SpringBoot + OAuth2 获取授权码时的踩坑记录

阳光穿透心脏的1/2处 2023-06-04 08:57 12阅读 0赞

### No client with requested id: null ###

*   *  异常背景
     *  异常分析
     *   *  1. 三问度娘
         *  2. 源码断点分析
     *  写在最后

## 异常背景 ##

1 Springboot\[1.5.15.RELEASE\] + OAuth2\[2.0.15.RELEASE\]  
2 获取授权码时  
localhost:8080/oauth/authorize?clientid=clientapp&responsetype=code&scope=readuserinfo&redirecturi=https://www.baidu.com  
3 浏览器界面异常：

> error=“invalid\_client”, error\_description=“Bad client credentials”

4 后台打印异常：

> 2019-10-07 20:49:57.306 INFO 7804 — \[nio-8080-exec-3\] o.s.s.o.p.e.AuthorizationEndpoint : Handling ClientRegistrationException error: No client with requested id: null

## 异常分析 ##

### 1. 三问度娘 ###

1> No client with requested id: null  
2> error=“invalid\_client”, error\_description=“Bad client credentials”  
3> Bad client credentials

***三问无果***

### 2. 源码断点分析 ###

1.  异常所处类  
    o.s.s.o.p.e.AuthorizationEndpoint 即为抛出异常的类  
    进入该类即可发现获取授权码的接口
    
        @RequestMapping(value = "/oauth/authorize")
        	public ModelAndView authorize(Map<String, Object> model, @RequestParam Map<String, String> parameters,
        			SessionStatus sessionStatus, Principal principal) { 
        
        		// Pull out the authorization request first, using the OAuth2RequestFactory. All further logic should
        		// query off of the authorization request instead of referring back to the parameters map. The contents of the
        		// parameters map will be stored without change in the AuthorizationRequest object once it is created.
        		AuthorizationRequest authorizationRequest = getOAuth2RequestFactory().createAuthorizationRequest(parameters);
        
        		Set<String> responseTypes = authorizationRequest.getResponseTypes();
        
        		if (!responseTypes.contains("token") && !responseTypes.contains("code")) { 
        			throw new UnsupportedResponseTypeException("Unsupported response types: " + responseTypes);
        		}
        
        		if (authorizationRequest.getClientId() == null) { 
        			throw new InvalidClientException("A client id must be provided");
        		}
        		
        		···
        	}
    
    1.  断点分析  
        断点位置：
    
        Set<String> responseTypes = authorizationRequest.getResponseTypes();
    
    发现没有进入就异常了。必然是在该接口的第一行出现的异常即：
    
        AuthorizationRequest authorizationRequest = getOAuth2RequestFactory().createAuthorizationRequest(parameters);
    
    进入方法 `getOAuth2RequestFactory()`:无法分析出异常出现的地方
    
        protected OAuth2RequestFactory getOAuth2RequestFactory() { 
        	return oAuth2RequestFactory;
        }
    
    继续，进入方法 `createAuthorizationRequest(parameters)`：
    
        public AuthorizationRequest createAuthorizationRequest(Map<String, String> authorizationParameters) { 
        
        	String clientId = authorizationParameters.get(OAuth2Utils.CLIENT_ID);
        	String state = authorizationParameters.get(OAuth2Utils.STATE);
        	String redirectUri = authorizationParameters.get(OAuth2Utils.REDIRECT_URI);
        	Set<String> responseTypes = OAuth2Utils.parseParameterList(authorizationParameters
        			.get(OAuth2Utils.RESPONSE_TYPE));
        
        	Set<String> scopes = extractScopes(authorizationParameters, clientId);
        	
        	AuthorizationRequest request = new AuthorizationRequest(authorizationParameters,
        			Collections.<String, String> emptyMap(), clientId, scopes, null, null, false, state, redirectUri,
        			responseTypes);
        
        	ClientDetails clientDetails = clientDetailsService.loadClientByClientId(clientId);		
        	request.setResourceIdsAndAuthoritiesFromClientDetails(clientDetails);
        
        	return request;
        }
    
    关注第一行代码,发现所需clientId正是从我们的请求url中获取，但是获取的属性名并不是我们输入的clientid 而是 client\_id:
    
        String clientId = authorizationParameters.get(OAuth2Utils.CLIENT_ID);
    
        /** * Constant to use while parsing and formatting parameter maps for OAuth2 requests */
        public static final String CLIENT_ID = "client_id";
    
    真的是个大错误啊，由于该url是按照课程给的进行请求的，这位老师可能是粘贴的时候出了错，因为看他课程后面的贴图是请求成功的。写到这里我就要责问自己了：后面贴图的请求地址为什么没有仔细看啊，真是该！！
    
    让我羞耻的把原课程截图出来吧—\[是我为自己的笨感到羞耻\]—：![是我自己羞耻，与老师无关][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Zfc3BpdDIwMTc_size_16_color_FFFFFF_t_70]  
    除了参数client\_id，还有其他参数也要根据源码更正过来。

## 写在最后 ##

所以我们在通过网上的课程学习技术的时候一定要辩证看待，多查资料，对比学习。注意细节。

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