最近没事刚好练习下vue+springboot前段后分离的项目、用上了图片上传功能、记录一下。
前端待提交的表单部分代码。
<el-form-item label="封面图片"><el-upload v-model="dataForm.title"class="avatar-uploader":limit="1"list-type="picture-card":on-preview="handlePictureCardPreview"multiple:http-request="uploadFile":on-remove="handleRemove":on-change='changeUpload':file-list="images"><i class="el-icon-plus"></i></el-upload></el-form-item>
复制代码el-upload里面的元素解释：
on-preview:点击文件列表中已上传的文件时的事件
on-remove:删除文件时候调用的方法
on-change:文件状态改变时的事件，添加文件、上传成功和上传失败时都会被调用
file-list:上传的文件列表或者默认回显的数据展示渲染
retrun和data
return {images: [{name: 'food.jpg', url: 'https://img-blog.csdnimg.cn/20210329194832973.png'}],imageUrl: '',fileList: [], // 文件上传数据（多文件合一）dialogImageUrl: '',dialogVisible: false,options: [],content: '',editorOption: {},visible: false,dataForm: {id: 0,title: '',content: '',bz: ''},tempKey: -666666 // 临时key, 用于解决tree半选中状态项不能传给后台接口问题. # 待优化}
复制代码预览图片和上传图片以及删除图片
changeUpload: function(file, fileList) {//预览图片this.fileList = fileList;},uploadFile(file){},handleRemove(file, fileList) {},handlePictureCardPreview(file) {this.dialogImageUrl = file.url;this.dialogVisible = true;},
复制代码这里我是用fomrData对象进行提交的、因为只需要上传一张单张封面图片、还有添加其他的一些表单内容进去
// 表单提交dataFormSubmit () {const form = new FormData()// FormData 对象form.append('file', this.fileList);form.append('title', this.dataForm.title);form.append('content', this.$refs.text.value);this.$refs['dataForm'].validate((valid) => {if (valid) {this.$http({url: this.$http.adornUrl(`/sys/inform/${!this.dataForm.id ? 'save' : 'update'}`),method: 'post',data: form}).then(({data}) => {if (data && data.code === 0) {this.$message({message: '操作成功',type: 'success',duration: 1500,onClose: () => {this.visible = falsethis.$emit('refreshDataList')}})} else {this.$message.error(data.msg)}})}})}
复制代码后台的话通过HttpServletRequest request--WebUtils .getNativeRequest(request, MultipartHttpServletRequest.class)来获取文件请求并解析文件到服务器或本地
/*** @author lyy* 保存 PC-后台上传文件*/
@RequestMapping(value = "sys/file/save", method = {RequestMethod.POST, RequestMethod.GET})
@Transactional
public R save(HttpServletRequest request) {String classify = request.getParameter("classify");MultipartHttpServletRequest multipartRequest = WebUtils.getNativeRequest(request, MultipartHttpServletRequest.class);String fileName = "";if (multipartRequest != null) {Iterator<String> names = multipartRequest.getFileNames();while (names.hasNext()) {List<MultipartFile> files = multipartRequest.getFiles(names.next());if (files != null && files.size() > 0) {for (MultipartFile file : files) {fileName = file.getOriginalFilename();String SUFFIX = FileUtil.getFileExt(fileName);File uFile = new File();uFile.setFileName(fileName);uFile.setClassify(classify);uFile.setCreateTime(new Date());uFile.setFileType(SUFFIX);String uuid = FileUtil.uuid();try {uFile.setPath(uploadFile(uuid,file) +uuid+"."+SUFFIX);} catch (IOException e) {e.printStackTrace();}fileService.save(uFile);}}}}return R.ok();
}
复制代码上传文件到本地的静态方法
/*** 上传文件*@author lyy* @param file* @return* @throws IOException* @throws IllegalStateException*/public static String uploadFile(String uuid, MultipartFile file) throws IllegalStateException, IOException {String defaultUrl = MyFileConfig.getFilePath();String Directory = java.io.File.separator ;String realUrl = defaultUrl + Directory;java.io.File realFile = new java.io.File(realUrl);if (!realFile.exists() && !realFile.isDirectory()) {realFile.mkdirs();}String fullFile = realUrl + uuid + "."+FileUtil.getFileExt(file.getOriginalFilename());file.transferTo(new java.io. File(fullFile));String relativePlanUrl = Directory;return relativePlanUrl.replaceAll("\\", "/");}
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