我是Salesforce开发人员,我们公司正计划将服务扩展到全球用户,因此我们决定使用Google翻译来改善客户体验。
我已经阅读了google api文档,但是,在请求GCP访问令牌时遇到了一个问题,该文档中提供的Google教程Google支持不同的语言,例如java,c#,python等。由于我们在使用apex(一种类型Salesforce平台脚本),我们无法使用您的库获取GCP令牌。
相反,不幸的是,我们也检查了“ OAuth 2.0 for Server Accounts”,但这两个都不对我有用。
有什么建议吗?
答案 0 :(得分:0)
我是通过以下代码获得令牌的,遇到的错误是由特殊字符编码引起的。
public with sharing class SwitchLanguageByGoogleAPIController {
private static final String ENDPOINT = '**';
private static final String TOKEN_ENDPOINT = 'https://accounts.google.com/o/oauth2/token';
private static final String SCOPE = 'https://www.googleapis.com/auth/cloud-platform';
private static final String PROJECT_ID = '**';
private static final String GLOSSARY_ID = '88';
private static final String LOCATION_ID = 'us-central1';
private static final String CLIENT_SECRET = '**';
private static final String PRIVATE_KEY = '**';
private static final String CLIENT_EMAIL = '**';
public static void translateByGlossary() {
Token token = getToken();
HttpRequest request = new HttpRequest();
request.setHeader('Content-Type', 'text/plain');
request.setEndpoint(ENDPOINT + PROJECT_ID + '/locations/' + LOCATION_ID + ':translateText?access_token=' + token.access_token);
request.setMethod('POST');
String contents = 'Personal Information, Middle Name e, first First Name';
String sourceLanguageCode = 'en';
String targetLanguageCode = 'zh';
request.setBody('{"sourceLanguageCode":"' + sourceLanguageCode + '","targetLanguageCode":"' + targetLanguageCode + '","contents":"'+ contents +'","glossaryConfig":{"glossary":"projects/' + PROJECT_ID +'/locations/' + LOCATION_ID + '/glossaries/' + GLOSSARY_ID + '"}}');
HTTP http = new HTTP();
HttpResponse reponse = http.send(request);
System.debug(reponse.getBody());
}
private static Token getToken() {
Http http = new Http();
HttpRequest req = new HttpRequest();
HttpResponse res = new HttpResponse();
//Making the call out
req.setEndpoint(TOKEN_ENDPOINT);
req.setMethod('POST');
req.setHeader('Content-Type','application/x-www-form-urlencoded');
string URLEncodedGrantType = encodingUtil.urlEncode('urn:ietf:params:oauth:grant-type:jwt-bearer','UTF-8');
string jwtSigned = generateJWT();
req.setBody('grant_type='+URLEncodedGrantType+'&assertion='+jwtSigned);
res = http.send(req);
system.debug('Response : '+res.getBody());
return (Token)JSON.deserialize(res.getBody(), Token.Class);
}
private static String generateJWT() {
Http http = new Http();
HttpRequest req = new HttpRequest();
HttpResponse res = new HttpResponse();
String JWTHeader = '{"typ":"JWT","alg":"RS256"}';
String Base64EncodedJWTHeader = EncodingUtil.base64Encode(Blob.valueOf(JWTHeader));
long issued_at = datetime.now().getTime()/1000;
long expires_at = datetime.now().addHours(1).getTime()/1000;
JWTClaimSet claimSet = new JWTClaimSet();
claimSet.iss = CLIENT_EMAIL;
claimSet.scope = SCOPE;
claimSet.aud = TOKEN_ENDPOINT;
claimSet.iat = issued_at;
claimSet.exp = expires_at;
String strClaimSetJSON = JSON.Serialize(claimSet);
String Base64EncodedClaimset = EncodingUtil.base64Encode(Blob.valueOf(strClaimSetJSON));
system.debug('Base64 Encoded Claimset::'+Base64EncodedClaimset);
Base64EncodedClaimset = PerformPostBase64Encode(Base64EncodedClaimset);
system.debug('persorm post Claimset::'+Base64EncodedClaimset);
string Base64EncodedString = Base64EncodedJWTHeader + '.' + Base64EncodedClaimset;
String algorithmName = 'RSA-SHA256';
Blob privateKey = EncodingUtil.base64Decode(PRIVATE_KEY);
Blob input = Blob.valueOf(Base64EncodedString);
Blob Blobsign = Crypto.sign(algorithmName, input , privateKey);
String base64EncodedSignature = EncodingUtil.base64Encode(Blobsign);
base64EncodedSignature = PerformPostBase64Encode(base64EncodedSignature);
system.debug('Base 64 encoded signature ::'+base64EncodedSignature );
system.debug('Encoded assertion : ' + Base64EncodedString+'.'+base64EncodedSignature);
string URLEncodedUTF8Assertion = encodingUtil.urlEncode(Base64EncodedString+'.'+base64EncodedSignature,'UTF-8');
return URLEncodedUTF8Assertion;
}
public static String PerformPostBase64Encode(String s)
{
s = s.Replace('+', '-');
s = s.Replace('/', '_');
s = s.Split('=')[0];
return s;
}
public class JWTClaimSet
{
public string iss {get;set;}
public string scope {get;set;}
public string aud {get;set;}
public Long exp {get;set;}
public Long iat {get;set;}
}
private class Token{
private String access_token;
private String token_type;
private String expires_in;
}
}