Spring Controller的语法如何改写为长尾？

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javapackage orc.dhw.controller;

import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.OutputStream;import java.util.ArrayList;import java.util.List;import java.util.Map;

Spring contruller语法

package orc.dhw.controller; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.OutputStream; import java.util.ArrayList; import java.util.List; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.validation.Valid; import org.springframework.jmx.export.annotation.ManagedAttribute; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.ui.ModelMap; import org.springframework.validation.BindingResult; import org.springframework.validation.ObjectError; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.SessionAttributes; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.servlet.ModelAndView; import orc.dhw.bean.Roles; import orc.dhw.bean.UserInfo; @Controller @RequestMapping("/user") public class UserInfoController { @ModelAttribute("info") public UserInfo initInfo(){ return new UserInfo(1001,"曹操","123456",2,"男"); } @ModelAttribute("list") public List initList(){ List list = new ArrayList (); list.add(new Roles(1,"boss")); list.add(new Roles(2,"ceo")); list.add(new Roles(3,"kfo")); list.add(new Roles(4,"cfo")); return list; } @RequestMapping(value="/index",method=RequestMethod.GET) public String getInfo(){ System.out.println("get请求 -。-"); return "index"; } @RequestMapping(value="/index",method=RequestMethod.POST) public String getInfo(@ModelAttribute("info")UserInfo info,@RequestParam("file")MultipartFile file,HttpServletRequest request){ String img = ""+System.currentTimeMillis(); String servlet = request.getServletContext().getRealPath("img"); try { file.transferTo(new File(servlet+"//"+img+".jpg")); } catch (Exception e) { e.printStackTrace(); } return "down"; } @RequestMapping(value="/down/{name}") public void down(@PathVariable("name")String name,HttpServletRequest request,HttpServletResponse response){ String servlet = request.getServletContext().getRealPath("img"); File file = new File(servlet+"//"+name+".jpg"); if(file.exists()){ response.addHeader("Content-Disposition","attachment;filename="+name+".jpg"); try { OutputStream output = response.getOutputStream(); byte[] b = new byte[1024]; FileInputStream input = new FileInputStream(file); int i; while((i=input.read(b))>0){ output.write(b); } } catch (Exception e) { e.printStackTrace(); } } } }