Vue3 使用v-md-editor如何动态上传图片了

前端代码:

<v-md-editor 
   :autofocus="true"
   v-model="blog.content" 
   height="510px"
   placeholder="请输入内容"
   left-toolbar="undo redo clear | h bold italic strikethrough quote | ul ol table hr | image | save "
   :disabled-menus="[]"
   @upload-image="handleUploadImage"
             >
</v-md-editor>

按我以上配置后,你把图片插入或者从本地拖入,就可以激发upload-image绑定的函数,我这的名称为:handleUploadImage

先看看这个图片编辑时的图片吧

大致流程图

在setup看看这个函数(这是我写好的)

files:表示你拖入的图片文件,可以是多个,也可以是一个

insertImage:url就表示你需要回显的地址;desc就是名称;markdown语法:![desc](url)

function handleUploadImage(event,insertImage,files){
    for(let i in files){
        const formData = new FormData();
        formData.append('file', files[i]);
        proxy.$axios.post(`${proxy.PATH}/uploadImg`,formData).then(
            response => {
                insertImage({
                    url:response.data,
                    desc: 'DESC',
                })
            },
            error => {
                console.log('请求失败了',error.message)
            }
        )
    }
}

有没有人和我一样去看过这个file长什么样子

可以看到我上面发送了一个请求到后端,标签带上了这个文件;就是下面这段代码

 proxy.$axios.post(`${proxy.PATH}/uploadImg`,formData).then(
            response => {
                insertImage({
                    url:response.data,
                    desc: 'DESC',
                })
            },
            error => {
                console.log('请求失败了',error.message)
            }
        )

后端的代码:

请求的位置

package com.mhy.blog.controller;
import com.mhy.blog.utils.ConstUtils;
import com.mhy.blog.utils.FileUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import java.util.Objects;

@RestController
public class FileController {
    @PostMapping("/uploadImg")
    public String img(@RequestParam(value = "file") MultipartFile file){
        try{
            return FileUtils.uploadImg(file,
                    ConstUtils.SAVE_IMG_PATH,
                    Objects.requireNonNull(file.getOriginalFilename()),
                    ConstUtils.REQUEST_IMG_PATH);
        }catch (Exception e){
            e.printStackTrace();
            return ConstUtils.IMG_UPLOAD_FAILURE;
        }
    }
}

注意里面有我定制的一些常量:

public static String SAVE_IMG_PATH = "D:\\JAVAIDEA\\Blog\\java\\blog\\src\\main\\resources\\public\\img\\";

public static String REQUEST_IMG_PATH = "http://localhost:8888/blog/img/";
public static String IMG_UPLOAD_FAILURE = "图片上传失败";

看看这个工具方法:FileUtils.uploadImg

package com.mhy.blog.utils;

import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.util.Random;
import java.util.UUID;


public class FileUtils {

    public static String uploadImg(MultipartFile file, String path1, String name, String path2){
        // 通过uuid产生一个图片名字
        String uuid = UUID.randomUUID().toString().trim().replaceAll("-","");
        String imgName = uuid + name;
        // 这是我随机选择了一文件夹 这里只是我个人爱好
        String code = Integer.toString(new Random().nextInt(5) + 1);
        // 拼接路径
        String imgPath = path1 + "img" + code + "\\";
        String requestPath = path2 + "img" + code + "/";

        try {
            // 上传操作
            File imgFile = new File(imgPath, imgName);
            file.transferTo(imgFile);
        } catch (Exception e) {
            e.printStackTrace();
        }
		// 返回图片的路就
        return requestPath + imgName;
    }
}

后端图片的位置

测试:

顺便附带上我的main.js吧

// markdown 的引入
import VueMarkdownEditor from '@kangc/v-md-editor'
import '@kangc/v-md-editor/lib/style/base-editor.css'
import VMdpreview from '@kangc/v-md-editor/lib/preview'
import vuepressTheme from '@kangc/v-md-editor/lib/theme/vuepress.js'
import '@kangc/v-md-editor/lib/theme/style/vuepress.css'

// github主题
import githubTheme from '@kangc/v-md-editor/lib/theme/github.js'
import '@kangc/v-md-editor/lib/theme/style/github.css'
// 引入 highlight核心代码
import hljs from 'highlight.js/lib/core'
// 引入代码高亮
import json from 'highlight.js/lib/languages/json'
import java from 'highlight.js/lib/languages/java'
import javascript from 'highlight.js/lib/languages/javascript'
import c from 'highlight.js/lib/languages/c'
import cpp from 'highlight.js/lib/languages/cpp'
import armasm from 'highlight.js/lib/languages/armasm'
// 按需引入 代码高亮
hljs.registerLanguage('json',json)
hljs.registerLanguage('java',java)
hljs.registerLanguage('javascript',javascript)
hljs.registerLanguage('c',c)
hljs.registerLanguage('cpp',cpp)
hljs.registerLanguage('armasm',armasm)

// 配置
VMdpreview.use(vuepressTheme)
VueMarkdownEditor.use(githubTheme,{
    Hljs: hljs,
    extend(md){
        // 扩展插件
    }
})

const app = createApp(App)
app.use(VueMarkdownEditor)
app.use(VMdpreview)
app.mount('#app')