编辑代码

//
//第六章代码
6.1.1
#encoding:utf-8
import requests
import base64
...
车型识别
...
request_url="http://aip.baidubce.com/rest/2.0/image-classify/v1/car"
f=open('[本地文件]','rb')
img=basse64.b64encode(f.read())

params ={"image":img,"top_num":5}
access_token='[调用鉴权口获取的token]'
requests_url=request_url+"?access_token=" + access_token
headers={'content-type':'applicaton/x-www-from-urlencoded'}
response=requests.post（request_url,data=params, headers=headers)
if response:
print (response.json())
{
    "log_id":4086212218842203806,
    "location_result":{
        "width":447,
        "top":226,
        "height":209,
        "left":188
    },
    "result": [{
        "baike_info":{
            "baike_url":"http://baike.baidu.com/item/%E5%B8%83%E5%8A%AO%E8%BF%AAChirom/20419512",
            "descripton": "布加迪Chiron是法国跑车品牌布加迪出品的豪华超跑车。配置四涡轮增压发动机，420公里每小时，
            有23种颜色的选择，售价高达260万美元。"
        }，
        {
            "score": 0.98793351650238,
            "name": "奥迪RS5",
            "year":"无年份信息"
        },
        {
           "score": 0.0021970034576952,
            "name": "奥迪RS5",
            "year":"2011-2017"  
        },
        {
             "score": 0.0021096928976476,
            "name": "奥迪RS4",
            "year":"无年份信息"
        },
        {
             "score": 0.0015581247862428,
            "name": "奥迪RS7",
            "year":"2014-2016"
        },
        {
             "score": 0.00082337751518935,
            "name": "布加迪威航",
            "year": "2014-2015"
    }],
    "color_result": "颜色无法识别"
}

6.1.2
{
 "coord":{"lon":-0.13,"lat":51,51},
 "weather":[{"id":300,"main":"Drizzle","description":"lightintensity drizzle","icon":09d}],
 "base":"stations",
 "main":{
     "temp":280.32,
     "pressure":1012,
     "humidity":81,
     "temp_min":279.15,
     "temp_max":281.15
 },
 "visisbility":10000,
 "wind":{"speed":4.1,"deg":80},
 "clouds":{"all":90},
 "dt":1485789600,
 "sys":{
     "type":1,
     "id":5091,
     "message":0.0103，
     "name":"GB",
     "sunrise":1485762037,
     "sunset":1485794875
 },
 "id":2643743,
 "name":"London",
 "cod":200
}


6.3.2
//
//   ViewController.swift
//  CameraUsage
//
//   Created by Zhifeng Chen on 2020/8/2.
//   Copyright 2020 Zhifeng Chen. All rights reserved.
//

import UIKit

class ViewController: UIViewController , UINavigationControllerDelegate,UIImagePickerControllerDelegate{
    @IBOutlet weak var carImageView: UILabel!
    @IBAction func onLibrary(_sender: UIButton){
        let vc = UIImagePickerController()
        vc.sourceType= .photoLibrary
        vc.allowsEditing =true
        vc.delegate =self
        pressure(vc, animated: true)
    }
    @IBAction func onCamera(_sender: UIButton){
        let vc = UIImagePickerController()
        vc.sourceType= .CameraUsage
        vc.allowsEditing=true
        vc.delegate=self
        present(vc, animated: true)
    }
    func imagePickerController(_picker: UIImagePickerController,didFinishPickingMediaWithInfo info:
    [UIImagePickerController.InfoKey : Any]){
        picker.dismiss(animated: true)
        guard let image= info[.editedImage] as? UIImage else{
            return
        }
        carImageView.image=image
        let access_token=get_baidu_token()
        if access_token==""{
            return
        }
        else{
            get_car_type(access_token: access_token)
        }
    }
    func get_car_type(access_token: String)
    let data_base64_str =data.base64EncodedString()
    let carType_host=  "http://aip.baidubce.com/rest/2.0/image-classify/vl/car" + "?access_token="+
    "\(access_token)"
    if let url= URL(String: carType_host){
        var request = URLRequest(url: url)
        request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField:"Content-Type")
        request.httpMethod="POST"
        let cs= NSCharacterSet(charactersIn:"/=+%").inverted
        let image_urlEncode= data_base64_str.addingPercentEncoding(withAllowedCharacters: cs)
        let postString ="image=\(image_urlEncode!)&top_num=5&baike_num=1"
        request.httpBody= postString.data(using: .utf8)
        URLSession.shared.dataTask(with: request) { (data, request, error) in
        if error !=nil{
            print("error")
        }
        else {
            if let json = try? JSONSerialization.jsonObject(with:data!, options: .allowFragments) as? [String : Any] {
                let result= json["result"] as! Array<Dictionary<String,Any>>
                let name=result[0]["name"] as! String
                var description ="非车类" {
                    if name !="非车类" {
                        let baike_info =result[0]["baike_info"] as! Dictionary<String,String>
                        if let details =baike_info["description"] {
                            description = details
                        }
                    }
                    DispatchQueue.main.async {
                        self.carDetails.text= description
                        self.carName.text = name
                    }
                }
            }
         }
         .result()
         }        
    }
    func get_baidu_token()->String {
        let API_Key ="EIpLhdD7i5152EsiNqpU0F1"
        let API_Key ="P8EZWg4agjDOxABmKvBYSNyZ1YzGFqbm"
        let token_host ="http://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=\(API_Key)&client_secret=\(Secret_Key)"
        var access_token =""
        let semaphore: DispatchSemaphore = DispatchSemaphore(value: 0)

        if let url = URL(String: token_host) {
            URLSession.shared.dataTask(with: url) { (data, response, error) in 
            if error !=nil {
                print("network error")
            }
            else {
                if let json = try? JSONSerialization.jsonObject(with:data!, options: .allowFragments) as? [String : Any] {
                    access_token= json["access_token"] as! String
                }
            }
            semaphore.signal()
            }
        .resume()
        }
        else {
            print("url error")
        }
        semaphore.wait()
        return access_token
    }
}