Question

在Java servlet中doGet方法和doPost方法是不是一旦遇到servlet中的post请求或者get请求，调用的都是这两

rt

Answer 1

<textarea rows="6" cols="60" name="description"></textarea><br/>
大头照：<input type="file" name="image"><br/>
<input type="hidden" name="id" value="12345">
<input type="submit" value="提交">
</form>

public class RequestDemo2 extends HttpServlet {

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String value = request.getParameter("username");
if(value!=null&&!value.trim().equals("")){
System.out.println(value);
}

System.out.println("------------------------------");

Enumeration<String> e = request.getParameterNames();
while(e.hasMoreElements()){
String name = e.nextElement();
value = request.getParameter(name);
System.out.println(name + "="+value);
}
}

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

}
}