文件上传

bailangriver 2019-07-01

[TOC]

示例一:

【1】页面js:

/*
上传附件
docObj:文件对象
appid:cid
apptypeid:1、blog 2、
busitype:100——代表附件
*/
function uploadAttachment(docObj){
    var appid = $("#appid").val();
    var files =docObj.files;
    var formData = new FormData();//通过对象传输到后台
    formData.append("appid",appid);//用于sysfile插入数据的appid
    for (var i = files.length - 1; i >= 0; i--) {
        formData.append("files[]",files[i]);
    }
    $.ajax({
        data : formData,
        type : "POST",
        url : "/common/xxx/upload",
        cache : false,
        processData: false,                // jQuery不要去处理发送的数据
        contentType: false,                // jQuery不要去设置Content-Type请求头
        dataType: 'JSON',
        success: function(data) {//data是返回的hash,key之类的值,key是定义的文件名
            //查询
            $('#attachment').bootstrapTable('refresh');
            attachment(appid);
        },
        error:function(){
            toastr.error("上传失败");
        }
    });
}

【2】spring mvc后台接收多文件:

//下面新增自定义方法
@ResponseBody
@PostMapping("/upload")
R upload(@RequestParam("files[]") MultipartFile[] files,@RequestParam("appid") String appid) throws IOException, Exception {
    //多个附件上传
    for (int i = 0; i < files.length; i++) {
        System.out.println(i);
        String fname = files[i].getOriginalFilename();
//                String fileName = FileUtil.renameToUUID(fname);//换成uuid——也是唯一,好找图片
        String uuid = UUID.randomUUID().toString().replace("-", "");
        String fileType = fname.substring(fname.lastIndexOf(".") + 1, fname.length()).toLowerCase();
        String fileName = uuid+"."+fileType;//cf6ec8ccb62e451e8d5f27dab6bfeb3f.png
        FileUtil.uploadFile(files[i].getBytes(),tuodataConfig.getUploadPublicPath()+"blog/", fileName);
        FileDO fileDo= insertFile(appid,uuid,0,fname,fileName,fileType);
    }
    return R.ok();
}

示例二:

layui图片上传

【1】单张

html:
<body>
    <input type="hidden" name="rotationChartId" id="rotationChartId" value="#(rotationChart.id)" />
    <input type="hidden" name="mToken" value="#(mToken)" />

    <div class="layui-form-item">
        <label class="layui-form-label">轮播图片</label>
        <div class="layui-input-block">
            <input type="hidden" name="image" id="image" />
            <button type="button" class="layui-btn layui-btn-normal" id="chooseFile">选择文件</button>
            <div class="fileinput-new thumbnail" style="max-width: 200px; max-height: 150px;">
                <img #if(rotationChart.value==null) src="#(ctx)/assets/img/no.png" #else src="#(ctx)#(rotationChart.value)" #end id="demo1" />
            </div>
        </div>
    </div>
</body>


js:
新增的js脚本:
<script>
    layui.config({
        base: '#(ctx)/assets/layuiadmin/' //静态资源所在路径
    }).extend({
        index: 'lib/index' //主入口模块
    }).use(['index', 'form', 'laydate', 'upload'], function() {
        var $ = layui.$,
            admin = layui.admin,
            element = layui.element,
            layer = layui.layer,
            laydate = layui.laydate,
            form = layui.form,
            upload = layui.upload;

        // layui图片上传(单张)
        upload.render({
            elem: '#chooseFile',
            url: '#(curl)/rotationChartSave',
            auto: false,
            bindAction: '#submit', // 触发事件
            headers: {
                sessionId: '#(ac.sessionId)',
                menuId: '#(menuId)'
            },
            choose: function(obj) { //选择文件的回调,obj为选中的文件
                //将每次选择的文件追加到文件队列
                var files = obj.pushFile();

                //预览选中的文件(本地文件)
                obj.preview(function(index, file, result) {
                    $('#demo1').attr('src', result);
                });
            },
            done: function(data) {
                if(data.code == 1) {
                    window.location.reload();
                } else if(data.code == 2) {
                    location.href = '#(ctx)/system/toLogin';
                }
                parent.layer.msg(data.desc, {
                    offset: '80%'
                });
                layer.closeAll('loading');
            }
        });
    });
</script>

编辑的js脚本:
<script>
    layui.config({
        base: '#(ctx)/assets/layuiadmin/' //静态资源所在路径
    }).extend({
        index: 'lib/index' //主入口模块
    }).use(['index', 'form', 'laydate', 'upload'], function() {
        var $ = layui.$,
            admin = layui.admin,
            element = layui.element,
            layer = layui.layer,
            laydate = layui.laydate,
            form = layui.form,
            upload = layui.upload;
        
        // 通过formData进行传递数据
        var formData = new FormData($("#form")[0]);
        
        // layui图片上传(单张)
        upload.render({
            elem: '#chooseFile',
            url: '#(curl)/rotationChartUpdate',
            auto: false,
            bindAction: '#submit',
            data: {"rotationChartId":formData.get("rotationChartId")},// 通过属性进行获取值
            headers: {
                sessionId: '#(ac.sessionId)',
                menuId: '#(menuId)'
            },
            choose: function(obj) { //选择文件的回调,obj为选中的文件
                //将每次选择的文件追加到文件队列
                var files = obj.pushFile();

                //预览选中的文件(本地文件)
                obj.preview(function(index, file, result) {
                    $('#demo1').attr('src', result);
                });
            },
            done: function(data) {
                if(data.code == 1) {
                    window.location.reload();
                } else if(data.code == 2) {
                    location.href = '#(ctx)/system/toLogin';
                }
                parent.layer.msg(data.desc, {
                    offset: '80%'
                });
                layer.closeAll('loading');
            }
        });
    });
</script>

后台代码:
/**
 * 轮播图保存 
 */
@Before(value = { JMSystemApiInterceptor.class })
public void rotationChartSave() {
    String image = JMUploadKit.fileUpload(this, "file", "rotationChart");

    Configure rotationChart = new Configure();
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    rotationChart.setValue2(sdf.format(new Date()));
    boolean result = false;
    if (image != null) {
        rotationChart.setName("rotationChart");
        rotationChart.setValue(image);
        result = configureDao.save(rotationChart);
    }
    if (result) {
        // 给type跟desc赋值
        Configure rotationChart1 = configureDao.get(false);
        rotationChart.setType(rotationChart1.getType() + 1);// 获取最后一个type
        rotationChart.setDesc("轮播图-" + (rotationChart1.getType() + 1));
        rotationChart.update();
        JMResult.success(this, "新增成功");
    } else {
        JMResult.fail(this, "新增失败");
    } 
}
/**
 * 轮播图更新 
 */
@Before(value = { JMSystemApiInterceptor.class })
public void rotationChartUpdate() {
    String image = JMUploadKit.fileUpload(this, "file", "rotationChart");
    Integer rotationChartId = getParaToInt("rotationChartId",null);
    Configure rotationChart = new Configure();
    
    Configure rotationChart1 = configureDao.getById(rotationChartId);
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    boolean result = false;// 标识是否报错
    if (image != null) {
        if (rotationChart1.getValue() != null)
            ToolUpload.deleteFile(rotationChart1.getValue());
        rotationChart.setId(rotationChartId);
        rotationChart.setValue(image);
        rotationChart.setValue2(sdf.format(new Date()));// 记录更新时间
        result = configureDao.update(rotationChart);
    }
    if (result) {
        JMResult.success(this, "修改成功");
    } else {
        JMResult.fail(this, "修改失败");
    }
}

【2】多张

参考文章路径:https://www.layui.com/demo/up...

示例三

【1】oss上传图片

<c:set var="oss" value="https://wenbang.oss-cn-hangzhou.aliyuncs.com" />

<div class="form-group">
        <label class="control-label col-md-3">引导页</label>
        <div class="col-md-6">
            <div class="fileinput fileinput-new" data-provides="fileinput">
                                           <!--回显数据库图片-->
                <div class="fileinput-new thumbnail" style="max-width: 200px; max-height: 150px;">
                    <img src="
                        <c:if test="${ydy.value == null}">${ctx}/assets/global/img/no.png</c:if>
                        <c:if test="${ydy.value != null}">${oss}${ydy.value}</c:if>" 
                        alt="" />
                </div>
                                           <!--选择本地图片后回显-->
                <div class="fileinput-preview fileinput-exists thumbnail" style="max-width: 200px; max-height: 150px;"></div>
                <div>
                    <span class="btn default btn-file"> 
                        <span class="fileinput-new"> 选择图片 </span> 
                        <span class="fileinput-exists"> 改变 </span> 
                        <input type="file" name="image">
                    </span> 
                    <a href="javascript:;" class="btn red fileinput-exists" data-dismiss="fileinput"> 删除 </a>
                </div>
            </div>
            <div class="clearfix margin-top-10">
                <span class="label label-danger">NOTE!</span> 兼容 IE10+, FF3.6+, Safari6.0+, Chrome6.0+ and Opera11.1+.以上的浏览器
            </div>
        </div>
    </div>
后台代码:
String ossFileUpload = ToolUpload.OSSFileUpload(this, "image", "configure");
地址:wenbang/upload/configure/20190116/xxx.jpg
page 页面显示缩略图:
<td>
    <img src="<c:if test="${obj.value == null}">${ctx}/assets/global/img/no.png</c:if><c:if test="${obj.value != null}">${oss}${obj.value}</c:if>" style="max-width: 26px; max-height: 22px;">
</td>

相关推荐