制作环境:
Eclipse3.1.1 、 MyEclipse4.1 、 Tomcat5.5.x
步骤:
新建工程 upload
添加 Struts 框架,使用 Struts1.2 版本
新建 一个 jsp + action 这里将使用动态的 ActionForm
在新建表单对像时使用一个文件名和一个文件对像进行提交
修改动态 From 的类型为
org.apache.struts.upload.FormFile
<
form-bean
name
=
"upfileForm"
type
=
"org.apache.struts.action.DynaActionForm"
>
<
form-property
name
=
"filename"
type
=
"java.lang.String"
/>
<
form-property
name
=
"filedata"
type
=
"java.lang.String"
/>
</
form-bean
>
改为
<
form-bean
name
=
"upfileForm"
type
=
"org.apache.struts.action.DynaActionForm"
>
<
form-property
name
=
"filename"
type
=
"java.lang.String"
/>
<
form-property
name
=
"filedata"
type
=
"
org.apache.struts.upload.FormFile
"
/>
</
form-bean
>
修改 upfile.jsp 文件,在<Form> 中加入
enctype
=
"multipart/form-data"
,这样才可以提交二进制类型的文件
修改文件第一行代码
<%@
page
language
=
"java"
%>
改为
<%@
page
contentType
=
"text/html;charset=UTF-8"
language
=
"java"
%>
这里将使用 UTF-8 的编码格式
修改
upfileAction.java
文件,修改后的内容如下:
package com.test.struts.action;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;
import org.apache.struts.upload.FormFile;
/**
* MyEclipse Struts
* Creation date: 07-05-2006
*
* XDoclet definition:
* @struts.action path="/upfile" name="upfileForm" input="/upfile.jsp" scope="request" validate="true"
*/
public class UpfileAction extends Action {
// --------------------------------------------------------- Instance Variables
// --------------------------------------------------------- Methods
/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) {
DynaActionForm upfileForm = (DynaActionForm) form;
//
声明并获取对像
String filename = upfileForm.getString("filename");
// 输出文件名
System.out.println(filename);
FormFile filedata = (FormFile) upfileForm.get("filedata");
// 取当前系统路径
String filePath = request.getRealPath("/");
try {
// 转换文件为数据流
InputStream stream = filedata.getInputStream();
// 建立输出流
OutputStream bos = new FileOutputStream(filePath + "/" +
filedata.getFileName());
// 将文件写入网站根目录下
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ( (bytesRead = stream.read(buffer, 0, 8192)) != -1) {
bos.write(buffer, 0, bytesRead);
}
bos.close();
stream.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// 返回到提交页面
return mapping.getInputForward();
}
}
现在可以进行测试了
这时将会发现,提交的文件及文件名称都是乱码!下面将解决乱码
增加一个过滤器,过滤器的代码请查看包中的具体文件
在
web.xml
文件中加入以下配置内容,过滤器的编码设置为
UTF-8
<
filter
>
<
filter-name
>
Set Character Encoding
</
filter-name
>
<
filter-class
>
com.test.SetCharacterEncodingFilter
</
filter-class
>
<
init-param
>
<
param-name
>
encoding
</
param-name
>
<
param-value
>
UTF-8
</
param-value
>
</
init-param
>
</
filter
>
<
filter-mapping
>
<
filter-name
>
Set Character Encoding
</
filter-name
>
<
url-pattern
>
/*
</
url-pattern
>
</
filter-mapping
>
<
filter-mapping
>
<
filter-name
>
Set Character Encoding
</
filter-name
>
<
servlet-name
>
action
</
servlet-name
>
</
filter-mapping
>
配置 Tomcat 的 server.xml 文件,文件在 Tomcat_Home/conf 中