那些遇到过的问题

使用 Oauth 连接到 Google Compute Engine

Jan*_*ert 5 java google-api-java-client google-compute-engine google-oauth

我正在尝试使用 Java 连接到 Google Compute Engine，但出现的异常对我来说意义不大。

我下面的例子说明了以下内容：

/** Authorizes the installed application to access user's protected data. */
private static Credential authorize() throws Exception {
  // load client secrets
  GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY,
      new InputStreamReader(CalendarSample.class.getResourceAsStream("/client_secrets.json")));
  // set up authorization code flow
  GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
      httpTransport, JSON_FACTORY, clientSecrets,
      Collections.singleton(CalendarScopes.CALENDAR)).setDataStoreFactory(dataStoreFactory)
      .build();
  // authorize
  return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
}
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为了获取包含凭据的 json 文件，我访问 cloud.google.com，转到控制台中的我的应用程序，然后单击凭据，然后单击Create new ClientId、选择Service Account和JSON Key。

这会下载一个_________.json文件。

在 a 中public static void main(String ... args) throws Exception {，我有以下代码来读取凭据文件：

GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY,
                new FileReader("________9f.json"));
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执行 aSystem.out.println(clientSecrets);打印出整个 json 文件，其中包含key private_key_id、client_email和client_id。type

现在，如果我继续使用示例代码：

// set up authorization code flow
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
        httpTransport, JSON_FACTORY, clientSecrets,
                    Collections.singleton(ComputeScopes.COMPUTE)).setDataStoreFactory(dataStoreFactory).build();

// authorize
new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
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这给了我以下堆栈跟踪：

com.google.api.client.repackaged.com.google.common.base.Preconditions.checkArgument(Preconditions.java:76) com.google.api.client.util 线程“main”java.lang.IllegalArgumentException 中出现异常.Preconditions.checkArgument(Preconditions.java:37) 位于 com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets.getDetails(GoogleClientSecrets.java:82) 位于 com.google.api.client.googleapis.auth.oauth2 .GoogleAuthorizationCodeFlow$Builder.(GoogleAuthorizationCodeFlow.java:195) 在 com.mycee.TestGoogle.main(TestGoogle.java:52) 在 sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法) 在 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:57) 在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 在 java.lang.reflect.Method.invoke(Method.java:606) 在 com.intellij.rt.execution.application.AppMain.main （应用程序主.java：140）

缺少的变量（目前都是静态变量）如下：

JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
FileDataStoreFactory dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR);
java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"), ".store/compute_engine_sample");
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我正在尝试通过 Java 管理我的 Google 计算引擎实例，知道我在 Oath 身份验证方面做错了什么吗？

更新：

根据要求 pom.xml：

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.jvaas</groupId>
    <artifactId>jvaas-cloud</artifactId>
    <packaging>war</packaging>
    <version>1.0.0</version>
    <name>jVaaS Cloud</name>
    <properties>
        <jclouds.version>1.9.0</jclouds.version>
        <project.http.version>1.19.0</project.http.version>
        <project.oauth.version>1.19.0</project.oauth.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.google.http-client</groupId>
            <artifactId>google-http-client-jackson2</artifactId>
            <version>${project.http.version}</version>
        </dependency>
        <dependency>
            <groupId>com.google.oauth-client</groupId>
            <artifactId>google-oauth-client-jetty</artifactId>
            <version>${project.oauth.version}</version>
        </dependency>
        <dependency>
            <groupId>com.google.apis</groupId>
            <artifactId>google-api-services-compute</artifactId>
            <version>v1-rev27-1.19.0</version>
        </dependency>
    </dependencies>
</project>
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默认包中的 TestGoogle.java（kots.json位于src/main/resources）：

import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.compute.Compute;
import com.google.api.services.compute.ComputeScopes;
import com.google.api.services.compute.model.Instance;
import com.google.api.services.compute.model.InstanceList;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.List;

public class TestGoogle {

    private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"), ".store/compute_engine_sample");
    private static FileDataStoreFactory dataStoreFactory;
    private static HttpTransport httpTransport;
    private static final String zoneName = "us-central1-a";
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
    private static final List<String> SCOPES = Arrays.asList(ComputeScopes.COMPUTE_READONLY);

    public static void main(String... args) throws Exception {

        httpTransport = GoogleNetHttpTransport.newTrustedTransport();
        dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR);

        InputStream in = TestGoogle.class.getResourceAsStream("/kots.json");

        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));
        GoogleAuthorizationCodeFlow flow = // <- fails here
                new GoogleAuthorizationCodeFlow.Builder(
                        httpTransport, JSON_FACTORY, clientSecrets, SCOPES)
                        .setDataStoreFactory(dataStoreFactory)
                        .setAccessType("online").setApprovalPrompt("auto")
                        .build();

        new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");

    }
}
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完整的堆栈跟踪：

Exception in thread "main" java.lang.IllegalArgumentException
    at com.google.api.client.repackaged.com.google.common.base.Preconditions.checkArgument(Preconditions.java:76)
    at com.google.api.client.util.Preconditions.checkArgument(Preconditions.java:37)
    at com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets.getDetails(GoogleClientSecrets.java:82)
    at com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow$Builder.<init>(GoogleAuthorizationCodeFlow.java:195)
    at TestGoogle.main(TestGoogle.java:38)
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反编译相关的类文件，这些是相关的代码片段：

GoogleAuthorizationCodeFlow.java：195

public Builder(HttpTransport transport, JsonFactory jsonFactory, GoogleClientSecrets clientSecrets, Collection<String> scopes) {
    super(BearerToken.authorizationHeaderAccessMethod(), transport, jsonFactory, new GenericUrl("https://accounts.google.com/o/oauth2/token"), new ClientParametersAuthentication(clientSecrets.getDetails().getClientId(), clientSecrets.getDetails().getClientSecret()), clientSecrets.getDetails().getClientId(), "https://accounts.google.com/o/oauth2/auth");
    this.setScopes(scopes);
}
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GoogleClientSecrets.java：82

public GoogleClientSecrets.Details getDetails() {
    Preconditions.checkArgument(this.web == null != (this.installed == null));
    return this.web == null?this.installed:this.web;
}
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先决条件.java：37

public static void checkArgument(boolean expression) {
    com.google.api.client.repackaged.com.google.common.base.Preconditions.checkArgument(expression);
}
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先决条件.java：76

public static void checkArgument(boolean expression) {
    if(!expression) {
        throw new IllegalArgumentException();
    }
}
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kots.json 屏蔽了所有敏感数据：

{
  "private_key_id": "________________________________________",
  "private_key": "-----BEGIN PRIVATE KEY-----\n__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________\n-----END PRIVATE KEY-----\n",
  "client_email": "_____________________________________________@developer.gserviceaccount.com",
  "client_id": "_____________________________________________.apps.googleusercontent.com",
  "type": "service_account"
}
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当我在 cloud.google.com 中单击此按钮时生成 kots.json

在此输入图像描述

更新，似乎我的 json 文件不正确，这种格式为我修复了它（从与 @We are Borg 的对话中复制）：

{"installed": {
    "client_id": "yourid",
    "auth_uri": "https://accounts.google.com/o/oauth2/auth",
    "token_uri": "https://accounts.google.com/o/oauth2/token",
    "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
    "client_email": "",
    "client_x509_cert_url": "",
    "client_secret": "yoursecret",
    "redirect_uris": ["urn:ietf:wg:oauth:2.0:oob", "http://tooltank.de"]
}}
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正确的下载位置是创建一个新的客户端 ID 并选择已安装的应用程序。

We *_*org 2

事实上你不是，我也曾因 Google Drive 问题以类似的方式受到骚扰，但这段代码对我有用。我知道您会认为您的代码是相同的，但只需尝试一下即可。

private static final List<String> SCOPES =
            Arrays.asList(DriveScopes.DRIVE);
     @Override
        public Credential authorize() throws IOException {
            InputStream in =
                    DriveQuickstartImpl.class.getResourceAsStream("/client_secret.json");
            GoogleClientSecrets clientSecrets =
                    GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));

            GoogleAuthorizationCodeFlow flow =
                    new GoogleAuthorizationCodeFlow.Builder(
                            HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES)
                            .setDataStoreFactory(DATA_STORE_FACTORY)
                            .setAccessType("online").setApprovalPrompt("auto")
                            .build();
            Credential credential = new AuthorizationCodeInstalledApp(
                    flow, new LocalServerReceiver()).authorize("user");
            if(credential!=null && credential.getRefreshToken() != null){
                storeCredentials(credential);
            }
           return credential;

        }
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如果它不起作用，请告诉我，我将删除它，我的 client_secret 位于资源文件夹中。

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9 年，10 月 前
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