nginx proxy_pass

[曾瑞略]

Hello,in nginx1 use proxy_pass to nginx2,when http method is get that is ok,but when http method is post ,nginx2 has no access log,nginx1's response  status is 302;  help please,thank you!!
nginx-config details:
nginx1-config:
server {   listen 80;   server_name ocs.aliyun.test;   access_log "pipe:/usr/sbin/cronolog /system/logs/ocs.%Y-%m-%d.log" aliyun_com;   location /widget/ {    proxy_pass http://openwidget.aliyun.test/;    proxy_redirect http://openwidget.aliyun.test/ /widget/;  } } 
 
nginx2-config:
server {   listen 80;   server_name openwidget.aliyun.test;   access_log "pipe:/usr/sbin/cronolog /system/logs/openwidget.%Y-%m-%d.log" aliyun_com;   location / {    proxy_pass http://127.0.0.1:38782/openWidget/;    proxy_redirect http://openwidget.aliyun.test/openWidget/ /;  } } 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.nginx.org/pipermail/nginx/attachments/20130715/10c9b527/attachment.html>