Java下载

package com.hebbank.preloan.task;

import javacommon.coreframe.base.BaseController;
import javacommon.coreframe.util.Jurisdiction;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;

@Component
@RequestMapping(value="/downlog")
public class DownLog extends BaseController {

/**日志下载
* @param
* @throws Exception
*/
@RequestMapping(value="/downlog")
public HttpServletResponse downlog(HttpServletRequest request, HttpServletResponse response) throws Exception{
logBefore(logger, Jurisdiction.getUsername()+" 日志下载");
try {
ModelAndView mv = new ModelAndView();
String path = "/home/was/soft/apache-tomcat-7.0.90-2/bin/out.log";
String path = "/home/weblogic/Oracle/Middleware/user_projects/domains/7001_domain/admin_console.log";
// path是指欲下载的文件的路径。
File file = new File(path);
// 取得文件名。
String filename = file.getName();
// 取得文件的后缀名。
String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();
// 以流的形式下载文件。
InputStream fis = new BufferedInputStream(new FileInputStream(path));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
// 清空response
response.reset();
// 设置response的Header
response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes()));
response.addHeader("Content-Length", "" + file.length());
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/octet-stream");
toClient.write(buffer);
toClient.flush();
toClient.close();
} catch (IOException ex) {
ex.printStackTrace();
}
return response;
}

}