Bootstrap的fileinput插件实现多文件上传的方法

Bootstrap 2020-08-19

*1.bootstrap-fileinput 插件git下载地址

https://github.com/kartik-v/bootstrap-fileinput.git

2.解决使用bootstrap-fileinput得到返回值

上传图片

?
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$( "#file-0a" ).fileinput({
uploadUrl : "/upload_img" , //上传图片的url
allowedFileExtensions : [ 'jpg' 'png' 'gif' ],
overwriteInitial : false maxFileSize : 1000,0)!important'>//上传文件最大的尺寸
maxFilesNum : 1,0)!important'>//上传最大的文件数量
initialCaption: "请上传商家logo" //文本框初始话value
//allowedFileTypes: ['image','video','flash'],
slugCallback : function (filename) {
return filename.replace( '(' '_' ).replace( ']' );
}
});

注意上传图片事件完之后，得到返回值写法

'#file-0a' ).on( 'fileuploaded' (event,data,previewId,index) {
var form = data.form,files = data.files,extra = data.extra,
response = data.response,reader = data.reader;
console.log(response); //打印出返回的json
console.log(response.paths); //打印出路径
2
<input id= "file-0a" class= "file" type= multiple
data-min-file-count= "1" name= "upload_logo" >

其中data-min-file-count=”1”是指文件上传最低数量

3.服务端代码

采用了spring自带插件上传，框架为Springmvc

Bean

import java.util.List;
public class Picture {
private List<String> paths;
public List<String> getPaths()
{
paths;
}
public void setPaths(List<String> paths)
{
this .paths = paths;
}
}

Controller

@ResponseBody
@RequestMapping(value= "upload_img" public Picture uploadImage(@RequestParam multipartfile[] upload_logo) throws IOException{
log.info( "上传图片" );
Picture pic = new Picture();
List<String> paths = ArrayList<String>();
String dir = UploadUtil.getFolder();
for (multipartfile myfile : upload_logo){
if (myfile.isEmpty()){
"文件未上传" );
} else {
"文件长度: " + myfile.getSize());
"文件类型: " + myfile.getContentType());
"文件名称: " + myfile.getName());
"文件原名: " + myfile.getoriginalFilename());
"========================================" );
//上传文件 返回路径
String path = UploadUtil.writeFile(myfile.getoriginalFilename(),dir,myfile.getInputStream());
"文件路径:" +path);
paths.add(path);
}
}
pic.setPaths(paths);
pic;
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private static final Logger log = LoggerFactory.getLogger(UploadUtil.class);
private UploadUtil() {
}
private static SimpleDateFormat fullSdf = SimpleDateFormat( "yyyyMMddHHmmssSSS" private static SimpleDateFormat folder = SimpleDateFormat(
"yyyy" + File.separator + "MM" "dd" );
/**
* 返回yyyy File.separator MM File.separator dd格式的字符串
*
* @return
*/
public static String getFolder() {
folder.format( Date());
}
/**
* 文件上传
*
* @param srcName
* 原文件名
* @param dirName
* 目录名
* @param input
* 要保存的输入流
* @return 返回要保存到数据库中的路径
*/
public static String writeFile(String srcName,String dirName,InputStream input) throws IOException {
log.info(srcName);
// 取出上传的目录，此目录是tomcat的server.xml中配置的虚拟目录
String uploadDir = ContextUtil.getSysProp( "upload_dir" ); //设置你上传路径
// 取出虚拟目录的访问路径
String virtualDir = ContextUtil.getSysProp( "virtual_dir" //设置你虚拟目录访问路径
// 重命名文件
( null != srcName) {
srcName = srcName.substring(srcName.indexOf( "." ));
} {
srcName = ".jpg" ;
}
String filename = "" ;
// 得到要上传的文件路径
filename = uploadDir + File.separator + dirName + File.separator + fullSdf.format( Date()) + srcName;
// 得到将要保存到数据中的路径
String savePath = filename.replace(uploadDir,monospace!important; min-height:auto!important'>);
savePath = virtualDir + savePath.replace( "\\" "/" );
File file = File(filename);
(!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
FileOutputStream fos = FileOutputStream(file);
// 一次30kb
byte[] readBuff = byte[1024 * 30];
int count = -1;
while ((count = input.read(readBuff,readBuff.length)) != -1) {
fos.write(readBuff,count);
}
fos.flush();
fos.close();
input.close();
savePath;