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我想要一個servlet從html表單打印參數,但在servlet中請求沒有參數。Servlet POST參數null
<form method="post" action="LoginServlet" >
<input type="text" name="username" id="username" /><br/>
<input type="text" name="password" /><br/>
<input type="submit" />
</form>
和servlet的的doPost():
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println("POST");
HttpSession session = request.getSession();
String redirectUrl;
Enumeration atributes = request.getAttributeNames();
while (atributes.hasMoreElements()) {
System.out.println((String)atributes.nextElement()+ ".");
}
String user = (String) request.getAttribute("username");
String pass = (String) request.getAttribute("password");
System.out.println("user:" + (String) request.getAttribute("username"));
}
所以也沒有任何輸出參數和用戶名參數爲空。
我認爲這是一個不恰當的問題。沒有足夠的聲望來投票。 – 2014-09-07 07:28:18