最近写了一个用户验证密码的程序,其功能如下:
输入用户名和密码,然后提交,只有在密码位数大于8位切有数字的时候,才输出Thank you Your password meets the security policy 否则输出Sorry Your password does not meet the security policy 可是我的不知道怎么了,两个竟然同时输出了!各位大虾帮帮忙啊!谢啦!login.html文件如下:
<html>
<head><title>A Siple Login Page</title></head>
<body>
<p>Please Login:
<form action=login.jsp method=post>
<p>User Name:<input type=text name=usernameField>
<p>Password:<input type=text name=passwordField>
<p><input type=SUBMIT value=Submit>
</form>
</body>
</html>
login.jsp文件如下:
<html>
<head>
<title>A Simple Jsp That Verifies Password Policy</title>
</head>
<body>
<%! final static int MIN_PSWD_LEN=8;
static boolean verifyPasswordLength(String password){
if(password.length()<MIN_PSWD_LEN)return false;
return true;
}static boolean verifyPasswordHasDigit(String password){
for(int i=0;i<password.length();i++)
if(Character.isDigit(password.charAt(i))) return true;
return false;
}static boolean verifyPasswordPolicy(String password){
if(verifyPasswordLength(password)&&verifyPasswordHasDigit(password))
return true;
else
return false;
}
%><%String password=request.getParameter(passwordField);
if(verifyPasswordPolicy(password)){%>
<p>Thank you
<p>Your password meets the security policy
<%}else{%>
<p>Sorry
<p>Your password does not meet the security policy
<p><a href="login.html">Please Try Again</a>
<%}%>
</body>
</html>
输入用户名和密码,然后提交,只有在密码位数大于8位切有数字的时候,才输出Thank you Your password meets the security policy 否则输出Sorry Your password does not meet the security policy 可是我的不知道怎么了,两个竟然同时输出了!各位大虾帮帮忙啊!谢啦!login.html文件如下:
<html>
<head><title>A Siple Login Page</title></head>
<body>
<p>Please Login:
<form action=login.jsp method=post>
<p>User Name:<input type=text name=usernameField>
<p>Password:<input type=text name=passwordField>
<p><input type=SUBMIT value=Submit>
</form>
</body>
</html>
login.jsp文件如下:
<html>
<head>
<title>A Simple Jsp That Verifies Password Policy</title>
</head>
<body>
<%! final static int MIN_PSWD_LEN=8;
static boolean verifyPasswordLength(String password){
if(password.length()<MIN_PSWD_LEN)return false;
return true;
}static boolean verifyPasswordHasDigit(String password){
for(int i=0;i<password.length();i++)
if(Character.isDigit(password.charAt(i))) return true;
return false;
}static boolean verifyPasswordPolicy(String password){
if(verifyPasswordLength(password)&&verifyPasswordHasDigit(password))
return true;
else
return false;
}
%><%String password=request.getParameter(passwordField);
if(verifyPasswordPolicy(password)){%>
<p>Thank you
<p>Your password meets the security policy
<%}else{%>
<p>Sorry
<p>Your password does not meet the security policy
<p><a href="login.html">Please Try Again</a>
<%}%>
</body>
</html>
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……<% int MIN_PSWD_LEN=8;
boolean verifyPasswordLength(String password){
if(password.length()<MIN_PSWD_LEN)return false;
return true;
} boolean verifyPasswordHasDigit(String password){
for(int i=0;i<password.length();i++)
if(Character.isDigit(password.charAt(i))) return true;////很容易出错
return false;
}static boolean verifyPasswordPolicy(String password){
if(verifyPasswordLength(password)&&verifyPasswordHasDigit(password))
return true;
else
return false;
}
%><%String password=request.getParameter(passwordField);
if(verifyPasswordPolicy(password)){%>
<p>Thank you<%}else{%>
<p>Sorry<%}%>
应该没问题了 你再试试 不是大问题
Syntax error, insert "}" to complete Block
12: boolean verifyPasswordHasDigit(String password){
13: for(int i=0;i<password.length();i++){
14: if(Character.isDigit(password.charAt(i))) return true;
15: else return false;
16: }
17:
18: boolean verifyPasswordPolicy(String password){
请问你是怎么试的?我是用Eclipse建立了一个html文件和一个jsp文件,然后双击html文件啊。
在login.jsp 中看输出提示,我只看到一种情况,没有发现你说的两种情况一起呈现
引用 6 楼 fatlism 的回复:org.apache.jasper.JasperException: java.lang.NullPointerException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:532)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:426)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
上面三个jar包是否都配置啦
我把html文件改为.jsp就好了
String password=request.getParameter("passwordField")
引号加了吗???怀疑是否能执行