How to fill in the url address

How to fill in the url address: 1. Use the correct protocol; 2. Enter the correct domain name; 3. Specify the appropriate port; 4. Determine the correct path; 5. Add the query string.

#In the Internet era, URL is the entrance for us to access web pages and resources. Correctly filling in the URL address is very important for smoothly accessing the target resources. This article will show you how to fill in the URL correctly Address to help you better browse the web and obtain resources.

1. The basic structure of URL

URL stands for Uniform Resource Locator, which is the Uniform Resource Locator. It consists of multiple parts, including protocol, domain name, port, path, query string, etc.

1. Protocol: Indicates the communication protocol used by the browser when accessing resources. Common ones include HTTP, HTTPS, FTP, etc.

2. Domain name: Indicates the address of the server where the resource is located.

3. Port: Indicates the network port number of the server. By default, the default port of the protocol is used. For example, the default port of HTTP is 80.

4. Path: Indicates the specific location of the resource on the server, such as /images/, which can have multiple levels of directories.

5. Query string: used to pass additional parameter information, such as ?id=1&name=example.

2. Fill in the URL correctly

1. Use the correct protocol: According to the type of resource that needs to be accessed, select the appropriate protocol to fill in the URL. If you are transmitting sensitive data or making online payments, it is best to choose secure HTTPS protocol.

2. Enter the correct domain name: Make sure the domain name is spelled correctly to avoid entering wrong characters or missing key parts.

3. Specify the appropriate port: Normally, the browser will automatically use the default port and there is no need to manually specify it; but if you need to access resources other than the default port, you need to explicitly specify the port number in the URL.

4. Determine the correct path: If the resource you want to access is located in a specific directory or folder on the server, the path must be specified correctly, including all required directory hierarchies.

5. Add query string: If you need to pass parameters in the URL, make sure the query string is in the correct format, use the "&" symbol to separate each parameter, and use "=" between the parameter name and parameter value. " symbols separated.

3. Use URL encoding

When filling in the URL, you need to pay attention to URL encoding special characters to ensure the correct transmission and parsing of the URL. URL encoding converts special characters into "%" Followed by two hexadecimal digits, for example, a space is encoded as " ", "#" is encoded as "#", etc.

4. Common Errors and Solutions

1. URL misspelling: Please check carefully whether the URL is spelled correctly to avoid errors such as character misplacement, omission or substitution.

2. Lack of protocol prefix: The URL must start with a protocol prefix, such as "http://" or "https://". The lack of protocol prefix will result in inability to access the target resource.

3. Error in using special characters: Some special characters, such as spaces, Chinese characters, etc., are not allowed in the URL and must be escaped using URL encoding.

4. Network connection problem: If the URL is filled in correctly but the target resource cannot be accessed, it may be due to network connection problems. You can try to reconnect or use a proxy or other methods.

5. Summary

Filling in the URL correctly is one of the key steps for browsing the web and obtaining resources. By following the correct URL structure, filling in the correct protocol, domain name, port, path, query string, etc., and using the URL Escape the encoding to ensure that we can accurately access the target resource. I hope this article will be helpful to you and enable you to use the Internet and obtain resources more smoothly.

The above is the detailed content of How to fill in the url address. For more information, please follow other related articles on the PHP Chinese website!