vue form表单上传文件

<script src="https://cdn.staticfile.org/vue-resource/1.5.1/vue-resource.min.js"></script>
<div id="app" v-cloak>
    <input type="text" v-model="param.title">
    <input type="text" v-model="param.content">
    <input type="file" @change="getFile($event,'file_avatar')">
    <input type="file" @change="getFile($event,'file_thumb')">
    <button @click="submitForm($event)">OK</button>
</div>

<script>
new Vue({
    el: '#app',
    data: {
        param: {
            title: info.title,
            content: info.content,
            file_avatar: '',
            file_thumb: '',
        },
        formData: new FormData(),

    },
    mounted: function () {

    },
    methods: {
        getFile(event, input_file_name) {
            this.formData.append(input_file_name, event.target.files[0]);
        },
        submitForm(event) {
            event.preventDefault();
            for (let i in this.param) {
                this.formData.append(i, this.param[i]);
            }
            let config = {
                headers: {
                    'Content-Type': 'multipart/form-data'
                }
            };
            this.$http.post('/url', this.formData, config).then(function (res) {
                if (res.status === 200) {
                    console.log(res);
                }
            }).catch((error) => {
                console.log(error);
            });
        }
    },

});
</script>

---

单独上传文件：

<input class="file" name="file" type="file" accept="image/png,image/gif,image/jpeg" @change="update"/>

methods: {
      update(e){
        let file = e.target.files[0];
        let param = new FormData(); //创建form对象
        param.append('file',file);//通过append向form对象添加数据
        console.log(param.get('file')); //FormData私有类对象，访问不到，可以通过get判断值是否传进去
        let config = {
          headers:{'Content-Type':'multipart/form-data'}
        }; //添加请求头
        this.$http.post('http://127.0.0.1:8081/upload',param,config)
          .then(response=>{
            console.log(response.data);
          })
      }
    }

Form表单上传文件：

<form>
    <input type="text" value="" v-model="name" placeholder="请输入用户名">
    <input type="text" value="" v-model="age" placeholder="请输入年龄">
    <input type="file" @change="getFile($event)">
    <button @click="submitForm($event)">提交</button>
</form>

    data: {
          name: '',
          age: '',
          file: ''
        },
        methods: {
          getFile(event) {
            this.file = event.target.files[0];
            console.log(this.file);
          },
          submitForm(event) {
            event.preventDefault();
            let formData = new FormData();
            formData.append('name', this.name);
            formData.append('age', this.age);
            formData.append('file', this.file);
 
            let config = {
              headers: {
                'Content-Type': 'multipart/form-data'
              }
            }
 
            this.$http.post('http://127.0.0.1:8081/upload', formData, config).then(function (response) {
              if (response.status === 200) {
                console.log(response.data);
              }
            })
          }
        }