nginx.conf
location / { proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_pass http://backend; } location /file/ { internal; alias /usr/local/; }
设置成 "internal" 属性是用来禁止浏览器直接访问的,只信任后台返回的 "X-Accel-Redirect"。
getDownFile.jsp
<% String filename = request.getParameter("filename"); response.setHeader("Content-Disposition", "attachment;filename="+filename); response.setHeader("Content-Type", "application/octet-stream"); response.setHeader("X-Accel-Redirect", "/file/"+filename); %>
http://10.10.3.205/test/getDownFile.jsp?filename=5.zip
请求到nginx后会发给Tomcat，先判断是否可以下载，若可以下载设置X-Accel-Redirect回给nginx，nginx重新定位到物理文件进行下载。
下面是JFinal的用法
html
<a href="<%=path%>/redis_test/testResponse?id=1&filename=5.zip">下载</a>
后台
String filename = getPara("filename"); String id = getPara("id"); if(id.equals("1")) { getResponse().setHeader("Content-Type", "application/octet-stream"); getResponse().setHeader("Content-Disposition", "attachment;filename="+ URLEncoder.encode("中文名.zip", "UTF-8")); getResponse().setHeader("X-Accel-Redirect", "/file/"+filename); } renderNull();
