OpenResy+Lua利用百度识图将图片地址解析成文字

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原作者: [db:作者] 来自: [db:来源] 收藏邀请

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 = 1
                    local nSplitIndex = 1
                    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 - 1)
                        nFindStartIndex = nFindLastIndex + string.len(szSeparator)
                        nSplitIndex = nSplitIndex + 1
                    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+2,bbb-2)                
                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>