1、首先需要导入包
commons-fileupload.jar
commons-io.jar
如果使用maven的话
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.5</version>
</dependency>
2、在springMVC的配置文件中
<!-- 文件上传需要的bean -->
<
bean
id
=
"multipartResolver"
class
=
"org.springframework.web.multipart.commons.CommonsMultipartResolver"
>
<
property
name
=
" defaultEncoding"
value
=
"UTF-8"
></
property
>
</
bean
>
3、jsp中input框type是file，提交方式是post，enctype是multipart/form-data
<
form
action
=
"
${pageContext.request.contextPath }
/upload"
method
=
"post"
enctype
=
"multipart/form-data"
>
文件:
<
input
type
=
"file"
name
=
"file"
><
br
>
<
input
type
=
"submit"
value
=
"提交"
><
br
>
</
form
>
在注册时，可以使用Ajax异步上传图片
<
script
type
=
"text/javascript"
>
function
uploadpic(){
var
fdata =
new
FormData($(
"#ff"
)[0]);
$.ajax({
type:
"post"
,
url:
"${pageContext.request.contextPath }/file/upload"
,
data:fdata,
contentType:
false
,
//使用form指定的enctype属性
processData:
false
,
//默认为true，表示对提交的数据封装，当false时，不封装
dataType:
"json"
,
success:
function
(data){
if
(data!=
null
&& data.flag==
"true"
) {
var
name = data.fname;
$(
"#image"
).val(name);
alert(
"上传成功"
);
}
}
});
}
</
script
>
</
head
>
<
body
>
<
div
class
=
"easyui-panel"
title
=
"New Topic"
style
="
width
:
400px
"
>
<
div
style
="
padding
:
10px 60px 20px 60px
"
>
<
form
id
=
"ff"
method
=
"post"
action
=
"
${pageContext.request.contextPath }
/file/regist"
enctype
=
"multipart/form-data"
>
<
table
cellpadding
=
"5"
>
<
tr
>
<
td
>
用户名:
</
td
>
<
td
><
input
class
=
"easyui-textbox"
type
=
"text"
name
=
"userName"
data-options
=
"required:true"
></
input
></
td
>
</
tr
>
<
tr
>
<
td
>
生日:
</
td
>
<
td
><
input
class
=
"easyui-textbox"
type
=
"text"
name
=
"birthday"
data-options
=
"required:true"
></
input
></
td
>
</
tr
>
<
tr
>
<
td
>
性别:
</
td
>
<
td
><
input
type
=
"radio"
name
=
"sex"
value
=
"1"
>
男
<
input
type
=
"radio"
name
=
"sex"
value
=
"2"
>
女
<
td
>
</
tr
>
<
tr
>
<
td
>
头像:
</
td
>
<
td
>
<
input
id
=
"fileupload"
type
=
"file"
name
=
"file"
style
="
width
:
100%
"
>
<
input
type
=
"button"
onclick
=
"uploadpic()"
value
=
"上传"
>
<
input
id
=
"image"
name
=
"image"
type
=
"hidden"
>
</
td
>
</
tr
>
<
tr
>
<
td
>
地址:
</
td
>
<
td
><
input
class
=
"easyui-textbox"
name
=
"address"
data-options
=
"multiline:true"
style
="
height
:
60px
"
></
input
></
td
>
</
tr
>
<
tr
>
<
td
><
input
type
=
"submit"
value
=
"注册"
></
td
>
</
tr
>
</
table
>
</
form
>
</
div
>
</
div
>
4、后端控制器 controller
@
Controller
@
RequestMapping(
"file"
)
public
class
FileUpload {
@
Resource
private
MarketUserService
marketUserServiceImp
;
String
filePath
=
"E:/javaWeb课程/springMVC/WebContent/image"
;
@ResponseBody
@
RequestMapping(
"/upload"
)
public
Map<String,String> upload(MultipartFile
file
) {
Map<String,String>
map
=
new
HashMap<>();
try
{
//获取文件名
String
filename
=
file
.getOriginalFilename();
filename
= System.currentTimeMillis()+
filename
;
//解决文件名冲突
//得到存储地址
File
fil
=
new
File(
filePath
,
filename
);
if
(!
fil
.getParentFile().exists()) {
fil
.getParentFile().mkdir();
}
//存储图片
file
.transferTo(
fil
);
map
.put(
"fname"
,
filename
);
map
.put(
"flag"
,
"true"
);
}
catch
(IllegalStateException | IOException
e
) {
e
.printStackTrace();
map
.put(
"flag"
,
"false"
);
}
return
map
;
}
@
RequestMapping(value=
"regist"
,method=RequestMethod.
POST
)
public
String regist(MarketUser
user
) {
int
i
=
marketUserServiceImp
.addUser(
user
);
System.
out
.println(
i
);
return
"success"
;
}