<filter-class>com.filter.EncodingFilter
</filter-class>
<!--全路径 从根包开始一直到类名-->
-
</filter>
-
<filter-mapping>
-
<filter-name>EncodingFilter
</filter-name>
-
<url-pattern>/*
</url-pattern>
<!--*即为过滤所有-->
-
</filter-mapping>
-
-
-
<welcome-file-list>
-
<welcome-file>denglu.jsp
</welcome-file>
-
</welcome-file-list>
-
</web-app>
新建一个DBconn类用来处理对数据库的连接操作（用户名或密码按照自己的数据库更改）
-
package com.util;
-
-
import java.sql.*;
-
-
public
class DBconn {
-
static String url =
"jdbc:mysql://localhost:3306/test?useunicuee=true& characterEncoding=utf8";
-
static String username =
"root";
-
static String password =
"root";
-
static Connection conn =
null;
-
static ResultSet rs =
null;
-
static PreparedStatement ps =
null;
-
public static void init(){
-
try {
-
Class.forName(
"com.mysql.jdbc.Driver");
-
conn = DriverManager.getConnection(url,username,password);
-
}
catch (Exception e) {
-
System.out.println(
"init [SQL驱动程序初始化失败！]");
-
e.printStackTrace();
-
}
-
}
-
public static int addUpdDel(String sql){
-
int i =
0;
-
try {
-
PreparedStatement ps = conn.prepareStatement(sql);
-
i = ps.executeUpdate();
-
}
catch (SQLException e) {
-
System.out.println(
"sql数据库增删改异常");
-
e.printStackTrace();
-
}
-
-
return i;
-
}
-
public static ResultSet selectSql(String sql){
-
try {
-
ps = conn.prepareStatement(sql);
-
rs = ps.executeQuery(sql);
-
}
catch (SQLException e) {
-
System.out.println(
"sql数据库查询异常");
-
e.printStackTrace();
-
}
-
return rs;
-
}
-
public static void closeConn(){
-
try {
-
conn.close();
-
}
catch (SQLException e) {
-
System.out.println(
"sql数据库关闭异常");
-
e.printStackTrace();
-
}
-
}
-
}
在entity下新建一个User实体类（实体即抽象出来的用户对象，对应数据库中的user表,表中每个字段在实体中为一个属性，也可以理解为一个User对象对应数据库中的user表一条记录）
-
package com.entity;
-
-
public
class User {
-
private
int id;
-
private String name;
-
private String pwd;
-
private String sex;
-
private String home;
-
private String info;
-
public int getId() {
-
return id;
-
}
-
public void setId(int id) {
-
this.id = id;
-
}
-
public String getName() {
-
return name;
-
}
-
public void setName(String name) {
-
this.name = name;
-
}
-
public String getPwd() {
-
return pwd;
-
}
-
public void setPwd(String pwd) {
-
this.pwd = pwd;
-
}
-
public String getSex() {
-
return sex;
-
}
-
public void setSex(String sex) {
-
this.sex = sex;
-
}
-
public String getHome() {
-
return home;
-
}
-
public void setHome(String home) {
-
this.home = home;
-
}
-
public String getInfo() {
-
return info;
-
}
-
public void setInfo(String info) {
-
this.info = info;
-
}
-
-
}
-
package com.dao;
-
-
import java.util.List;
-
-
import com.entity.User;
-
-
public
interface UserDao {
-
public boolean login(String name,String pwd);
//登录
-
public boolean register(User user);
//注册
-
public List<User> getUserAll();
//返回用户信息集合
-
public boolean delete(int id) ;
//根据id删除用户
-
public boolean update(int id,String name, String pwd,String sex, String home,String info) ;
//更新用户信息
-
}
新建UserDaoImpl.java 实现UserDao接口，及未实现的方法 （SQL语句建议在mysql中测试以下，没有问题然后在拿到实现类中使用，可以避免无必要的麻烦）
本例子SQL使用字符串拼接的方式，其实还有一种预加载的方式，有兴趣的童鞋可以参考我的博客，了解预加载的方式处理SQL语句与字符串拼接方式的区别。
-
package com.dao;
-
-
import java.sql.ResultSet;
-
import java.sql.SQLException;
-
import java.util.ArrayList;
-
import java.util.List;
-
-
import com.entity.User;
-
import com.util.DBconn;
-
-
public
class UserDaoImpl implements UserDao{
-
-
public boolean register(User user) {
-
boolean flag =
false;
-
DBconn.init();
-
int i =DBconn.addUpdDel(
"insert into user(name,pwd,sex,home,info) " +
-
"values('"+user.getName()+
"','"+user.getPwd()+
"','"+user.getSex()+
"','"+user.getHome()+
"','"+user.getInfo()+
"')");
-
if(i>
0){
-
flag =
true;
-
}
-
DBconn.closeConn();
-
return flag;
-
}
-
public boolean login(String name, String pwd) {
-
boolean flag =
false;
-
try {
-
DBconn.init();
-
ResultSet rs = DBconn.selectSql(
"select * from user where name='"+name+
"' and pwd='"+pwd+
"'");
-
while(rs.next()){
-
if(rs.getString(
"name").equals(name) && rs.getString(
"pwd").equals(pwd)){
-
flag =
true;
-
}
-
}
-
DBconn.closeConn();
-
}
catch (SQLException e) {
-
e.printStackTrace();
-
}
-
return flag;
-
}
-
public List<User> getUserAll() {
-
List<User> list =
new ArrayList<User>();
-
try {
-
DBconn.init();
-
ResultSet rs = DBconn.selectSql(
"select * from user");
-
while(rs.next()){
-
User user =
new User();
-
user.setId(rs.getInt(
"id"));
-
user.setName(rs.getString(
"name"));
-
user.setPwd(rs.getString(
"pwd"));
-
user.setSex(rs.getString(
"sex"));
-
user.setHome(rs.getString(
"home"));
-
user.setInfo(rs.getString(
"info"));
-
list.add(user);
-
}
-
DBconn.closeConn();
-
return list;
-
}
catch (SQLException e) {
-
e.printStackTrace();
-
}
-
return
null;
-
}
-
public boolean update(int id,String name, String pwd,String sex, String home,String info) {
-
boolean flag =
false;
-
DBconn.init();
-
String sql =
"update user set name ='"+name
-
+
"' , pwd ='"+pwd
-
+
"' , sex ='"+sex
-
+
"' , home ='"+home
-
+
"' , info ='"+info+
"' where id = "+id;
-
int i =DBconn.addUpdDel(sql);
-
if(i>
0){
-
flag =
true;
-
}
-
DBconn.closeConn();
-
return flag;
-
}
-
public boolean delete(int id) {
-
boolean flag =
false;
-
DBconn.init();
-
String sql =
"delete from user where id="+id;
-
int i =DBconn.addUpdDel(sql);
-
if(i>
0){
-
flag =
true;
-
}
-
DBconn.closeConn();
-
return flag;
-
}
-
-
}
在servlet下创建DengluServlet用来实现对用户登录的操作（Servlet有两种方式创建，一种手工创建。另一种程序自动生成。前者自己创建java类，实现Servlet具体内容，然后需要去WEB_INF下的web.xml去配置servlet . 而后者则直接由程序替我们配置好了Servlet）本例子使用第二种方式生成Servlet
-
package com.servlet;
-
-
import java.io.IOException;
-
import java.io.PrintWriter;
-
-
import javax.servlet.ServletException;
-
import javax.servlet.http.HttpServlet;
-
import javax.servlet.http.HttpServletRequest;
-
import javax.servlet.http.HttpServletResponse;
-
-
import com.dao.UserDao;
-
import com.dao.UserDaoImpl;
-
-
public
class DengluServlet extends HttpServlet {
//需要继承HttpServlet 并重写doGet doPost方法
-
public void doGet(HttpServletRequest request, HttpServletResponse response)
-
throws ServletException, IOException {
-
doPost(request, response);
//将信息使用doPost方法执行 对应jsp页面中的form表单中的method
-
}
-
public void doPost(HttpServletRequest request, HttpServletResponse response)
-
throws ServletException, IOException {
-
-
String name = request.getParameter(
"name");
//得到jsp页面传过来的参数
-
String pwd = request.getParameter(
"pwd");
//得到jsp中action传来的参数
-
-
UserDao ud =
new UserDaoImpl();
-
-
//存在用户名密码
-
/**
-
request.getAttribute表示从request范围取得设置的属性，
-
必须要先setAttribute设置属性，才能通过getAttribute来取得，
-
设置与取得的为Object对象类型 。
-
*/
-
if(ud.login(name, pwd)){
-
request.setAttribute(
"xiaoxi",
"欢迎用户"+name);
//向request域中放置信息
-
request.getRequestDispatcher(
"/success.jsp").forward(request, response);
//转发到成功页面
-
}
else{
-
response.sendRedirect(
"index.jsp");
//重定向到首页
-
}
-
}
-
-
}
request.getRequestDispatcher()有两种跳转：
（1）跳转到一个servlet
request.getRequestDispatcher("想跳转的servlet名").forward(request, response);
（2）跳转到一个页面
request.getRequestDispatcher("文件路径").forward(request, response);
response.sendRedirect("cart.jsp");
response.sendRedirect(url) -- 重定向到指定URL
request.getRequestDispatcher(url).forward(request,response) -- 请求转发到指定URL
1：二者区别：
response.sendRedirect(url)跳转到指定的URL地址，产生一个新的request，所以要传递参数只有在url后加参数，如：
url?id=1.
request.getRequestDispatcher(url).forward(request,response) 是直接将请求转发到指定URL，所以该请求能够直接获得上一个请求的数据，也就是说采用请求转发，request对象始终存在，不会重新创建。而 sendRedirect()会新建request对象，所以上一个request中的数据会丢失。
更具体来说就是这样的：
redirect 会首先发一个response给浏览器, 然后浏览器收到这个response后再发一个request给服务器, 然后服务器发新的response给浏览器. 这时页面收到的request是一个新从浏览器发来的.
forward 发生在服务器内部, 在浏览器完全不知情的情况下发给了浏览器另外一个页面的response. 这时页面收到的request不是从浏览器直接发来了,可能己经用request.setAttribute在request里放了数据.在转到的页面可直接用request.getAttribute获得数据。
//ZhuceServlet.java
-
package com.servlet;
-
-
import java.io.IOException;
-
import java.io.PrintWriter;
-
-
import javax.servlet.ServletException;
-
import javax.servlet.http.HttpServlet;
-
import javax.servlet.http.HttpServletRequest;
-
import javax.servlet.http.HttpServletResponse;
-
import com.dao.UserDao;
-
import com.dao.UserDaoImpl;
-
import com.entity.User;
-
-
public
class ZhuceServlet extends HttpServlet {
-
public void doGet(HttpServletRequest request, HttpServletResponse response)
-
throws ServletException, IOException {
-
doPost(request, response);
-
}
-
public void doPost(HttpServletRequest request, HttpServletResponse response)
-
throws ServletException, IOException {
-
-
String name = request.getParameter(
"name");
//获取jsp页面传过来的参数
-
String pwd = request.getParameter(
"pwd");
-
String sex = request.getParameter(
"sex");
-
String home = request.getParameter(
"home");
-
String info = request.getParameter(
"info");
-
-
User user =
new User();
//实例化一个对象，组装属性
-
user.setName(name);
-
user.setPwd(pwd);
-
user.setSex(sex);
-
user.setHome(home);
-
user.setInfo(info);
-
-
UserDao ud =
new UserDaoImpl();
-
-
if(ud.register(user)){
-
request.setAttribute(
"username", name);
//向request域中放置参数
-
//request.setAttribute("xiaoxi", "注册成功");
-
request.getRequestDispatcher(
"/denglu.jsp").forward(request, response);
//转发到登录页面
-
}
else{
-
-
response.sendRedirect(
"index.jsp");
//重定向到首页
-
}
-
}
-
}
//Searchall.java
-
package com.servlet;
-
-
import java.io.IOException;
-
import java.io.PrintWriter;
-
import java.util.List;
-
-
import javax.servlet.ServletException;
-
import javax.servlet.http.HttpServlet;
-
import javax.servlet.http.HttpServletRequest;
-
import javax.servlet.http.HttpServletResponse;
-
-
import com.dao.UserDao;
-
import com.dao.UserDaoImpl;
-
import com.entity.User;
-
-
public
class Searchall extends HttpServlet {
-
public void doGet(HttpServletRequest request, HttpServletResponse response)
-
throws ServletException, IOException {
-
doPost(request, response);
-
}
-
public void doPost(HttpServletRequest request, HttpServletResponse response)
-
throws ServletException, IOException {
-
-
UserDao ud =
new UserDaoImpl();
-
List<User> userAll = ud.getUserAll();
-
request.setAttribute(
"userAll", userAll);
-
request.getRequestDispatcher(
"/showall.jsp").forward(request, response);
-
}
-
}
//DeleteServlet.java
-
package com.servlet;
-
-
import java.io.IOException;
-
import java.io.PrintWriter;
-
-
import javax.servlet.ServletException;
-
import javax.servlet.http.HttpServlet;
-
import javax.servlet.http.HttpServletRequest;
-
import javax.servlet.http.HttpServletResponse;
-
-
import com.dao.UserDao;
-
import com.dao.UserDaoImpl;
-
-
public
class DeleteServlet extends HttpServlet {
-
public void doGet(HttpServletRequest request, HttpServletResponse response)
-
throws ServletException, IOException {
-
doPost(request, response);
-
}
-
public void doPost(HttpServletRequest request, HttpServletResponse response)
-
throws ServletException, IOException {
-
-
String id = request.getParameter(
"id");
-
int userId = Integer.parseInt(id);
-
-
UserDao ud =
new UserDaoImpl();
-
-
if(ud.delete(userId)){
-
request.setAttribute(
"xiaoxi",
"删除成功");
-
request.getRequestDispatcher(
"/Searchall").forward(request, response);
-
}
else{
-
response.sendRedirect(
"index.jsp");
-
}
-
}
-
-
}
//UpdateServlet.java
-
package com.servlet;
-
-
import java.io.IOException;
-
import java.io.PrintWriter;
-
-
import javax.servlet.ServletException;
-
import javax.servlet.http.HttpServlet;
-
import javax.servlet.http.HttpServletRequest;
-
import javax.servlet.http.HttpServletResponse;
-
-
import com.dao.UserDao;
-
import com.dao.UserDaoImpl;
-
import com.entity.User;
-
-
public
class UpdateServlet extends HttpServlet {
-
-
public void doGet(HttpServletRequest request, HttpServletResponse response)
-
throws ServletException, IOException {
-
doPost(request, response);
-
}
-
public void doPost(HttpServletRequest request, HttpServletResponse response)
-
throws ServletException, IOException {
-
-
String id = request.getParameter(
"id");
-
int userId = Integer.parseInt(id);
-
-
String name = request.getParameter(
"name");
-
String pwd = request.getParameter(
"pwd");
-
String sex = request.getParameter(
"sex");
-
String home = request.getParameter(
"home");
-
String info = request.getParameter(
"info");
-
-
System.out.println(
"------------------------------------"+userId);
-
-
UserDao ud =
new UserDaoImpl();
-
-
if(ud.update(userId, name, pwd, sex, home, info)){
-
request.setAttribute(
"xiaoxi",
"更新成功");
-
request.getRequestDispatcher(
"/Searchall").forward(request, response);
-
}
else{
-
response.sendRedirect(
"index.jsp");
-
}
-
}
-
}
-
success.jsp 成功页面
-
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
-
<%
-
String path = request.getContextPath();
-
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
-
%>
-
-
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-
<html>
-
<head>
-
<title>My JSP 'success.jsp' starting page
</title>
-
</head>
-
<body>
-
${xiaoxi}
<br>
-
<a href="Searchall">查看所有用户
</a>
-
</body>
-
</html>
<%! %>里声明的变量和方法都是作为类的属性和方法存在的，<% %>里不能声明方法
而<% %>里声明的变量则是作为_jspService这个方法的内部属性
在ASP.NET中的<%=%>代码块指明了开发人员想要呈现的值（例如<%=”hello”%>就是呈现hello）。<%%>代码块则指出开发人员想要执行的代码，任何在其中呈现的输出都必须是显式地完成（例如<%Response.Write(“hello”);%>）。
所以说二者的区别就是<%=%>只是呈现某个值（比如说字符串呀），或者说用来和某个变量绑定；而<%%>则是执行一段代码（记住代码后要加“；”号），因为是被执行的代码嘛，“；”号是肯定要的。
<a> 标签的 href 属性用于指定超链接目标的 URL。
href 属性的值可以是任何有效文档的相对或绝对 URL，包括片段标识符和 JavaScript 代码段。如果用户选择了 <a> 标签中的内容，那么浏览器会尝试检索并显示 href 属性指定的 URL 所表示的文档，或者执行 JavaScript 表达式、方法和函数的列表。
//index.jsp
-
<%@ page language=
"java"
import=
"java.util.*" pageEncoding=
"UTF-8"%>
-
<%
-
//web项目的根路径，就是webContent
-
String path = request.getContextPath();
-
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
-
%>//) 返回当前链接使用的协议；比如，一般应用返回http;SSL返回https;
-
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-
<html>
-
<head>
-
<title>My JSP 'index.jsp' starting page
</title>
-
</head>
-
<body>
-
<h1>失敗
</h1>
-
</body>
-
</html>
-
这个语句是用来拼装当前网页的相对路径的。
<base href="...">是用来表明当前页面的相对路径所使用的根路径的。
比如，页面内部有一个连接，完整的路径应该是 http://localhost:80/myblog/authen/login.do
其中http://server/是服务器的基本路径，myblog是当前应用程序的名字，那么，我的根路径应该是那么http://localhost:80/myblog/。
有了这个 <base ... >以后，我的页面内容的连接，我不想写全路径，我只要写 authen/login.do就可以了。服务器会自动把 <base ...>指定的路径和页面内的相对路径拼装起来，组成完整路径。
如果没有这个 <base...>，那么我页面的连链接就必须写全路径，否则服务器会找不到。
在使用表单提交数据到服务器的时候有两张方式可共选择，一个是post一个是get。可在<form>中的method属性中指定提交的方式。如：<form action="inputForm"method="get">，如果不指定method属性，则会默认该属性为”get”方式。
-
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
-
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-
<html>
-
<head>
-
<title>登录注册页面
</title>
-
</head>
-
<body >
-
<form action="DengluServlet" method="post" style="padding-top:-700px;">
-
用户名：
<input type="text" name="name"value="">
<br>
<br>
-
密码：
<input type="password" name="pwd"value="">
<br>
<br>
-
<input type="submit"value="登录"name="denglu">
<input type="reset"value="重置">
<br>
-
</form>
-
<form action="zhuce.jsp">
-
<input type="submit"value="新用户注册">
-
</form>
-
-
</body>
-
</html>
showall.jsp 展现所有用户页面
-
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
-
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
-
<%
-
String path = request.getContextPath();
-
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
-
%>
-
-
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-
<html>
-
<head>
-
<base href="<%=basePath%>">
-
<title>所有用户页面
</title>
-
</head>
-
-
<body>
-
<h1>${xiaoxi}
</h1>
-
<table width="600" border="1" cellpadding="0" >
-
<tr>
-
<th>ID
</th>
-
<th>姓名
</th>
-
<th>性别
</th>
-
<th>密码
</th>
-
<th>家乡
</th>
-
<th>备注
</th>
-
<th>操作
</th>
-
</tr>
-
<c:forEach var="U" items="${userAll}" >
-
<form action="UpdateServlet" method="post">
-
<tr>
-
<td>
<input type="text" value="${U.id}" name="id" >
</td>
-
<td>
<input type="text" value="${U.name}" name="name">
</td>
-
<td>
<input type="text" value="${U.sex}" name="sex">
</td>
-
<td>
<input type="text" value="${U.pwd}" name="pwd">
</td>
-
<td>
<input type="text" value="${U.home}" name="home">
</td>
-
<td>
<input type="text" value="${U.info}" name="info">
</td>
-
<td>
<a href="DeleteServlet?id=${U.id}">删除
</a>
<input type="submit" value="更新"/>
</td>
-
</tr>
-
</form>
-
</c:forEach>
-
</table>
-
</body>
-
</html>
zhuce.jsp 用户注册页面
-
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
-
<%
-
String path = request.getContextPath();
-
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
-
%>
-
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-
<html>
-
<head>
-
<title>My JSP 'BB.jsp' starting page
</title>
-
</head>
-
<body >
-
<form action="ZhuceServlet"method="post" style="padding-top:-700px;">
-
输入用户名:
<input name="name" type="text">
<br>
<br>
-
输入密码:
<input name="pwd" type="password">
<br>
<br>
-
选择性别:
<input type="radio"name="sex"value="男"checked>男
-
<input type="radio"name="sex"value="女">女
<br>
<br>
-
选择家乡:
-
<select name="home">
-
<option value="上海">上海
</option>
-
<option value="北京" selected>北京
</option>
-
<option value="纽约">纽约
</option>
-
</select>
<br>
-
填写个人信息:
<br>
-
<textarea name="info" row="5"cols="30">
</textarea>
<br>
-
<input type="reset"value="重置">
<input type="submit"value="注册">
-
</form>
-
</body>
-
</html>
-
<?xml version="1.0" encoding="UTF-8"?>
-
<web-app version="2.5"
-
xmlns=
"http://java.sun.com/xml/ns/javaee"
-
xmlns:xsi=
"http://www.w3.org/2001/XMLSchema-instance"
-
xsi:schemaLocation=
"http://java.sun.com/xml/ns/javaee
-
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
-
<display-name>
</display-name>
-
-
<filter>
<!--过滤器配置-->
-
<filter-name>EncodingFilter
</filter-name>
-
<filter-class>com.filter.EncodingFilter
</filter-class>
-
</filter>
-
<filter-mapping>
-
<filter-name>EncodingFilter
</filter-name>
-
<url-pattern>/*
</url-pattern>
-
</filter-mapping>
-
-
-
-
<servlet>
<!--servlet类路径配置-->
-
<servlet-name>DengluServlet
</servlet-name>
-
<servlet-class>com.servlet.DengluServlet
</servlet-class>
-
</servlet>
-
<servlet>
-
<servlet-name>ZhuceServlet
</servlet-name>
-
<servlet-class>com.servlet.ZhuceServlet
</servlet-class>
-
</servlet>
-
<servlet>
-
<servlet-name>Searchall
</servlet-name>
-
<servlet-class>com.servlet.Searchall
</servlet-class>
-
</servlet>
-
<servlet>
-
<servlet-name>DeleteServlet
</servlet-name>
-
<servlet-class>com.servlet.DeleteServlet
</servlet-class>
-
</servlet>
-
<servlet>
-
<servlet-name>UpdateServlet
</servlet-name>
-
<servlet-class>com.servlet.UpdateServlet
</servlet-class>
-
</servlet>
-
-
-
-
<servlet-mapping>
<!--servlet类映射配置-->
-
<servlet-name>DengluServlet
</servlet-name>
-
<url-pattern>/DengluServlet
</url-pattern>
-
</servlet-mapping>
-
<servlet-mapping>
-
<servlet-name>ZhuceServlet
</servlet-name>
-
<url-pattern>/ZhuceServlet
</url-pattern>
-
</servlet-mapping>
-
<servlet-mapping>
-
<servlet-name>Searchall
</servlet-name>
-
<url-pattern>/Searchall
</url-pattern>
-
</servlet-mapping>
-
<servlet-mapping>
-
<servlet-name>DeleteServlet
</servlet-name>
-
<url-pattern>/DeleteServlet
</url-pattern>
-
</servlet-mapping>
-
<servlet-mapping>
-
<servlet-name>UpdateServlet
</servlet-name>
-
<url-pattern>/UpdateServlet
</url-pattern>
-
</servlet-mapping>
-
-
-
-
<welcome-file-list>
<!--默认首页地址-->
-
<welcome-file>denglu.jsp
</welcome-file>
-
</welcome-file-list>
-
</web-app>
web.xml
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