struts2文件上传，以及大文件上传(引致张孝祥视频讲座)

本文介绍了一个使用Struts2框架实现文件上传的例子。通过定义FileUploadAction类继承自ActionSupport，并利用Apache Commons IO库进行文件操作。文章还展示了如何配置文件大小限制以及上传表单的实现。

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package com.leeket.action;

import java.io.File;

import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class FileUploadAction extends ActionSupport {

private File upLoadFile; //前台上传的文件

private String upLoadFileContentType; //前台文件类型命名规则为上面的文件加上ContentType

private String upLoadFileFileName;//前台文件名称命名规则上面的文件加上FileName

public String getUpLoadFileContentType() {
return upLoadFileContentType;
}

public void setUpLoadFileContentType(String upLoadFileContentType) {
this.upLoadFileContentType = upLoadFileContentType;
}

public String getUpLoadFileFileName() {
return upLoadFileFileName;
}

public void setUpLoadFileFileName(String upLoadFileFileName) {
this.upLoadFileFileName = upLoadFileFileName;
}

public File getUpLoadFile() {
return upLoadFile;
}

public void setUpLoadFile(File upLoadFile) {
  this.upLoadFile = upLoadFile;
}

@Override
public String execute() throws Exception {

  String path = ServletActionContext.getServletContext().getRealPath("/images");
  System.out.println("path:" + path + ":" + this.upLoadFileContentType + ":" + this.upLoadFileFileName);
  if (upLoadFile != null) {
   File saveFile = new File(new File(path), upLoadFileFileName);
   if (!saveFile.getParentFile().exists()) {
    saveFile.getParentFile().mkdirs();
   }
   FileUtils.copyFile(upLoadFile, saveFile);
   ActionContext.getContext().put("message", "uploadFile is successful");
  }
  return SUCCESS;
}
}