使用 openCSV

如何解决使用 openCSV

我在使用 JSoup 时遇到问题，因为它给我一个格式错误的 URL 错误。如果我将 URL 硬编码到程序中，它可以正常工作，但是如果我将 csv 文件读入 List ，然后循环列表中的每个值，它就会失败。例如，如果我将 http://www.clubmark.org.uk/ 硬编码到程序中，它可以正常工作，但是如果我将它从 csv 读取到 List 中，它就会失败。

堆栈跟踪是

Exception in thread "restartedMain" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: java.lang.IllegalArgumentException: Malformed URL: http://www.clubmark.org.uk/
    at org.jsoup.helper.httpconnection.url(httpconnection.java:131)
    at org.jsoup.helper.httpconnection.connect(httpconnection.java:70)
    at org.jsoup.Jsoup.connect(Jsoup.java:73)
    at com.domainModel.DownloadImages.findImages(DownloadImages.java:43)
    at com.workingprojects.WebScraperApplication.main(WebScraperApplication.java:40)

我的主要课程是

@SpringBootApplication
@EntityScan({"com.bootstrap","com.domainModel"})
@ComponentScan({"com.bootstrap","com.domainModel"})
public class WebScraperApplication {

    public static void main(String[] args) throws IOException,Csvexception {
        SpringApplication.run(WebScraperApplication.class,args);
        
        DownloadImages downloadImages = new DownloadImages();


        
        ReadCSV readCSV = new ReadCSV();
        ArrayList<String[]> urls = (ArrayList<String[]>) readCSV.csvReader("C:\\link1.csv");
    

        for (int i = 0; i < 1; i++) {     
            String[] thisURLObject = urls.get(0);
            String thisURL =thisURLObject[0];
            String status = downloadImages.findImages(thisURL,"C:\\Users\\xxx\\images");
            System.out.println(thisURL + status);
            
            
            }
        
        
;
        System.out.println("finished");
        
    }

}

我获取图像和发现问题的类是

package com.domainModel;


import org.jsoup.Jsoup;






public class DownloadImages {
    
    
    
     //The url of the website.
    @Getter @Setter
    private String webSiteURL;



//The path of the folder that you want to save the images to
@Getter @Setter
private  String folderPath;
 
public String findImages(String webSiteURL,String folderPath ) {
 
    try {
 
        //Connect to the website and get the html
        Document doc = Jsoup.connect(webSiteURL).get();
        
 
        //Get all elements with img tag,Elements img = doc.getElementsByTag("img");
       System.out.println("Images is" + img.size());
       
 
       String folderNameWk2 = webSiteURL.replace(".html","");
       String folderNameWk3 = folderNameWk2.replace("http://","");
     
       Path path = Paths.get(folderPath + folderNameWk3);
       Files.createDirectories(path);
       String path1 = path.toString();
       System.out.println("The path is " + path1);
       
       
       int counter = 0;
 
        for (Element el : img) {
            
            
            
            String docName = String.valueOf(counter)+".jpeg";
 
            //for each element get the srs url
            String src = el.absUrl("src");
 
            System.out.println("Image Found!");
            System.out.println("src attribute is : "+src);
            getimages(src,path1,docName);
     
            counter = counter+1;
 
        }
 
    } catch (IOException ex) {
        
        System.err.println("There was an error");
        System.out.println(ex);
    //    Logger.getLogger(DownloadImages.class.getName()).log(Level.SEVERE,null,ex);
    }
    
    return "complete";
}



    private void getimages(String src,String folderPath,String docName) throws IOException {
 
     //   String folder = null;
 
        //Exctract the name of the image from the src attribute
        int indexname = src.lastIndexOf("/");
 
        if (indexname == src.length()) {
            src = src.substring(1,indexname);
        }
 
        indexname = src.lastIndexOf("/");
        String name = src.substring(indexname,src.length());
 
        System.out.println(name);
 
        //Open a URL Stream
        URL url = new URL(src);
        InputStream in = url.openStream();
 
        OutputStream out = new bufferedoutputstream(new FileOutputStream(folderPath+"/" + docName));
 
        for (int b; (b = in.read()) != -1;) {
            out.write(b);
        }
        out.close();
        in.close();
 
    }

    /**
     * @param webSiteURL
     * @param folderPath
     */
    public DownloadImages(String webSiteURL,String folderPath) {
        super();
        this.webSiteURL = webSiteURL;
        this.folderPath = folderPath;
    }

    /**
     * 
     */
    public DownloadImages() {
        super();
    }
    
    
}


And the class which gets the CSV file is 

    package com.domainModel;



public class ReadCSV {
    

    
    public List<String[]> csvReader(String fileName) throws IOException,Csvexception{

           
        try (CSVReader reader = new CSVReader(new FileReader(fileName))) {
            List<String[]> r = reader.readAll();
     
            
            return r;
            

    
}
}
}

读入 CSV 文件的班级

public class ReadCSV {
    

    
    public List<String[]> csvReader(String fileName) throws IOException,Csvexception{

           
        try (CSVReader reader = new CSVReader(new FileReader(fileName))) {
            List<String[]> r = reader.readAll();
     
            
            return r;
            

    
}
}
}

我有理由确定问题在于我从列表中传递的内容的格式，但是当我查看这些值时，它们肯定是字符串

csv 文件的前两行

http://www.clubmark.org.uk/,http://www.designit-uk.com/,

记事本前两行数据的图片