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超轻量级php框架startmvc

layui 图片上传+表单提交+ Spring MVC的实例

更新时间:2020-09-14 19:42:01 作者:startmvc
Layui的上传是最常用的,不可或缺,记录一下代码,以后复制都能用!!1.前端HTML:<divclass="layui-

Layui 的上传是最常用的, 不可或缺, 记录一下代码, 以后复制都能用!!

1.前端HTML:




<div class="layui-form-item">
 <label class="layui-form-label">修改头像</label>
 <div class="layui-input-inline uploadHeadImage">
 <div class="layui-upload-drag" id="headImg">
 <i class="layui-icon"></i>
 <p>点击上传图片,或将图片拖拽到此处</p>
 </div>
 </div>
 <div class="layui-input-inline">
 <div class="layui-upload-list">
 <img class="layui-upload-img headImage" src="http://t.cn/RCzsdCq" id="demo1">
 <p id="demoText"></p>
 </div>
 </div>
</div>

2.前端js:


<script type="text/javascript">
 layui.use(["jquery", "upload", "form", "layer", "element"], function () {
 var $ = layui.$,
 element = layui.element,
 layer = layui.layer,
 upload = layui.upload,
 form = layui.form;
 //拖拽上传
 var uploadInst = upload.render({
 elem: '#headImg'
 , url: '/upload/headImg'
 , size: 500
 , before: function (obj) {
 //预读本地文件示例,不支持ie8
 obj.preview(function (index, file, result) {
 $('#demo1').attr('src', result); //图片链接(base64)
 });
 }
 , done: function (res) {
 //如果上传失败
 if (res.code > 0) {
 return layer.msg('上传失败');
 }
 //上传成功
 //打印后台传回的地址: 把地址放入一个隐藏的input中, 和表单一起提交到后台, 此处略..
 /* console.log(res.data.src);*/
 window.parent.uploadHeadImage(res.data.src);
 var demoText = $('#demoText');
 demoText.html('<span style="color: #8f8f8f;">上传成功!!!</span>');
 }
 , error: function () {
 //演示失败状态,并实现重传
 var demoText = $('#demoText');
 demoText.html('<span style="color: #FF5722;">上传失败</span> <a class="layui-btn layui-btn-mini demo-reload">重试</a>');
 demoText.find('.demo-reload').on('click', function () {
 uploadInst.upload();
 });
 }
 });
 element.init();
 });
</script>

3.页面展示:

4.后台SpringMVC 接受:


/**
 * 个人信息上传
 * @return {Result}
 */
@RequestMapping(value = "/upload/headImg", method = {RequestMethod.POST})
@ResponseBody
public Object headImg(@RequestParam(value="file",required=false) MultipartFile file, HttpServletRequest request, HttpServletResponse response) throws Exception {
 if (SecurityUtils.getSubject().isAuthenticated() == false) {
 return "redirect:/backEnd/login";
 }
 String prefix="";
 String dateStr="";
 //保存上传
 OutputStream out = null;
 InputStream fileInput=null;
 try{
 if(file!=null){
 String originalName = file.getOriginalFilename();
 prefix=originalName.substring(originalName.lastIndexOf(".")+1);
 dateStr = format.format(new Date());
 String filepath = request.getServletContext().getRealPath("/static") + uploadDir + dateStr + "." + prefix;
 filepath = filepath.replace("\\", "/");
 File files=new File(filepath);
 //打印查看上传路径
 System.out.println(filepath);
 if(!files.getParentFile().exists()){
 files.getParentFile().mkdirs();
 }
 file.transferTo(files);
 }
 }catch (Exception e){
 }finally{
 try {
 if(out!=null){
 out.close();
 }
 if(fileInput!=null){
 fileInput.close();
 }
 } catch (IOException e) {
 }
 }
 Map<String,Object> map2=new HashMap<>();
 Map<String,Object> map=new HashMap<>();
 map.put("code",0);
 map.put("msg","");
 map.put("data",map2);
 map2.put("src","../../../static"+uploadDir + dateStr + "." + prefix);
 return map;
}

5.关于表单请求, 正常使用layui的表单上传就可以了.. 这里就不写了, 太简单了, 我其它博客有写,请去翻阅,嗯 ,就这样.......

以上这篇layui 图片上传+表单提交+ Spring MVC的实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持脚本之家。

layui 图片上传 表单提交 Spring MVC