java以流方式下载文件-----struts2.x版_心灵的港湾_百度空间

java以流方式下载文件-----struts2.x版_心灵的港湾_百度空间

java以流方式下载文件-----struts2.x版

2011年04月12日 星期二 11:12

一、java代码： package com.innyo.cms.ui.admin; import java.io.InputStream; import java.util.Date; import org.apache.struts2.ServletActionContext; import com.innyo.cms.util.StringUtil; import com.opensymphony.xwork2.ActionSupport; public class FileDownloadAction extends ActionSupport {  private static final long serialVersionUID = 3732213485796116174L;  private String path;// 要下载的文件路径  private InputStream inputStream;// 输出流  private String fileName;// 输出流生成的文件名    public String execute() throws Exception {   // 取得文件名。   fileName = new String(((new Date()).toLocaleString() + "_" + StringUtil.randomString(6)+ path.substring(path.lastIndexOf("."))).getBytes());   inputStream = ServletActionContext.getServletContext().getResourceAsStream(path);   System.out.println(fileName + "  " + inputStream);   return SUCCESS;  }  /**   * @return the path   */  public String getPath() {   return path;  }  /**   * @param path   *            the path to set   */  public void setPath(String path) {   this.path = path;  }  /**   * @return the inputStream   */  public InputStream getInputStream() {   return inputStream;  }  /**   * @param inputStream   *            the inputStream to set   */  public void setInputStream(InputStream inputStream) {   this.inputStream = inputStream;  }  /**   * @return the fileName   */  public String getFileName() {   return fileName;  }  /**   * @param fileName   *            the fileName to set   */  public void setFileName(String fileName) {   this.fileName = fileName;  } } 二、struts配置 <result name="success" type="stream">     <param name="contentType">application/octet-stream</param>     <param name="inputName">inputStream</param>     <param name="contentDisposition">attachment;filename="${fileName}"</param>     <param name="bufferSize">4096</param>    </result>