废话不多说

一 官方文档

先看一下官方文档，https://learn.microsoft.com/zh-cn/graph/tutorials/java?context=outlook%2Fcontext&tabs=aad&tutorial-step=1

其中的代码，可以通过地址下载：https://developer.microsoft.com/en-us/graph/quick-start

二 授权方式

microsoft登录授权方式有很多种，

上面的是OAuth 2.0 授权代码授予  这个方式

但是这个方式，直接将enter code打印在在控制台，我没办法获取到（知道的小伙伴可以分享一下）。

因此我换成了 客户端密码  方式

三 代码示例

官方文档：https://learn.microsoft.com/zh-cn/entra/identity-platform/quickstart-daemon-app-java-acquire-token#register-and-download-your-quickstart-app

1 注册应用 （官方文档的step1）https://learn.microsoft.com/zh-cn/graph/tutorials/java?context=outlook%2Fcontext&tabs=aad&tutorial-step=1

2 应用授权

进入应用后，API权限--添加权限--选择权限（我选了Mail.ReadWrite和User.Read.All）

然后管理员点击 代表xxx授予管理员同意

3 获取应用配置信息

获取秘钥

证书和密码--新客户端密码--记录密码（密码只显示一次，请记录！），

虽然密码只显示一次，但我们可以生成新密码来获取新的。

获取信息

4 代码

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    -->
 
        <dependency>
            <groupId>com.microsoft.graph</groupId>
            <artifactId>microsoft-graph-auth</artifactId>
            <version>0.3.0</version>
        </dependency>
        <dependency>
            <!-- Include the sdk as a dependency -->
            <groupId>com.microsoft.graph</groupId>
            <artifactId>microsoft-graph-core</artifactId>
            <version>2.0.14</version>
        </dependency>

java代码

package com.example.test_project.graphtutorial;
 
import com.azure.identity.ClientSecretCredential;
import com.azure.identity.ClientSecretCredentialBuilder;
import com.microsoft.graph.authentication.IAuthenticationProvider;
import com.microsoft.graph.authentication.TokenCredentialAuthProvider;
import com.microsoft.graph.models.Message;
import com.microsoft.graph.models.User;
import com.microsoft.graph.requests.GraphServiceClient;
import com.microsoft.graph.requests.MessageCollectionPage;
import okhttp3.Request;
 
import java.io.IOException;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.time.format.FormatStyle;
import java.util.Arrays;
 
public class TestGraph {
    public static void main(String[] args) throws IOException {
 
        ClientSecretCredential clientSecretCredential = new ClientSecretCredentialBuilder()
                .clientId("clientId")
                .clientSecret("clientSecret")
                .tenantId("tenantId")
                .build();
        final TokenCredentialAuthProvider tokenCredAuthProvider = new TokenCredentialAuthProvider(
                Arrays.asList("https://graph.microsoft.com/.default")
                , clientSecretCredential
        );
        System.out.println("First Step Reached. ");
 
        User user = getUser(tokenCredAuthProvider);
        System.out.println("User : "+user.displayName+" , Email : "+user.mail);
 
        MessageCollectionPage mailMessage=getMail(tokenCredAuthProvider);
        for (Message message: mailMessage.getCurrentPage()) {
//            System.out.println("Id: " + message.id);
            System.out.println("Message: " + message.subject);
            System.out.println("  From: " + message.from.emailAddress.name);
            System.out.println("  Status: " + (message.isRead ? "Read" : "Unread"));
            System.out.println("  Received: " + message.receivedDateTime
                    // Values are returned in UTC, convert to local time zone
                    .atZoneSameInstant(ZoneId.systemDefault()).toLocalDateTime()
                    .format(DateTimeFormatter.ofLocalizedDateTime(FormatStyle.SHORT)));
        }
    }
 
    public static User getUser(IAuthenticationProvider authProvider) throws IOException {
        GraphServiceClient<Request> graphClient = GraphServiceClient.builder().authenticationProvider(authProvider).buildClient();
        User user=graphClient.users("你的邮箱")
                .buildRequest()
                .select("displayName,mail,userPrincipalName")
                .get();
        return user;
    }
 
    public static MessageCollectionPage getMail(IAuthenticationProvider authProvider) throws IOException {
        GraphServiceClient<Request> graphClient = GraphServiceClient.builder().authenticationProvider(authProvider).buildClient();
        MessageCollectionPage message = graphClient.users("你的邮箱")
//            .mailFolders("inbox")
                .messages()
                .buildRequest()
                .select("id,from,isRead,receivedDateTime,subject")
                .top(5)
                .orderBy("receivedDateTime DESC")
                .get();
        return message;
    }
}

四 结果