commons io 403 for URL但httpclient还可以

时间:2013-02-21 06:44:22

标签: java http httpclient http-status-code-403 apache-commons-io

公共代码:

String resultURL = String.format(GOOGLE_RECOGNIZER_URL, URLEncoder.encode("hello", "UTF-8"), "en-US");
URI uri = new URI(resultURL);
byte[] resultIO = IOUtils.toByteArray(uri);

我遇到了这个例外:

Exception in thread "main" java.io.IOException: Server returned HTTP response code: 403 for URL: http://translate.google.cn/translate_tts?ie=UTF-8&q=hello&tl=en-US&total=1&idx=0&textlen=3
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1436)
    at org.apache.commons.io.IOUtils.toByteArray(IOUtils.java:654)
    at org.apache.commons.io.IOUtils.toByteArray(IOUtils.java:635)
    at org.apache.commons.io.IOUtils.toByteArray(IOUtils.java:617)
    at com.renren.intl.soundsns.simsimi.speech.ttsclient.impl.GoogleTTSClient.main(GoogleTTSClient.java:70)

但是当我使用httpclient时,结果还可以。

String resultURL = String.format(GOOGLE_RECOGNIZER_URL, URLEncoder.encode(text, "UTF-8"), "en-US");

HttpClient client = new HttpClient();

GetMethod g = new GetMethod(resultURL);

client.executeMethod(g);

byte[] resultByte = g.getResponseBody();

这是怎么发生的?

提前感谢:)

maven依赖项:

<dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.4</version>
</dependency>
<dependency>
        <groupId>commons-httpclient</groupId>
        <artifactId>commons-httpclient</artifactId>
        <version>3.1</version>
</dependency>

1 个答案:

答案 0 :(得分:5)

Jon Skeet是对的!

对于我来说,java.net.URL JVM传递下一个标题:

User-Agent: Java/1.7.0_10
Host: translate.google.cn
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive

对于Apache HttpClient:

User-Agent: Jakarta Commons-HttpClient/3.1
Host: translate.google.cn

如果更改,则为java.net.URL的用户代理:

System.setProperty("http.agent", "Jakarta Commons-HttpClient/3.1");

请求成功,没有HTTP 403。

如果您的用户代理以Java开头,则看起来会出现403错误。任何模式为Java.*的用户代理都会抛出403错误。但如果您使用此模式.+Java.*一切正常。