Java GmailApi读取未读消息
我可以连接到gmail api,并且可以阅读标签。但是当我尝试读取消息时,出现了一个错误403(Java GmailApi读取未读消息,java,gmail-api,gmail-imap,Java,Gmail Api,Gmail Imap,我可以连接到gmail api,并且可以阅读标签。但是当我尝试读取消息时,出现了一个错误403(ListMessagesResponse listMessageResponse=service.users().messages().list(“me”).execute()) 我获得服务的代码: `final String CLIENT_ID = "////"; final String CLIENT_SECRET = "///////"; final String
ListMessagesResponse listMessageResponse=service.users().messages().list(“me”).execute()
)
我获得服务的代码:
`final String CLIENT_ID = "////";
final String CLIENT_SECRET = "///////";
final String APPLICATION_NAME = "///////////////";
final String REFRESH_TOKEN = "////////////////";
final java.io.File DATA_STORE_DIR = new java.io.File("/", "");
FileDataStoreFactory DATA_STORE_FACTORY;
final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
final List<Set<String>> SCOPES = Arrays.asList(GmailScopes.all());
HttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);
Credential credential = new GoogleCredential.Builder()
.setClientSecrets(CLIENT_ID, CLIENT_SECRET)
.setJsonFactory(JSON_FACTORY).setTransport(HTTP_TRANSPORT).build()
.setRefreshToken(REFRESH_TOKEN);
credential.refreshToken();
return new Gmail.Builder(
HTTP_TRANSPORT, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME)
.build();`
`final String CLIENT_ID=“/”;
最后一个字符串CLIENT_SECRET=“//”;
最终字符串应用程序\u NAME=“//”;
最终字符串刷新\u标记=“//”;
final java.io.File DATA_STORE_DIR=new java.io.File(“/”,”);
文件数据存储工厂数据存储工厂;
最终的JsonFactory JSON_FACTORY=JacksonFactory.getDefaultInstance();
final List SCOPES=Arrays.asList(GmailScopes.all());
HttpTransport HTTP_TRANSPORT=GoogleNetHttpTransport.newTrustedTransport();
DATA\u STORE\u FACTORY=新文件datastorefactory(DATA\u STORE\u DIR);
凭证凭证=新的GoogleCredential.Builder()
.setClientSecrets(客户端ID、客户端机密)
.setJsonFactory(JSON_FACTORY).setTransport(HTTP_TRANSPORT).build()
.setRefreshToken(刷新令牌);
credential.refreshtToken();
返回新的Gmail.Builder(
HTTP_传输、JSON_工厂、凭证)
.setApplicationName(应用程序名称)
.build()`
以及获取邮件的代码(我希望获取所有未读邮件并保存附件)
`ListMessagesResponse listMessageResponse=service.users().messages()
.list(“我”).execute();
List List=listMessageResponse.getMessages();
用于(消息混乱:列表){
System.out.println(mess.getRaw());
}`
看起来您正在尝试在执行授权调用之前刷新令牌
看看gmail api示例中的authorize()方法:
`final String CLIENT_ID = "////";
final String CLIENT_SECRET = "///////";
final String APPLICATION_NAME = "///////////////";
final String REFRESH_TOKEN = "////////////////";
final java.io.File DATA_STORE_DIR = new java.io.File("/", "");
FileDataStoreFactory DATA_STORE_FACTORY;
final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
final List<Set<String>> SCOPES = Arrays.asList(GmailScopes.all());
HttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);
Credential credential = new GoogleCredential.Builder()
.setClientSecrets(CLIENT_ID, CLIENT_SECRET)
.setJsonFactory(JSON_FACTORY).setTransport(HTTP_TRANSPORT).build()
.setRefreshToken(REFRESH_TOKEN);
credential.refreshToken();
return new Gmail.Builder(
HTTP_TRANSPORT, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME)
.build();`
`ListMessagesResponse listMessageResponse = service.users().messages()
.list("me").execute();
List<Message> list = listMessageResponse.getMessages();
for (Message mess : list) {
System.out.println(mess.getRaw());
}`