我需要使用oAuth与
Viagogo website连接.参考他们的
documentation,我需要创建一个类似于以下的请求
Using the example in step 1A,this means you may generate a signature base string that looks like the following: GET&http%3A%2F%2Fapi.viagogo.net%2FPublic%2FSimpleOAuthAccessRequest&oauth_consumer_key%3Dtestkey%26oauth_nonce%3Dmyn0nc3%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1292404912%26oauth_version%3D1.0%26scope%3DAPI.Public
我使用以下代码,但是当我评论行1,2它返回未经授权的错误,当我使用它,它显示oauthService.signRequest返回void.
TradeKingAPI.java
import org.scribe.builder.api.DefaultApi10a;
import org.scribe.model.Token;
public class TradeKingAPI extends DefaultApi10a {
@Override
public String getRequestTokenEndpoint() {
return "http://api.viagogo.net/Public/SimpleOAuthAccessRequest";
}
@Override
public String getAccesstokenEndpoint() {
return "http://api.viagogo.net/Public/SimpleOAuthAccessRequest";
}
@Override
public String getAuthorizationUrl(Token requestToken) {
return "http://api.viagogo.net/Public/SimpleOAuthAccessRequest";
}
}
main.java
import org.scribe.builder.ServiceBuilder;
import org.scribe.model.OAuthRequest;
import org.scribe.model.Response;
import org.scribe.model.Token;
import org.scribe.model.Verb;
import org.scribe.oauth.OAuthService;
import api.TradeKingAPI;
import org.scribe.builder.api.DefaultApi10a;
import org.scribe.model.OAuthConstants;
import org.scribe.oauth.OAuthService;
........
OAuthService oauthService = new ServiceBuilder()
.provider(TradeKingAPI.class)
.apiKey("My consumer key")
.apiSecret("My secret")
.scope("API.Public")
.build();
Long seconds = (System.currentTimeMillis() / 1000);
System.out.println(">>>" + seconds);
String stSeconds = seconds.toString();
OAuthRequest request = new OAuthRequest(Verb.GET,"http://api.viagogo.net/Public
/SimpleOAuthAccessRequest");
request.addOAuthParameter(OAuthConstants.CONSUMER_KEY,"My consumer key");
request.addOAuthParameter(OAuthConstants.NONCE,"myn0nc3");
request.addOAuthParameter(OAuthConstants.SIGN_METHOD,"HMAC-SHA1");
request.addOAuthParameter(OAuthConstants.TIMESTAMP,seconds.toString());
request.addOAuthParameter(OAuthConstants.VERSION,"1.0");
request.addOAuthParameter("scope","API.Public");
1 String signature = oauthService.signRequest(OAuthConstants.EMPTY_TOKEN,request);
2 request.addOAuthParameter(OAuthConstants.SIGNATURE,signature);
Response response = request.send();
System.err.println(">>" + response.isSuccessful());
System.err.println(">>" + response.getMessage());
System.err.println(">>" + response.getBody());
解决方法
从我从Viagogo公共API访问文档中了解到,您在步骤1中获得的令牌相当于完整的OAuth 1.0a“舞蹈”中的请求令牌.
所以,你应该可以使用scribe-java内部类来获取这个令牌,而不用手动.唯一的区别是,在抄写员中,此请求还向OAuth服务器发送一个回呼URL,用于OAuth“舞蹈”的下一步.
由于我无法获得消费者帐户,我只能在此做出假设.所以我们有两种情况：
情况1：Viagogo服务器容忍额外的参数(即回叫URL)
所以你可以用这个代码去
import org.scribe.builder.api.DefaultApi10a;
import org.scribe.model.Token;
public class TradeKingAPI extends DefaultApi10a {
@Override
public Verb getRequestTokenVerb()
{
return Verb.GET;
}
@Override
public String getRequestTokenEndpoint() {
return "http://api.viagogo.net/Public/SimpleOAuthAccessRequest";
}
@Override
public String getAccesstokenEndpoint() {
return "none";
}
@Override
public String getAuthorizationUrl(Token requestToken) {
return "none";
}
}
那么你的呼叫代码将是：
OAuthService service = new ServiceBuilder()
.provider(TradeKingAPI.class)
.signatureType(QueryString)
.apiKey("My consumer key")
.apiSecret("My secret")
.scope("API.Public")
.build();
Token requestToken = service.getRequestToken();
//make your API calls
OAuthRequest request = new OAuthRequest(Verb.GET,"http://api.viagogo.net/Public/Event/235");
service.signRequest(requestToken,request);
Response response = request.send();
System.out.println(response.getBody());
但是正如我所说,如果Viagogo安全性有点严格,并且拒绝无用的参数oauth_callback,则需要切换到方案2
情景2：建立自己的OAuthService
在这种情况下,您必须创建一个新的OAuthService,以避免处理OAuthCallback参数.
import org.scribe.builder.api.DefaultApi10a;
import org.scribe.model.*;
import org.scribe.oauth.OAuth10aServiceImpl;
import java.util.Map;
public class OAuth10aServiceForViagogo extends OAuth10aServiceImpl {
private OAuthConfig config;
private DefaultApi10a api;
public OAuth10aServiceForViagogo(DefaultApi10a api,OAuthConfig config) {
super(api,config);
this.api = api;
this.config = config;
}
private void addOAuthParams(OAuthRequest request,Token token) {
request.addOAuthParameter(OAuthConstants.TIMESTAMP,api.getTimestampService().getTimestampInSeconds());
request.addOAuthParameter(OAuthConstants.NONCE,api.getTimestampService().getNonce());
request.addOAuthParameter(OAuthConstants.CONSUMER_KEY,config.getApiKey());
request.addOAuthParameter(OAuthConstants.SIGN_METHOD,api.getSignatureService().getSignatureMethod());
request.addOAuthParameter(OAuthConstants.VERSION,getVersion());
request.addOAuthParameter(OAuthConstants.ScopE,config.getScope());
request.addOAuthParameter(OAuthConstants.SIGNATURE,getSignature(request,token));
}
private String getSignature(OAuthRequest request,Token token) {
String baseString = api.getBaseStringExtractor().extract(request);
String signature = api.getSignatureService().getSignature(baseString,config.getApiSecret(),token.getSecret());
return signature;
}
private void appendSignature(OAuthRequest request) {
for (Map.Entry<String,String> entry : request.getoauthParameters().entrySet()) {
request.addquerystringparameter(entry.getKey(),entry.getValue());
}
}
@Override
public Token getRequestToken(RequestTuner tuner) {
OAuthRequest request = new OAuthRequest(api.getRequestTokenVerb(),api.getRequestTokenEndpoint());
addOAuthParams(request,OAuthConstants.EMPTY_TOKEN);
appendSignature(request);
Response response = request.send(tuner);
String body = response.getBody();
return api.getRequestTokenExtractor().extract(body);
}
}
调用createService时,TrakingApi类将略有不同,以创建一个OAuth10aServiceForViagogo：
import org.scribe.builder.api.DefaultApi10a;
import org.scribe.model.Token;
public class TradeKingAPI extends DefaultApi10a {
@override
public OAuthService createService(OAuthConfig config)
{
return new OAuth10aServiceForViagogo(this,config);
}
@Override
public Verb getRequestTokenVerb()
{
return Verb.GET;
}
@Override
public String getRequestTokenEndpoint() {
return "http://api.viagogo.net/Public/SimpleOAuthAccessRequest";
}
@Override
public String getAccesstokenEndpoint() {
return "none";
}
@Override
public String getAuthorizationUrl(Token requestToken) {
return "none";
}
}
那么你的通话代码将是一样的：
OAuthService service = new ServiceBuilder()
.provider(TradeKingAPI.class)
.signatureType(QueryString)
.apiKey("My consumer key")
.apiSecret("My secret")
.scope("API.Public")
.build();
Token requestToken = service.getRequestToken();
//make your API calls
OAuthRequest request = new OAuthRequest(Verb.GET,"http://api.viagogo.net/Public/Event/235");
service.signRequest(requestToken,request);
Response response = request.send();
System.out.println(response.getBody());
我没有测试所有这些代码,因为我不能访问消费者和秘密密钥,但它应该接近你所需要的.