private File image;//对应的就是表单中文件上传的那个输入域的名称，Struts2框架会封装成File类型的 private String imageFileName;// 上传输入域FileName 文件名 private String imageContentType;// 上传文件的MIME类型
单个文件
1 package cn.itcast.action;
2
3 import java.io.File;
4 import java.io.FileInputStream;
5 import java.io.FileNotFoundException;
6 import java.io.FileOutputStream;
7 import java.io.InputStream;
8 import java.io.OutputStream;
9 import java.io.Serializable;
10
11 import javax.servlet.ServletContext;
12
13 import org.apache.commons.io.FileUtils;
14 import org.apache.struts2.ServletActionContext;
15
16 import com.opensymphony.xwork2.ActionContext;
17 import com.opensymphony.xwork2.ActionSupport;
18
19 public class UploadAction1 extends ActionSupport implements Serializable {
20
21 private File image;//对应的就是表单中文件上传的那个输入域的名称，Struts2框架会封装成File类型的
22 private String imageFileName;// 上传输入域FileName 文件名
23 private String imageContentType;// 上传文件的MIME类型
24
25 public File getImage() {
26 return image;
27 }
28
29
30
31 public void setImage(File image) {
32 this.image = image;
33 }
34
35
36
37 public String getImageFileName() {
38 return imageFileName;
39 }
40
41
42
43 public void setImageFileName(String imageFileName) {
44 this.imageFileName = imageFileName;
45 }
46
47
48
49 public String getImageContentType() {
50 return imageContentType;
51 }
52
53
54
55 public void setImageContentType(String imageContentType) {
56 this.imageContentType = imageContentType;
57 }
58
59
60
61 public String execute(){
62 System.out.println(imageContentType);
63 try {
64 //处理实际的上传代码
65 //找到存储文件的真实路径
66 // System.out.println(imageFileName);
67 ServletContext sc = ServletActionContext.getServletContext();
68 String storePath = sc.getRealPath("/files");
69 //构建输入输出流
70 // OutputStream out = new FileOutputStream(storePath+"\"+imageFileName);
71 // InputStream in = new FileInputStream(image);
72 // byte b[] = new byte[1024];
73 // int len = -1;
74 // while((len=in.read(b))!=-1){
75 // out.write(b, 0, len);
76 // }
77 // out.close();
78 // in.close();
79
80 FileUtils.copyFile(image, new File(storePath,imageFileName));
81
82 ActionContext.getContext().put("message", "上传成功！");
83 return SUCCESS;
84 } catch (Exception e) {
85 e.printStackTrace();
86 return ERROR;
87 }
88 }
89 }
jsp中
1 <body>
2 <form action="${pageContext.request.contextPath}/upload/upload1.action" method="post" enctype="multipart/form-data">
3 文件：<input type="file" name="image"/><br/>
4 <input type="submit" value="上传"/>
5 </form>
6 </body>
多个文件上传
1 package cn.itcast.action;
2
3 import java.io.File;
4 import java.io.FileInputStream;
5 import java.io.FileNotFoundException;
6 import java.io.FileOutputStream;
7 import java.io.InputStream;
8 import java.io.OutputStream;
9 import java.io.Serializable;
10
11 import javax.servlet.ServletContext;
12
13 import org.apache.commons.io.FileUtils;
14 import org.apache.struts2.ServletActionContext;
15
16 import com.opensymphony.xwork2.ActionContext;
17 import com.opensymphony.xwork2.ActionSupport;
18
19 public class UploadAction2 extends ActionSupport implements Serializable {
20
21 private File[] images;//对应的就是表单中文件上传的那个输入域的名称，Struts2框架会封装成File类型的
22 private String[] imagesFileName;// 上传输入域FileName 文件名
23 private String[] imagesContentType;// 上传文件的MIME类型
24
25
26
27 public File[] getImages() {
28 return images;
29 }
30
31
32
33 public void setImages(File[] images) {
34 this.images = images;
35 }
36
37
38
39 public String[] getImagesFileName() {
40 return imagesFileName;
41 }
42
43
44
45 public void setImagesFileName(String[] imagesFileName) {
46 this.imagesFileName = imagesFileName;
47 }
48
49
50
51 public String[] getImagesContentType() {
52 return imagesContentType;
53 }
54
55
56
57 public void setImagesContentType(String[] imagesContentType) {
58 this.imagesContentType = imagesContentType;
59 }
60
61
62
63 public String execute(){
64 try {
65
66 if(images!=null&&images.length>0){
67 ServletContext sc = ServletActionContext.getServletContext();
68 String storePath = sc.getRealPath("/files");
69 for(int i=0;i<images.length;i++)
70 FileUtils.copyFile(images[i], new File(storePath,imagesFileName[i]));
71 }
72 ActionContext.getContext().put("message", "上传成功！");
73 return SUCCESS;
74 } catch (Exception e) {
75 e.printStackTrace();
76 return ERROR;
77 }
78 }
79 }
jsp中
1 <body>
2 <form action="${pageContext.request.contextPath}/upload/upload2.action" method="post" enctype="multipart/form-data">
3 文件1：<input type="file" name="images"/><br/>
4 文件2：<input type="file" name="images"/><br/>
5 <input type="submit" value="上传"/>
6 </form>
7 </body>
struts.xml中配置
设置文件上传大小
1 <constant name="struts.multipart.maxSize" value="52428800"></constant>
1 <package name="upload" namespace="/upload" extends="mypackage"> 2 <action name="upload1" class="cn.itcast.action.UploadAction1" method="execute"> 3 <result name="success">/success.jsp</result> 4 </action> 5 <action name="upload2" class="cn.itcast.action.UploadAction2" method="execute"> 6 <result name="success">/success.jsp</result> 7 </action> 8 </package>