小编use*_*106的帖子

这是我的Gmail服务配置/工厂类:

import java.io.File;
import java.io.IOException;
import java.security.GeneralSecurityException;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.gmail.Gmail;
import com.google.api.services.gmail.GmailScopes;

public class GmailServiceFactoryBean {

    private @Autowired Environment env;

    private final NetHttpTransport transport;
    private final JacksonFactory jacksonFactory;

    public GmailServiceFactoryBean() throws GeneralSecurityException, IOException {
        this.transport = GoogleNetHttpTransport.newTrustedTransport();
        this.jacksonFactory = JacksonFactory.getDefaultInstance();
    }

    public Gmail getGmailService() throws IOException, GeneralSecurityException {
        return new Gmail.Builder(transport, jacksonFactory, getCredential())
                .setApplicationName(env.getProperty("gmail.api.application.name")).build();
    }

    private HttpRequestInitializer getCredential() throws IOException, GeneralSecurityException {
        File p12File = …