这次提供一些基础调用方式API

一 POM文件

        <!--    office 365    --><dependency><groupId>com.google.guava</groupId><artifactId>guava</artifactId><version>32.1.3-jre</version></dependency><dependency><groupId>com.azure</groupId><artifactId>azure-identity</artifactId><version>1.11.1</version><scope>compile</scope></dependency><dependency><groupId>com.microsoft.graph</groupId><artifactId>microsoft-graph</artifactId><version>5.77.0</version></dependency><!--    office 365    -->

二 Service / Impl

service

package com.xxx.mail.service;import com.microsoft.graph.models.Message;
import com.microsoft.graph.models.User;
import com.microsoft.graph.requests.MessageCollectionPage;import java.util.List;public interface IMailOffice365Service {User getUser(String email);MessageCollectionPage getMails(String email,int page,int size);Message getMailById(String email, String messageId);Message getMailByIdWithAttachment(Message message);void sendMail(String Sender , String recipient , String subject, String body) throws Exception;void sendMail(String Sender ,List<String> recipients ,String subject, String body) throws Exception;
}

impl

package com.xxx.mail.service.impl;import com.azure.identity.ClientSecretCredential;
import com.azure.identity.ClientSecretCredentialBuilder;
import com.xxx.mail.service.IMailOffice365Service;
import com.microsoft.graph.authentication.IAuthenticationProvider;
import com.microsoft.graph.authentication.TokenCredentialAuthProvider;
import com.microsoft.graph.models.*;
import com.microsoft.graph.requests.GraphServiceClient;
import com.microsoft.graph.requests.MessageCollectionPage;
import okhttp3.Request;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;import javax.annotation.PostConstruct;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Base64;
import java.util.List;@Service("mailOffice365Util")
public class MailOffice365Impl implements IMailOffice365Service {@Value("${mailOffice365.clientId}")private String clientId;@Value("${mailOffice365.tenantId}")private String tenantId;@Value("${mailOffice365.clientSecret}")private String clientSecret;@Value("${mailOffice365.graphUserScopes}")private String graphUserScopes;private IAuthenticationProvider authProvider;@PostConstructpublic void init(){auth();}/*** auth 授权*/private void auth(){ClientSecretCredential clientSecretCredential = new ClientSecretCredentialBuilder().clientId(clientId).tenantId(tenantId).clientSecret(clientSecret).build();authProvider = new TokenCredentialAuthProvider(Arrays.asList("https://graph.microsoft.com/.default"), clientSecretCredential);}/*** 获取用户信息* @param email* @return*/public User getUser(String email) {GraphServiceClient<Request> graphClient = GraphServiceClient.builder().authenticationProvider(authProvider).buildClient();User user=graphClient.users(email).buildRequest().select("displayName,mail,userPrincipalName").get();return user;}/*** 获取邮件* @param email* @return*/public MessageCollectionPage getMails(String email,int page,int size) {GraphServiceClient<Request> graphClient = GraphServiceClient.builder().authenticationProvider(authProvider).buildClient();MessageCollectionPage message = graphClient.users(email)
//            .mailFolders("inbox").messages().buildRequest().select("id,from,isRead,receivedDateTime,subject").skip(page*size).top(size).orderBy("receivedDateTime DESC").get();return message;}@Overridepublic Message getMailById(String email, String messageId) {GraphServiceClient<Request> graphClient = GraphServiceClient.builder().authenticationProvider(authProvider).buildClient();Message message = graphClient.users(email)
//            .mailFolders("inbox").messages().byId(messageId).buildRequest().select("id,from,body").expand("attachments").get();return message;}/*** 获取带有图片的邮件* @param message* @return*/@Overridepublic Message getMailByIdWithAttachment(Message message) {//图片展示String emailBody = message.body.content;for (Attachment attachment : message.attachments.getCurrentPage()){if (attachment.isInline.booleanValue()){if ((attachment instanceof FileAttachment) &&(attachment.contentType.contains("image"))){FileAttachment fileAttachment = (FileAttachment)attachment;byte[] contentBytes = fileAttachment.contentBytes;String imageContentIDToReplace = "cid:" + fileAttachment.contentId;emailBody = emailBody.replace(imageContentIDToReplace,String.format("data:image;base64,%s", Base64.getEncoder().encodeToString(contentBytes)));}}}message.body.content=emailBody;return message;}/*** 发送邮件* @param sender* @param recipient* @param subject* @param body* @throws Exception*/public void sendMail(String sender ,String recipient ,String subject, String body) throws Exception {List<String> recipients=List.of(recipient);sendMail(sender,recipients,subject,body);}/*** 发送邮件(多个收件人)* @param sender* @param recipients* @param subject* @param body* @throws Exception*/public void sendMail(String sender ,List<String> recipients ,String subject, String body) throws Exception {GraphServiceClient<Request> graphClient = GraphServiceClient.builder().authenticationProvider(authProvider).buildClient();// Ensure client isn't nullif (graphClient == null) {throw new Exception("Graph has not been initialized for user auth");}// Create a new messagefinal Message message = new Message();message.subject = subject;message.body = new ItemBody();message.body.content = body;message.body.contentType = BodyType.TEXT;if(recipients!=null && recipients.size()>0) {message.toRecipients=new ArrayList<>();recipients.forEach(x->{final Recipient toRecipient = new Recipient();toRecipient.emailAddress = new EmailAddress();toRecipient.emailAddress.address = x;message.toRecipients.add(toRecipient);});}// Send the messagegraphClient.users(sender).sendMail(UserSendMailParameterSet.newBuilder().withMessage(message).build()).buildRequest().post();}}

三 调用

读取邮箱的权限，在第一篇中有说，不赘述了。

package com.xxx.mail.controller;import com.xxx.common.core.domain.R;
import com.xxx.mail.service.IMailOffice365Service;
import com.microsoft.graph.models.Message;
import com.microsoft.graph.models.User;
import com.microsoft.graph.requests.MessageCollectionPage;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@Validated
@RequiredArgsConstructor
@RestController
@RequestMapping("/mail")
public class TestController {@AutowiredIMailOffice365Service mailOffice365Service;@GetMapping("/getUser")public R<User> getUser() {User user=mailOffice365Service.getUser("发送者邮箱");return R.ok(user);}@GetMapping("/getMails")public R<MessageCollectionPage> getMails() {MessageCollectionPage mails=mailOffice365Service.getMails("发送者邮箱",0,10);return R.ok(mails);}@GetMapping("/getMailById")public R<Message> getMailById(String messageId) {Message mail=mailOffice365Service.getMailById("发送者邮箱",messageId);//转换邮件中的图片mail=mailOffice365Service.getMailByIdWithAttachment(mail);return R.ok(mail);}@PostMapping("/sendMail")public R<Void> sendMail(String messageId) throws Exception {String Sender="发送者邮箱";String recipient="接收者邮箱" ;String subject="测试邮件";String body="这是一封测试邮件";mailOffice365Service.sendMail(Sender,recipient,subject,body);return R.ok();}
}