If you want to display and modify the pictures in the management system

1: Display of pictures

add on list page

 {
    
    
                    field: 'cityImg',
                    title: '城市图片',
                    formatter: function (value, row, index) {
    
    
                        console.log("aa"+value);
                        return '<img src="http://localhost:8080/ShadowLine/'+value+'" width="150" height="100">';
                    }

                },

Note that my path is a network path, and changing it to the local absolute path did not succeed.

2: Uploading pictures

When generating the code, select the upload control in the picture column
insert image description here
Code:

 <div class="form-group">
            <label class="col-sm-3 control-label">电影图片：</label>
            <div class="col-sm-8">
                <input type="hidden" name="filmImg" th:field="*{filmImg}">
                <div class="file-loading">
                    <input class="form-control file-upload" id="filmImg" name="file" type="file">
                </div>
            </div>
        </div>

 $(".file-upload").each(function (i) {
    
    
        var val = $("input[name='" + this.id + "']").val()
        $(this).fileinput({
    
    
            'uploadUrl': ctx + 'common/upload1',
            initialPreviewAsData: true,
            initialPreview: [val],
            maxFileCount: 1,
            autoReplace: true
        }).on('fileuploaded', function (event, data, previewId, index) {
    
    
            $("input[name='" + event.currentTarget.id + "']").val(data.response.url)
        }).on('fileremoved', function (event, id, index) {
    
    
            $("input[name='" + event.currentTarget.id + "']").val('')
        })
        $(this).fileinput('_initFileActions');
    });

If this framework comes with a file upload method.
inside CommonController

/**
* Common upload request
/
@PostMapping("/common/upload")
@ResponseBody
public AjaxResult uploadFile(MultipartFile file) throws Exception
{ try { /

*
* This place is only responsible for uploading and not responsible for saving and saving is in your specific business All i you test in this location is useless
*/
// upload file path
String filePath = "D:\Environment\workspace\ShadowLine\WebContent\imgs\city\cityImg\";
System.out.println("Upload The path of the image is: "+filePath);
// Upload and return the new file name
String fileName=FileUploadUtils.upload(filePath, file);

        System.out.println("上传图片的名字是:"+fileName);
        String url = "imgs/city/cityImg/"+fileName;
        System.out.println("url是"+url);//这个地方是存在数据库里图片的那个字段
        AjaxResult ajax = AjaxResult.success();
        ajax.put("fileName", fileName);
        ajax.put("url", url);
        return ajax;
    }
    catch (Exception e)
    {
        return AjaxResult.error(e.getMessage());
    }
}

Effect picture:
insert image description here