Thinkphp框架+Layui实现图片/文件上传功能分析

本文实例讲述了Thinkphp框架+Layui实现图片/文件上传功能。分享给大家供大家参考，具体如下：

在项目中用到了，再网上找了现成的代码都是借口异常或者非法上传，所以在一番摸索搞定之后拿来和大家分享。

html：

1. <form class="layui-form layui-form-pane" action="" style="margin-top:20px;" enctype="multipart/form-data">
2. <center>
3. <div class="layui-upload-drag" id="uploadBanner">
4. <img class="layui-upload-img" id="upload-photo">
5. <i class="layui-icon" id="upload-icon"></i>
6. <p>点击上传，或将文件拖拽到此处</p>
7. <p>建议尺寸1920*512</p>
8. </div>
9. <input type="hidden" id="res" name="banner_photo" value="" lay-verify="required" />
10. <div class="layui-form-item" style="margin-top:10px;">
11. <button class="layui-btn" lay-submit="" lay-filter="sub">提交</button>
12. </div>
13. <div id="demoText"></div>
14. </center>
15. </form>

JS：

1. layui.use('upload', function(){
2. var $ = layui.jquery
3. ,upload = layui.upload;
4. //普通图片上传
5. var uploadInst = upload.render({
6. elem: '#uploadBanner'
7. ,url: "{:U('Api/doUploadPic')}"
8. ,before: function(obj){
9. //预读本地文件示例，不支持ie8
10. obj.preview(function(index, file, result){
11. $('#upload-photo').attr('src', result); //图片链接（base64）
12. $('#upload-photo').attr('style', 'height:10rem;');
13. $('#upload-icon').attr('style','display:none;');
14. });
15. }
16. ,done: function(res, index, upload){
17. //如果上传失败
18. if(res.code > 0){
19. return layer.msg('上传失败');
20. }
21. //上传成功
22. console.log("成功啦！" + obj2string(res) + " " + index + " " + upload);
23. }
24. ,error: function(){
25. //演示失败状态，并实现重传
26. var demoText = $('#demoText');
27. demoText.html('<span style="color: #FF5722;">上传失败</span> <a class="layui-btn layui-btn-xs demo-reload">重试</a>');
28. demoText.find('.demo-reload').on('click', function(){
29. uploadInst.upload();
30. });
31. }
32. });
33. });

PHP接口：

1. public function doUploadPic()//上传模块
2. {
3. $upload = new \Think\Upload();
4. $upload->maxSize = 3145728;
5. $upload->exts = array('jpg', 'gif', 'png', 'jpeg');
6. $upload->rootPath = './Public/'; // 设置附件上传根目录
7. $upload->savePath = 'upload/'; // 设置附件上传子目录
8. $info = $upload->upload();
9. if(!$info){
10. $this->error($upload->getError());
11. }else{
12. foreach($info as $file){
13. $data = '/Public'.$file['savepath'] . $file['savename'];
14. $file_a=$data;
15. echo '{"code":0,"msg":"成功上传","data":{"src":"'.$file_a.'"}}';
16. }
17. }
18. }

图片就上传到/Public/upload文件夹下了：

希望本文所述对大家基于ThinkPHP框架的PHP程序设计有所帮助。

原文链接：https://blog.csdn.net/qq_17497931/article/details/81290604