Java中OAuth2.0第三方授权原理与实战

RFC6749

OAuth2的官方文档在RFC6749：https://datatracker.ietf.org/doc/html/rfc6749

以王者荣耀请求微信登录的过程为例

• A：Client申请访问用户资源
• B：用户授权（过程较复杂）一次有效
• C：Client向Server请求一个长时间有效的token
• D：返回token
• E：使用token访问资源

OAuth 2.0授权4大模式

授权码模式：完整、严密，第三方认证和授权的最主流实现

• A：APP请求微信登录
• B：用户信息验证
• C：返回只能使用一次的授权码
• D：APP把授权码发给后台服务，服务请求微信登录请求一个长期有效的token
• E：返回长期有效的token

token只有APP的后台服务和微信的后台才有，二者之间使用token通信，保证数据不易泄露到后台黑客

简化模式：令牌用户可见，移动端的常用实现手段

• A：APP请求微信登录
• B：用户信息验证
• C：直接返回一个长期有效的token

密码模式：用户名密码都返回

• A：用户把用户名 + 密码发送给APP
• B：APP可以直接用账号 + 密码访问微信后台

客户端模式：后台内容应用之间进行访问

微信登录会为APP分配一个内部的特定用户名和密码，APP用这个账号 + 密码和微信沟通，微信返回一个token，APP可以用这个token做很多部门自身的事情

合同到期后的续约机制

通常拿到Access token时还会拿到一个Refresh token，可以用来延长token的有效期

• F：token已过期
• G：使用Refresh token和微信登录沟通，尝试延长token
• H：重新返回一个新的token

OAuth2.0第三方授权实战

oauth-client

表示王者荣耀端

pom文件：

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>2.4.0</version>
  <relativePath/> <!-- lookup parent from repository -->
</parent>

<groupId>org.example</groupId>
<artifactId>oauth-client</artifactId>
<version>1.0-SNAPSHOT</version>
<description>Demo project for Spring Boot</description>

<properties>
  <maven.compiler.source>8</maven.compiler.source>
  <maven.compiler.target>8</maven.compiler.target>
  <spring-cloud.version>2020.0.0-M5</spring-cloud.version>
</properties>

<dependencies>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-oauth2</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-security</artifactId>
  </dependency>
  
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
  </dependency>
</dependencies>

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-dependencies</artifactId>
      <version>${spring-cloud.version}</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

<build>
  <plugins>
    <plugin>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-maven-plugin</artifactId>
    </plugin>
  </plugins>
</build>

<repositories>
  <repository>
    <id>spring-milestones</id>
    <name>Spring Milestones</name>
    <url>https://repo.spring.io/milestone</url>
  </repository>
</repositories>

</project>

SpringBoot的经典启动类：

package com.wjw.oauthclient;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class OauthClientApplication {
  public static void main(String[] args) {
      SpringApplication.run(OauthClientApplication.class, args);
  }
}

创建OAuth2的配置类：

package com.wjw.oauthclient.config;

import org.springframework.boot.autoconfigure.security.oauth2.client.EnableOAuth2Sso;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

//激活OAuth2 SSO客户端
@Configuration
@EnableOAuth2Sso
public class SecurityConfig extends WebSecurityConfigurerAdapter {
  @Override
  protected void configure(HttpSecurity http) throws Exception {
      http.authorizeRequests()
          .anyRequest()
          .authenticated()
          .and()
          .csrf()
          .disable();
  }
}

配置文件application.yaml：

security.oauth2.client.client-secret=my_client_secret
security.oauth2.client.client-id=my_client_id
security.oauth2.client.user-authorization-uri=http://localhost:9090/oauth/authorize
security.oauth2.client.access-token-uri=http://localhost:9090/oauth/token
security.oauth2.resource.user-info-uri=http://localhost:9090/user

server.port=8080

server.servlet.session.cookie.name=ut

• 定义用户id为my_client_id，密码为my_client_secret
• 定义“微信登录服务”为：http://localhost:9090/oauth/authorize
• 请求长期有效token的地址为：http://localhost:9090/oauth/token
• 拿到token后请求用户信息的地址为：http://localhost:9090/user

oauth-server

表示微信客户端

pom文件：

<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>2.4.0</version>
  <relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>oauth-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>oauth-server</name>
<description>Demo project for Spring Boot</description>

<properties>
  <java.version>1.8</java.version>
  <spring-cloud.version>2020.0.0-M5</spring-cloud.version>
</properties>

<dependencies>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-oauth2</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-security</artifactId>
  </dependency>
  
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
  </dependency>
  
</dependencies>

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-dependencies</artifactId>
      <version>${spring-cloud.version}</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

<build>
  <plugins>
    <plugin>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-maven-plugin</artifactId>
    </plugin>
  </plugins>
</build>

<repositories>
  <repository>
    <id>spring-milestones</id>
    <name>Spring Milestones</name>
    <url>https://repo.spring.io/milestone</url>
  </repository>
</repositories>

</project>

创建SpringBoot启动类：

package com.wjw.oauthserver;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;

@SpringBootApplication
@EnableResourceServer
public class OauthServerApplication {
  
  public static void main(String[] args) {
      SpringApplication.run(OauthServerApplication.class, args);
  }
  
}

创建controller：

提供一个API接口，模拟资源服务器

package com.wjw.oauthserver.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.security.Principal;

@RestController
public class UserController {
  @GetMapping("/user")
  public Principal getCurrentUser(Principal principal) {
      return principal;
  }
}

创建oauth2的关键配置类：

package com.wjw.oauthserver.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.oauth2.config.annotation.configurers.ClientDetailsServiceConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerConfigurerAdapter;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableAuthorizationServer;

@Configuration
@EnableAuthorizationServer
public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {
  @Autowired
  PasswordEncoder passwordEncoder;

  @Override
  public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
      clients.inMemory() // 在内存里
              .withClient("my_client_id")
              .secret(passwordEncoder.encode("my_client_secret")) // 加密密码
              .autoApprove(true)  // 允许所有子类用户登录
              .redirectUris("http://localhost:8080/login")    // 反跳会登录页面
              .scopes("all")
              .accessTokenValiditySeconds(3600)
              .authorizedGrantTypes("authorization_code");    // 4大模式里的授权码模式
  }
}

现在需要提供一个登录页面让用户输入用户名和密码，并设置一个管理员账户：

package com.wjw.oauthserver.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

@Configuration
@EnableWebSecurity
@Order(1)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
  @Bean
  PasswordEncoder passwordEncoder() {
      return new BCryptPasswordEncoder();
  }

  @Override
  protected void configure(HttpSecurity http) throws Exception {
      http.requestMatchers()
              .antMatchers("/login")
              .antMatchers("/oauth/authorize")
              .and()
              .authorizeRequests().anyRequest().authenticated()
              .and()
              .formLogin()
              .permitAll()
              .and()
              .csrf().disable();
  }

  @Override
  protected void configure(AuthenticationManagerBuilder auth) throws Exception {
      auth.inMemoryAuthentication()
              .withUser("wjw")
              .password(passwordEncoder().encode("123456"))
              .roles("admin");
  }
}

配置文件application.yaml：

server.port=9090

分别启动oauth-server和oauth-client进行测试：
访问localhost:8080/hello

访问hello时会重定向到login

访问登录时又会重定向到微信登录：

之后又会重定向到：

输入账户名+密码：

继续看控制台：
登录成功后还是会被重定向

此时再访问就会有授权码了（只能用一次）：

此时浏览器拿着授权码才去真正请求王者荣耀的hello接口（浏览器自动使用授权码交换token，对用户透明）：

王者荣耀使用授权码请求微信得到一个token和用户信息并返回给浏览器，浏览器再使用这个token调王者荣耀的hello接口拿用户信息：

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原文链接：https://blog.csdn.net/HNU_Csee_wjw/article/details/125016959