CloseableHttpClient 如何获取 HttpGet中的 请求
时间: 2023-12-19 09:31:02 浏览: 155
可以通过以下步骤获取HttpGet中的请求:
1. 创建一个 HttpGet 对象,设置请求的 URL:
```
HttpGet httpGet = new HttpGet("http://example.com/api");
```
2. 使用 CloseableHttpClient 对象执行 HttpGet 请求,返回 CloseableHttpResponse 对象:
```
CloseableHttpResponse response = client.execute(httpGet);
```
3. 从 CloseableHttpResponse 对象中获取请求信息:
```
HttpUriRequest request = response.getRequest();
```
现在,你可以使用 request 对象获取请求的方法、URI、头部信息等。例如,要获取请求的 URI,可以使用以下代码:
```
URI uri = request.getURI();
```
相关问题
使用CloseableHttpClient 用get请求去请求一个文件下载接口
可以使用 Apache 的 HttpClient 来实现。
以下是使用 CloseableHttpClient 发送 GET 请求并下载文件的示例代码:
```java
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
public class HttpClientExample {
public static void main(String[] args) throws Exception {
String url = "http://example.com/file/download?id=123";
String filePath = "/path/to/file"; // 文件保存路径
CloseableHttpClient httpclient = HttpClients.createDefault();
HttpGet httpget = new HttpGet(url);
CloseableHttpResponse response = httpclient.execute(httpget);
try {
HttpEntity entity = response.getEntity();
if (entity != null) {
InputStream inputStream = entity.getContent();
FileOutputStream outputStream = new FileOutputStream(new File(filePath));
byte[] buffer = new byte[1024];
int len = -1;
while ((len = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, len);
}
outputStream.flush();
outputStream.close();
}
EntityUtils.consume(entity);
} finally {
response.close();
}
}
}
```
以上代码使用 CloseableHttpClient 发送 GET 请求,获取接口返回的文件流,并将文件保存到指定路径。你可以根据实际情况修改请求 URL、文件保存路径等参数。
类似CloseableHttpClient 的http客户端请求类
类似CloseableHttpClient的HTTP客户端请求类有很多,其中比较常用的有以下几种:
1. HttpURLConnection:Java自带的HTTP客户端请求类,可以通过URL.openConnection()方法获取连接对象,支持GET、POST等请求方式。
2. OkHttp:一个开源的HTTP客户端请求库,支持同步、异步请求,支持连接池、缓存等功能。
3. Apache HttpClient:一个开源的HTTP客户端请求库,支持同步、异步请求,支持连接池、缓存等功能,与CloseableHttpClient类似。
4. Retrofit:一个基于OkHttp的RESTful风格的HTTP客户端请求库,支持注解方式定义请求接口,支持同步、异步请求,支持连接池、缓存等功能。
以上是常用的HTTP客户端请求类,每个类都有其特点和适用场景,具体使用需要根据实际情况选择。
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