Struts2文件上传 [英] Struts2 File Upload
问题描述
答案如下：
在你的maven POM文件中包含这些依赖：
< dependency>
< groupId> com.jgeppert.struts2.jquery< / groupId>
< artifactId> struts2-jquery< / artifactId>
< version> 3.2.0< / version>
< type> pom< / type>
< / dependency>
<依赖>
< groupId> com.googlecode.struts2scopeplugin< / groupId>
< artifactId> struts2-scope-plugin< / artifactId>
< version> 1.0.4< / version>
< / dependency>
我们创建一个类来准备表单，如下所示：
pre $ public $ PrepareUpload extends ActionSupport {
@In（scope = ScopeType.CONVERSATION）
@Out（scope = ScopeType.CONVERSATION）
私人列表< File> fileUploadi = new ArrayList< File>（）;
$ b @In（scope = ScopeType.CONVERSATION）
@Out（scope = ScopeType.CONVERSATION）
private List< String> fileUploadContentTypei = new ArrayList< String>（）;
$ b @In（scope = ScopeType.CONVERSATION）
@Out（scope = ScopeType.CONVERSATION）
private List< String> fileUploadFileNamei = new ArrayList< String>（）;
@Action（value =/ prepareupload，results = {
@Result（location =upload.jsp，name =success）
}）
@End
public String execute（）抛出异常
{
return SUCCESS;
}
public List< File> getFileUploadi（）{
return fileUploadi;
}
public void setFileUploadi（List< File> fileUploadi）{
this.fileUploadi = fileUploadi;
}
public List< String> getFileUploadContentTypei（）{
return fileUploadContentTypei;
public void setFileUploadContentTypei（List< String> fileUploadContentTypei）{
this.fileUploadContentTypei = fileUploadContentTypei;
}
public List< String> getFileUploadFileNamei（）{
return fileUploadFileNamei;
public void setFileUploadFileNamei（List< String> fileUploadFileNamei）{
this.fileUploadFileNamei = fileUploadFileNamei;
$ b $ / code $ / pre
列表并处理ajax调用，如下所示：
public class UploadAction extends ActionSupport {
private static final long serialVersionUID = 7968544374444173511L;
private static final Log log = LogFactory.getLog（UploadAction.class）;
private String echo;
@In（scope = ScopeType.CONVERSATION）
@Out（scope = ScopeType.CONVERSATION）
private List< File> fileUploadi = new ArrayList< File>（）;
私人列表< File> fileUpload = new ArrayList< File>（）;
@In（scope = ScopeType.CONVERSATION）
@Out（scope = ScopeType.CONVERSATION）
private List< String> fileUploadContentTypei = new ArrayList< String>（）;
私人清单< String> fileUploadContentType = new ArrayList< String>（）;
@In（scope = ScopeType.CONVERSATION）
@Out（scope = ScopeType.CONVERSATION）
private List< String> fileUploadFileNamei = new ArrayList< String>（）;
私人清单< String> fileUploadFileName = new ArrayList< String>（）;
@Action（value =/ uploada，results = {
@Result（location =simpleecho.jsp，name =success）
}）
@Begin
public String execute（）throws Exception
{
fileUploadi.addAll（fileUpload）;
fileUploadFileNamei.addAll（fileUploadFileName）;
fileUploadContentTypei.addAll（fileUploadContentType）;
for（int i = 0; i< fileUploadFileNamei.size（）; i ++）
{
if（echo == null）
echo = fileUploadFileNamei.get（i） ;
else
echo + =< br> + fileUploadFileNamei.get（i）;
log.info（echo）;
}
返回SUCCESS;
}
public String getEcho（）
{
return echo;
}
公共列表< File> getFileUpload（）{
return fileUpload;
}
public void setFileUpload（List< File> fileUpload）{
this.fileUpload = fileUpload;
}
public List< String> getFileUploadContentType（）{
return fileUploadContentType;
}
public void setFileUploadContentType（List< String> fileUploadContentType）{
this.fileUploadContentType = fileUploadContentType;
}
public List< String> getFileUploadFileName（）{
return fileUploadFileName;
}
public void setFileUploadFileName（List< String> fileUploadFileName）{
this.fileUploadFileName = fileUploadFileName;
}
public List< File> getFileUploadi（）{
return fileUploadi;
}
public void setFileUploadi（List< File> fileUploadi）{
this.fileUploadi = fileUploadi;
}
public List< String> getFileUploadContentTypei（）{
return fileUploadContentTypei;
public void setFileUploadContentTypei（List< String> fileUploadContentTypei）{
this.fileUploadContentTypei = fileUploadContentTypei;
}
public List< String> getFileUploadFileNamei（）{
return fileUploadFileNamei;
public void setFileUploadFileNamei（List< String> fileUploadFileNamei）{
this.fileUploadFileNamei = fileUploadFileNamei;
}
$ b}
最后jsp应该是这样的：
$ p $ lt; code><％@ taglib prefix =suri = / struts-tags％>
<％@ taglib prefix =sjuri =/ struts-jquery-tags％>
< html>
< head>
< sj：head jqueryui =truedefaultLoadingText =Please wait .../>
< s：head />
< / head>
< body>
< h1>档案上载：< / h1>
< s：form action =uploada
method =POSTenctype =multipart / form-datatheme =xhtml>
< s：file label =File：name =fileUploadsize =40/>
< div id =result>在下面添加文件：< / div>
< sj：submit
targets =result
button =true
validate =true
value =Add File
indicator =indicator
parentTheme =xhtml
/>
< sj：submit
button =true
validate =true
value =Submit
indicator =indicator
parentTheme =xhtml
/>
< / s：form>
< / body>
< / html>
I want to upload multiple files in one form and that number of files is varying from user to another, ex. a user may upload 2 files and another user could upload 12 files. I want to know how could I create a loop or something in the jsp struts2 form such that when a user uploads a file it adds its name to a list and he/she could upload another file and be added to the list and so on.
I implemented this by using two struts2 plugin which are, Struts2 JQuery Plugin and Struts2 Scope Plugin
The answer is as following:
include those dependencies in your maven POM file:
<dependency>
<groupId>com.jgeppert.struts2.jquery</groupId>
<artifactId>struts2-jquery</artifactId>
<version>3.2.0</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>com.googlecode.struts2scopeplugin</groupId>
<artifactId>struts2-scope-plugin</artifactId>
<version>1.0.4</version>
</dependency>
and we create a class to prepare the form as follows:
public class PrepareUpload extends ActionSupport{
@In (scope=ScopeType.CONVERSATION)
@Out (scope=ScopeType.CONVERSATION)
private List<File> fileUploadi = new ArrayList<File>();
@In (scope=ScopeType.CONVERSATION)
@Out (scope=ScopeType.CONVERSATION)
private List<String> fileUploadContentTypei = new ArrayList<String>();
@In (scope=ScopeType.CONVERSATION)
@Out (scope=ScopeType.CONVERSATION)
private List<String> fileUploadFileNamei = new ArrayList<String>();
@Action(value = "/prepareupload", results = {
@Result(location = "upload.jsp", name = "success")
})
@End
public String execute() throws Exception
{
return SUCCESS;
}
public List<File> getFileUploadi() {
return fileUploadi;
}
public void setFileUploadi(List<File> fileUploadi) {
this.fileUploadi = fileUploadi;
}
public List<String> getFileUploadContentTypei() {
return fileUploadContentTypei;
}
public void setFileUploadContentTypei(List<String> fileUploadContentTypei) {
this.fileUploadContentTypei = fileUploadContentTypei;
}
public List<String> getFileUploadFileNamei() {
return fileUploadFileNamei;
}
public void setFileUploadFileNamei(List<String> fileUploadFileNamei) {
this.fileUploadFileNamei = fileUploadFileNamei;
}
}
and a class for the add to list and to handle ajax call as follows:
public class UploadAction extends ActionSupport {
private static final long serialVersionUID = 7968544374444173511L;
private static final Log log = LogFactory.getLog(UploadAction.class);
private String echo;
@In (scope=ScopeType.CONVERSATION)
@Out (scope=ScopeType.CONVERSATION)
private List<File> fileUploadi = new ArrayList<File>();
private List<File> fileUpload = new ArrayList<File>();
@In (scope=ScopeType.CONVERSATION)
@Out (scope=ScopeType.CONVERSATION)
private List<String> fileUploadContentTypei = new ArrayList<String>();
private List<String> fileUploadContentType = new ArrayList<String>();
@In (scope=ScopeType.CONVERSATION)
@Out (scope=ScopeType.CONVERSATION)
private List<String> fileUploadFileNamei = new ArrayList<String>();
private List<String> fileUploadFileName = new ArrayList<String>();
@Action(value = "/uploada", results = {
@Result(location = "simpleecho.jsp", name = "success")
})
@Begin
public String execute() throws Exception
{
fileUploadi.addAll( fileUpload);
fileUploadFileNamei.addAll(fileUploadFileName);
fileUploadContentTypei.addAll(fileUploadContentType);
for (int i = 0; i < fileUploadFileNamei.size(); i++)
{
if (echo == null)
echo = fileUploadFileNamei.get(i);
else
echo += "<br>" + fileUploadFileNamei.get(i);
log.info(echo);
}
return SUCCESS;
}
public String getEcho()
{
return echo;
}
public List<File> getFileUpload() {
return fileUpload;
}
public void setFileUpload(List<File> fileUpload) {
this.fileUpload = fileUpload;
}
public List<String> getFileUploadContentType() {
return fileUploadContentType;
}
public void setFileUploadContentType(List<String> fileUploadContentType) {
this.fileUploadContentType = fileUploadContentType;
}
public List<String> getFileUploadFileName() {
return fileUploadFileName;
}
public void setFileUploadFileName(List<String> fileUploadFileName) {
this.fileUploadFileName = fileUploadFileName;
}
public List<File> getFileUploadi() {
return fileUploadi;
}
public void setFileUploadi(List<File> fileUploadi) {
this.fileUploadi = fileUploadi;
}
public List<String> getFileUploadContentTypei() {
return fileUploadContentTypei;
}
public void setFileUploadContentTypei(List<String> fileUploadContentTypei) {
this.fileUploadContentTypei = fileUploadContentTypei;
}
public List<String> getFileUploadFileNamei() {
return fileUploadFileNamei;
}
public void setFileUploadFileNamei(List<String> fileUploadFileNamei) {
this.fileUploadFileNamei = fileUploadFileNamei;
}
}
and finally the jsp should be something like:
<%@ taglib prefix="s" uri="/struts-tags" %>
<%@ taglib prefix="sj" uri="/struts-jquery-tags"%>
<html>
<head>
<sj:head jqueryui="true" defaultLoadingText="Please wait ..."/>
<s:head />
</head>
<body>
<h1>File Upload:</h1>
<s:form action="uploada"
method="POST" enctype="multipart/form-data" theme="xhtml" >
<s:file label="File:" name="fileUpload" size="40" />
<div id="result" >Add Files Below:</div>
<sj:submit
targets="result"
button="true"
validate="true"
value="Add File"
indicator="indicator"
parentTheme="xhtml"
/>
<sj:submit
button="true"
validate="true"
value="Submit"
indicator="indicator"
parentTheme="xhtml"
/>
</s:form>
</body>
</html>
这篇关于Struts2文件上传的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
