java url ?param
时间: 2024-01-17 17:05:30 浏览: 37
A Java URL with a parameter is a uniform resource locator that includes a parameter to be passed to the server when requesting a resource. The format of a Java URL with a parameter is as follows:
http://example.com/resource?param=value
In this example, "http://example.com" is the base URL, "/resource" is the path to the resource being requested, "?" indicates the start of the parameter string, "param" is the name of the parameter being passed, and "value" is the value of the parameter.
Java allows developers to easily construct URLs with parameters using the built-in java.net.URL class. For example, the following Java code creates a URL with two parameters:
```
import java.net.URL;
import java.net.URLEncoder;
public class Example {
public static void main(String[] args) throws Exception {
String base = "http://example.com/resource";
String param1 = "param1";
String value1 = "value1";
String param2 = "param2";
String value2 = "value2";
String urlStr = base + "?" + param1 + "=" + URLEncoder.encode(value1, "UTF-8") + "&" + param2 + "=" + URLEncoder.encode(value2, "UTF-8");
URL url = new URL(urlStr);
// use the URL to request the resource
}
}
```
In this example, the URLEncoder class is used to encode the parameter values to ensure that they are properly formatted for transmission over the network.
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