只是个demo，需要数据校验，流程是通的
配置上传文件的解析器
前端代码;
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>文件上传</title>
<style>
.img{
width:150px;
height:90px;
}
</style>
</head>
<body>
<form enctype="multipart/form-data" return:false;>
<input type="text" name='goodsName'>
<input type="file" id="loadfile" class="imgInput" name="upfile" value="上传" multiple="multiple"/><br>
<!--<img src="" class="img">
<img src="" class="img img1">-->
<div id="imgCont"></div>
</form>
<button id="sub">提交</button>
<script type="text/javascript" src="js/jquery.min.js" ></script>
<script>
var curFiles=[];
$(function(){
$(".imgInput").change(function(){
console.log($(this));
// console.log(URL.createObjectURL($(this)[0].files.length));
console.log(this.files.length);
var files=this.files;
if(files && files.length){
Array.prototype.push.apply(curFiles,files);
}
console.log(curFiles);
var len=this.files.length;
var html="";
for(var i=0;i<len;i++){
html+='<img src="'+URL.createObjectURL($(this)[0].files[i])+'"'+
'class="img"><span class="delImg" index="'+i+'">删除</span>'
}
$("#imgCont").html(html);
demo();
});
})
function demo(){
$(".delImg").click(function(){
var index=$(this).attr('index');
delete curFiles[index];
console.log(curFiles);
$(this).prev().remove();
$(this).remove();
})
}
</script>
<script>
$(function(){
$("#sub").click(function(){
var data = new FormData($('#form')[0]);
for(var i=0;i<curFiles.length;i++){
data.append('files',curFiles[i]);
}
console.log('woshidata'+data);
$.ajax({
url:'morePic',
method:'post',
data:data,
processData:false,
contentType:false,
success:function(data){
}
});
});
})
</script>
<br>
</body>
</html>
后台代码
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
@MultipartConfig
@Controller
public class TestController {
@ResponseBody
@RequestMapping("morePic")
public void morePic(MultipartFile[] files,HttpServletRequest request) {
int i=0;
for(MultipartFile file: files) {
i++;
String x=file.getOriginalFilename();
System.out.println(x);
}
System.out.println(i);
}
}
debug调试
可以看到前端选了三个文件，我删除后再提交后台就只接收到了两个文件，于是关于ajax提交图片上传就成功了
