Struts2单文件、多文件上传

来源：互联网发布：黄政民在韩国地位知乎编辑：程序博客网时间：2024/05/01 02:57

1、单文件上传

1）创建JSP页面（simple.jsp）

<%@ page language="java" pageEncoding="utf-8"%>
<%@taglib prefix = "s" uri = "/struts-tags"%>

<html>
<body>
<H1><s:actionmessage/></H1>
<s:form action = "simpleAction" enctype="multipart/form-data">
<s:file name = "upload" label = "请输入要传入的文件名"></s:file>
<s:submit value = "save"></s:submit>
</s:form>
</body>
</html>

2）创建Action（SimpleUploadAction。java）

package upload.singleUpload;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import com.opensymphony.xwork2.ActionSupport;

public class SimpleUploadAction extends ActionSupport {

private static final long serialVersionUID = 1L;
private File upload;//上传的文件
private String uploadFileName;//上传的文件名称
private String uploadContentType;//上传的文件类型

@Override
public String execute() throws Exception {

InputStream in = new FileInputStream(upload);
OutputStream out = new FileOutputStream("d:\\"+uploadFileName);
byte[] buffer = new byte[8192];
int count = 0;
while((count = in.read(buffer)) > 0){
out.write(buffer,0,count);
}
out.close();
in.close();
this.addActionMessage("上传成功");
return SUCCESS;

}

public File getUpload() {
return upload;
}
public void setUpload(File upload) {
this.upload = upload;
}
public String getUploadFileName() {
return uploadFileName;
}
public void setUploadFileName(String uploadFileName) {
this.uploadFileName = uploadFileName;
}
public String getUploadContentType() {
return uploadContentType;
}
public void setUploadContentType(String uploadContentType) {
this.uploadContentType = uploadContentType;
}
}

3）Struts配置文件（struts.xml）

<action name="simpleAction" class = "upload.singleUpload.SimpleUploadAction">

<result name = "success">/upload/simple/simple.jsp</result>
<result name = "input">/upload/simple/simple.jsp</result>
</action>

2、多文件上传
1）创建JSP页面（mutity.jsp）

<%@ page language="java" pageEncoding="utf-8"%>
<%@taglib prefix = "s" uri = "/struts-tags"%>

<html>
<head>
<script language="javascript">

function addComponent()
{
var uploadHTML = document.createElement( "<input type='file' name='upload'/>");
document.getElementById("files").appendChild(uploadHTML);
uploadHTML = document.createElement( "<p/>");
document.getElementById("files").appendChild(uploadHTML);
}
</script>

</head>
<body>
<input type="button" onclick="addComponent();" value="添加文件" />
<br />
<form action="mutityUpload.action"
method="post" enctype="multipart/form-data">
<span id="files">
<input type='file' name='upload' />
</span>
<input type="submit" value="上传" />
</form>
</body>
</html>

2）创建Action（MutityUploadAction。java）

package upload.mutityUpload;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

import com.opensymphony.xwork2.ActionSupport;

public class MutityUploadAction extends ActionSupport {

private static final long serialVersionUID = 1L;
private List<File> upload;
private List<String> uploadFileName;
private List<String> uploadContentType;

@Override
public String execute() throws Exception {

for(int i = 0;upload != null && i<upload.size();i++){
File file = upload.get(i);
InputStream in = new FileInputStream(file);
OutputStream out = new FileOutputStream("d:\\"+uploadFileName.get(i));
byte[] buffer = new byte[8192];
int count = 0;
while((count = in.read(buffer)) > 0){
out.write(buffer,0,count);
}
out.close();
in.close();

}

this.addActionMessage("上传成功");
return SUCCESS;

}

public List<File> getUpload() {
return upload;
}

public void setUpload(List<File> upload) {
this.upload = upload;
}

public List<String> getUploadFileName() {
return uploadFileName;
}

public void setUploadFileName(List<String> uploadFileName) {
this.uploadFileName = uploadFileName;
}

public List<String> getUploadContentType() {
return uploadContentType;
}

public void setUploadContentType(List<String> uploadContentType) {
this.uploadContentType = uploadContentType;
}
}

3）Struts配置文件（struts.xml）

<action name="mutityUpload" class = "upload.mutityUpload.MutityUploadAction">
<result name = "success">/upload/mutity/mutity.jsp</result>
<result name = "input">/upload/mutity/mutity.jsp</result>
</action>

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