本文实例为大家分享了springMVC图片上传的处理方式，供大家参考，具体内容如下
首先需要依赖的jar包：
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<dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>1.3.2</version></dependency><dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.2.1</version></dependency> |
页面：
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<a href="javascript:;" rel="external nofollow" class="a-upload"> <input class="" type="file" name="file" id="file" required="required">上传</a> |
大家如果觉得默认的上传文件的按钮不好看，可以引入下面的css样式：
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.a-upload { padding: 4px 10px; height: 27px; line-height: 27px; position: relative; cursor: pointer; color: #888; background: #fafafa; border: 1px solid #ddd; border-radius: 4px; overflow: hidden;}.a-upload input { position: absolute; width: 100%; right: 0; top: 0; opacity: 0; filter: alpha(opacity=0); cursor: pointer}.a-upload:hover { color: #444; background: #eee; border-color: #ccc; text-decoration: none} |
前端脚本：
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$('#file').on('change', function () { var $this = $(this); var formData = new FormData(); formData.append('file', $('#file')[0].files[0]); var fileName = $('#file')[0].files[0].name; var fileType = fileName.substring(fileName.lastIndexOf('.') + 1); var fileSize = $('#file')[0].files[0].size; if (fileType != 'jpg' && fileType != 'png' && fileType != 'gif') { alert("请上传.jpg、.png、.gif格式的图片！"); return; } if (fileSize > 300 * 1024) { alert("请上传大小小于300KB的图片！"); return; } $.ajax({ url: '/admin/upload', type: 'POST', data: formData, cache: false, processData: false, contentType: false }).done(function (result) { if (result != '') { $this.closest('div').append('<div class="img-preview"><img src="' + result + '"/></div>'); } else { alert("请上传.jpg、.png、.gif格式的图片！"); } }).fail(function () { alert("图片上传失败！"); });}); |
后端接收：
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@RequestMapping(value = "admin/upload", method = RequestMethod.POST)@ResponseBodypublic String uploadFile(@RequestParam("file") MultipartFile file) { try { String filename = file.getOriginalFilename(); if (filename.endsWith("jpg") || filename.endsWith("png") || filename.endsWith("gif")) { String prefix = filename.substring(filename.lastIndexOf(".")); String imgName = UUID.randomUUID().toString() + prefix; String imgUri = writeToFileSystem(imgName, file.getBytes()); return imgUri; } } catch (Exception e) { LOG.error("uploadFile failed:", e); } return null;} |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://www.cnblogs.com/dali-lyc/p/7351355.html
