[英]Gmail API - Download attachments from new mails required SCOPES - JAVA
I work on app that download attachments from new messages using GMAIL API .我在使用GMAIL API从新消息中下载附件的应用程序上工作。 I already made app with JavaMail but have to avoid using IMAP protocol.
我已经使用JavaMail制作了应用程序,但必须避免使用IMAP协议。
I successfully logged into mail account with Oauth2 , but now I need help with fetching new mails and downloading attachments.我使用Oauth2成功登录了邮件帐户,但现在我需要帮助来获取新邮件和下载附件。 I saw example code where we search for messages by ID but its not usable in this situation.
我看到了示例代码,其中我们按 ID 搜索消息,但在这种情况下它不可用。
EDIT 1: Code that I have is same as code from, just separated in classes Quickstart编辑 1:我拥有的代码与来自的代码相同,只是在类快速入门中分开
EDIT 2:编辑2:
String user = "me";
ListMessagesResponse listMessageResponse = service.users().messages().list(user).setQ("is:unseen").execute();
List<Message> list = listMessageResponse.getMessages();
for(Message m : list) {
List<MessagePart> part = m.getPayload().getParts();
for(MessagePart p: part) {
if(p.getFilename()!=null && p.getFilename().length()>0) {
System.out.println(p.getFilename());
}
}
}
I get error for this line我收到这条线的错误
ListMessagesResponse listMessageResponse = service.users().messages().list(user).setQ("is:unseen").execute();
Exception in thread "main" com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
{
"code" : 403,
"errors" : [ {
"domain" : "global",
"message" : "Insufficient Permission",
"reason" : "insufficientPermissions"
} ],
"message" : "Insufficient Permission"
}
at com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:150)
at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:113)
at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:40)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest$1.interceptResponse(AbstractGoogleClientRequest.java:451)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1089)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:549)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:482)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:599)
at Main.main(Main.java:64)
EDIT 3:编辑 3:
Made SCOPES
working with replacing GMAIL_LABELS
with GMAIL_READONLY
, I think I successfully fetched unseen mails, now I have somehow to download attachments.让
SCOPES
使用GMAIL_READONLY
替换GMAIL_LABELS
,我想我成功地获取了看不见的邮件,现在我可以以某种方式下载附件。
ListMessagesResponse listMessageResponse = service.users().messages().list(user).setQ("is:unseen").execute();
listMessageresponse
is not null
, while list
equals null
listMessageresponse
不是null
,而list
等于null
List<Message> list = listMessageResponse.getMessages();
You have a permission issue (as stated by the exception).您有权限问题(如例外所述)。 Permissions can be obtained by requesting a SCOPE when authenticating.
认证时可通过请求 SCOPE 来获得权限。 If you are using the sample from the quickstart, you will see they are using the
GMAIL_LABELS
scope:如果您使用的是快速入门中的示例,您将看到他们使用的是
GMAIL_LABELS
scope:
private static final List<String> SCOPES = Collections.singletonList(GmailScopes.GMAIL_LABELS);
To get the email content you need to add more scopes, ie GMAIL_READONLY
or others scope allowing to access emails (see GmailScopes ).要获得 email 内容,您需要添加更多范围,即
GMAIL_READONLY
或其他 scope 允许访问电子邮件(请参阅GmailScopes )。
Depending on how you create your credentials/token you might not be allowed to these scopes (then just update your settings in your API settings for the proper scopes)根据您创建凭据/令牌的方式,您可能不允许进入这些范围(然后只需更新 API 设置中的设置以获取适当的范围)
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