使用SpringMvc的CommonsMultipartResolver上传文件（效率很高）

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我是靠谱客的博主难过摩托，这篇文章主要介绍使用SpringMvc的CommonsMultipartResolver上传文件（效率很高），现在分享给大家，希望可以做个参考。

1.springmvc.xml中上传配置：

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    <!-- 多部分文件上传 -->
    <bean id="multipartResolver"
    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="104857600" />
        <property name="defaultEncoding" value="UTF-8"></property>
    </bean>

2.控制器（Controller）中接收请求的代码

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/**
     * @Description 上传图片
     * @Author 刘俊重
     * @Date 2017/6/12
     */
    @IgnoreAuth
    @PostMapping("uploadImage")
    @ResponseBody
    public Out uploadImage( HttpServletRequest request) throws IOException{
        // 将当前上下文初始化给 CommonsMutipartResolver （多部分解析器）
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
        multipartResolver.setDefaultEncoding("utf-8");  //设置编码
        String res = null;
        // 检查form中是否有enctype="multipart/form-data"
        if(multipartResolver.isMultipart(request)) {
            // 将request变成多部分request
            MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
            // 获取multiRequest中的所有文件名
            Iterator<String> iter = multiRequest.getFileNames();
            while(iter.hasNext()) {// 一次性遍历所有文件
                MultipartFile file = multiRequest.getFile(iter.next());
                if(file != null) {
                    String name = FileUtil.getOSSFile(file);
                    InputStream input = file.getInputStream();
                    OSSClient client = ossFactory.getClient();
                    OSSUtil.putObject(input,file.getSize(), client, SystemVar.OSS_BUCKET, name);
                    res =  SystemVar.OSS_URL+name;
                }
            }
        }
        return Out.ok().put("path",res);
    }

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    /**
     * @Description 上传图片
     * @Author 刘俊重
     * @Date 2017/6/12
     */
    @IgnoreAuth
    @PostMapping("uploadImage")
    @ResponseBody
    public Out uploadImage( HttpServletRequest request) throws IOException{
        // 将当前上下文初始化给 CommonsMutipartResolver （多部分解析器）
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
        multipartResolver.setDefaultEncoding("utf-8");  //设置编码
        String res = null;
        // 检查form中是否有enctype="multipart/form-data"
        if(multipartResolver.isMultipart(request)) {
            // 将request变成多部分request
            MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
            // 获取multiRequest中的所有文件名
            Iterator<String> iter = multiRequest.getFileNames();
            while(iter.hasNext()) {// 一次性遍历所有文件
                MultipartFile file = multiRequest.getFile(iter.next());
                if(file != null) {
                    String name = FileUtil.getOSSFile(file);
                    InputStream input = file.getInputStream();
                    OSSClient client = ossFactory.getClient();
                    OSSUtil.putObject(input,file.getSize(), client, SystemVar.OSS_BUCKET, name);
                    res =  SystemVar.OSS_URL+name;
                }
            }
        }
        return Out.ok().put("path",res);
    }