下载文件时设置文件名的方法

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;
# }
#}

}