<struts-config>
<data-sources />
<form-beans >
<form-bean name="multiUploadForm" type="com.yourcompany.struts.MultiUploadForm" />
</form-beans>
<global-exceptions />
<global-forwards />
<action-mappings >
<action
attribute="multiUploadForm"
name="multiUploadForm"
path="/multiUpload"
scope="request"
type="com.yourcompany.struts.MultiUploadAction"
validate="false" />
</action-mappings>
<message-resources parameter="com.yourcompany.struts.ApplicationResources" />
</struts-config>
Form bean: MultiUploadForm.java
package com.yourcompany.struts;
import java.util.ArrayList;
import java.util.List;
import org.apache.struts.action.ActionForm;
public class MultiUploadForm extends ActionForm {
private List myFiles;
public MultiUploadForm(){
myFiles = new ArrayList();
//為了能夠在頁面初始顯示一個file
myFiles.add(new UploadFile());
}
public List getMyFiles() {
return myFiles;
}
//注意這個方法的定義
public UploadFile getUploadFile(int index){
int size = myFiles.size();
if(index>size-1){
myFiles.add(new UploadFile());
}
return (UploadFile)myFiles.get(index);
}
public void setMyFiles(List myFiles) {
this.myFiles = myFiles;
}
}
ActionBean :MultiUploadAction.java
package com.yourcompany.struts;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
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.upload.FormFile;
public class MultiUploadAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
MultiUploadForm multiUploadForm = (MultiUploadForm) form;
List myFiles = multiUploadForm.getMyFiles();
String fileStr = "";
for (int i = 0; i < myFiles.size(); i++) {
UploadFile uploadFile = (UploadFile) myFiles.get(i);
FormFile file = uploadFile.getFile();
if (file == null) {
System.out.println("file is null");
} else {
// 能運行到這里，就可以使用單個文件上傳的方法進行上傳了。循環而已
System.out.println("filename:::" + file.getFileName());
System.out.println("file size:::" + file.getFileSize());
fileStr += "filename:::" + file.getFileName() + "file size:::" + file.getFileSize() ;
}
}
//返回文本
try
{
response.setHeader("ContentType", "text/html;charset=gbk");
PrintWriter out = response.getWriter();
out.write("<script>parent.callback('upload file success" + fileStr + "')</script>");
}catch(IOException e)
{
e.printStackTrace();
}
return null;
}
}
Bean: UploadFile.java
package com.yourcompany.struts;
import java.io.Serializable;
import org.apache.struts.upload.FormFile;
public class UploadFile implements Serializable {
private FormFile file;
public FormFile getFile() {
System.out.println("run in uploadFile.getFile()");
return file;
}
public void setFile(FormFile file) {
this.file = file;
}
}