如何在spring boot中从客户端服务器获取资源服务器文本

Question

我有 3 台服务器正在运行，UI（或客户端）、资源服务器和身份验证服务器。除了从资源服务器向客户端获取信息外，一切都运行良好。如果我使用邮递员或任何其他休息服务程序，我会从身份验证服务器获取令牌，然后使用令牌从研究服务器获取信息。现在我去我的客户端服务器，如果我没有通过身份验证，我会被重定向到我登录的授权服务器，它会让我回到客户端服务器，它应该显示一个简单的行，如：

灯不亮

但我只收到 404 null 错误，这应该意味着它没有通过请求获得令牌。

在我的资源服务器中是一个简单的行：

{"lights":"灯不亮"}

对于如何从资源服务器获取带有令牌的信息的任何帮助表示赞赏。

我的资源服务器代码：

LightBoot.java 
@RestController public class LightsBoot {
    private static final String lights = "lights are %s";
    @RequestMapping(value = "/lights")
    public Lights greeting(@RequestParam(value = "name", defaultValue = "off") String name) {
        return new Lights(String.format(lights, name));
    } }

和我的客户代码：

  @SpringBootApplication public class ClientApplication {

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

    @Bean
    OAuth2RestTemplate oAuth2RestTemplate(OAuth2ClientContext clientContext, OAuth2ProtectedResourceDetails details) {
        return new OAuth2RestTemplate(details, clientContext);
    }

    @Bean
    public RestTemplate restTemplate() {
        return new RestTemplate();
    } } 

@RestController public class NewController {


    private RestTemplate restTemplate;

    @Value("${endpoint.lights}")
    private String lights;


    @Autowired
    public NewController(RestTemplate restTemplate) {
        this.restTemplate = restTemplate;
    }


    public GetLights newLight() {
        return restTemplate.getForObject(lights, GetLights.class);
    }

    @RequestMapping(value = "/")
    public String lights() {

        return newLight() + "     <--- here should be value of lights";
    }

}

客户端属性如下：

auth-server: http://localhost:8081/authserver
resource-server: http://localhost:8082/resource
endpoint:
  lights: http://localhost:8082/resource/lights
server:
  port: 8080
security:
  basic:
    enabled: false
  oauth2:
    client:
      client-id: user
      client-secret: user-secret
      access-token-uri: ${auth-server}/oauth/token
      user-authorization-uri: ${auth-server}/oauth/authorize
      scope: USER
      authorized-grant-types: authorization_code
    resource:
      token-info-uri: ${auth-server}/oauth/check_token
logging:
  level:
    org.springframework.security: DEBUG

EDIT1 我的客户端应用程序的控制台输出

Redirecting to 'http://localhost:8081/authserver/oauth/authorize?client_id=jan&redirect_uri=http://localhost:8080/login&response_type=code&scope=USER&state=qJE3Rp'
Retrieving token from http://localhost:8081/authserver/oauth/token
2017-08-10 14:47:48.898 DEBUG 17560 --- [nio-8080-exec-2] g.c.AuthorizationCodeAccessTokenProvider : Encoding and sending form: {grant_type=[authorization_code], code=[0zeUdq], redirect_uri=[http://localhost:8080/login]}
2017-08-10 14:47:48.928 DEBUG 17560 --- [nio-8080-exec-2] s.CompositeSessionAuthenticationStrategy : Delegating to org.springframework.security.web.authentication.session.ChangeSessionIdAuthenticationStrategy@327cec
2017-08-10 14:47:48.929 DEBUG 17560 --- [nio-8080-exec-2] s.CompositeSessionAuthenticationStrategy : Delegating to org.springframework.security.web.csrf.CsrfAuthenticationStrategy@1dd8d6
2017-08-10 14:47:48.929 DEBUG 17560 --- [nio-8080-exec-2] uth2ClientAuthenticationProcessingFilter : Authentication success. Updating SecurityContextHolder to contain: org.springframework.security.oauth2.provider.OAuth2Authentication@e5d78cca: Principal: user; Credentials: [PROTECTED]; Authenticated: true; Details: remoteAddress=0:0:0:0:0:0:0:1, sessionId=<SESSION>, tokenType=bearertokenValue=<TOKEN>; Granted Authorities: ROLE_USER
2017-08-10 14:47:48.929 DEBUG 17560 --- [nio-8080-exec-2] RequestAwareAuthenticationSuccessHandler : Redirecting to DefaultSavedRequest Url: http://localhost:8080/
2017-08-10 14:47:48.929 DEBUG 17560 --- [nio-8080-exec-2] o.s.s.web.DefaultRedirectStrategy        : Redirecting to 'http://localhost:8080/'

Answer 1

尝试在NewController 中的lights() 方法中添加@ResponseBody 注释，这样它看起来像：

@RequestMapping(value = "/")
@ResponseBody
public String lights() {
    return newLight() + "     <--- here should be value of lights";
}

我怀疑正在发生的事情（尽管这主要是猜测，并且非常依赖于您的配置）是 lights() 方法返回的值，我认为是字符串 lights are off <--- here should be value of lights，正在被解释以 Spring 作为视图名称，因此它正在寻找一个名为 lights are off <--- here should be value of lights.html 之类的文件，例如 src/main/resources/templates，当然它没有找到。

@ResponseBody 注释告诉 Spring 只返回值作为响应的内容。