无法连接网站时的Jsoup错误处理 [英] Jsoup error handling when couldn't connect to website

问题描述

当程序无法连接到网站时，如何在Jsoup上进行错误处理?

How do I do error handling on Jsoup when the program fails to connect to the website?

例如，该网站不存在，我想向用户显示错误消息

For example that the website doesn't exist and I would like to print error message to the user

下面的代码显示了我连接到某个网站的方式，但是我想要的是，如果该网站不存在，我希望它打印错误消息.

The code below shows the way I connected to a certain website but what I want is that if the website doesn't exist, I wanted it to print error messages.

Document doc;
try {

    // need http protocol
    doc = Jsoup.connect("https://forum.lowyat.net/user/OldSchoolJoke").get();

    // get page title
    String title = doc.title();
    //System.out.println("title : " + title);

    // get all links
    Elements links = doc.select("div.postdetails");
    for (Element link : links) {

        // get the value from href attribute
                    System.out.println("\nlink : " + link.attr("div"));
        System.out.println("text : " + link.text());

    }

} catch (IOException e) {
    e.printStackTrace();
}

推荐答案

尝试一下，

try{
    Connection.Response response = Jsoup.connect("https://asdasdasd.com")
                            .userAgent("Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.21 (KHTML, like Gecko) Chrome/19.0.1042.0 Safari/535.21")
                            .timeout(10000)
                            .ignoreHttpErrors(true).
                            .execute();

    int statusCode = response.statusCode();
    if(statusCode == 200) {
        Document doc = Jsoup.connect("https://asdasdasd.com").get();
        Elements links = doc.select("div.postdetails");
        for (Element link : links) {
            // get the value from href attribute
            System.out.println("\nlink : " + link.attr("div"));
            System.out.println("text : " + link.text());
        }
    }
    else {
        System.out.println("received error code : " + statusCode);
    }
} catch (IOException e) {
    e.printStackTrace();
}

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