在upload.jsp页面中将多个文件域对象命名为相同的名字，这样在action中就可以将多个文件域解析成一个数组，数组的大小就是文件域的个数，同时一个文件域解析成三个对应的变量，因此多个文件域对应三个数组，其中每个数组的大小就是文件域的个数。jsp页面代码如下：
</form>
对应的Action依次遍历所有文件域，然后生成对应的输入文件流，输出文件流在指定的服务器保存路径中添加对应的输出文件流保存文件。同时动态指定服务器上文件的 保存路径。
action代码如下：
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class UploadAction extends ActionSupport {
private String title;
private File[] upload;
private String[] uploadFileName;
private String[] uploadContentType;
private String savePath;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
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;
}
public String getSavePath() {
return ServletActionContext.getRequest().getRealPath(savePath);
}
public void setSavePath(String savePath) {
this.savePath = savePath;
}
public String upload()throws Exception{
File[] files=this.getUpload();
for(int i=0;i<files.length;i++){
FileOutputStream fos=new FileOutputStream(this.getSavePath()+"//"+this.getUploadFileName()[i]);
byte[] buffer=new byte[1024];
FileInputStream fis=new FileInputStream(files[i]);
int len=0;
while((len=fis.read(buffer))>0){
fos.write(buffer,0,len);
}
}
return SUCCESS;
}
}
struts.xml文件配置如下：配置文件上传的拦截器，允许 的上传文件类型，上传文件大小限制，同时引入defaultStack拦截器和上传文件在服务器上的保存位置
</struts>
success.jsp页面代码如下：