文件上传功能是Web开中，不可或缺的功能。
本博文主要讲解在Spring MVC使用ExtJS进行文件的上传。
/mzsxBlog/src/config/springmvc.xml
这是SpringMVC的配置文件，文件上传的配置如下：
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<!-- 文件上传 -->
<
bean
id
=
"multipartResolver"
class
=
"org.springframework.web.multipart.commons.CommonsMultipartResolver"
>
<
property
name
=
"maxUploadSize"
value
=
"10240000"
/>
<
property
name
=
"resolveLazily"
value
=
"true"
/>
<
property
name
=
"maxInMemorySize"
value
=
"4096"
/>
</
bean
>
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前台JSP如下：
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<%@ page language="java" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<
html
>
<
head
>
<%
String contextPath = request.getContextPath();
%>
<
title
>应用管理</
title
>
<%@ include file="/js/_scripts.jsp"%>
<
style
type
=
"text/css"
> .textfield-red { color: #FF0000; } </
style
>
<!-- 字体红色的样式-->
<
STYLE
TYPE
=
"text/css"
>
#content {
width: 100%;
height: 100%;
}
.add {
background-image: url(images/icon/add.gif) !important;
}
.update {
background-image: url(images/icon/update.gif) !important;
}
.delete {
background-image: url(images/icon/delete.gif) !important;
}
.assign {
background-image: url(images/icon/list-items.gif) !important;
}
.ux-combo-selectall{
padding:3px;
}
.ux-combo-selectall-icon-checked{
transparent url(ext-3.1.0/resources/images/default/menu/checked.gif);
}
.ux-combo-selectall-icon-unchecked {
transparent url(ext-3.1.0/resources/images/default/menu/unchecked.gif);
}
.ux-combo-selectall-icon {
text-indent:1.8em;
background-position: 3px 2px ! important;
background-repeat:no-repeat ! important;
height:22px;
line-height:20px;
font-size:12px;
font-weight:bold;
-moz-user-select:none;
}
.ux-lovcombo-icon {
width:16px;
height:16px;
float:left;
background-position: -1px -1px ! important;
background-repeat:no-repeat ! important;
}
.ux-lovcombo-icon-checked {
transparent url(ext-3.1.0/resources/images/default/menu/checked.gif);
}
.ux-lovcombo-icon-unchecked {
transparent url(ext-3.1.0/resources/images/default/menu/unchecked.gif);
}
/* IE patch */
.ext-ie .ux-lovcombo-item-text {
position:absolute;
left:16px;
top:3px;
}
.ext-ie .ux-lovcombo-icon {
float:none;
}
.ext-ie .x-combo-list-item {
position:relative;
}
</
STYLE
>
<
link
href
=
"ext-3.1.0/ux/css/Spinner.css"
type
=
"text/css"
rel
=
"stylesheet"
/>
<
script
type
=
"text/javascript"
src
=
"ext-3.1.0/ux/DateTime.js"
></
script
>
<
script
type
=
"text/javascript"
src
=
"ext-3.1.0/ux/SpinnerField.js"
></
script
>
<
script
type
=
"text/javascript"
src
=
"ext-3.1.0/ux/Spinner.js"
></
script
>
<
script
type
=
"text/javascript"
src
=
"js/Ext.ux.form.LovCombo.js"
></
script
>
<
script
type
=
"text/javascript"
src
=
"ext-3.1.0/ux/fileuploadfield/FileUploadField.js"
></
script
>
<
script
type
=
"text/javascript"
>
Ext.onReady(function() {
Ext.QuickTips.init();
var excelUpload = new Ext.form.TextField({
id:'upload',
anchor:'90%',
height:30,
width:350,
name:'userfile',
inputType:'file',
fieldLabel:'文件选择'
});
var formPanel = new Ext.form.FormPanel({
labelWidth:80,
bodyStyle:'padding:5 5 5 5',
height:515,
width:200,
frame:true,
fileUpload:true,
items:[excelUpload]
});
// 定义按钮
var upLoadFile = new Ext.Toolbar.Button({
text:'上传'
});
// 上传数据功能
var up = function(bt) {
var filepath = Ext.getCmp('upload').getRawValue();// 上传文件名称的路径
var suffix = filepath.substring(filepath.lastIndexOf('.') + 1, filepath.length);
if (filepath == ""){
Ext.Msg.show({title:'提示',msg:'请选择文件!',buttons:Ext.Msg.OK,icon:Ext.MessageBox.INFOR});
return;
} else {
var array = new Array();
array = filepath.split("\\");
var length = array.length;
var fileName = "";
var index = 0;
for (index = 0; index <
length
; index++) {
if (fileName == "") {
fileName
=
array
[index];
} else {
fileName
= fileName + "/" + array[index];
}
}
formPanel.getForm().submit({
url:'file.sp?
method
=
upload
',
method:'POST',
waitMsg:'数据上传中, 请稍等...',
success:function(form, action) {
if(action.result.success == true){
Ext.MessageBox.alert("提示信息","文件上传成功！！！");
}
},
failure : function(form, action) {
Ext.MessageBox.alert("提示信息","请求失败,文件上传失败");
}
});
}
}
// 添加按钮的响应事件
upLoadFile.addListener('click', up, false);
var
window
=
new
Ext.Window({
title:'上传文件',
width:500,
height:200,
minWidth:500,
minHeight:200,
layout:'fit',
plain:true,
modal:true,
//closeAction:'hide',
bodyStyle:'padding:5px;',
buttonAlign:'center',
items:formPanel,
buttons:[upLoadFile]
});
window.show();
});
</script>
</
head
>
<
body
>
<
div
id
=
"Layer1"
style
=
"position:absolute; width:100%; height:100%; z-index:-1"
>
<
img
src
=
"images/file.jpg"
height
=
"100%"
width
=
"100%"
/>
<
div
id
=
"form"
></
div
>
</
div
>
</
body
>
</
html
>
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后台的代码如下：
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package
com.mzsx.flie.contorller;
import
java.io.File;
import
java.io.IOException;
import
java.text.SimpleDateFormat;
import
java.util.Date;
import
java.util.HashMap;
import
java.util.Map;
import
javax.servlet.http.HttpServletRequest;
import
javax.servlet.http.HttpServletResponse;
import
net.sf.json.JSONObject;
import
org.apache.log4j.Logger;
import
org.codehaus.jackson.map.ObjectMapper;
import
org.springframework.beans.factory.annotation.Autowired;
import
org.springframework.http.HttpHeaders;
import
org.springframework.http.HttpStatus;
import
org.springframework.http.MediaType;
import
org.springframework.http.ResponseEntity;
import
org.springframework.stereotype.Controller;
import
org.springframework.web.bind.annotation.RequestMapping;
import
org.springframework.web.bind.annotation.RequestMethod;
import
org.springframework.web.multipart.MultipartFile;
import
org.springframework.web.multipart.MultipartHttpServletRequest;
import
org.springframework.web.servlet.ModelAndView;
import
com.mzsx.admin.contorller.AdminContorller;
import
com.mzsx.flie.service.FileService;
import
com.mzsx.model.Admin;
import
com.mzsx.model.FileLoading;
@Controller
@RequestMapping
(
"file.sp"
)
public
class
FileContorller {
@Autowired
private
FileService fileService;
private
static
Logger logger = Logger.getLogger(AdminContorller.
class
);
@RequestMapping
(params =
"method=upload"
, method = RequestMethod.POST)
public
void
addFileUp(HttpServletRequest request,HttpServletResponse response) {
Map<String, Object> map =
new
HashMap<String, Object>();
FileLoading fileUp =
new
FileLoading();
//获取用户
Admin admin = (Admin) request.getSession().getAttribute(
"admin"
);
int
userid = admin.getId();
//用户ID
Date createdTime =
new
Date();
//使用MultipartHttpServletRequest包装文件数据
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
//目录命名格式如：*files2013-03-05-22
SimpleDateFormat dateformat =
new
SimpleDateFormat(
"yyyy-MM-dd"
);
//构建图片保存的目录
String logoPathDir =
"/upload/file"
+ dateformat.format(
new
Date());
//得到图片保存目录的真实路径
String logoRealPathDir = request.getSession().getServletContext().getRealPath(logoPathDir);
//根据真实路径创建目录
File logoSaveFile =
new
File(logoRealPathDir);
if
(!logoSaveFile.exists())
logoSaveFile.mkdirs();
//页面控件的文件流
MultipartFile multipartFile = multipartRequest.getFile(
"userfile"
);
// 获取文件名/
String filename = multipartFile.getOriginalFilename();
fileUp.setFileOldName(filename);
long
time = createdTime.getTime();
// 时间
int
index = filename.lastIndexOf(
"."
);
if
(index == -
1
) {
filename = filename +
"-"
+ time;
// 文件名
logger.info(
"文件名："
+filename);
}
else
{
filename = filename.substring(
0
, index) +
"-"
+ time
+ filename.substring(index);
logger.info(
"文件名："
+filename);
}
//设置属性值
fileUp.setUserid(userid);
fileUp.setFileNewName(filename);
fileUp.setPath(logoRealPathDir);
fileUp.setStatus(
1
);
//拼成完整的文件保存路径加文件
String fileName = logoRealPathDir + File.separator + filename;
File file =
new
File(fileName);
try
{
//保存上传文件
multipartFile.transferTo(file);
logger.info(filename+
"上传成功！！！"
);
try
{
//插入数据库
fileService.insertFile(fileUp);
map.put(
"success"
,
"true"
);
}
catch
(Exception e) {
// TODO: handle exception
map.put(
"success"
,
"false"
);
logger.error(
"异常出现："
+e);
}
/*String json = "{success: true}";
response.setContentType("text/html; charset=UTF-8");
response.getWriter().write(json);
response.flushBuffer();*/
/*Map<String, Object> result = new HashMap<String, Object>(0);
result.put("success", true);
response.setContentType("text/html");
ObjectMapper mapper = new ObjectMapper();
mapper.writeValue(response.getOutputStream(), result);*/
response.setContentType("text/html;charset=UTF-8");
response.getWriter().write("{success:true}");
} catch (IllegalStateException e) {
logger.error("异常出现："+e);
} catch (IOException e) {
logger.error("异常出现："+e);
}
//response.setContentType("text/html; charset=UTF-8");
//response.setContentType("application/json; charset=utf-8");
//return new ModelAndView("jsonView", map);
/*String json="{success : true}";
HttpHeaders reHeaders=new HttpHeaders();
reHeaders.setContentType(MediaType.TEXT_HTML);
return new ResponseEntity<String>(json,reHeaders,HttpStatus.OK);*/
}
}
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效果图：
后台效果图：
本文转自 梦朝思夕 51CTO博客，原文链接:http://blog.51cto.com/qiangmzsx/1199686
