jsp增删改查2.docx

jsp增删改查2.docx

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jsp增删改查2

Webroot文件夹下：

Index.Jsp

<%@pagelanguage="java"import="java.util.*"pageEncoding="utf-8"%>

DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN">

<%=request.getAttribute（"msg"）!

=null?

request.getAttribute（"msg"）:

""%>

请输入登陆信息

姓名：

=null?

request.getAttribute（"username_reg"）:

""%>"/>

密码

我要注册

login_pro.jsp

<%@pagelanguage="java"contentType="text/html;charset=utf-8"pageEncoding="utf-8"%>

<%@pageimport="com.king.bean.UserInfo"%>

<%@pageimport="com.king.dao.UserDao"%>

<%@pageimport="com.king.dao.UserDaoImpl"%>

<%

Stringusername=request.getParameter（"username"）;

Stringpassword=request.getParameter（"password"）;

request.setAttribute（"username_reg",newString（username.getBytes（"iso-8859-1"）,"utf-8"））;

if（username==null||username.trim（）.equals（""））{

request.setAttribute（"msg","用户名不能为空！

"）;

request.getRequestDispatcher（"index.jsp"）.forward（request,response）;

}elseif（password==null||password.trim（）.equals（""））{

request.setAttribute（"msg","密码不能为空！

"）;

request.getRequestDispatcher（"index.jsp"）.forward（request,response）;

}else{

UserInfou=newUserInfo（）;

u.setUsername（newString（username.getBytes（"iso-8859-1"）,"utf-8"））;

u.setPassword（newString（password.getBytes（"iso-8859-1"）,"utf-8"））;

UserDaodao=newUserDaoImpl（）;

booleanflag=dao.loginUser（u）;

if（flag==true）{

request.setAttribute（"username",u.getUsername（））;

request.getRequestDispatcher（"userList_pro.jsp"）.forward（request,response）;

}else{

request.setAttribute（"msg","登陆信息有误，请再次登陆或注册！

"）;

request.getRequestDispatcher（"index.jsp"）.forward（request,response）;

}

}

%>

<%@pagelanguage="java"contentType="text/html;charset=utf-8"pageEncoding="utf-8"%>

<%@pageimport="com.king.bean.UserInfo"%>

<%@pageimport="com.king.dao.UserDao"%>

<%@pageimport="com.king.dao.UserDaoImpl"%>

<%

Stringusername=request.getParameter（"username"）;

Stringpassword=request.getParameter（"password"）;

request.setAttribute（"username_reg",newString（username.getBytes（"iso-8859-1"）,"utf-8"））;

if（username==null||username.trim（）.equals（""））{

request.setAttribute（"msg","用户名不能为空！

"）;

request.getRequestDispatcher（"index.jsp"）.forward（request,response）;

}elseif（password==null||password.trim（）.equals（""））{

request.setAttribute（"msg","密码不能为空！

"）;

request.getRequestDispatcher（"index.jsp"）.forward（request,response）;

}else{

UserInfou=newUserInfo（）;

u.setUsername（newString（username.getBytes（"iso-8859-1"）,"utf-8"））;

u.setPassword（newString（password.getBytes（"iso-8859-1"）,"utf-8"））;

UserDaodao=newUserDaoImpl（）;

booleanflag=dao.loginUser（u）;

if（flag==true）{

request.setAttribute（"username",u.getUsername（））;

request.getRequestDispatcher（"userList_pro.jsp"）.forward（request,response）;

}else{

request.setAttribute（"msg","登陆信息有误，请再次登陆或注册！

"）;

request.getRequestDispatcher（"index.jsp"）.forward（request,response）;

}

}

register.jsp（注册）

<%@pagelanguage="java"import="java.util.*"pageEncoding="utf-8"%>

DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN">

<%=request.getAttribute（"msg"）!

=null?

request.getAttribute（"msg"）:

""%>

请输入注册信息

姓名：

=null?

request.getAttribute（"username_reg"）:

""%>"/>

密码

register_pro.jsp（注册处理）

<%@pagelanguage="java"contentType="text/html;charset=utf-8"pageEncoding="utf-8"%>

<%@pageimport="com.king.bean.UserInfo"%>

<%@pageimport="com.king.dao.UserDao"%>

<%@pageimport="com.king.dao.UserDaoImpl"%>

<%

Stringusername=request.getParameter（"username"）;

Stringpassword=request.getParameter（"password"）;

request.setAttribute（"username_reg",newString（username.getBytes（"iso-8859-1"）,"utf-8"））;

if（username==null||username.trim（）.equals（""））{

request.setAttribute（"msg","用户名不能为空！

"）;

request.getRequestDispatcher（"register.jsp"）.forward（request,response）;

}elseif（password==null||password.trim（）.equals（""））{

request.setAttribute（"msg","密码不能为空！

"）;

request.getRequestDispatcher（"register.jsp"）.forward（request,response）;

}else{

UserInfou=newUserInfo（）;

u.setUsername（newString（username.getBytes（"iso-8859-1"）,"utf-8"））;

u.setPassword（newString（password.getBytes（"iso-8859-1"）,"utf-8"））;

UserDaodao=newUserDaoImpl（）;

booleanflag=dao.saveUser（u）;

if（flag==true）{

request.getSession（）.setAttribute（"username",u.getUsername（））;

request.getRequestDispatcher（"userList_pro.jsp"）.forward（request,response）;

}else{

request.getRequestDispatcher（"register.jsp"）.forward（request,response）;

}

}

%>

%>

查看：

user_view.jsp

<%@pagelanguage="java"contentType="text/html;charset=utf-8"pageEncoding="utf-8"%>

<%@pageimport="com.king.bean.UserInfo"%>

DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN">

<%UserInfou=（UserInfo）request.getSession（）.getAttribute（"userInfo_update"）;%>

collapse;">

用户信息用户

ID：

<%=u.getId（）%>

用户名：

<%=u.getUsername（）%>

密码:

<%=u.getPassword（）%>

<返回列表页

userList_pro.jsp列表处理

<%@pagelanguage="java"import="java.util.*"pageEncoding="utf-8"%>

<%@pageimport="com.king.dao.UserDao"%>

<%@pageimport="com.king.dao.UserDaoImpl"%>

<%

UserDaodao=newUserDaoImpl（）;

ListuserList=dao.fecthUserList（）;

if（userList!

=null&&userList.size（）>0）{

request.setAttribute（"userList",userList）;

request.getRequestDispatcher（"userList.jsp"）.forward（request,response）;

}else{

request.setAttribute（"msg","目前无用户信息，请注册！

"）;

request.getRequestDispatcher（"register.jsp"）.forward（request,response）;

}

%>