Google Translate V2 Java API throws JsonParseException when uses it behind proxy server

[Jason Xu]

Hi Joao & Any Google Translate V2 Experts,

 

Pls help how to resolve following problem.

 

My project# is: 27384690894

I used Google Java API downloaded from http://code.google.com/p/google-translate-api-v2-java/

1) google-translate-api-v2-java-core-0.52.jar

2) jackson-core-asl-1.9.0.jar

3) httpcore-4.1.2.jar

4) httpclient-4.1.2.jar

5) jackson-mapper-asl-1.9.0.jar

6) jackson-jaxrs-1.9.0.jar

7) jackson-xc-1.9.0.jar

8) slf4j-api-1.6.2.jar

9) commons-codec-1.4.jar

10) commons-lang3-3.0.1.jar

 

When I run following code from office behind company proxy server, it throws exception: JsonParseException: Unexpected character ('<' (code 60)). 

If I run it from home without proxy server(by removing proxy setting and httpClient), it works perfect.

 

public Class GTranslator {

     

     public static void main(String[] args) throws IOException, URISyntaxException, Exception {

     

     DefaultHttpClient httpclient = new DefaultHttpClient();
     HttpHost proxy = new HttpHost("myproxyserver.xxx.com",8080);  
     httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY,proxy);

 

     Translator  translator = new Translator("myAPIKey", httpclient);

     testTranslate("Hello","zh-CN");  // translate from English to simple chinese

 

     public static void testTranslate(String source, String targetLang) throws IOException, URISyntaxException, TranslatorException {
        Translation fromEnglish = translator.translate(source, "en", targetLang);  
        System.out.println(source + " in en = '" + fromEnglish.getTranslatedText() + "' in " + targetLang);

     }

}

 

Exception (line# are not same as above codes):

Exception in thread "main" org.codehaus.jackson.JsonParseException: Unexpected character ('<' (code 60)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
 at [Source: java.io.StringReader@9f5011; line: 1, column: 2]
 at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1291)
 at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:385)
 at org.codehaus.jackson.impl.JsonParserMinimalBase._reportUnexpectedChar(JsonParserMinimalBase.java:306)
 at org.codehaus.jackson.impl.ReaderBasedParser._handleUnexpectedValue(ReaderBasedParser.java:628)
 at org.codehaus.jackson.impl.ReaderBasedParser.nextToken(ReaderBasedParser.java:362)
 at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2761)
 at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2709)
 at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1854)
 at org.google.translate.api.v2.core.Translator.readResponse(Translator.java:274)
 at org.google.translate.api.v2.core.Translator.translate(Translator.java:124)
 at org.google.translate.api.v2.core.Translator.translate(Translator.java:87)
 at ncs.mom.gt.GTranslator.testTranslate(GTranslator.java:111)

 at ncs.mom.gt.GTranslator.main(GTranslator.java:79)

 

Note:

When I run it from home without  proxy server by changing following 4 lines to one and remove httpClient, translation works perfect.

Change:

     DefaultHttpClient httpclient = new DefaultHttpClient();
     HttpHost proxy = new HttpHost("myproxyserver.xxx.com",proxy_port#);  
     httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY,proxy);

     Translator  translator = new Translator("myAPIKey", httpclient);

To:

     Translator  translator = new Translator("myAPIKey");

 

 

Thanks in advance.

Jason

 

[Jason Xu]

Hi

 

Any Google Technical Support can help on this?

 

Did I miss out any thing in the setting ?

Do I have to set the user/pwd in httpClient, if yes, how to do this?

Any working code example to perfrom the translate API V2 Java call behind a proxy server ?

 

Thanks & Regards,

Jason

[João Martins]

I see you are using an unofficial wrapper for the Translate API. Were you able to see what the response message is like? Seems like a response is sent by the proxy server, just not in valid JSON.

Also, does your API key allow access to any referrer?

[Jason Xu]

Hi Joao,

 

Thanks for your reply.

 

I finally get it working.

 

Just to share with all.

1) I get the latest Google Translate offical wrapper.

2) Download and replace jar file jackson-mapper-asl-1.9.0.jar with version jackson-mapper-asl-1.9.2.jar.

3) It is working now.

 

 

Best Regards,

Jason