Java中如何处理HTTP分块传输

在Java中处理HTTP分块传输编码，您可以使用Java的内置库，如HttpURLConnection或者第三方库，如Apache HttpClient。下面是使用这两种方法处理HTTP分块传输的示例。

使用HttpURLConnection

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

public class HttpClientChunkedTransfer {

    public static void main(String[] args) throws IOException {
        URL url = new URL("http://example.com/chunked");
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");
        connection.setChunkedStreamingMode(1024); // 设置分块传输模式

        int responseCode = connection.getResponseCode();
        System.out.println("Response Code: " + responseCode);

        BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String inputLine;
        while ((inputLine = in.readLine()) != null) {
            System.out.println(inputLine);
        }
        in.close();
    }
}

使用Apache HttpClient

首先，您需要将Apache HttpClient库添加到项目的依赖项中。如果您使用Maven，可以在pom.xml文件中添加以下依赖：

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.13</version>
</dependency>

然后，您可以使用以下代码处理HTTP分块传输：

import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class HttpClientChunkedTransfer {

    public static void main(String[] args) throws IOException {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        HttpGet httpGet = new HttpGet("http://example.com/chunked");

        HttpResponse response = httpClient.execute(httpGet);
        System.out.println("Response Code: " + response.getStatusLine().getStatusCode());

        BufferedReader in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
        String inputLine;
        while ((inputLine = in.readLine()) != null) {
            System.out.println(inputLine);
        }
        in.close();
        httpClient.close();
    }
}

这两个示例都会从指定的URL获取数据，并处理分块传输编码。请注意，这些示例仅用于演示目的，实际应用中可能需要根据具体需求进行调整。