JSP中if语句只执行一种情况

kadrqz88 2016-10-12 11:15:16

<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!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>Insert title here</title>
</head>
<body bgcolor=pink style="font-family:arial;color:blue;font-size:20px;" >

请核对一下信息是否正确，正确的请按确认，需要修改的请按返回
<%
request.setCharacterEncoding("utf-8");
String yourName=request.getParameter("name");
String yourNumber=request.getParameter("num");

if(yourNumber!="888888"||yourNumber!="000000"){out.print("<script>alert('密码不正确');window.location.href('login.jsp');</script>");}//就是这里，无论输入什么密码（包括888888和000000）都只出现这个提示框，后面的都不执行，这是怎么回事？
else
if(yourNumber=="888888")//其实这里好像也有些问题，就算把前面那个IF去掉，输入888888后，无法出现其他信息，例如姓名，性别等，这又是怎么回事？
{String yourSex=request.getParameter("R");
String yourIdentify="老师";
String yourBirthyear=request.getParameter("year");
String yourBirthmonth=request.getParameter("month");
String competitionName[]=request.getParameterValues("com");
session.setAttribute("Uname",yourName);
session.setAttribute("ID",yourIdentify);
session.setAttribute("Name",competitionName);

out.println(" 您的姓名："+yourName+"");
out.println(" 您的性别："+yourSex+"");

out.println(" 您的出生年份："+yourBirthyear+"");
out.println(" 您的出生月份："+yourBirthmonth+"");
out.println(" 您所报名的竞赛项目为：");
if(competitionName==null){
out.print("一个都不参加");
}
else{for(int k=0;k<competitionName.length;k++){
out.println(""+competitionName[k]);}
}
}
else
if(yourNumber=="000000")
{String yourSex=request.getParameter("R");
String yourIdentify="学生";
String yourBirthyear=request.getParameter("year");
String yourBirthmonth=request.getParameter("month");
String competitionName[]=request.getParameterValues("com");
session.setAttribute("Uname",yourName);
session.setAttribute("ID",yourIdentify);
session.setAttribute("Name",competitionName);

out.println(" 您的姓名："+yourName+"");
out.println(" 您的性别："+yourSex+"");

out.println(" 您的出生年份："+yourBirthyear+"");
out.println(" 您的出生月份："+yourBirthmonth+"");
out.println(" 您所报名的竞赛项目为：");
if(competitionName==null){
out.print("一个都不参加");
}
else{for(int k=0;k<competitionName.length;k++){
out.println(""+competitionName[k]);}
}
}

%>

<a href="main.jsp">确认</a>
<a href="login.jsp">返回</a>

</body>
</html>
求大神解答！

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