GET和POST方式请求API接口数据返回

区别：

GET在浏览器回退时是无害的，而POST会再次提交请求。

GET产生的URL地址可以被Bookmark，而POST不可以。

GET请求会被浏览器主动cache，而POST不会，除非手动设置。

GET请求只能进行url编码，而POST支持多种编码方式。

GET请求参数会被完整保留在浏览器历史记录里，而POST中的参数不会被保留。

GET请求在URL中传送的参数是有长度限制的，而POST么有。

对参数的数据类型，GET只接受ASCII字符，而POST没有限制。

GET比POST更不安全，因为参数直接暴露在URL上，所以不能用来传递敏感信息。

GET参数通过URL传递，POST放在Request body中。

特别：

GET和POST还有一个重大区别，简单的说：

GET产生一个TCP数据包；POST产生两个TCP数据包。

长的说：

对于GET方式的请求，浏览器会把http header和data一并发送出去，服务器响应200（返回数据）；

而对于POST，浏览器先发送header，服务器响应100 continue，浏览器再发送data，服务器响应200 ok（返回数据）。

但是：

1. GET与POST都有自己的语义，不能随便混用。

2. 据研究，在网络环境好的情况下，发一次包的时间和发两次包的时间差别基本可以无视。而在网络环境差的情况下，两次包的TCP在验证数据包完整性上，有非常大的优点。

3. 并不是所有浏览器都会在POST中发送两次包，Firefox就只发送一次。

返回的数据都是一样的，如下：

{
	"item": {
		"num_iid": "652874751412",
		"title": "北欧轻奢布艺沙发 小户型简约现代客厅ins风网红款三双人订制沙发",
		"desc_short": "",
		"price": "480.00",
		"total_price": 0,
		"suggestive_price": 0,
		"orginal_price": "3400.00",
		"nick": "惜情yqq1127",
		"num": 1550,
		"min_num": 0,
		"detail_url": "https://item.taobao.com/item.htm?id=652874751412",
		"pic_url": "//img.alicdn.com/imgextra/i4/2568161054/O1CN01aYBriY1Jem9UDtt9e_!!2568161054.jpg",
		"brand": "#0 工厂",
		"brandId": null,
		"rootCatId": "50008164",
		"cid": "50020632",
		"crumbs": [],
		"created_time": "",
		"modified_time": "",
		"delist_time": "",
		"desc": "
 \n   
\n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n   
 \n  
",
		"desc_img": [
			"http://img.alicdn.com/imgextra/i3/2568161054/O1CN01LFmSOU1Jem9QOjMPb_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i3/2568161054/O1CN014vyOOT1Jem9DpHz3Y_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i1/2568161054/O1CN01B3PpsA1Jem9N8V7uf_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i2/2568161054/O1CN015JbyeY1Jem9MZshUt_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i1/2568161054/O1CN01HXSoxx1Jem9RvgzHN_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i3/2568161054/O1CN01IEultA1Jem9MdEx8R_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i3/2568161054/O1CN0176K98O1Jem9QOjE69_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i4/2568161054/O1CN013Pxp1O1Jem9RvgeTv_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i1/2568161054/O1CN01SfyZ8M1Jem9QOi1Gx_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i4/2568161054/O1CN01bb1POa1Jem9Sdgve2_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i3/2568161054/O1CN018Eo9dV1Jem9KV0y79_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i1/2568161054/O1CN01vuEofr1Jem9Nzy9xY_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i4/2568161054/O1CN01qw9sAi1Jem8wkNKpy_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i1/2568161054/O1CN01HeFhFw1Jem8rLnjBY_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i2/2568161054/O1CN01SNgjoi1Jem9QOil15_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i2/2568161054/O1CN01RXf3RA1Jem9DpHVwj_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i4/2568161054/O1CN01gZmZjt1Jem9ISThgm_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i2/2568161054/O1CN01YL0FHM1Jem9PQTjX9_!!2568161054.jpg",
			"http://img.alicdn.com/imgextra/i4/2568161054/O1CN01UhsEhZ1Jem8yvJIhZ_!!2568161054.jpg"
		],
		"item_imgs": [
			{
				"url": "//img.alicdn.com/imgextra/i4/2568161054/O1CN01aYBriY1Jem9UDtt9e_!!2568161054.jpg"
			},
			{
				"url": "//img.alicdn.com/imgextra/i3/2568161054/O1CN01kjOfNb1Jem9DmWn8Y_!!2568161054.jpg"
			},
			{
				"url": "//img.alicdn.com/imgextra/i1/2568161054/O1CN01HoB9ha1Jem9DmWn8r_!!2568161054.jpg"
			},
			{
				"url": "//img.alicdn.com/imgextra/i4/2568161054/O1CN011PjP2P1Jem9MXEUFT_!!2568161054.jpg"
			},
			{
				"url": "//img.alicdn.com/imgextra/i3/2568161054/O1CN01KUfBFL1Jem9KTTMn1_!!2568161054.jpg"
			}
		],
		"item_weight": "",
		"item_size": "",
		"location": "江苏南通",
		"post_fee": "",
		"express_fee": null,
		"ems_fee": "",
		"shipping_to": "",
		"has_discount": "true",
		"video": {
			"url": null
		},
		"is_virtual": "",
		"sample_id": "",
		"is_promotion": "true",
		"props_name": "31480:14306495906:几人坐:脚踏90*60*48cm;31480:14306495907:几人坐:双人165*95*67cm;31480:14306495908:几人坐:三人210*95*67cm;31480:14306495909:几人坐:单人100*95*67cm;31480:21480914361:几人坐:四人位240*95*67cm;31480:21480914362:几人坐:大四人320*95*76cm;31480:1387571900:几人坐:3米贵妃沙发;31480:32527954:几人坐:定制尺寸;1627207:28321:颜色分类:乳白色 尺寸颜色可定制",
		"prop_imgs": {
			"prop_img": [
				{
					"properties": "1627207:28321",
					"url": "//img.alicdn.com/imgextra/i1/2568161054/O1CN017GTZ4h1Jem9Qra1ap_!!2568161054.jpg"
				}
			]
		},
		"property_alias": "",
		"props": [
			{
				"name": "品牌",
				"value": "#0 工厂"
			},
			{
				"name": "型号",
				"value": "520"
			},
			{
				"name": "材质",
				"value": "木"
			},
			{
				"name": "木质材质",
				"value": "松木"
			},
			{
				"name": "面料",
				"value": "绒布"
			},
			{
				"name": "风格",
				"value": "北欧"
			},
			{
				"name": "几人坐",
				"value": "脚踏90*60*48cm,双人165*95*67cm,三人210*95*67cm,单人100*95*67cm,四人位240*95*67cm,大四人320*95*76cm,3米贵妃沙发,定制尺寸"
			},
			{
				"name": "颜色分类",
				"value": "乳白色"
			},
			{
				"name": "填充物",
				"value": "海绵"
			},
			{
				"name": "结构工艺",
				"value": "木质工艺"
			},
			{
				"name": "是否可定制",
				"value": "是"
			},
			{
				"name": "沙发组合形式",
				"value": "U形"
			},
			{
				"name": "是否可拆洗",
				"value": "是"
			},
			{
				"name": "适用对象",
				"value": "成年人"
			},
			{
				"name": "是否带储物空间",
				"value": "否"
			},
			{
				"name": "产地",
				"value": "上海"
			},
			{
				"name": "地市",
				"value": "上海市"
			},
			{
				"name": "区县",
				"value": "奉贤区"
			},
			{
				"name": "是否组装",
				"value": "否"
			},
			{
				"name": "出租车是否可运输",
				"value": "否"
			},
			{
				"name": "填充物硬度",
				"value": "软"
			},
			{
				"name": "款式定位",
				"value": "经济型"
			}
		],
		"total_sold": null,
		"skus": {
			"sku": [
				{
					"price": "480",
					"total_price": 0,
					"orginal_price": "480",
					"properties": "31480:14306495906;1627207:28321",
					"properties_name": "31480:14306495906:几人坐:脚踏90*60*48cm;1627207:28321:颜色分类:乳白色 尺寸颜色可定制",
					"quantity": "200",
					"sku_id": "4881047531343"
				},
				{
					"price": "1688",
					"total_price": 0,
					"orginal_price": "1688",
					"properties": "31480:14306495907;1627207:28321",
					"properties_name": "31480:14306495907:几人坐:双人165*95*67cm;1627207:28321:颜色分类:乳白色 尺寸颜色可定制",
					"quantity": "150",
					"sku_id": "4881047531344"
				},
				{
					"price": "2088",
					"total_price": 0,
					"orginal_price": "2088",
					"properties": "31480:14306495908;1627207:28321",
					"properties_name": "31480:14306495908:几人坐:三人210*95*67cm;1627207:28321:颜色分类:乳白色 尺寸颜色可定制",
					"quantity": "200",
					"sku_id": "4881047531345"
				},
				{
					"price": "968",
					"total_price": 0,
					"orginal_price": "968",
					"properties": "31480:14306495909;1627207:28321",
					"properties_name": "31480:14306495909:几人坐:单人100*95*67cm;1627207:28321:颜色分类:乳白色 尺寸颜色可定制",
					"quantity": "200",
					"sku_id": "4881047531346"
				},
				{
					"price": "2388",
					"total_price": 0,
					"orginal_price": "2388",
					"properties": "31480:21480914361;1627207:28321",
					"properties_name": "31480:21480914361:几人坐:四人位240*95*67cm;1627207:28321:颜色分类:乳白色 尺寸颜色可定制",
					"quantity": "200",
					"sku_id": "5039985183001"
				},
				{
					"price": "3188",
					"total_price": 0,
					"orginal_price": "3188",
					"properties": "31480:21480914362;1627207:28321",
					"properties_name": "31480:21480914362:几人坐:大四人320*95*76cm;1627207:28321:颜色分类:乳白色 尺寸颜色可定制",
					"quantity": "200",
					"sku_id": "5039985183002"
				},
				{
					"price": "3400",
					"total_price": 0,
					"orginal_price": "3400",
					"properties": "31480:1387571900;1627207:28321",
					"properties_name": "31480:1387571900:几人坐:3米贵妃沙发;1627207:28321:颜色分类:乳白色 尺寸颜色可定制",
					"quantity": "200",
					"sku_id": "5039984824000"
				},
				{
					"price": "3000",
					"total_price": 0,
					"orginal_price": "3000",
					"properties": "31480:32527954;1627207:28321",
					"properties_name": "31480:32527954:几人坐:定制尺寸;1627207:28321:颜色分类:乳白色 尺寸颜色可定制",
					"quantity": "200",
					"sku_id": "5039985183003"
				}
			]
		},
		"seller_id": "2568161054",
		"sales": 35,
		"shop_id": "567158267",
		"props_list": {
			"31480:14306495906": "几人坐:脚踏90*60*48cm",
			"31480:14306495907": "几人坐:双人165*95*67cm",
			"31480:14306495908": "几人坐:三人210*95*67cm",
			"31480:14306495909": "几人坐:单人100*95*67cm",
			"31480:21480914361": "几人坐:四人位240*95*67cm",
			"31480:21480914362": "几人坐:大四人320*95*76cm",
			"31480:1387571900": "几人坐:3米贵妃沙发",
			"31480:32527954": "几人坐:定制尺寸",
			"1627207:28321": "颜色分类:乳白色 尺寸颜色可定制"
		},
		"seller_info": {
			"nick": "惜情yqq1127",
			"item_score": "4.9 ",
			"score_p": "4.9 ",
			"delivery_score": "4.9 ",
			"shop_type": "C",
			"user_num_id": "2568161054",
			"sid": "567158267",
			"title": "现代布艺沙发",
			"zhuy": "https://shop567158267.taobao.com/",
			"shop_name": "现代布艺沙发"
		},
		"tmall": false,
		"error": "",
		"warning": "",
		"url_log": [],
		"fav_count": "7436",
		"fans_count": "644",
		"freight": "平邮: 快递包邮",
		"props_imgs": {
			"prop_img": [
				{
					"properties": "1627207:28321",
					"url": "//img.alicdn.com/imgextra/i1/2568161054/O1CN017GTZ4h1Jem9Qra1ap_!!2568161054.jpg"
				}
			]
		},
		"_ddf": "fu",
		"promo_type": null,
		"props_img": {
			"1627207:28321": "//img.alicdn.com/imgextra/i1/2568161054/O1CN017GTZ4h1Jem9Qra1ap_!!2568161054.jpg"
		},
		"format_check": "ok",
		"shop_item": [],
		"relate_items": []
	},
	"error": "",
	"secache": "4ad7ad2480af253fec9c2fd4daa266bb",
	"secache_time": 1681442715,
	"secache_date": "2023-04-14 11:25:15",
	"translate_status": "",
	"translate_time": 0,
	"language": {
		"default_lang": "cn",
		"current_lang": "cn"
	},
	"reason": "",
	"error_code": "0000",
	"cache": 0,
	"api_info": "today:30 max:10100 all[69=30+21+18];expires:2030-12-31",
	"execution_time": "1.872",
	"server_time": "Beijing/2023-04-14 11:25:15",
	"client_ip": "106.6.33.181",
	"call_args": {
		"num_iid": "652874751412",
		"is_promotion": "1"
	},
	"api_type": "taobao",
	"translate_language": "zh-CN",
	"translate_engine": "baidu",
	"server_memory": "0.94MB",
	"request_id": "gw-4.6438c7992c849",
	"last_id": "1677743647"
}

效果展示