方法1:
方法2:
直接将页面中的链接指向所要下载资源的路径,如图
[img]http://dl.iteye.com/upload/attachment/166663/e6b1b4af-9839-3118-af9c-c459726ce6a9.jpg[/img]
package tutorial;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class FileUploadAction extends ActionSupport {
private String fileName;
public String getFileName() {
return fileName;
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
private static void down(String filePath) {
try{
if (file.exists()) {
BufferedInputStream bis = new BufferedInputStream(
new FileInputStream(file));
byte[] buffer = new byte[1024];
filePath=java.net.URLEncoder.encode(
filePath, "UTF-8");// 处理中文文件名的问题
filePath=new String(filePath
.getBytes("UTF-8"), "GBK"));// 处理中文文件名的问题
response.reset();
getResponse().setCharacterEncoding("UTF-8");
response.setContentType("application/x-rar-compressed");// 不同类型的文件对应不同的MIME类型
response.setHeader("Content-Disposition",
"attachment; filename=" + attachmentMO.getFileName());
OutputStream os = response.getOutputStream();
while (bis.read(buffer) > 0) {
os.write(buffer);
}
bis.close();
os.close();
} else {
System.out.println("文件不存在."); }
}
}catch(Exception e){
e.printStackTrace();
}
@Override
public String execute() {
down(fileName);
return SUCCESS;
}
}
方法2:
直接将页面中的链接指向所要下载资源的路径,如图
[img]http://dl.iteye.com/upload/attachment/166663/e6b1b4af-9839-3118-af9c-c459726ce6a9.jpg[/img]