vip21-springMvc/day01/src/main/java/com/lovecoding/springmvc/StudentController.java

package com.lovecoding.springmvc;

import org.springframework.stereotype.Controller;
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.ResponseBody;

import javax.servlet.http.HttpSession;

/**
 * RestFil 风格API接口
 * 一般我们设计 RESTFIL 风格接口， 会在类上 注解一个 请求路径
 * 然后在 方法上 设计 增删改查等操作， 使用不同的 Method 方法处理不同的业务
 *
 */

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

    /**
     * 新增操作
     * @param studentId
     * @return
     */
    @RequestMapping(
            value ="/{studentId}",
            method = RequestMethod.POST)
    public String add(@PathVariable(
            value = "studentId",
            required = true) Long studentId, HttpSession httpSession){
        System.out.println( "新增学员操作成功！！： " + studentId );
        httpSession.setAttribute("action", "添加成功 ID：" + studentId);

        return "/success.jsp";
    }

    /**
     * 删除操作
     * @param studentId
     * @return
     */
    @RequestMapping(
            value ="/{studentId}",
            method = RequestMethod.DELETE)
    @ResponseBody
    public String del(@PathVariable(
            value = "studentId",
            required = true) Long studentId, HttpSession httpSession){
        System.out.println( "删除学员操作成功！！： " + studentId );
        httpSession.setAttribute("action", "删除成功 ID：" + studentId);

        return "Delete Student Success！！： " + studentId;
        //return "/success.jsp";
    }

    /**
     * 修改操作
     * @param studentId
     * @return
     */
    @RequestMapping(
            value ="/{studentId}",
            method = RequestMethod.PUT)
    @ResponseBody
    public String update(@PathVariable(
            value = "studentId",
            required = true) Long studentId, HttpSession httpSession){
        System.out.println( "修改学员操作成功！！： " + studentId );
        httpSession.setAttribute("action", "修改成功 ID：" + studentId);
        return "Update Student Success！！： " + studentId;
        //return "/success.jsp";
    }

    /**
     * 查询操作
     * @param studentId
     * @return
     */
    @RequestMapping(
            value ="/{studentId}",
            method = RequestMethod.GET)
    public String get(@PathVariable(
            value = "studentId",
            required = true) Long studentId, HttpSession httpSession){
        System.out.println( "查询学员操作成功！！： " + studentId );
        httpSession.setAttribute("action", "查询成功 ID：" + studentId);

        return "/success.jsp";
    }

}