nginx配置secure_link文件防盗链示例

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nginx配置

location /tmp {
                #这里配置了2个参数一个是md5，一个是expires      
                secure_link $arg_md5,$arg_expires;
                #md5的哈希格式为 time,uri,test
                secure_link_md5 "$secure_link_expires$uri test";
                #这里我们的md5是我们按照secure_link_md5的方式计算的哈希，secure_link会比对它计算的哈希值是否与我们的md5参数一致
                if ($secure_link = "") {
                         #资源不存在或哈希比对失败
                        return 403;
                }

                if ($secure_link = "0") {
                        #失效超时
                        return 410;
                }
                #重命名文件名称
                add_header Content-Disposition "attachment;filename=$arg_f";
        }

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java代码生成链接代码
pom.xml

    <dependencies>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>1.12</version>
        </dependency>
    </dependencies>

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.digest.DigestUtils;
/**
 * 生成加密連接
 */
public class Main {
    private static String site = "http://172.31.17.110:8081/tmp/";
    private static String secret = "test";
    public static String createLink(String path,String fileName){
        String time = String.valueOf((System.currentTimeMillis() / 1000) + 300); // 5分钟有效
        String md5 = Base64.encodeBase64URLSafeString(DigestUtils.md5(time+"/tmp/test.txt "+secret));
        String url =  site + path + "?md5=" + md5 + "&expires=" + time + "&f="+fileName;
        return url;
    }
    public static void main(String[] args) {
        System.out.println(createLink("test.txt","1232134213.txt"));
    }
}