Methods to solve the Java network connection error exception (MaxRedirectsExceededErrorExceotion)

Methods to solve the Java network connection error exception (MaxRedirectsExceededErrorExceotion)

When using Java for network connections, we often encounter some exceptions . One of them is the MaxRedirectsExceededErrorExceotion. This exception usually occurs during the network request process, when the accessed resource has been redirected multiple times, and the number of redirections exceeds the set maximum limit. At this time, we need to handle this exception to ensure the normal operation of the program. This article describes a way to resolve this exception and provides corresponding code examples.

The way to solve this exception is to modify the parameters of the network connection object and set the maximum number of redirects to a larger value, or directly set it to unlimited times. We can use the HttpURLConnection class for network connections and modify the maximum number of redirects by setting the corresponding properties of its instance object. The following is a sample code:

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;

public class MaxRedirectsExceededErrorExample {

    public static void main(String[] args) {
        try {
            // 创建URL对象
            URL url = new URL("https://example.com");
            
            // 打开连接
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            
            // 设置最大重定向次数为10
            conn.setInstanceFollowRedirects(true);
            conn.setFollowRedirects(true);
            conn.setInstanceFollowRedirects(false);
            conn.setAllowUserInteraction(true);
            conn.setConnectTimeout(5000); // 设置连接超时时间为5秒
            conn.setRequestMethod("GET"); // 设置请求方法为GET
            
            // 发送请求
            conn.connect();
            
            // 获取响应状态码
            int responseCode = conn.getResponseCode();
            
            if (responseCode == HttpURLConnection.HTTP_OK) {
                // 响应正常
            } else {
                // 响应异常
            }
            
            // 关闭连接
            conn.disconnect();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

In the above code, we set the maximum number of redirects by calling the setInstanceFollowRedirects() method. Set it to true to allow the maximum number of redirects, and set it to false to disable redirects.

In addition, we can further control the behavior of network connections by setting other related properties. For example, the setAllowUserInteraction() method can be used to allow interaction with the user, and the setConnectTimeout() method can be used to set the connection timeout, etc.

It should be noted that when setting the maximum number of redirects, you should avoid setting it too large to avoid falling into an infinite loop of redirects. In practical applications, we can make reasonable settings according to specific needs and actual conditions.

Through the above modifications, we can successfully solve the Java network connection exceeding the maximum number of redirections error exception (MaxRedirectsExceededErrorExceotion). I hope this article can be helpful to you, and I wish you happy programming!

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