JavaEE Request

请求对象
用于发送请求的对象

常用
ServletRequest和HttpServletRequest，区别在于是否和HTTP协议有关

小示例
前端页面代码

    
    




    姓名：

    年龄：

    文件：

    

Student类

package com.example.Web_day01.StudentManageServlet;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Student {
    private String id;
    private String name;
    private int age;
    private String img;
}

Servlet

@WebServlet("/add")
@MultipartConfig
public class AddServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String name = req.getParameter("name");
        int age = Integer.parseInt(req.getParameter("age"));
        String realPath = req.getServletContext().getRealPath("/WEB-INF/img/");
        Part img = req.getPart("img");
        String filename = UUID.randomUUID().toString() + ".jpeg";
        Path path = Paths.get(realPath + filename);
        Files.copy(img.getInputStream(),path);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}