Struts2文件上传和下载

1.文件上传

jsp页面

1 <input name="packagePath" type="file">

action

 1     private File packagePath;//文件上传属性
 2     private String packagePathContentType;//文件上传类型
 3     private String packagePathFileName;//文件上传名称
 4     private String savePath;//文件上传路径
 5 
 6     /**
 7      * 新增
 8      * @return
 9      * @throws Exception
10      */
11     public String add() throws Exception {
12         
13         saveFile();//上传附件
14         
15         return "add";
16     }
17 
18     private void saveFile() throws Exception{
19         byte[] buffer =new byte[1024];
20         FileInputStream fis=new FileInputStream(getPackagePath());//读取文件
21         //保存文件,并设置保存目录的路径
22         FileOutputStream fos=new FileOutputStream(getSavePath()+"\"+this.getPackagePathFileName());
23         int length=fis.read(buffer);
24         while(length>0){
25             fos.write(buffer,0,length);
26             length=fis.read(buffer);
27         }
28         fis.close();
29         fos.flush();
30         fos.close();
31     }
32 
33     public String getSavePath() {
34         return ServletActionContext.getServletContext().getRealPath(savePath);
35     }
36 
37 
38     public void setSavePath(String savePath) {
39         this.savePath = savePath;
40     }

struts.xml

1         <action name="stu*" class="updateStandardAction" method="{1}">
2             <param name="savePath">/attachment</param> //在项目中要有attachment文件夹,用于保存上传的文件
3         </action>

下载文件

jsp页面

1 <a href="download.action?fileName=${p.packagePath}">下载</a>

action

 1 package cn.bd.standard.action;
 2 
 3 import java.io.BufferedInputStream;
 4 import java.io.FileInputStream;
 5 import java.io.FileNotFoundException;
 6 import java.io.InputStream;
 7 import java.io.UnsupportedEncodingException;
 8 
 9 import org.apache.struts2.ServletActionContext;
10 
11 import com.opensymphony.xwork2.ActionSupport;
12 /**
13  * 下载
14  * @author TaoXianXue
15  *
16  */
17 public class AttachmentDownAction extends ActionSupport{
18     /**
19      * 
20      */
21     private static final long serialVersionUID = 1L;
22     
23     
24     private String inputPath;//读取下载文件的目录
25     private String fileName;//下载文件的文件名
26     private InputStream inputStream;//读取下载文件的输入流
27     private String contentType;//下载文件的类型
28     
29     @Override
30     public String execute() throws Exception {
31         // TODO Auto-generated method stub
32         return super.execute();
33     }
34     
35     public String getInputPath() {
36         return inputPath;
37     }
38     public void setInputPath(String inputPath) {
39         this.inputPath = inputPath;
40     }
41     public String getFileName() throws UnsupportedEncodingException {
42         return java.net.URLEncoder.encode(fileName, "UTF-8");//??????????????????
43         /*return fileName;*/
44     }
45     public void setFileName(String fileName)  {
46         /*this.fileName = new String(fileName.getBytes("ISO8859-1"), "utf-8");*/
47         this.fileName=fileName;
48     }
49     public InputStream getInputStream() throws FileNotFoundException {
50         String path=ServletActionContext.getServletContext().getRealPath(inputPath);
51         return new BufferedInputStream(new FileInputStream(path+"\"+fileName));
52     }
53     public void setInputStream(InputStream inputStream) {
54         this.inputStream = inputStream;
55     }
56     public String getContentType() {
57         return contentType;
58     }
59     public void setContentType(String contentType) {
60         this.contentType = contentType;
61     }
62 }

struts.xml

1         <action name="download" class="cn.bd.standard.action.AttachmentDownAction">
2             <param name="inputPath">/attachment</param> <!-- 从那里下载 -->
3             <result name="success" type="stream">
4                 <param name="contentType">application/octet-stream</param><!-- 下载的文件类型 -->
5                 <param name="inputName">inputStream</param>
6                 <param name="contentDisposition">attachment;fileName="${fileName}"</param>
7             </result>
8         </action>