login.java

leaveBaord mvc jsp+javabean+servlet

package com.db;

import java.util.*;

public class Login {
    private String message;
    public Login(){
    }
    //判断是否登录成功（这样登录方式不安全）
    public boolean login(String name,String password){
        String sql = "select password from usertable where username='"+name+"' and password='"+password+"'";
        List list = DataSource.queryData(sql);
        return list!=null&&list.size()>0;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
}