thx,以前没学过lua，现在照着wiki写了一段 应该是可以生效了，各位看看有改进的方法么
location ~ /test {
rewrite_by_lua '
local a_a = string.upper(ngx.var.arg_a)
local b_b = string.upper(ngx.var.arg_b)
ngx.req.set_uri_args({ a = a_a, b = b_b })
ngx.req.set_uri("/test",true)
';
content_by_lua '
local a = string.upper(ngx.var.arg_a)
local b = string.upper(ngx.var.arg_b)
ngx.say("a: ", a)
ngx.say("b: ", b)
';
}
