我正在尝试通过 Google Contacts API 和 Java 应用程序更新我的 Google Apps 用户的联系人。
我可以获取此特定用户的联系人,但如果我想更新某个联系人,则更新失败。
我的代码:
package com.haha;
import java.net.URL;
import com.google.gdata.client.*;
import com.google.gdata.client.Query.CustomParameter;
import com.google.gdata.client.authn.oauth.GoogleOAuthParameters;
import com.google.gdata.client.authn.oauth.OAuthHmacSha1Signer;
import com.google.gdata.client.authn.oauth.OAuthSigner;
import com.google.gdata.client.authn.oauth.OAuthParameters.OAuthType;
import com.google.gdata.client.contacts.*;
import com.google.gdata.data.contacts.ContactEntry;
import com.google.gdata.data.contacts.ContactFeed;
public class ContactsMain {
private static final String APP_NAME = "haha.com";
private static final String CONSUMER_KEY = "haha.com";
private static final String CONSUMER_SECRET = "123456";
private static final String SCOPE_CONTACTS = "https://www.google.com/m8/feeds/";
private static final String FEED_URL_CONTACTS = "https://www.google.com/m8/feeds/contacts/default/base";
private static final String MY_USER = "user@haha.com";
private static final String MAX_RESULTS = "10000";
public static void main(String[] args) {
try {
// Create the service
ContactsService myService = new ContactsService(APP_NAME);
// OAuth
GoogleOAuthParameters oauthParameters = new GoogleOAuthParameters();
oauthParameters.setOAuthConsumerKey(CONSUMER_KEY);
oauthParameters.setOAuthConsumerSecret(CONSUMER_SECRET);
oauthParameters.setScope(SCOPE_CONTACTS);
oauthParameters.setOAuthType(OAuthType.TWO_LEGGED_OAUTH);
OAuthSigner signer = new OAuthHmacSha1Signer();
// Authenticate the service
myService.setOAuthCredentials(oauthParameters, signer);
// Build the query
Query myQuery = new Query(new URL(FEED_URL_CONTACTS));
myQuery.addCustomParameter(new CustomParameter("xoauth_requestor_id", MY_USER));
myQuery.addCustomParameter(new CustomParameter("max-results", MAX_RESULTS));
// Get all contacts
ContactFeed resultFeed = myService.query(myQuery, ContactFeed.class);
for (ContactEntry entry : resultFeed.getEntries()) {
if (entry.hasName() && entry.getName().hasFamilyName()) {
if ((entry.getName().getFamilyName().getValue()).equals("Lastname")) {
System.out.println("Contact 'Lastname' was found");
entry.getName().getFamilyName().setValue("Lastname-EDIT");
entry.update();
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
Eclipse 的控制台输出:
Contact 'Lastname' was found
java.lang.NullPointerException: No authentication header information
at com.google.gdata.util.AuthenticationException.initFromAuthHeader(AuthenticationException.java:96)
at com.google.gdata.util.AuthenticationException.<init>(AuthenticationException.java:67)
at com.google.gdata.client.http.HttpGDataRequest.handleErrorResponse(HttpGDataRequest.java:608)
at com.google.gdata.client.http.GoogleGDataRequest.handleErrorResponse(GoogleGDataRequest.java:564)
at com.google.gdata.client.http.HttpGDataRequest.checkResponse(HttpGDataRequest.java:560)
at com.google.gdata.client.http.HttpGDataRequest.execute(HttpGDataRequest.java:538)
at com.google.gdata.client.http.GoogleGDataRequest.execute(GoogleGDataRequest.java:536)
at com.google.gdata.client.Service.update(Service.java:1563)
at com.google.gdata.client.Service.update(Service.java:1530)
at com.google.gdata.client.GoogleService.update(GoogleService.java:597)
at com.google.gdata.data.BaseEntry.update(BaseEntry.java:639)
at com.haha.ContactsMain.main(ContactsMain.java:60)
控制台输出的第一行证明可以读取联系人。ContactsMain.java:60 表示以下行:
entry.update();
有人知道我在这里做错了什么吗?在我想要更新之前,我是否必须向“条目”对象添加一些标记?
非常感谢每一个帮助。非常感谢,
马可