【jsp】データベースを呼び出してユーザログイン機能を実現する(ログインインタフェースはテンプレートを使用する)
login.jsp
characterencodingfilter.java
web.xml
rendshop
$(function(){
$('.loginbox').css({'position':'absolute','left':($(window).width()-692)/2});
$(window).resize(function(){
$('.loginbox').css({'position':'absolute','left':($(window).width()-692)/2});
})
});
loginservlet.java
package com.zzxtit.shop.sys.controller;
import java.io.IOException;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import com.zzxtit.common.user.UserInfor;
import com.zzxtit.common.util.DBUtil;
@WebServlet("/dologin.action")
public class LoginServlet extends HttpServlet{
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request,response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String userName = request.getParameter("userName");
System.out.println(userName);
String passwd = request.getParameter("passwd");
System.out.println(passwd);
QueryRunner qr = new QueryRunner(DBUtil.getDS());
String sql = "select * from user_infor where user_name = ? and password = ?";
try {
if(qr.query(sql, new BeanHandler(UserInfor.class),userName,passwd) != null) {
response.sendRedirect("success.jsp");
}else {
response.sendRedirect("Failure.jsp");
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
characterencodingfilter.java
package com.zzxtit.common.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;
public class CharacterEncodingFilter implements Filter{
private static String encoding = "utf-8";
@Override
public void destroy() {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain)
throws IOException, ServletException {
request.setCharacterEncoding(encoding);
System.out.println("asdfasgdawer");
filterChain.doFilter(request, response);
}
@Override
public void init(FilterConfig config) throws ServletException {
if(config.getInitParameter("encoding") != null) {
encoding = config.getInitParameter("encoding");
}
}
}
web.xml
5
index.jsp
login.jsp