Spring mvc 多文件上传每个文件加一个效力范围_ssm上传多个文件时,有些不选择文件点上传会报错吗-优快云博客

本文介绍了一个使用Java实现的文件上传功能，包括前端HTML表单的设计和后端对上传文件的处理逻辑。此外，还涉及了如何通过JavaScript动态添加文件上传按钮及对应的文件属性选择。

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controller 
                                lawDO.setEffectId(Integer.valueOf(request
                                        .getParameter("status" + index)));

js
var i=1;
    function  addUploadButton(){ 
        
         //  按ID找到FOrm
         var  uploadForm = document.getElementById( "uploadForm" );    
        
         //  创建P元素
         var  pNode = document.createElement( "p" );
        
         //  累加Count以观察次数
        var effectSelect = " 效力范围 <select name='status"+(i++)+"'"+ "class='input input-auto'>";
        effectSelect += "<option value ='1102' selected='selected' >法律</option>";
        effectSelect += "<option value ='1103' >司法解释</option>";
        effectSelect += "<option value ='1104'>行政法规</option>";
        effectSelect += "<option value ='1105'>规章及其他</option>";
        pNode.innerHTML = " <input type='file' name='myfiles' value='浏览文件'/> "+effectSelect ;
        
         //  将P元素添加到body中
        uploadForm.appendChild(pNode);
    }

CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
//检查form中是否有enctype="multipart/form-data"
if (!multipartResolver.isMultipart(request)) {
    System.out.println("不是文件requst");
}
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
MultipartFile fileOne = multiRequest.getFile("testFile");
MultipartFile file = multiRequest.getFile(i + "_" + j + "_" + "file");