struts2的JSP编译执行后还是SERVLET吗
最近看一个项目的源码的时候突然想起，既然struts2继承MVC设计模式，将视图与控制分离开，与SERVLET API的耦合降到最低，那么JSP编译执行之后的文件还是一个SERVLET吗？于是我在TOMCAT里面看了下，发现与纯JSP确实不一样，但是又很相似，大概是这种 这到底是什么？跟SERVLET有什么区别？请大虾们详细解下

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import java.util.*;
import com.bbs.struts.DAO.*;
import com.bbs.struts.tl.*;
import java.util.*;
import com.bbs.struts.DAO.*;

public final class register_jsp extends org.apache.jasper.runtime.HttpJspBase
  implements org.apache.jasper.runtime.JspSourceDependent {

  private static final JspFactory _jspxFactory = JspFactory.getDefaultFactory();

  private static java.util.List _jspx_dependants;

  static {
  _jspx_dependants = new java.util.ArrayList(4);
  _jspx_dependants.add("/top.jsp");
  _jspx_dependants.add("/top2.jsp");
  _jspx_dependants.add("/footer.jsp");
  _jspx_dependants.add("/WEB-INF/app.tld");
  }

  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005fif_0026_005ftest;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005fform_0026_005fnamespace_005fid_005faction;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005felse;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005fproperty_0026_005fvalue_005fnobody;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005ftextfield_0026_005fsize_005fname_005fmaxlength_005fid_005fnobody;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005fpassword_0026_005fsize_005fname_005fmaxlength_005fid_005fnobody;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005fproperty_0026_005fvalue_005fdefault_005fnobody;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fapp_005fdisplayCount_005fnobody;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005fform_0026_005fnamespace_005faction;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005ftextfield_0026_005fvalue_005fsize_005fname_005fmaxlength_005fid_005fnobody;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005fradio_0026_005fvalue_005fname_005flist_005fcssStyle_005fnobody;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005ftextarea_0026_005frows_005fname_005fid_005fnobody;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005fselect_0026_005fvalue_005frequired_005fonchange_005fname_005flist_005fid_005fheaderKey_005fnobody;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005fsubmit_0026_005fvalue_005ftype_005fonclick_005fcssClass_005fnobody;
  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fs_005fsubmit_0026_005fvalue_005ftype_005fnobody;

  private javax.el.ExpressionFactory _el_expressionfactory;
  private org.apache.AnnotationProcessor _jsp_annotationprocessor;

  public Object getDependants() {
  return _jspx_dependants;
  }

  public void _jspInit() {
  _005fjspx_005ftagPool_005fs_005fif_0026_005ftest = org.apache.jasper.runtime.TagHandlerPool.getTagHandlerPool(getServletConfig());
  _005fjspx_005ftagPool_005fs_005fform_0026_005fnamespace_005fid_005faction = org.apache.jasper.runtime.TagHandlerPool.getTagHandlerPool(getServletConfig());
  _005fjspx_005ftagPool_005fs_005felse = org.apache.jasper.runtime.TagHandlerPool.getTagHandlerPool(getServletConfig());
  _005fjspx_005ftagPool_005fs_005fproperty_0026_005fvalue_005fnobody = org.apache.jasper.runtime.TagHandlerPool.getTagHandlerPool(getServletConfig());