struts 文件的上传下载 简要实现 下载过程传递中文实现

package com.citycube.action; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; /** * 文件上传的测试 * * @author ZuoShuai * * 创建于--2011-2-23 */ public class UploadAction extends ActionSupport { private File[] upload; private String[] uploadFileName; private String[] uploadContentType; @Override public String execute() throws Exception { // TODO Auto-generated method stub System.out.println("come to this action.."); for (int i = 0; i < upload.length; i++) { copy(upload[i], uploadFileName[i], uploadContentType[i]); } return SUCCESS; } public void copy(File file, String fileName, String contentType) throws IOException { FileInputStream in = null; FileOutputStream out = null; System.out.println(fileName + "--" + contentType); try { in = new FileInputStream(file); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } String realpath = ServletActionContext.getServletContext().getRealPath( "/upload"); try { out = new FileOutputStream(realpath + "\\" + fileName); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } byte[] bys = new byte[2048]; int length = -1; // 读进 while ((length = in.read(bys)) != -1) { out.write(bys, 0, length); } // 关闭 in.close(); out.close(); } 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; } }