>“($request_body~ *(.*))”永远不会匹配其他人所说的任何内容,因此“其他案例”始终是结果
>更重要的是,它使用“proxy_pass”和“if”这是典型的邪恶. http://wiki.nginx.org/IfIsEvil.

要获得您想要的,请使用第三方ngx_lua模块(v0.3.1rc24及更高版本)…

location ~ \.PHP${ 
    rewrite_by_lua ' 
        ngx.req.read_body() 
        local match = ngx.re.match(ngx.var.request_body,"target") 
        if match then 
            ngx.exec("@proxy");
        else 
            ngx.exec("@other_case");     
        end 
    '; 
} 
location @proxy {    
    # test.proxy stuff 
    ... 
}
location @other_case {
    # other_case stuff 
    ... 
}

你可以在https://github.com/chaoslawful/lua-nginx-module/tags获得ngx_lua.

PS.请记住,lua的重写总是在Nginx重写指令之后执行,所以如果你在其他情况下放置任何这样的指令,它们将首先被执行,你将获得有趣的东西.

您应该将所有重写放在lua上下文的重写中,以获得一致的结果.这就是“其他案例”的“if..else..end”安排的原因.

您可能需要这个更长的版本

location ~ \.PHP${ 
    rewrite_by_lua '
        --request body only available for POST requests
        if ngx.var.request_method == "POST"
            -- Try to read in request body
            ngx.req.read_body()
            -- Try to load request body data to a variable
            local req_body = ngx.req.get_body_data()
            if not req_body then 
                -- If empty,try to get buffered file name
                local req_body_file_name = ngx.req.get_body_file()
                --[[If the file had been buffered,open it,read contents to our variable and close]] 
                if req_body_file_name then
                    file = io.open(req_body_file_name)
                    req_body = file:read("*a")
                    file:close()
                end
            end
            -- If we got request body data,test for our text
            if req_body then
                local match = ngx.re.match(req_body,"target") 
                if match then 
                    -- If we got a match,redirect to @proxy
                    ngx.exec("@proxy")
                else
                     -- If no match,redirect to @other_case
                    ngx.exec("@other_case")
                end
            end
        else
            -- Pass non "POST" requests to @other_case
            ngx.exec("@other_case")
        end
    ';
}