若依后台 pdf文件上传预览功能实现
闲话少说，上代码。
add.html上传图片； 控制类保存； show.html展示图片文本。
除此之外，文件上传需要配置存储在本地那个位置（application.yml中的profile），之后就可以通过查找该位置找到该文件。
add.html
<!DOCTYPE html>
<html lang="zh" xmlns:th="http://www.thymeleaf.org" >
<head>
<th:block th:include="include :: header('修改整改任务')" />
<th:block th:include="include :: bootstrap-fileinput-css"/>
<th:block th:include="include :: select2-css" />
</head>
<body class="white-bg">
<div class="wrapper wrapper-content animated fadeInRight ibox-content">
<form class="form-horizontal m" id="form-reform-edit" th:object="${inspectionReform}">
<input name="reformId" th:field="*{reformId}" type="hidden">
<input name="reformCheckid" th:field="*{reformCheckid}" type="hidden">
<div class="form-group">
<label class="col-sm-3 control-label">整改照片路径：</label>
<div class="col-sm-8 fileinput fileinput-new" data-provides="fileinput">
<div class="fileinput-preview thumbnail" data-trigger="fileinput" style="width: 200px; height: 150px;"></div>
<div class="">
<span class="btn btn-white btn-file"><span class="fileinput-new">选择图片</span><span class="fileinput-exists">更改</span> <input type="hidden" name="reformImgpath" th:field="*{reformImgpath}"><input id="filePath" type="file" th:field="*{reformImgpath}"></span>
<a href="#" class="btn btn-white fileinput-exists" data-dismiss="fileinput">清除</a>
</div>
</div>
</div>
</form>
</div>
<th:block th:include="include :: footer" />
<th:block th:include="include :: bootstrap-fileinput-js"/>
<th:block th:include="include :: jasny-bootstrap-js" />
<th:block th:include="include :: select2-js" />
<script th:inline="javascript">
var prefix = ctx + "model/reform";
$("#form-reform-edit").validate({
focusCleanup: true
});
function uploadFile(url) {
var formData = new FormData();
if ($('#filePath')[0].files[0] == null) {
$.modal.alertWarning("请先选择文件路径");
return false;
}
formData.append('reformId',$('#reformId').val());
formData.append('file', $('#filePath')[0].files[0]);
$.ajax({
url: url,
type: 'post',
cache: false,
data: formData,
processData: false,
contentType: false,
dataType: "json",
success: function(result) {
$.operate.successCallback(result);
}
});
}
function submitHandler() {
if ($.validate.form()) {
/*$.operate.save(prefix + "/edit", $('#form-check-edit').serialize());*/
uploadFile(prefix+"/edit");
}
}
</script>
</body>
</html>
控制类
/**
* 修改保存整改任务
*/
@RequiresPermissions("model:reform:edit")
@Log(title = "整改任务", businessType = BusinessType.UPDATE)
@PostMapping("/edit")
@ResponseBody
public AjaxResult editSave(@RequestParam("file") MultipartFile file, @RequestParam("userid")long userid,InspectionReform inspectionReform) throws IOException {
User user = getSysUser();
// 上传文件路径
String filePath = RuoYiConfig.getUploadPath();
// 上传并返回新文件名称
String fileName = FileUploadUtils.upload(filePath, file);
return toAjax(inspectionReformService.updateInspectionReform(inspectionReform));
}
show.html
<!DOCTYPE html>
<html lang="zh" xmlns:th="http://www.thymeleaf.org" xmlns:shiro="http://www.pollix.at/thymeleaf/shiro">
<head>
<th:block th:include="include :: header('整改任务列表')" />
</head>
<body class="gray-bg">
<div class="container-div">
<div class="row">
<div class="col-sm-12 search-collapse">
<form id="formId">
<div class="select-list">
<ul>
<li>
<label>创建人：</label>
<input type="text" name="reformCreateby"/>
</li>
<li>
<a class="btn btn-primary btn-rounded btn-sm" onclick="$.table.search()"><i class="fa fa-search"></i> 搜索</a>
<a class="btn btn-warning btn-rounded btn-sm" onclick="$.form.reset()"><i class="fa fa-refresh"></i> 重置</a>
</li>
</ul>
</div>
</form>
</div>
<div class="btn-group-sm" id="toolbar" role="group">
<!-- <a class="btn btn-success" onclick="$.operate.add()" shiro:hasPermission="model:reform:add">
<i class="fa fa-plus"></i> 添加
</a>-->
<a class="btn btn-primary single disabled" onclick="$.operate.edit()" shiro:hasPermission="model:reform:edit">
<i class="fa fa-edit"></i> 修改
</a>
<!--<a class="btn btn-danger multiple disabled" onclick="$.operate.removeAll()" shiro:hasPermission="model:reform:remove">
<i class="fa fa-remove"></i> 删除
</a>-->
<a class="btn btn-warning" onclick="$.table.exportExcel()" shiro:hasPermission="model:reform:export">
<i class="fa fa-download"></i> 导出
</a>
</div>
<div class="col-sm-12 select-table table-striped">
<table id="bootstrap-table"></table>
</div>
</div>
</div>
<th:block th:include="include :: footer" />
<script th:inline="javascript">
var editFlag = [[${@permission.hasPermi('model:reform:edit')}]];
var removeFlag = [[${@permission.hasPermi('model:reform:remove')}]];
var reformDeletedDatas = [[${@dict.getType('inspection_delete')}]];
var reformStatusDatas = [[${@dict.getType('reform_status')}]];
var prefix = ctx + "model/reform";
$(function() {
var options = {
url: prefix + "/list",
createUrl: prefix + "/add",
updateUrl: prefix + "/edit/{id}",
removeUrl: prefix + "/remove",
exportUrl: prefix + "/export",
modalName: "整改任务",
columns: [{
checkbox: true
},
{
field: 'reformImgpath',
title: '整改照片路径',
formatter:function (value,row,index) {
return $.table.imageView(value);
}
},
{
title: '操作',
align: 'center',
formatter: function(value, row, index) {
var actions = [];
actions.push('<a class="btn btn-success btn-xs ' + editFlag + '" href="javascript:void(0)" onclick="$.operate.edit(\'' + row.reformId + '\')"><i class="fa fa-edit"></i>编辑</a> ');
actions.push('<a class="btn btn-danger btn-xs ' + removeFlag + '" href="javascript:void(0)" onclick="$.operate.remove(\'' + row.reformId + '\')"><i class="fa fa-remove"></i>删除</a>');
return actions.join('');
}
}]
};
$.table.init(options);
});
</script>
</body>
</html> 
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