springboot成神之——spring的文件上传

时间：2023-03-09 16:02:26
springboot成神之——spring的文件上传

本文介绍spring的文件上传

目录结构

springboot成神之——spring的文件上传

配置application

spring.servlet.multipart.max-file-size=5MB

spring.servlet.multipart.max-request-size=5MB

DemoApplication

package com.springlearn.learn;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

public class DemoApplication {

	public static void main(String[] args) {

		SpringApplication.run(DemoApplication.class, args);

	}

}

WebConfig

package com.springlearn.learn.config;

import org.springframework.context.annotation.Configuration;

import org.springframework.web.servlet.config.annotation.CorsRegistry;

import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration

public class WebConfig implements WebMvcConfigurer {

    @Override

    public void addCorsMappings(CorsRegistry registry) {

        registry.addMapping("/**").allowedOrigins("*").allowedMethods("GET", "POST", "PUT", "DELETE").allowedOrigins("*")

        .allowedHeaders("*");

    }

}

TestController

package com.springlearn.learn.controller;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileOutputStream;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import com.springlearn.learn.DemoApplication;

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.RestController;

import org.springframework.web.multipart.MultipartFile;

@RestController

public class TestController {

    @ResponseBody

    @RequestMapping(value = "/UploadTest", method = RequestMethod.POST)

    public String AuthTest(@RequestParam("file") MultipartFile files, HttpServletRequest request, HttpServletResponse response) {

        String filePath = DemoApplication.class.getResource("").getPath() + "imgupload";

        // Client File Name

        String name = files.getOriginalFilename();

        System.out.println("Client File Name = " + name);

        if (name != null && name.length() > 0) {

            try {

                // Create the file at server

                File serverFile = new File(filePath + File.separator + name);

                BufferedOutputStream stream = new BufferedOutputStream(new FileOutputStream(serverFile));

                stream.write(files.getBytes());

                stream.close();

                System.out.println("Write file: " + serverFile);

            } catch (Exception e) {

                System.out.println("Error Write file: " + name);

            }

        }

        return "上传成功";

    }

}

前端上传

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <meta http-equiv="X-UA-Compatible" content="ie=edge">

    <title>Document</title>

    <script src="https://unpkg.com/axios/dist/axios.min.js"></script>

    <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>

    <link rel="stylesheet" href="//unpkg.com/iview/dist/styles/iview.css">

    <script src="//unpkg.com/iview/dist/iview.min.js"></script>

</head>

<body>

    <div id="app">

        <Upload

            :before-upload="handleUpload"

            action=""

        >

            <Button icon="ios-cloud-upload-outline">Upload files</Button>

        </Upload>

    </div>

    <script>

        new Vue({

            el: '#app',

            data: {

                visible: false

            },

            methods: {

                show: function () {

                    this.visible = true;

                },

                handleUpload(file) {

                    let param = new FormData();

                    param.append('file',file);

                    let config = {

                        headers:{'Content-Type':'multipart/form-data'}

                    };

                    debugger

                    axios.post('http://localhost:9001/UploadTest', param, config).then(function (response) {

                        console.log(response.data);

                    }).catch(function (error) {

                        console.log(error);

                    }).then(function () {

                    });

                    return false;

                }

            },

        })

    </script>

</body>

</html>

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