查看jsp變數

 public int CheckParam(HttpServletRequest request, HttpServletResponse response) throws IOException{
  PrintWriter out = response.getWriter();
  Enumeration e=request.getParameterNames();
  while(e.hasMoreElements()){
   String parameterName=(String)e.nextElement();
   String parameterValue=(String)request.getParameter(parameterName);
   if((parameterValue==null) || (parameterValue.trim().length()<1)){
    out.println(parameterName+"不可為空<br>");
    return -1;
   }
  }     
  return 0;
 }
 
 public void PrintAllParameters(HttpServletRequest request, HttpServletResponse response) throws IOException{
  PrintWriter out = response.getWriter();
  Enumeration e=request.getParameterNames();
  while(e.hasMoreElements()){
  String parameterName=(String)e.nextElement();
  String parameterValue=(String)request.getParameter(parameterName);
/*  byte b[] = parameterValue.getBytes("ISO-8859-1");  
  parameterValue = new String(b);
*/  out.print("參數名稱："+parameterName+"<BR>");
  out.print("參數內容："+parameterValue+"<BR>");
  out.print("----------------------------------------------------------------<br>");
  }   
 }

 

 

<%
 public void PrintAllParameters(HttpServletRequest request, HttpServletResponse response) throws IOException{
  PrintWriter out = response.getWriter();
  Enumeration e=request.getParameterNames();
  while(e.hasMoreElements()){
  String parameterName=(String)e.nextElement();
  String parameterValue=(String)request.getParameter(parameterName);
  out.print("參數名稱："+parameterName+"<BR>");
  out.print("參數內容："+parameterValue+"<BR>");
  out.print("----------------------------------------------------------------<br>");
  }   
 }
%>

<%
Enumeration e=request.getAttributeNames();
while(e.hasMoreElements()){
String attributeName=(String)e.nextElement();
String attributeValue=(String)request.getAttribute(attributeName);
out.print("變數名稱："+attributeName);
out.print("變數內容："+attributeValue+"<BR>");
}
%>

String strs = request.getParameter("yourstrs");
byte b[] = strs.getBytes("ISO-8859-1");
strs = new String(b);