jwt实现sso

sso（单点登录）：多个系统，在一个系统登录后，其他系统也登录了。比如：在淘宝登录后，天猫也登录了。

image.png

创建4个项目sso-demo,sso-server,sso-client1,sso-client2

sso-demo的pom文件

<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>
  <groupId>com.fuiou.sso</groupId>
  <artifactId>sso-demo</artifactId>
  <version>1.0.0-SNAPSHOT</version>
  <packaging>pom</packaging>
  
   <!-- 管理版本，防止冲突 -->
  <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>io.spring.platform</groupId>
                <artifactId>platform-bom</artifactId>
                <version>Brussels-SR4</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <modules>
        <module>../sso-client1</module>
        <module>../sso-client2</module>
        <module>../sso-server</module>
    </modules>
</project>

sso-server

<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>com.fuiou.sso</groupId>
    <artifactId>sso-demo</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <relativePath>../sso-demo</relativePath>
  </parent>
  <artifactId>sso-server</artifactId>
  <dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.security.oauth</groupId>
        <artifactId>spring-security-oauth2</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-jwt</artifactId>
    </dependency>
  </dependencies>
</project>

@Configuration
@EnableAuthorizationServer
public class SsoAuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {
    
    @Override
    public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
        clients.inMemory()
                .withClient("fuiou1")
                .secret("fuiousecret1")
                .authorizedGrantTypes("authorization_code","refresh_token")
                .scopes("all")
                .and()
                .withClient("fuiou2")
                .secret("fuiousecret2")
                .authorizedGrantTypes("authorization_code","refresh_token")
                .scopes("all");
    }
    
    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        endpoints.tokenStore(jwtTokenStore()).accessTokenConverter(jwtAccessTokenConverter());
    }
    
    @Override
    public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
        security.tokenKeyAccess("isAuthenticated()");
    }
    
    @Bean
    public TokenStore jwtTokenStore() {
        return new JwtTokenStore(jwtAccessTokenConverter());
    }
    
    /**
     * 配置jwt签名
     * @return
     */
    @Bean
    public JwtAccessTokenConverter jwtAccessTokenConverter() {
        JwtAccessTokenConverter accessTokenConverter=new JwtAccessTokenConverter();
        accessTokenConverter.setSigningKey("fuiou");
        return accessTokenConverter;
    }
    
}

sso-client1
pom和server一致

@SpringBootApplication
@RestController
@EnableOAuth2Sso
public class SsoClient1Application {

    public static void main(String[] args) {
        SpringApplication.run(SsoClient1Application.class, args);
    }
    @GetMapping("/user")
    public Authentication user(Authentication user) {
        return user;
    }
    
}

security.oauth2.client.client-id=fuiou1
security.oauth2.client.client-secret=fuiousecret1
security.oauth2.client.user-authorization-uri=http://127.0.0.1:9999/server/oauth/authorize
security.oauth2.client.access-token-uri=http://127.0.0.1:9999/server/oauth/token
security.oauth2.resource.jwt.key-uri=http://127.0.0.1:9999/server/oauth/token_key

server.port=8080
server.context-path=/client1

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
    <h3>sso demo client1</h3>
    <a href="http://127.0.0.1:8060/client2/index.html">访问client2</a>
</body>
</html>

sso-client2
pom与server一致

@SpringBootApplication
@RestController
@EnableOAuth2Sso
public class SsoClient2Application {
    public static void main(String[] args) {
        SpringApplication.run(SsoClient2Application.class, args);
    }
    @GetMapping("/user")
    public Authentication user(Authentication user) {
        return user;
    }
}

security.oauth2.client.client-id=fuiou2
security.oauth2.client.client-secret=fuiousecret2
security.oauth2.client.user-authorization-uri=http://127.0.0.1:9999/server/oauth/authorize
security.oauth2.client.access-token-uri=http://127.0.0.1:9999/server/oauth/token
security.oauth2.resource.jwt.key-uri=http://127.0.0.1:9999/server/oauth/token_key

server.port=8060
server.context-path=/client2

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
    <h3>sso demo client2</h3>
    <a href="http://127.0.0.1:8080/client1/index.html">访问client1</a>
</body>
</html>

1、访问http://127.0.0.1:8080/client1/index.html

image.png

发现跳转到了http://127.0.0.1:9999/server/oauth/authorize
认证服务器的接口，因为什么配置也没写，所以弹出的一个弹窗做校验。

2、输入user,123456

image.png

需要点击一下授权。
3、访问到了client1的index页面

image.png

4、点击跳转到client2的index页面

image.png

这里已经不用登录了，只需要点击授权

5、访问http://127.0.0.1:8060/client2/user
http://127.0.0.1:8080/client1/user
访问client1和client2的user接口，都能得到用户信息，证明其实在client2中也登录了。

2个问题

1、默认的弹窗登录太简陋了，需要表单登录页面

@Component
public class SsoUserDeatilsService implements UserDetailsService {
    
    @Autowired
    private PasswordEncoder passwordEncoder;
    
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        return new User(username, passwordEncoder.encode("123456"), AuthorityUtils.commaSeparatedStringToAuthorityList("ROLE_USER"));
    }
}

@Configuration
public class SsoSecutityConfig extends WebSecurityConfigurerAdapter {
    
    @Autowired
    private UserDetailsService userDetailsService;
    
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.formLogin().and().authorizeRequests().anyRequest().authenticated();
    }
    
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
    }
    
}

2、由于是自己的系统进行跳转，授权的步骤可以省略

package com.fuiou.sso.server;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.SessionAttributes;
import org.springframework.web.servlet.ModelAndView;
@RestController
@SessionAttributes("authorizationRequest")
public class SsoApprovalEndpoint {
    @RequestMapping("/oauth/confirm_access")
    public ModelAndView getAccessConfirmation(Map<String, Object> model, HttpServletRequest request) throws Exception {
        String template = createTemplate(model, request);
        if (request.getAttribute("_csrf") != null) {
            model.put("_csrf", request.getAttribute("_csrf"));
        }
        return new ModelAndView(new SsoSpelView(template), model);
    }

    protected String createTemplate(Map<String, Object> model, HttpServletRequest request) {
        String template = TEMPLATE;
        if (model.containsKey("scopes") || request.getAttribute("scopes") != null) {
            template = template.replace("%scopes%", createScopes(model, request)).replace("%denial%", "");
        }
        else {
            template = template.replace("%scopes%", "").replace("%denial%", DENIAL);
        }
        if (model.containsKey("_csrf") || request.getAttribute("_csrf") != null) {
            template = template.replace("%csrf%", CSRF);
        }
        else {
            template = template.replace("%csrf%", "");
        }
        return template;
    }

    private CharSequence createScopes(Map<String, Object> model, HttpServletRequest request) {
        StringBuilder builder = new StringBuilder("<ul>");
        @SuppressWarnings("unchecked")
        Map<String, String> scopes = (Map<String, String>) (model.containsKey("scopes") ? model.get("scopes") : request
                .getAttribute("scopes"));
        for (String scope : scopes.keySet()) {
            String approved = "true".equals(scopes.get(scope)) ? " checked" : "";
            String denied = !"true".equals(scopes.get(scope)) ? " checked" : "";
            String value = SCOPE.replace("%scope%", scope).replace("%key%", scope).replace("%approved%", approved)
                    .replace("%denied%", denied);
            builder.append(value);
        }
        builder.append("</ul>");
        return builder.toString();
    }

    private static String CSRF = "<input type='hidden' name='${_csrf.parameterName}' value='${_csrf.token}' />";

    private static String DENIAL = "<form id='denialForm' name='denialForm' action='${path}/oauth/authorize' method='post'><input name='user_oauth_approval' value='false' type='hidden'/>%csrf%<label><input name='deny' value='Deny' type='submit'/></label></form>";

    private static String TEMPLATE = "<html><body><div style='display:none;'><h1>OAuth Approval</h1>"
            + "<p>Do you authorize '${authorizationRequest.clientId}' to access your protected resources?</p>"
            + "<form id='confirmationForm' name='confirmationForm' action='${path}/oauth/authorize' method='post'><input name='user_oauth_approval' value='true' type='hidden'/>%csrf%%scopes%<label><input name='authorize' value='Authorize' type='submit'/></label></form>"
            + "%denial%</div><script>document.getElementById('confirmationForm').submit()</script></body></html>";
    private static String SCOPE = "<li><div class='form-group'>%scope%: <input type='radio' name='%key%'"
            + " value='true'%approved%>Approve</input> <input type='radio' name='%key%' value='false'%denied%>Deny</input></div></li>";
}

package com.fuiou.sso.server;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.context.expression.MapAccessor;
import org.springframework.expression.Expression;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import org.springframework.security.oauth2.common.util.RandomValueStringGenerator;
import org.springframework.util.PropertyPlaceholderHelper;
import org.springframework.util.PropertyPlaceholderHelper.PlaceholderResolver;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.support.ServletUriComponentsBuilder;

public class SsoSpelView implements View{
    private final String template;
    
    private final String prefix;

    private final SpelExpressionParser parser = new SpelExpressionParser();

    private final StandardEvaluationContext context = new StandardEvaluationContext();

    private PlaceholderResolver resolver;

    public SsoSpelView(String template) {
        this.template = template;
        this.prefix = new RandomValueStringGenerator().generate() + "{";
        this.context.addPropertyAccessor(new MapAccessor());
        this.resolver = new PlaceholderResolver() {
            public String resolvePlaceholder(String name) {
                Expression expression = parser.parseExpression(name);
                Object value = expression.getValue(context);
                return value == null ? null : value.toString();
            }
        };
    }

    public String getContentType() {
        return "text/html";
    }

    public void render(Map<String, ?> model, HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        Map<String, Object> map = new HashMap<String, Object>(model);
        String path = ServletUriComponentsBuilder.fromContextPath(request).build()
                .getPath();
        map.put("path", (Object) path==null ? "" : path);
        context.setRootObject(map);
        String maskedTemplate = template.replace("${", prefix);
        PropertyPlaceholderHelper helper = new PropertyPlaceholderHelper(prefix, "}");
        String result = helper.replacePlaceholders(maskedTemplate, resolver);
        result = result.replace(prefix, "${");
        response.setContentType(getContentType());
        response.getWriter().append(result);
    }

}