用Java处理下载 [英] Handling downloads in Java
本文介绍了用Java处理下载的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何使用Java中的HttpResponse处理下载?我向特定站点发出了HttpGet请求-该站点返回要下载的文件.如何处理此下载?InputStream似乎无法处理它(或者我使用的是错误的方法.)
How would I be able to handle downloads using HttpResponse in Java? I made an HttpGet request to a specific site - the site returns the file to be downloaded. How can I handle this download? InputStream doesn't seem to be able to handle it (or maybe I'm using it the wrong way.)
推荐答案
假设您实际上是在谈论 SSCCE :
Assuming you're actually talking about HttpClient, Here's an SSCCE:
package com.stackoverflow.q2633002;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
public class Test {
public static void main(String... args) throws IOException {
System.out.println("Connecting...");
HttpClient client = new DefaultHttpClient();
HttpGet get = new HttpGet("http://apache.cyberuse.com/httpcomponents/httpclient/binary/httpcomponents-client-4.0.1-bin.zip");
HttpResponse response = client.execute(get);
InputStream input = null;
OutputStream output = null;
byte[] buffer = new byte[1024];
try {
System.out.println("Downloading file...");
input = response.getEntity().getContent();
output = new FileOutputStream("/tmp/httpcomponents-client-4.0.1-bin.zip");
for (int length; (length = input.read(buffer)) > 0;) {
output.write(buffer, 0, length);
}
System.out.println("File successfully downloaded!");
} finally {
if (output != null) try { output.close(); } catch (IOException logOrIgnore) {}
if (input != null) try { input.close(); } catch (IOException logOrIgnore) {}
}
}
}
在这里工作正常.您的问题出在其他地方.
Works fine here. Your problem lies somewhere else.
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