Spring MVC 上传文件

本篇帖子讲解使用异步方式上传文件， 使用 jquery.form.js 来实现；

一、配置spring的配置文件

<!-- 上传文件 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="defaultEncoding" value="utf-8"></property>   
    <property name="maxUploadSize" value="10485760000"></property>  
    <property name="maxInMemorySize" value="40960"></property> 
</bean>

二、前台的文件

1、jsp文件

<form id="jvForm" action="o_save.shtml" method="post">
    <table cellspacing="1" cellpadding="2" width="100%" border="0" class="pn-ftable">
        <tbody>
            <tr>
                <td width="20%" class="pn-flabel pn-flabel-h">
                    <span class="pn-frequired">*</span>上传商品图片(90x150尺寸):
                </td>
                <td width="80%" class="pn-fcontent">
                    注:该尺寸图片必须为90x150。
                </td>
            </tr>
            <tr>
                <td width="20%" class="pn-flabel pn-flabel-h"></td>
                <td width="80%" class="pn-fcontent">
                    <img width="100" height="100" id="imgSize1ImgSrc"/>
                    <input type="file" name="pic" onchange="uploadPic()"/>
                </td>
            </tr>
        </tbody>
        <tbody>
            <tr>
                <td class="pn-fbutton" colspan="2">
                    <input type="submit" class="submit" value="提交"/> &nbsp; <input type="reset" class="reset" value="重置"/>
                </td>
            </tr>
        </tbody>
    </table>
</form>

2、js文件

function uploadPic()
{
    //异步上传  jquery.form.js插件
    //使用js模拟表单异步上传
    var options = {
        url : "/upload/uploadPic.do",
        type : "POST",
        dataType : "json",
        success : function(data){
            //data
        }
    };
    $("#jvForm").ajaxSubmit(options);
}

三、java代码

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;

@Controller
public class UploadController
{

    //上传单张图片
    @RequestMapping(value = "/upload/uploadPic.do")
    public void toEdit(@RequestParam(required = false) MultipartFile pic)
    {
        System.out.println(pic.getOriginalFilename());
        
    }
}

参考： https://www.cnblogs.com/lichenwei/p/4160342.html