gmail 接入

google cloud api，谁用谁傻逼

1. 如果smtp接入完全不用这么麻烦，而且没啥区别

2. 具体过程忘了，代码如下

记得在目录下添加credentials, 依稀记得也可以通过环境变量指定位置

Linux、macOS：$HOME/.config/gcloud/application_default_credentials.json
*              Windows：%APPDATA%\gcloud\application_default_credentials.json

credentail样例如下

{

  "type": "service_account",

  "project_id": "metmake-emai",

  "private_key_id": "91ef937b8f00d13",

  "private_key": "-----BEGIN PRIVATE KEY-----\nMIIEvgIBADANBgCBak\n-----END PRIVATE KEY-----\n",

  "client_email": "email-287@metmake-emai.iam.gserviceaccount.com",

  "client_id": "114006151",

  "auth_uri": "https://accounts.google.com/o/oauth2/auth",

  "token_uri": "https://oauth2.googleapis.com/token",

  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",

  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/email-287%40metmake-emai.iam.gserviceaccount.com"

}

父类maven

<google-auth-library-oauth2-http.version>1.3.0</google-auth-library-oauth2-http.version>
<google-api-services-gmail.version>v1-rev110-1.25.0</google-api-services-gmail.version>

<javax-mail.version>1.4</javax-mail.version>

<!-- google email -->
<dependency>
    <groupId>com.google.auth</groupId>
    <artifactId>google-auth-library-oauth2-http</artifactId>
    <version>${google-auth-library-oauth2-http.version}</version>
</dependency>
<!-- google email https://mvnrepository.com/artifact/javax.mail/mail -->
<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
    <version>${javax-mail.version}</version>
</dependency>
<!-- google email https://mvnrepository.com/artifact/com.google.apis/google-api-services-gmail -->
<dependency>
    <groupId>com.google.apis</groupId>
    <artifactId>google-api-services-gmail</artifactId>
    <version>${google-api-services-gmail.version}</version>
</dependency>

子类maven

<!-- google email -->
<dependency>
    <groupId>com.google.auth</groupId>
    <artifactId>google-auth-library-oauth2-http</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.mail/mail -->
<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.apis/google-api-services-gmail -->
<dependency>
    <groupId>com.google.apis</groupId>
    <artifactId>google-api-services-gmail</artifactId>
</dependency>