JavaEE Request

最新推荐文章于 2025-02-28 10:26:11 发布

chocoMoss

最新推荐文章于 2025-02-28 10:26:11 发布

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文章标签： java html http

本文链接：https://blog.csdn.net/chocomoss/article/details/120789770

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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

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>学生管理系统</title>
</head>
<body>

<form action="/add" method="post" enctype="multipart/form-data">
    姓名：<input type="text" placeholder="请输入姓名" name="name"></input><br/>
    年龄：<input type="text" placeholder="请输入年龄" name="age"></input><br/>
    文件：<input type="file" placeholder="选择头像" name="img"></input><br/>
    <input type="submit" name="提交"/>
</form>

</body>
</html>

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);
    }
}