[Java] 列出 HttpServletRequest header

1. Enumeration<String> names = request.getHeaderNames(); 
2.  
3. for (String name : Collections.list(names)) { 
4.    System.out.println(name + " : " + request.getHeader(name)); 
5. } 

Enumeration<String> names = request.getHeaderNames();

for (String name : Collections.list(names)) {
    System.out.println(name + " : " + request.getHeader(name));
}