首页 / SERVLET / Servlet作业--实现注册和登录

Servlet作业--实现注册和登录

内容导读

互联网集市收集整理的这篇技术教程文章主要介绍了Servlet作业--实现注册和登录，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含5089字，纯文字阅读大概需要8分钟。

内容图文

1.注册页面 zhuce.html

            <!
            DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"
            >
            <
            html
            >
            <
            head
            >
            <
            meta 
            http-equiv
            ="Content-Type"
             content
            ="text/html; charset=UTF-8"
            >
            <
            title
            >注册新用户</title><script type="text/javascript">function check()
{    
    if(zhuce.userid.value ==null|| zhuce.userid.value.trim().length ==0)
        {
        alert("请输入用户代码")
        returnfalse;
        }
    if(zhuce.username.value ==null|| zhuce.username.value.trim().length ==0)
        {
        alert("请输入用户名称");
        returnfalse;
        }
    if(zhuce.password.value ==null|| zhuce.password.value.trim().length ==0)
        {
        alert("请输入密码");
        returnfalse;
        }
    if(zhuce.password2.value ==null|| zhuce.password2.value.trim().length ==0)
        {
        alert("请再次密码");
        returnfalse;
        }
    if(zhuce.password2.value != zhuce.password.value)
        {
        alert("两次输入的密码不一致");
        returnfalse;
        }
    returntrue;
}


</script></head><body><form id="zhuce" action="zhuce" onSubmit="return check()">

用户代码:<input id="userid" type="text" name="userid" width=30 /><br><br>
用户名称:<input id="username" type="text" name="username" width=30 /><br><br>
输入密码:<input id="password" type="password" name="password" width=30 /><br><br>
确认密码:<input id="password2" type="password" name="password2" width=30 /><br><br><input type="submit" value="提交"/></form></body></html>

2.注册处理 zhuce.java

            package
             com.hanqi;


            import
             java.io.IOException;


            import
             javax.servlet.ServletContext;

            import
             javax.servlet.ServletException;

            import
             javax.servlet.ServletRequest;

            import
             javax.servlet.http.HttpServlet;

            import
             javax.servlet.http.HttpServletRequest;

            import
             javax.servlet.http.HttpServletResponse;

            import
             org.apache.catalina.User;

            import com.hanqi.*;

/**
 * Servlet implementation class zhuce
 */
@SuppressWarnings("unused")
publicclass zhuce extends HttpServlet {
    privatestaticfinallong serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */public zhuce() {
        super();
        // TODO Auto-generated constructor stub    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */protectedvoid doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        
　　　　//使提示页面显示中文
        response.setCharacterEncoding("GBK");
        
        String un = new String(request.getParameter("username").getBytes("ISO-8859-1"),"UTF-8");

        String ui = request.getParameter("userid");

        String pw = request.getParameter("password");

        String pw2 = request.getParameter("password2");
        
        if(ui == null || ui.trim().length() == 0)
        {
            response.getWriter().append("用户代码不能为空");
　　　　　　　//自动跳转到注册页面
            response.setHeader("refresh", "3;URL=zhuce.html");
        }
        elseif(un == null || un.trim().length() == 0)
        {
            response.getWriter().append("用户名不能为空");
            response.setHeader("refresh", "3;URL=zhuce.html");
        }
        elseif(pw == null || pw.trim().length() == 0)
        {
            response.getWriter().append("密码不能为空");
            response.setHeader("refresh", "3;URL=zhuce.html");
        }
        else
        {

            
            ServletContext application = this.getServletContext();
            Object obj = application.getAttribute(ui);
    
            if(obj != null)
            {
                response.getWriter().append("用户代码已存在");
                response.setHeader("refresh", "3;URL=zhuce.html");
            }
            else
            {
                
                //以对象的形式保存用户信息
                //实体类,对用户信息的封装                
                user zc = new user();
                
                zc.setuserID(ui);
                zc.setuserName(un);
                zc.setpassword(pw);
                
            
                response.getWriter().append("注册成功");
            
                response.setHeader("refresh", "3;URL=index.html");
            }
        }

    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */protectedvoid doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub        doGet(request, response);
    }

}

3.自定义存储用户注册信息的类: user.java

            package
             com.hanqi;


            public
            class
             user {

　　//用户代码
    
            private
             String ui;
    
    
            public
             String getuserID()
    {
        
            return
             ui;
    }
    
    
            public
            void
             setuserID(String ui)
    {
        
            this.ui = ui;
    }

    //用户名称private String un;
    
    public String getuserName() {
        return un;
    }

    publicvoid setuserName(String un) {
        this.un = un;
    }
    
    
    //密码private String pw;
    
    public String getpassword() {
        return pw;
    }

    publicvoid setpassword(String pw) {
        this.pw = pw;
    }





}

4.登录页面 index.html

            <!
            DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"
            >
            <
            html
            >
            <
            head
            >
            <
            meta 
            http-equiv
            ="Content-Type"
             content
            ="text/html; charset=UTF-8"
            >
            <
            title
            >请登录</title><script type="text/javascript">function check()
{
    var uid = document.getElementById("userid");
    
    if(uid.value =="")
        {
        alert("用户代码不能为空")
        returnfalse;
        }
    if(login.password.value =="")
        {
        alert("密码不能为空");
        returnfalse;
        }
    returntrue;
}


</script></head><body><form id="login" method="post" action="CheckLogin" onSubmit="return check();">
用户代码:
<input id="userid" name="userid" type="text" width="30"/><a href="P142-3.1.jsp">注册新用户</a><br>
登录密码:
<input id="password" name="password" type="password" width="30"/><br><input type="submit" value="登录"/></form></body></html>

5.登录处理页面 CheckLogin.java

原文：http://www.cnblogs.com/shadowduke/p/5014897.html

内容总结

以上是互联网集市为您收集整理的Servlet作业--实现注册和登录全部内容，希望文章能够帮你解决Servlet作业--实现注册和登录所遇到的程序开发问题。如果觉得互联网集市技术教程内容还不错，欢迎将互联网集市网站推荐给程序员好友。

内容备注

版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容，请发送邮件至 gblab@vip.qq.com 举报，一经查实，本站将立刻删除。

内容手机端

扫描二维码推送至手机访问。

本文链接：https://qyyshop.com/info/1283458.html

来源：【匿名】

首页 / SERVLET / Servlet作业--实现注册和登录

Servlet作业--实现注册和登录

内容导读

内容图文

内容总结

内容备注

内容手机端

SERVLET - 相关标签

SERVLET - 最新教程

SERVLET - 最热教程