aardio实现jsonPath抽取-精品资源-Aardio资源网

aardio实现jsonPath抽取

瞌睡蟲子 6月前 707

import web.json;
namespace myplu
class jsonPath {
    ctor( jsn ) {
        if(type(jsn) !== "table"){
            jsn = ..web.json.parse(jsn);
        }
        this._jsonObj = jsn;
    };
    type = "myplu.jsonPath";
    _REGEX_PARENT = "..";   // 用来跨级查找   ..
    _REGEX_POINT = "^\[\(([\w\W]+)\)\]$";   // 表达式转为下标值 [(…)]
    _REGEX_FILTER = "^\[\??\(([\w\W]+)\)\]$";   // 条件过滤 [?(…)]
    _REGEX_SLICE = "^\[\s*(-?\d*)\s*\:\s*(-?\d*)\s*\:?\s*(\d*)\s*\]$";  // 数组分割 [start:end:step]
    _normalize = function(expr) {
        // 提取[…]格式
        var pattern = "%\[\]"
        var sub = ..string.matches(expr, pattern);
        
        // 将[…]先去掉
        var str = ..string.replace(expr, "%\[\]", ";[#]");
        // 然后将.替换成;
        str = ..string.replace(str, "\.", ";");
        // 去掉多余的空白符
        str = ..string.replace(str, "\s+", "");
        // 还原..符号
        str = ..string.replace(str, ";{2,}", ";..;");
        // 拆分表达式
        str = ..string.split(str, ";");
        for (k, v in str) {
            // 还原[…]表达式
            if (v === "[#]") {
                var t = ..table.remove(sub);
                t = t[1];
                
                // 格式化 [p1,p2,p3] [\d:\d:\d] [*] 表达式
                if (..string.find(t, "^[\[\]\s\d-,\:\*]+$")) {
                    t = ..string.replace(t, "\s", "");
                }
                else {
                    // 格式化 [?(…)] [(…)] ["p1","p2","p3"]表达式
                    t = ..string.replace(t, "^\[\s*", "[");
                    t = ..string.replace(t, "\s*\]$", "]");
                }
                
                // [\d] ["key"] ['key'] [\d,\d] ["key","key1"] 转为值或数组
                if(..string.find(t,this._REGEX_SLICE) or ..string.find(t,this._REGEX_FILTER)){   
                }else {
                    t = ..web.json.parse(t);
                    select(#t) {
                        case 0 {
                            t = "*";
                        }
                        case 1 {
                            t = t[1];
                        }                       
                    }
                }
                
                str[k] = t;
            }
        }
        return str;
    };
    _eval = function(exp,_v){
        return eval(..string.replace(exp,"\@","_v")); 
    };    
    _trace = function(index, value, jMap, parent) {
        // 是否跨级查找
        var loc = parent: jMap[index];
        // 有表达式才查找
        if (loc) {
            // 查找目标为对象，而且有表达式才执行查找
            if(type(value) == "table"){
                if (value[[loc]]) {
                    // 直接取值
                    this._trace(index + 1, value[[loc]], jMap);
                }
                elseif(..table.isArray(loc)){
                    // ["key"] ['key'] [1] [p1,p2,p3] ["p1","p2","p3"]
                    for(k,v in loc){
                        this._trace(index, value, jMap, v);
                    }                   
                }               
                elseif(loc === "*") { 
                    // [*]
                    for (k, v in value) {
                        this._trace(index + 1, v, jMap);
                    }                
                }
                elseif(loc === this._REGEX_PARENT) {
                    // ..
                    this._trace(index + 1, value, jMap);
                    for (k, v in value) {
                        this._trace(index, v, jMap, this._REGEX_PARENT);
                    }                   
                }
                elseif(..string.find(loc, this._REGEX_SLICE) && ..table.isArray(value)) {
                    // [start:end:step] 数组类型
                    var step = ..string.matches(loc, this._REGEX_SLICE);
                    var st, ed, sp = ..table.unpack(step[1]);
                    var res = ..table.slice(value, tonumber(st), tonumber(ed));
                    for (i = 1; #res; tonumber(sp)) {
                        this._trace(index + 1, res[i], jMap);
                    }
                }
                elseif(..string.find(loc, this._REGEX_POINT)) {
                    // [(…)]
                    var point = ..string.matches(loc, this._REGEX_POINT); 
                    point = point[1];
                    var res = this._eval(point, value);
                    if(!res){
                        return ; 
                    }
                    if(type(res) == "table"){
                        for(k,v in res){
                            this._trace(index, value, jMap, v);
                        }                       
                    }else {
                        this._trace(index, value, jMap, res);
                    }                   
                }
                elseif(..string.find(loc, this._REGEX_FILTER)) {
                    // [?(…)]
                    var filter = ..string.matches(loc, this._REGEX_FILTER);
                    filter = filter[1];         
                    for(k,v in value){
                        var res = this._eval(filter, v);
                        if(res){
                            this._trace(index+1, v, jMap);
                        }                       
                    }                   
                }   
            }         
        }
        else {
            //..console.dump(value);
            // 非对象直接返回查找结果
            ..table.push(this.resultItems,value); 
        }
    };
    ["selectList"] = function(jsonpath, node) {
        node := this._jsonObj;
        if(type(node) !== "table"){
            node = ..web.json.parse(node);
        }
        var jMap = this._normalize(jsonpath);
        //..console.dump(jMap); 
        this.resultItems = {};
        this._trace(2, node, jMap);
        var res = this.resultItems;
        return res; 
    };    
    ["select"] = function(jsonpath, node) {
        var res = this.selectList(jsonpath, node);
        if(#res){
            return res[1]; 
        }
    };}
namespace jsonPath;

/*****intellisense(myplu)
jsonPath = 导入jsonPath库
jsonPath(__) = 创建jsonPath选择器，@1 为json字符串或者table对象。
jsonPath() = !myjpObj.
end intellisense*****//*****intellisense(!myjpObj)
selectList(__) = 抽取列表。@1 为jsonPath表达式， @2 可选，抽取对象。\n 参考：https://goessner.net/articles/JsonPath/
select(__) = 抽取单值。@1 为jsonPath表达式， @2 可选，抽取对象。\n 参考：https://goessner.net/articles/JsonPath/
end intellisense*****/

纯aardio代码实现jsonPath。
注意：[(…)]，[?(…)] 里面的表达式要用aardio对应对象方法操作。

最新回复 (8)

光庆 6月前

0 2楼

好东西，顶一下。
小光芒 6月前

0 3楼

是还可以直接返回节点？
瞌睡蟲子 6月前

0 4楼

小光芒是还可以直接返回节点？
可以啊，就是table的抽取
netfox 6月前

0 5楼

顶上去,好东西,$..book[?(@.price<10)] 这种筛选支持不了
grok 6月前

0 6楼

厉害。。。。对 jason 是刚需

瞌睡蟲子 6月前

0 7楼

netfox 顶上去,好东西,$..book[?(@.price

 
import web.json;

namespace myplu

class jsonPath {
    ctor( jsn ) {
        if(type(jsn) !== "table"){
        	jsn = ..web.json.parse(jsn);
        }
        this._jsonObj = jsn;
    };
    type = "myplu.jsonPath";
    _REGEX_PARENT = "..";	// 用来跨级查找	..
    _REGEX_POINT = "\[\(([\w\W]+)\)\]";	// 表达式转为下标值	[(…)]
    _REGEX_FILTER = "\[\??\(([\w\W]+)\)\]";	// 条件过滤 [?(…)]
    _REGEX_SLICE = "\[\s*(-?\d*)\s*\:\s*(-?\d*)\s*\:?\s*(\d*)\s*\]";	// 数组分割 [start:end:step]
    _normalize = function(expr) {
        // 提取[…]格式
        var pattern = "%\[\]"
        var sub = ..string.matches(expr, pattern);
        
        // 将[…]先去掉
        var str = ..string.replace(expr, "%\[\]", ";[#]");
        // 然后将.;替换成;
        str = ..string.replace(str, "\.;?", ";");
        // 去掉多余的空白符
        str = ..string.replace(str, "\s+", "");
        // 还原..符号
        str = ..string.replace(str, ";{2,}", ";..;");
        // 拆分表达式
        str = ..string.split(str, ";");
        for (k, v in str) {
            // 还原[…]表达式
            if (v === "[#]") {
                var t = ..table.remove(sub);
                t = t[1];
                
                // 格式化 [p1,p2,p3] [\d:\d:\d] [*] 表达式
                if (..string.find(t, "^[\[\]\s\d-,\:\*]+$")) {
                    t = ..string.replace(t, "\s", "");
                }
                else {
                	// 格式化 [?(…)] [(…)] ["p1","p2","p3"]表达式
                    t = ..string.replace(t, "^\[\s*", "[");
                    t = ..string.replace(t, "\s*\]$", "]");
                }
                
                // [\d] ["key"] ['key'] [\d,\d] ["key","key1"] 转为值或数组
                if(..string.find(t,this._REGEX_SLICE) or ..string.find(t,this._REGEX_FILTER)){   
                }else {
                	t = ..web.json.parse(t);
                	select(#t) {
                		case 0 {
                		    t = "*";
                		}
                		case 1 {
                		    t = t[1];
                		}                		
                	}
                }
                
                str[k] = t;
            }
        }
        return str;
    };
    _eval = function (exp,_v) {
        if(type(_v) !== "table"){
        	return ; 
        }
        exp = ..string.replace(exp,"\@","_v");
        //..console.log(exp,_v);
    	var f = assert( loadcode("var _v = ...;return (" + exp + ")") );
    	return f(_v);
	};
    _trace = function(index, value, jMap, parent) {
        // 是否跨级查找
        var loc = parent: jMap[index];
        // 有表达式才查找
        if (loc) {
            // 查找目标为对象，而且有表达式才执行查找
            if(type(value) == "table"){
            	if (value[[loc]]) {
            	    // 直接取值
                	this._trace(index + 1, value[[loc]], jMap);
            	}
            	elseif(..table.isArray(loc)){
            		// ["key"] ['key'] [1] [p1,p2,p3] ["p1","p2","p3"]
            		for(k,v in loc){
            			this._trace(index, value, jMap, v);
            		}            		
            	}            	
            	elseif(loc === "*") { 
            	    // [*]
                	for (k, v in value) {
                    	this._trace(index + 1, v, jMap);
                	}                
            	}
            	elseif(loc === this._REGEX_PARENT) {
            	    // ..
                	this._trace(index + 1, value, jMap);
                    for (k, v in value) {
                        this._trace(index, v, jMap, this._REGEX_PARENT);
                    }                	
            	}
            	elseif(..string.find(loc, this._REGEX_SLICE) && ..table.isArray(value)) {
                	// [start:end:step]	数组类型
                	var step = ..string.matches(loc, this._REGEX_SLICE);
                	var st, ed, sp = ..table.unpack(step[1]);
                	var res = ..table.slice(value, tonumber(st), tonumber(ed));
                	for (i = 1; #res; tonumber(sp)) {
                    	this._trace(index + 1, res[i], jMap);
                	}
            	}
            	elseif(..string.find(loc, this._REGEX_POINT) && ..table.isArray(value)) {
            	    // [(…)]
                	var point = ..string.match(loc, this._REGEX_POINT); 
                	var res = this._eval(point, value);
                	if(!res){
                		return ; 
                	}
                	if(type(res) == "table"){
                		for(k,v in res){
                			this._trace(index, value, jMap, v);
                		}                		
                	}else {
                		this._trace(index, value, jMap, res);
                	}                	
            	}
            	elseif(..string.find(loc, this._REGEX_FILTER) && ..table.isArray(value)) {
                	// [?(…)]  
                	var filter = ..string.match(loc, this._REGEX_FILTER); 
                	//..console.dump(loc,value);   
                	for(k,v in value){
                	    var res = this._eval(filter, v);
                		if(res){
                			this._trace(index+1, v, jMap);
                		}                  		
                	}                	
            	}   
            }         
        }
        else {
            //..console.dump(value);
            // 非对象直接返回查找结果
            ..table.push(this.resultItems,value); 
        }
    };
	["selectList"] = function(jsonpath, node) {
        node := this._jsonObj;
        if(type(node) !== "table"){
        	node = ..web.json.parse(node);
        }
        var jMap = this._normalize(jsonpath);
        //..console.dump(jMap); 
        this.resultItems = {};
        this._trace(2, node, jMap);
        var res = this.resultItems;
        return res; 
    };    
	["select"] = function(jsonpath, node) {
        var res = this.selectList(jsonpath, node);
        if(#res){
        	return res[1]; 
        }
    };
}

namespace jsonPath;

/*****intellisense(myplu)
jsonPath = 导入jsonPath库
jsonPath(__) = 创建jsonPath选择器，@1 为json字符串或者table对象。
jsonPath() = !myjpObj.
end intellisense*****/

/*****intellisense(!myjpObj)
selectList(__) = 抽取列表。@1 为jsonPath表达式， @2 可选，抽取对象。\n 参考：https://goessner.net/articles/JsonPath/
select(__) = 抽取单值。@1 为jsonPath表达式， @2 可选，抽取对象。\n 参考：https://goessner.net/articles/JsonPath/
end intellisense*****/

更新了一下表达式执行方法，现在可以了

瞌睡蟲子 6月前

0 8楼

测试用例

import console;
import myplu.jsonPath;

var a = `[{"searchValue":null,"createBy":"唐善伟","createTime":"2023-12-16 19:02:29","updateBy":"张巍-同步材料+商品价格","updateTime":"2024-03-15 08:33:40","remark":null,"params":{},"newRoleIds":null,"newRole":null,"onlineNumber":null,"sysPost":null,"userid":null,"id":794,"productName":"德国马牌235/50R19 99V FR UC6 SUV","productShortName":"德国马牌ContinentalUltraContact UC6 SUV","productCode":"TMTP2023121619003","materialCode":"017001-01100","partNumber":null,"productTypeId":36,"productTypeName":"德国马牌","productTypeParentId":6,"productTypeParentName":"品牌轮胎","productSaleType":1,"productCategory":1,"productBrandId":12,"productBrandName":"德国马牌","productBrandEnglishName":null,"productMiniLogo":"https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/minilogo/shopmall_product_info/b5fe0f1b4ad0424cb9a207b5f7452aab.png","productLogoImg":"https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/772a929e3cb442b284c539b406abe4c1.png,https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/3cbdfa4845ba47fd897dc34da9431832.png,https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/61a6eb58c847485abc199c8c15ab6c2a.png","productDesc":null,"productDescImgSrcs":null,"imgAccessoryId":null,"productDescImg":"https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/descimg/shopmall_product_info/c84af353e394417e8f8a4b509ac9b27c.png","productCrossedPrice":null,"productSalePrice":1099.0,"productSupplier":"大陆马牌轮胎（中国）有限公司","productMaker":"大陆马牌轮胎（中国）有限公司","productModel":"UltraCont UC6 SUV","productSpecs":"235/50R19","productSaleLabel":null,"productUnit":"条","productMinSaleNum":1,"productVirtualSaleNum":2,"productSaleTotal":null,"productSingleMaxnum":4,"productCusMaxnum":null,"aftersaleDesc":null,"productSaleOrg":1,"productServiceType":null,"productShowStatus":1,"productSaleStatus":1,"isHomepageShow":0,"buyQuantity":null,"showPage":2,"showActivityId":null,"isFit":0,"isHaveGift":1,"isHaveActivity":0,"activityName":null,"isHaveCoupon":1,"productLabels":["防滑","静音"],"activityLabels":null,"tireSize":"235/50 R19
","tireLoad":"775","tireSpeed":"240","tireFigure":null,"tireDiameter":null,"tireWidth":null,"tireAspectRatio":null,"supplierCode":null,"saleNum":"已售 2","shopmallProductBrand":null,"giftProducts":null,"activityInfos":null,"number":null,"activityLabel":null,"giftCount":4,"productLabel":"防滑,静音","sales":null,"reduceSales":null,"bannerImg":null,"detailImg":null,"brandImg":null,"giftDetailImg":null,"giftProductNumRule":null,"couponLabel":34,"sortNum":0,"isHaveStock":null,"specParams":null,"autoGiveCoupon":0,"dot":null},{"searchValue":null,"createBy":"唐善伟","createTime":"2023-12-16 19:03:18","updateBy":"张巍-同步材料+商品价格","updateTime":"2024-03-15 08:33:40","remark":null,"params":{},"newRoleIds":null,"newRole":null,"onlineNumber":null,"sysPost":null,"userid":null,"id":795,"productName":"德国马牌235/50R19 103V XL UC6 SUV","productShortName":"德国马牌ContinentalUltraContact UC6 SUV","productCode":"TMTP2023121619004","materialCode":"017001-01543","partNumber":null,"productTypeId":36,"productTypeName":"德国马牌","productTypeParentId":6,"productTypeParentName":"品牌轮胎","productSaleType":1,"productCategory":1,"productBrandId":12,"productBrandName":"德国马牌","productBrandEnglishName":null,"productMiniLogo":"https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/minilogo/shopmall_product_info/1f6c2ce9782e45258ce4aaeaa3c950f5.png","productLogoImg":"https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/0859cb90ad2843cbbbb25ff059f60254.png,https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/c21ff76ce076477aa21f7f5d8bedfcf5.png,https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/e2354958b28e4449b3a4f0bf922d6770.png","productDesc":null,"productDescImgSrcs":null,"imgAccessoryId":null,"productDescImg":"https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/descimg/shopmall_product_info/13c9102f0c9f454f8dde77515273a4a6.png","productCrossedPrice":null,"productSalePrice":1159.0,"productSupplier":"大陆马牌轮胎（中国）有限公司","productMaker":"大陆马牌轮胎（中国）有限公司","productModel":"UltraCont UC6 SUV","produ
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ull,"id":1154,"productName":"米其林轮胎 揽途3 LATITUDE SPORT3 235/50R19 103V Michelin","productShortName":"米其林Michelin 揽途3 LATITUDE SPORT3","productCode":"TMTP2023122911006","materialCode":"017001-03674","partNumber":null,"productTypeId":37,"productTypeName":"米其林","productTypeParentId":6,"productTypeParentName":"品牌轮胎","productSaleType":1,"productCategory":1,"productBrandId":13,"productBrandName":"米其林","productBrandEnglishName":"Michelin","productMiniLogo":"https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/443d9610c2624800985fa83ef60d8335.png","productLogoImg":"https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/443d9610c2624800985fa83ef60d8335.png,https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/fd4537770eb3487daefb220f05a4d532.png,https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/3f7a9ad5bbac4455a71701be3e25f6f6.png,https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/logoimg/shopmall_product_info/db17603d3b2c4d4f97c491f164976bb1.png","productDesc":null,"productDescImgSrcs":null,"imgAccessoryId":null,"productDescImg":"https://tsf.obs.cn-bj1.ctyun.cn/wechat/xcx/product/descimg/shopmall_product_info/7b20f533a9874b2cb9e08409c65783b4.png","productCrossedPrice":null,"productSalePrice":1309.0,"productSupplier":"郑州甲乙丙丁有限公司","productMaker":"米其林","productModel":"LATITUDE SPORT3","productSpecs":"235/50R19","productSaleLabel":"操控","productUnit":"条","productMinSaleNum":1,"productVirtualSaleNum":0,"productSaleTotal":null,"productSingleMaxnum":4,"productCusMaxnum":null,"aftersaleDesc":null,"productSaleOrg":1,"productServiceType":null,"productShowStatus":1,"productSaleStatus":1,"isHomepageShow":0,"buyQuantity":null,"showPage":2,"showActivityId":null,"isFit":0,"isHaveGift":1,"isHaveActivity":0,"activityName":null,"isHaveCoupon":1,"productLabels":["操控"],"activityLabels":null,"tireSize":"235/50 R19","tireLoad":"875","tireSpeed":"240","tireFigure":null,"tireDiameter":null,"tireWidth":null,"tireAspectRatio":null,"suppl
ierCode":null,"saleNum":"已售 0","shopmallProductBrand":null,"giftProducts":null,"activityInfos":null,"number":null,"activityLabel":null,"giftCount":4,"productLabel":"操控","sales":null,"reduceSales":null,"bannerImg":null,"detailImg":null,"brandImg":null,"giftDetailImg":null,"giftProductNumRule":null,"couponLabel":34,"sortNum":0,"isHaveStock":null,"specParams":null,"autoGiveCoupon":0,"dot":null}]`;

var jp = myplu.jsonPath(a);  
a = jp.selectList("$.[(table.len(@) - 1 )]")
console.dump(a);


a = jp.selectList(`$.[?(string.find(@["saleNum"],"0") )].saleNum`)
console.dump(a);

a = jp.selectList("$.[?(@.id == 1154)].productName")
console.dump(a);

a = jp.selectList(`$.[?(@["productTypeName"] == '德国马牌' )].productName`)
console.dump(a);

console.pause();

netfox 6月前

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瞌睡蟲子测试用例 import console; import myplu.jsonPath; var a =&nbs ...
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