springMvc-对servletApi的支持以及把后台对象以json方式传到前台

1.对servletApi的支持：request、response以及session、cookie的支持

2.把后台代码以json格式向前台输出：

代码：

package com.java.controller;

import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

import com.java.model.Student;

@Controller
@RequestMapping("/student")
public class StudentController {

private static List<Student> studentList=new ArrayList<Student>();

static{
studentList.add(new Student(1,"张三",11));
studentList.add(new Student(2,"李四",12));
studentList.add(new Student(3,"王五",13));
}

@RequestMapping("/list")
public ModelAndView list(){
ModelAndView mav=new ModelAndView();
mav.addObject("studentList", studentList);
mav.setViewName("student/list");
return mav;
}

@RequestMapping("/preSave")
public ModelAndView preSave(@RequestParam(value="id",required=false) String id){
ModelAndView mav=new ModelAndView();
if(id!=null){
mav.addObject("student", studentList.get(Integer.parseInt(id)-1));
mav.setViewName("student/update");
}else{
mav.setViewName("student/add");
}
return mav;
}

@RequestMapping("/save")
public String save(Student student){
if(student.getId()!=0){
Student s=studentList.get(student.getId()-1);
s.setName(student.getName());
s.setAge(student.getAge());
}else{
studentList.add(student);
}
// return "redirect:/student/list.do";
return "forward:/student/list.do";
}

@RequestMapping("/delete")
public String delete(@RequestParam("id") int id){
studentList.remove(id-1);
return "redirect:/student/list.do";
}
}