Java URL - 谷歌翻译请求返回403错误？ [英] Java URL - Google Translate request returns 403 error?
问题描述
我正在制作一个需要向Google Translate发送HTTP请求的Java控制台应用程序，以便从上述网站获取翻译。
I'm making a Java console application that needs to send an HTTP request to Google Translate to get a translation from the aforementioned site.
我的问题是，当我尝试使用 openStream（）从有效URL读取时收到403错误。
My problem, is that I receive a 403 error when I try to read from a valid URL, using openStream().
创建一个这个Translator类的实例，带有 Translator t = new Translator（）; 并调用 t.translate（en，ja，cheese ）; ，例如，应返回程序在页面上找到的翻译 http://translate.google.com/#en|ja|cheese ，似乎，但它会捕获IOException并返回此信息：
Creating an instance of this Translator class with Translator t = new Translator(); and calling t.translate("en", "ja", "cheese");, for example, should return the translation the program finds on the page http://translate.google.com/#en|ja|cheese, it seems, but instead it catches an IOException and returns this:
http://translate.google.com/#en|ja|cheese
服务器返回HTTP响应代码：403为网址： http://translate.google.com/#en|ja|cheche
任何ot都会发生类似的错误她的论点是创建有效的Google翻译网址。
A similar error occurs with any other arguments that create a valid Google Translate URL.
A 403错误显然意味着我被拒绝许可。这就是我想知道的。为什么我不能访问此页面，以及我必须做什么才能访问它？
A 403 error apparently means I am denied permission. This is what I want to know about. Why can't I access this page, and what must I do in order to access it?
我在网络浏览器中访问了该网站，并输入了该地址我的程序试图手动访问，但它工作;我不确定为什么我的程序无法访问该页面？将地址键入或复制/粘贴到我的FireFox导航栏中可以正常工作;看，如果这个是正确的，那么该网站可能希望我通过另一页上的链接？我怎么可能去那，如果这是我必须做的事情？
I've visited the site in my web browser, and entered the address that my program tries to access, manually, but it worked; I'm not sure why my program thus cannot access the page? Typing or copy/pasting the address into my FireFox navigation bar works; see, if this is correct, then the site may be wanting me to access the page via links on another page? How might I go about that, if that's what I must do?
这是代码，因为我觉得它可能会有所帮助..例外当我尝试从InputStream中的InputStreamReader创建一个BufferedReader时，似乎抛出了 translationURL.openStream（）：
Here's the code, as I think it may help.. the exception seems to be thrown when I try to create a BufferedReader from an InputStreamReader from the InputStream returned by translationURL.openStream():
import java.io.*;
import java.net.*;
public class Translator {
private final String googleTranslate = "http://translate.google.com/#";
public String translate( String from, String to, String item ) {
String translation = googleTranslate + from + '|' + to + '|' + item;
URL translationURL;
try { translationURL = new URL(translation); }
catch(MalformedURLException e) { return e.getMessage(); }
BufferedReader httpin;
String fullPage = "";
System.out.println(translation);
try {
httpin = new BufferedReader(
new InputStreamReader(translationURL.openStream()));
String line;
while((line=httpin.readLine()) != null) { fullPage += line + '\n'; }
httpin.close();
} catch(IOException e) { return e.getMessage(); }
int begin = fullPage.indexOf("<span class=\"\">");
int end = fullPage.indexOf("</span>");
return fullPage.substring(begin + 15, end);
}
public Translator() {}
}
我正在Ubuntu Linux 11.04上的Eclipse（GALILEO）中测试此代码，该代码与Wubi一起安装，具有可靠且可靠的无线Internet连接。我也试过在命令行中运行它，但行为是一样的。 java -version 让我这样：
I am testing this code in Eclipse (GALILEO) on Ubuntu Linux 11.04, installed with Wubi, with a working and reliable wireless Internet connection. I've also tried running it in the command line, but the behavior was the same. java -version got me this:
java version1.6.0_22
OpenJDK运行时环境（IcedTea6 1.10.2）（6b22-1.10.2-0ubuntu1~11.04.1）
OpenJDK 64位服务器VM（版本20.0-b11，混合模式）
推荐答案
他们正在查看用户代理字符串，并且可能他们不希望人们以编程方式执行此操作。
They are looking at the user agent string, and presumably they don't want people doing this programatically.
我确实让您的代码正常工作，但由于Google收取API访问费用，并且他们主动阻止不是浏览器的内容（基于用户代理字符串）我不会告诉你我是怎么做到的。
I did get your code working working, but since Google charges for the API access and they are actively blocking things that are not browsers (based on the user agent string) I won't tell you how I did it.
google搜索在Java中设置用户代理字符串会得到你想要的东西（事实上我找到了） Stackoverflow上的答案。
A google search for setting the user agent string in Java will get you what you want (as a matter of fact I found the answer here on Stackoverflow).
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