OpenResy+Lua 利用百度识图 将图片地址解析成文字

时间：2021-10-19 05:36:31

LUA代码：（注：LUA里有一个调用百度识图的接口IP:123.125.115.189(stu.baidu.com)，不知为什么我的虚拟机无法解析stu.baidu.com，所以我只能PING出IP来用。）

location /test {

            content_by_lua '

                local request_method = ngx.var.request_method;

                local args = nil;

                if "GET" == request_method then

                    args = ngx.req.get_uri_args();

                else

                    ngx.req.read_body();

                    args = ngx.req.get_post_args();

                end

                local imageUrl = args["imageUrl"]

                function Split(szFullString, szSeparator)

                    local nFindStartIndex =

                    local nSplitIndex =

                    local nSplitArray = {}

                    while true do

                        local nFindLastIndex = string.find(szFullString, szSeparator, nFindStartIndex)

                        if not nFindLastIndex then

                            nSplitArray[nSplitIndex] = string.sub(szFullString, nFindStartIndex, string.len(szFullString))

                            break

                            end

                        nSplitArray[nSplitIndex] = string.sub(szFullString, nFindStartIndex, nFindLastIndex - )

                        nFindStartIndex = nFindLastIndex + string.len(szSeparator)

                        nSplitIndex = nSplitIndex +

                    end

                    return nSplitArray

                end

                local cjson = require "cjson"

                local http = require "resty.http"

                local hc = http:new()

                local ok, code, headers, status, body  = hc:request {

                    url = "http://123.125.115.189/n/pc_search?queryImageUrl="..imageUrl,

                    method = "GET", -- POST or GET

                }

                local _,aaa = string.find(body,"keywords:\'")

                local bbb = string.find(body,"|default")

                local ccc = string.sub(body,aaa+,bbb-)

                ngx.say(tostring(ccc))

            ';

        }

HTML代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>

    <title>Untitled</title>

    <script src="http://libs.baidu.com/jquery/1.7.2/jquery.min.js"></script>

</head>

<body>

<input type="button" value = "test" id ="test" />

<input type="text"  id ="imgUrl" />

<input type="button" value = "识图" id ="st" />

</body>

<script>

function unicode2Chr(str) {

    str=str.replace(/\\/g,"%");

    return unescape(str);

    } 

    $(function(){

        $("#test").click(function(){

            alert();

            var str = "\x22\\u82f9\\u679c\x22,\x22\\u6307\\u6325\\u5927\\u5e08\x22,\x22\\u51fa\\u67dc\x22";

            var code = str.replace(/\x22/g, "")

            alert(code);

            alert(unicode2Chr(code));

        });

        $("#st").click(function(){

            var image_Url = $("#imgUrl").val();

            $.ajax({

                type : "POSST",

                async : false,

                url : "/test",

                data:{imageUrl:image_Url},

                success : function(data) {

                    var code = data.replace(/\\x22/g, "")

                    alert(unicode2Chr(code).replace(/%/g, ""));

                }

            });

        });

    });

</script>

</html>

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