elementui实现图片和表单信息同时上传

前端代码（vue框架）：

<template>
  <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
    <el-form-item label="课程名称" prop="name">
      <el-input v-model="ruleForm.name">el-input>
    el-form-item>
    <el-form-item label="课程描述" prop="desc">
      <el-input type="textarea" v-model="ruleForm.desc">el-input>
    el-form-item>
    <el-form-item label="课程图片">
      <el-upload
          class="avatar-uploader"
          action="#"
          ref="upload"
          :http-request="httprequest"
          :show-file-list="false"
          :auto-upload="false"
          :on-change="hanchange"
          >
        <img v-if="ruleForm.imageUrl" :src="ruleForm.imageUrl" class="avatar">
        <i v-else class="el-icon-plus avatar-uploader-icon">i>
      el-upload>
    el-form-item>
    <el-form-item>
      <el-button type="primary" @click="submitForm('ruleForm')">立即创建el-button>
      <el-button @click="resetForm('ruleForm')">重置el-button>
    el-form-item>
  el-form>
template>
<script>
import axios from "axios";
export default {
  data() {
    return {
      ruleForm: {
        name: '',
        desc: '',
        imageUrl:"",
      },
      rules: {
        name: [
          { required: true, message: '请输入课程名称', trigger: 'blur' },
          {  max: 20, message: '最多20个字符', trigger: 'blur' }
        ],
        desc: [
          { required: true, message: '请填写课程描述', trigger: 'blur' },
          {max:20,message:'描述最多20个字符',trigger: "blur"}
        ]
      }
    };
  },
  methods: {
    httprequest(param){
      //拷贝图片到表单数据之中
      this.ruleForm.file=param.file
    },
    submitForm(formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          this.$refs.upload.submit()
          let formdata=new FormData()
          formdata.append("name",this.ruleForm.name)
          formdata.append("desc",this.ruleForm.desc)
          formdata.append("file",this.ruleForm.file)
          let config={
            header:{
              "Content-Type": "multipart/form-data"
            }
          }
         console.log(formdata)
         axios.post("http://localhost:8181/image",formdata,config)
          console.log("submit")
        } else {
          console.log('error submit!!');
          return false;
        }
      });
    },
    resetForm(formName) {
      this.$refs[formName].resetFields();
      this.ruleForm.imageUrl=''
    },
    hanchange(file){
        //显示图片
        this.ruleForm.imageUrl= URL.createObjectURL(file.raw);
    }
 
  }
}
script>
<style>
.avatar-uploader .el-upload {
border: 1px dashed #d9d9d9;
border-radius: 6px;
cursor: pointer;
position: relative;
overflow: hidden;
}
.avatar-uploader .el-upload:hover {
border-color: #409EFF;
}
.avatar-uploader-icon {
font-size: 28px;
color: #8c939d;
width: 178px;
height: 178px;
line-height: 178px;
text-align: center;
}
.avatar {
width: 178px;
height: 178px;
display: block;
}
style>

后端接口:(跨域请求这里小编使用的添加@CrossOrigin()注解)

@Controller
@ResponseBody
//跨越请求
@CrossOrigin("http://localhost:7070")
public class webcontrller {
 
    //普通查询
    @Autowired
    private userservice userservice;
    @GetMapping("/users")
    public List GetAlluser(){
        List users = userservice.selectList(null);
        return users;
    }
 
    //简单的分页效果的查询
 
    @GetMapping("/pages")
    public PageInfopages(@RequestParam(defaultValue = "5") Integer pagesize,
                               @RequestParam(defaultValue ="1") Integer pageNum ){
        PageHelper.startPage(pageNum,pagesize);
        PageInfopageInfo=new PageInfo<>(userservice.selectList(null));
        return  pageInfo;
    }
    //头像上传回显
    @PostMapping("/image")
    public String url(MultipartFile file,String name,String desc) throws IOException {
        //获取图片的原始名字
        String originalFilename = file.getOriginalFilename();
        //获取文件的后缀
        String substring = originalFilename.substring(originalFilename.lastIndexOf("."));
       //设置uuid
        String uuid= UUID.randomUUID().toString();
        //设置新的图片名字
        String filename=uuid+substring;
        System.out.println(filename);
        //获取文件的路径
        String path= "D:/网站素材图片/";
        file.transferTo(new File(path,filename));
        System.out.println(name+desc);
        return path+filename;
    }
 
}

执行结果：