java 从网页中获取图片路径与从js中获取图片路径

待我称王封你为后i 2022-07-14 09:29 179阅读 0赞

package test;
    
    /**
     * Created by yuantongqin on 2016/12/5.
     */
    import java.io.*;
    import java.net.MalformedURLException;
    import java.net.URL;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    public class getHtml2 {
    
        public void getHtmlPicture(String httpUrl) {
            URL url;
            BufferedInputStream in;
            FileOutputStream file;
            try {
                System.out.println("取网络图片");
                String fileName = httpUrl.substring(httpUrl.lastIndexOf("/"));
                String filePath = "F:\\FocuSimple\\test\\src\\pic\\";
                url = new URL(httpUrl);
    
                in = new BufferedInputStream(url.openStream());
    
                file = new FileOutputStream(new File(filePath+fileName));
                int t;
                while ((t = in.read()) != -1) {
                    file.write(t);
                }
                file.close();
                in.close();
                System.out.println("图片获取成功");
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    
        public String getHtmlCode(String httpUrl) throws IOException {
            String content ="";
            URL uu = new URL(httpUrl); // 创建URL类对象
            BufferedReader ii = new BufferedReader(new InputStreamReader(uu
                    .openStream())); // //使用openStream得到一输入流并由此构造一个BufferedReader对象
            String input;
            while ((input = ii.readLine()) != null) { // 建立读取循环，并判断是否有读取值
                content += input;
            }
            ii.close();
    //        return "js中内容";
            return content;
        }
    
        public void get(String url) throws IOException {
    
            String searchImgReg = "(?x)(src|SRC|background|BACKGROUND)=('|\")/?(([\\w-]+/)*([\\w-]+\\.(jpg|JPG|png|PNG|gif|GIF)))('|\")";
            String searchImgReg2 = "http://[/,+&=\\.\\w-]+\\.(jpg|JPG|png|PNG|gif|GIF|jpeg)";
    //        String searchImgReg2 = "(?x)(http://([\\w-]+\\.)+[\\w-]+(:[0-9]+)*(/[\\w-]+)*(/[\\w-]+\\.(jpg|JPG|png|PNG|gif|GIF|jpeg)))";
    
            String content = this.getHtmlCode(url);
            System.out.println(content);
    
            Pattern pattern = Pattern.compile(searchImgReg2);
            Matcher matcher = pattern.matcher(content);
    //        while (matcher.find()) {
                this.getHtmlPicture(url+matcher.group(3));
    //            String group = matcher.group();
    //            System.out.println(group);
    //            mList.add(group);
    //
    //        }
    //
    //        pattern = Pattern.compile(searchImgReg2);
    //        matcher = pattern.matcher(content);
            while (matcher.find()) {
                String group = matcher.group();
                System.out.println(group);
                mList.add(group);
    //            this.getHtmlPicture(matcher.group(3));
    
            }
        }
    
        static  List<String> mList = new ArrayList<String>();
    
        public static void main(String[] args) throws IOException {
    //        String url = "http://image.baidu.com/search/index?tn=baiduimage&ct=201326592&lm=-1&cl=2&ie=gbk&word=%B8%DF%C7%E5%B1%DA%D6%BD&fr=ala&ala=1&pos=0&alatpl=wallpaper&oriquery=%E9%AB%98%E6%B8%85%E5%A3%81%E7%BA%B8";
            String url = "http://www.daimg.com/photo/list_4_1.html";
            getHtml2 gcp = new getHtml2();
            gcp.get(url);
            System.out.println("==长度=="+mList.size());
    
        }
    }