oauth2.0密码模式详解

oauth2.0密码模式

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如果你高度信任某个应用，RFC 6749 也允许用户把用户名和密码，直接告诉该应用。该应用就使用你的密码，申请令牌，这种方式称为"密码式"（password）。

1、密码模式流程

第一步，A 网站要求用户提供 B 网站的用户名和密码。拿到以后，A 就直接向 B 请求令牌。

https://oauth.b.com/token?  grant_type=password&  username=USERNAME&  password=PASSWORD&  client_id=CLIENT_ID

上面 URL 中，grant_type参数是授权方式，这里的password表示"密码式"，username和password是 B 的用户名和密码。

第二步，B 网站验证身份通过后，直接给出令牌。注意，这时不需要跳转，而是把令牌放在 JSON 数据里面，作为 HTTP 回应，A 因此拿到令牌。

这种方式需要用户给出自己的用户名/密码，显然风险很大，因此只适用于其他授权方式都无法采用的情况，而且必须是用户高度信任的应用。

2、密码模式实现代码

2.1 创建pom.xml

<?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>2.2.6.RELEASE</version>        <relativePath/> <!-- lookup parent from repository -->    </parent>    <groupId>com.dashi</groupId>    <artifactId>springsecurity-oauth</artifactId>    <version>0.0.1-SNAPSHOT</version>    <name>springsecurity-oauth</name>    <description>Demo project for Spring Boot</description>    <properties>        <java.version>1.8</java.version>        <spring-cloud.version>Greenwich.SR5</spring-cloud.version>    </properties>    <dependencies>        <dependency>            <groupId>org.springframework.cloud</groupId>            <artifactId>spring-cloud-starter-oauth2</artifactId>        </dependency>        <!--security依赖-->        <dependency>            <groupId>org.springframework.cloud</groupId>            <artifactId>spring-cloud-starter-security</artifactId>        </dependency>        <!--boot依赖-->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter</artifactId>        </dependency>        <!--boot依赖-->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>        </dependency>        <!--test依赖-->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-test</artifactId>            <scope>test</scope>        </dependency>    </dependencies>    <build>        <plugins>            <plugin>                <groupId>org.springframework.boot</groupId>                <artifactId>spring-boot-maven-plugin</artifactId>            </plugin>        </plugins>    </build>    <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></project>

2.2 创建springsecurity配置文件

package com.dashi.springsecurityoauth.config;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;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@EnableWebSecuritypublic class SecurityConfig extends WebSecurityConfigurerAdapter {    @Bean    public PasswordEncoder passwordEncoder(){        return new BCryptPasswordEncoder();    }    @Bean    public AuthenticationManager authenticationManager() throws Exception {        return super.authenticationManager();    }}

2.3 创建UserService实现UserDetailService接口

package com.dashi.springsecurityoauth.model;import org.springframework.security.core.GrantedAuthority;import org.springframework.security.core.userdetails.UserDetails;import java.util.Collection;import java.util.List;public class User implements UserDetails {    private String username;    private String password;    private List<GrantedAuthority> authorities;    public User(String username, String password, List<GrantedAuthority> authorities) {        this.username = username;        this.password = password;        this.authorities = authorities;    }    @Override    public Collection<? extends GrantedAuthority> getAuthorities() {        return this.authorities;    }    @Override    public String getPassword() {        return this.password;    }    @Override    public String getUsername() {        return this.username;    }    @Override    public boolean isAccountNonExpired() {        return true;    }    @Override    public boolean isAccountNonLocked() {        return true;    }    @Override    public boolean isCredentialsNonExpired() {        return true;    }    @Override    public boolean isEnabled() {        return true;    }}

2.4 创建认证服务

package com.dashi.springsecurityoauth.config;import com.dashi.springsecurityoauth.service.UserService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.context.annotation.Configuration;import org.springframework.security.authentication.AuthenticationManager;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;import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerEndpointsConfigurer;import org.springframework.security.oauth2.provider.token.TokenStore;@Configuration@EnableAuthorizationServerpublic class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {    @Autowired    private PasswordEncoder passwordEncoder;    @Autowired    private AuthenticationManager authenticationManager;    @Autowired    private UserService userService;    /**     * 密码模式采用AuthorizationServerEndpointsConfigurer配置     * @param endpoints     * @throws Exception     */    @Override    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {        endpoints.authenticationManager(authenticationManager)                .userDetailsService(userService);    }    /**     * @param clients     * @throws Exception     */    @Override    public void configure(ClientDetailsServiceConfigurer clients) throws Exception {        clients.inMemory()                .withClient("admin")                .secret(passwordEncoder.encode("112233"))                .accessTokenValiditySeconds(3600)                .redirectUris("http://www.baidu.com")                .scopes("all")                //密码模式                .authorizedGrantTypes("password");    }}

2.5 创建资源服务

package com.dashi.springsecurityoauth.config;import org.springframework.context.annotation.Configuration;import org.springframework.security.config.annotation.web.builders.HttpSecurity;import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;@Configuration@EnableResourceServerpublic class ResourceServerConfig extends ResourceServerConfigurerAdapter {    @Override    public void configure(HttpSecurity http) throws Exception {        http.authorizeRequests()                .anyRequest()                .authenticated()                .and()                .requestMatchers()          		//以/user开头的地址根据token访问资源                .antMatchers("/user/**");    }}

2.6 打开postman，填入下面内容获取token

2.7 通过token访问授保护的资源

参考文档：OAuth 2.0 的四种方式 - 阮一峰的网络日志 (ruanyifeng.com)