Ajax 提交图片

话不多说，直接上代码

页面部分

<form id="form1" enctype="multipart/form-data">
	id_token: <input type="text" id="id_token" value="qweasd123">
    文件:<input type="file" id="file" name="imgfile">
    <input type="button" onclick="upload()" value="上传">
</form>

js部分

function upload() {
    var formData = new FormData();
    var file = document.getElementById('file').files[0];
    var id_token = $('#id_token').val();
    formData.append("file", file);
    formData.append("id_token", id_token);
    $.ajax({
        url: "/ajax/upload",
        type: "post",
        data: formData,
        dataType: "json",
        cache: false,//上传文件无需缓存
        processData: false,//用于对data参数进行序列化处理 这里必须false
        contentType: false, //必须*/
        success: function (data) {
            console.log(data.file);
            console.log(data.id_token);
        }
    });
}

后台接收部分

@ResponseBody
@RequestMapping(value = "/ajax/upload",method = RequestMethod.POST)
public String upload(MultipartFile file,String id_token) {
    JSONObject json = new JSONObject();
    try {

        System.out.println(file.getOriginalFilename());
        System.out.println(id_token);
        json.put("file", file.getOriginalFilename());
        json.put("id_token", id_token);
    } catch (Exception e) {
        logger.error("AjaxImgController.upload error:", e);
    }
    return json.toString();
}

结果

![](https://img2018.cnblogs.com/blog/1420848/201811/1420848-20181121112320747-685252521.png)

注意部分

<!--文件上传设置 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="maxUploadSize" value="10000000"/>
</bean>

	<dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.4</version>
    </dependency>
    <dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.3.3</version>
    </dependency>