下载文件时设置文件名的方法

时间：2021-10-19 20:39:52

在阿里云云存储OSS中下载文件时设置文件名的办法：

 

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLEncoder;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import com.aliyun.openservices.oss.OSSClient;
import com.aliyun.openservices.oss.model.GeneratePresignedUrlRequest;
import com.aliyun.openservices.oss.model.ObjectMetadata;
import com.aliyun.openservices.oss.model.PutObjectResult;
import com.aliyun.openservices.oss.model.ResponseHeaderOverrides;

public class Sample {

    public static void main(String[] args) throws IOException, ParseException {
        //http://aliyun_portal_storage.oss.aliyuncs.com/oss_api/oss_javahtml/index.html
        //OSS的用户名与密码
        String accessKeyId = "w5c4HJfSXoegx74M";
        String accessKeySecret = "**************";        
        String endpoint = "http://oss-cn-qingdao.aliyuncs.com";
        OSSClient client = new OSSClient(endpoint, accessKeyId, accessKeySecret);
        //http://bbs.aliyun.com/read/149100.html     
        String bucketName="resource-ds";
        
        //判断一下Bucket是不是存在
        /*
        if(!client.doesBucketExist(bucketName))
        {
            // 新建一个Bucket
            //由于Bucket的名字是全局唯一的，所以尽量保证你的 bucketName 不与别人重复。
            client.createBucket(bucketName);   
            client.setBucketAcl(bucketName, CannedAccessControlList.Private);
            System.out.println("创建Bucket成功完成！");            
        }
        */
        //删除Bucket
        //client.deleteBucket(bucketName);
        //System.out.println("删除Bucket成功完成！");
        
        //上传一个文件
        String filePath="F:\\Download\\20140418120446935.png";
        // 获取指定文件的输入流
        File file = new File(filePath);
        InputStream content = new FileInputStream(file);

        // 创建上传Object的Metadata
        ObjectMetadata meta = new ObjectMetadata();

        // 必须设置ContentLength
        meta.setContentLength(file.length());
        String key="test/"+new File(filePath).getName();
        // 上传Object.
        PutObjectResult result = client.putObject(bucketName, key, content, meta);

        // 打印ETag
        System.out.println("上传文件的MD5值"+result.getETag());
        
        //显示中文名称的
        //Date expires = new Date (new Date().getTime() + 1000000000 * 60*60); // 10 minute to expire
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
        Date expires = format.parse("2080-01-01 00:00:00");
        GeneratePresignedUrlRequest generatePresignedUrlRequest = new GeneratePresignedUrlRequest(bucketName, key);
        generatePresignedUrlRequest.setExpiration(expires);
        
        ResponseHeaderOverrides responseHeaders=new ResponseHeaderOverrides();
        //不同浏览器上中文文件名的下载乱码问题
        //http://java-xp.iteye.com/blog/903048
        String filename="黄海测试.png";
        
        //For IE
        String new_filename = URLEncoder.encode(filename, "UTF8");  
        responseHeaders.setContentDisposition("attachment;filename="+new_filename);
        generatePresignedUrlRequest.setResponseHeaders(responseHeaders);
        URL url = client.generatePresignedUrl(generatePresignedUrlRequest);
        System.out.println(url.toString().Replace("+","%2B"));
        
        //For FireFox And Chrome
        new_filename = filename;  
        responseHeaders.setContentDisposition("attachment;filename="+new_filename);
        generatePresignedUrlRequest.setResponseHeaders(responseHeaders);
        url = client.generatePresignedUrl(generatePresignedUrlRequest);
        System.out.println(url.toString().Replace("+","%2B"));                
        
        /*
        // 获取指定bucket下的所有Object信息
        ObjectListing listing = client.listObjects(bucketName);

        // 遍历所有Object
        for (OSSObjectSummary objectSummary : listing.getObjectSummaries()) {
            System.out.println(objectSummary.getKey());
        }
        
        //下载
        OSSObject mydown=client.getObject(bucketName, key);
        InputStream  is   =mydown.getObjectContent();
     
        // 1K的数据缓冲  
        byte[] bs = new byte[1024];  
        // 读取到的数据长度  
        int len;  
        // 输出的文件流  
       String savePath="c:\\1.doc";
         
       OutputStream os = new FileOutputStream(savePath);  
        // 开始读取  
        while ((len =  is .read(bs)) != -1) {  
          os.write(bs, 0, len);  
        }  
        // 完毕，关闭所有链接  
        os.close();  
        is .close();  
        */
    }
}

 

 

 

 

在nginx中配置中文文件名称，在各种浏览器和迅雷中都能正确下载中文文件名的办法：

 
 

#user nobody;
worker_processes 4;
worker_rlimit_nofile 100000;
 
 
 
 
#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
 
 
 
 
#pid logs/nginx.pid;
 
 
 
 

events {
 use epoll;
 multi_accept on;
 worker_connections 2048;
}
 
 
 
 

http {
 include mime.types;
 default_type application/octet-stream;
 
 
 
 
 #log_format main '$remote_addr - $remote_user [$time_local] "$request" '
 # '$status $body_bytes_sent "$http_referer" '
 # '"$http_user_agent" "$http_x_forwarded_for"';
 
 
 
 
#access_log logs/access.log main;
 
 
 
 
 sendfile on;
 tcp_nopush on;
 tcp_nodelay on;
 client_header_buffer_size 128k;
 client_body_buffer_size 512k;
 large_client_header_buffers 4 128k;
 
 
 
 
 #keepalive_timeout 0;
 keepalive_timeout 65;
 
 
 
 
 gzip on;
 gzip_min_length 1k;
 gzip_buffers 16 64k;
 gzip_http_version 1.1;
 gzip_comp_level 6;
 gzip_types text/plain application/x-javascript text/css application/xml;
 gzip_vary on;
 
 
 
 
 upstream backend {
 server 127.0.0.1:8080;
 }
 
 
 
 
 #加载lua的初始化文件
 init_by_lua_file /usr/local/lua_script/init.lua;
 
 
 
 
 server {
 listen 80;
 server_name localhost;
 
 
 
 
charset utf-8;
 
 
 
 
#access_log logs/host.access.log main;
 
 
 
 
 location / {
 #root html;
 #index index.html index.htm;
 root /usr/local/tomcat7/webapps/;
 proxy_pass http://backend;
 }

 location /down/ {
 if ($arg_flag = "download")
 {
 #参考：http://ju.outofmemory.cn/entry/71360
 
 
 
 
 add_header Content-Encoding "utf-8";
 add_header Content-Type "x-msdownload";

 add_header Cache-Control "private";
 add_header Accept-Rangles "bytes";
 
 
 
 
 add_header Content-Disposition "attachment;filename=$arg_n;filename*=UTF-8''$arg_n;";
 add_header Pragma "no-cache";
 add_header Expires "0";
 }
 alias /usr/local/openresty/nginx/html/down/;
 }
 
 
 
 
 #配置Nginx动静分离，定义的静态页面直接从Nginx发布目录读取。
 location ~* ^/(?![down])\.(html|htm|gif|jpg|jpeg|bmp|png|ico|txt|js|css)
 {
 root /usr/local/tomcat7/webapps;
 #expires定义用户浏览器缓存的时间为3天，如果静态页面不常更新，可以设置更长，这样可以节省带宽和缓解服务器的压力
 expires 3d;
 }
 
 
 
 
 location /dsideal_yy/login/doLogin {
 content_by_lua_file /usr/local/lua_script/login.lua;
 }
 
 
 
 
 location /dsideal_yy/resource/getStageSubject {
 content_by_lua_file /usr/local/lua_script/xd_subject.lua;
 }
 
 
 
 
 location /dsideal_yy/resource/getAllScheme {
 content_by_lua_file /usr/local/lua_script/version.lua;
 }
 
 
 
 
 location /dsideal_yy/resource/getResourceList {
 content_by_lua_file /usr/local/lua_script/resource_list.lua;
 }
 
 
 
 
 location /dsideal_yy/resource/getResourceMyList {
 content_by_lua_file /usr/local/lua_script/resource_my_list.lua;
 }

 location /utf_code {
 content_by_lua_file /usr/local/lua_script/utf_code.lua;
 }
 
 
 
 
 location /dsideal_yy/resource/setDownCount {
 content_by_lua_file /usr/local/lua_script/down_count.lua;
 }
 
 
 
 
 location /dsideal_yy/resource/getStructureInfo {
 content_by_lua_file /usr/local/lua_script/structure.lua;
 }
 
 
 
 
 location /dsideal_yy/resource/getPersonXdkm {
 content_by_lua_file /usr/local/lua_script/person_xdkm_get.lua;
 }
 
 
 
 
 location /dsideal_yy/resource/savePerosnXdkm {
 content_by_lua_file /usr/local/lua_script/person_xdkm_set.lua;
 }
 
 
 
 
 location /dsideal_yy/resource/getMediaTypeByXdkm {
 content_by_lua_file /usr/local/lua_script/media_type.lua;
 }
 
 
 
 
#error_page 404 /404.html;
 
 
 
 
 # redirect server error pages to the static page /50x.html
 #
 error_page 500 502 503 504 /50x.html;
 location = /50x.html {
 root html;
 }
 
 
 
 
 # proxy the PHP scripts to Apache listening on 127.0.0.1:80
 #
 #location ~ \.php$ {
 # proxy_pass http://127.0.0.1;
 #}
 
 
 
 
 # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
 #
 #location ~ \.php$ {
 # root html;
 # fastcgi_pass 127.0.0.1:9000;
 # fastcgi_index index.php;
 # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
 # include fastcgi_params;
 #}
 
 
 
 
 # deny access to .htaccess files, if Apache's document root
 # concurs with nginx's one
 #
 #location ~ /\.ht {
 # deny all;
 #}
 }
 
 
 
 

 # another virtual host using mix of IP-, name-, and port-based configuration
 #
 #server {
 # listen 8000;
 # listen somename:8080;
 # server_name somename alias another.alias;
 
 
 
 
 # location / {
 # root html;
 # index index.html index.htm;
 # }
 #}
 
 
 
 

 # HTTPS server
 #
 #server {
 # listen 443 ssl;
 # server_name localhost;
 
 
 
 
 # ssl_certificate cert.pem;
 # ssl_certificate_key cert.key;
 
 
 
 
 # ssl_session_cache shared:SSL:1m;
 # ssl_session_timeout 5m;
 
 
 
 
 # ssl_ciphers HIGH:!aNULL:!MD5;
 # ssl_prefer_server_ciphers on;
 
 
 
 
 # location / {
 # root html;
 # index index.html index.htm;
 # }
 #}
 
 
 
 
}
 
 
 
 




 
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