Oauth2.0客户端服务端示例

时间:2020-11-26 04:29:11

https://blog.csdn.net/qq_28165595/article/details/80459185

前言
前面的理解OAuth2.0认证与客户端授权码模式详解,我们大致了解了Oauth2.0授权模式四种的授权码模式,清楚了授权码模式的大致流程。这里简单的模拟一下基于授权码模式的客户端和服务端代码实现(这里服务端包含的验证服务端和资源服务端,都是在同一个应用中)。

回顾大致授权流程

图中步骤1,请求授权,例如我们要登录csdn,这里我们想用qq账号登录,这时候就需要腾讯开放平台进行授权,具体操作如下图

这里简单模拟,在客户端web项目中构造一个oauth的客户端请求对象(OAuthClientRequest),在此对象中携带客户端信息(clientId、accessTokenUrl、response_type、redirectUrl),将此信息放入http请求中,重定向到服务端。
上图步骤2,在服务端web项目中接受第一步传过来的request,从中获取客户端信息,可以自行验证信息的可靠性。同时构造一个oauth的code授权许可对象(OAuthAuthorizationResponseBuilder),并在其中设置授权码code,将此对象传回客户端。
上图步骤3,在在客户端web项目中接受第二步的请求request,从中获得code。同时构造一个oauth的客户端请求对象(OAuthClientRequest),此次在此对象中不仅要携带客户端信息(clientId、accessTokenUrl、clientSecret、GrantType、redirectUrl),还要携带接受到的code。再构造一个客户端请求工具对象(oAuthClient),这个工具封装了httpclient,用此对象将这些信息以post的方式请求到服务端,目的是为了让服务端返回资源访问令牌。
上图步骤4,在服务端web项目中接受第三步传过来的request,从中获取客户端信息和code,并自行验证。再按照自己项目的要求生成访问令牌(accesstoken),同时构造一个oauth响应对象(OAuthASResponse),携带生成的访问指令(accesstoken),返回给第三步中客户端的oAuthClient。oAuthClient接受响应之后获取accesstoken。
上图步骤5,此时客户端web项目中已经有了从服务端返回过来的accesstoken,那么在客户端构造一个服务端资源请求对象(OAuthBearerClientRequest),在此对象中设置服务端资源请求URI,并携带上accesstoken。再构造一个客户端请求工具对象(oAuthClient),用此对象去服务端靠accesstoken换取资源。
上图步骤6,在服务端web项目中接受第五步传过来的request,从中获取accesstoken并自行验证。之后就可以将客户端请求的资源返回给客户端了。
客户端代码
/**
* @ClassName: ClientController
* @Description: Oauth客户端
* @author qinhaihai
* @date 2018年5月24日
*
*/
@Controller
@RequestMapping("/clientController")
public class ClientController{
String clientId = null;
String clientSecret = null;
String accessTokenUrl = null;
String userInfoUrl = null;
String redirectUrl = null;
String response_type = null;
String code= null;

//提交申请code的请求,对应上图中的步骤一
@RequestMapping("/requestServerCode")
public String requestServerCode(HttpServletRequest request, HttpServletResponse response)
throws OAuthProblemException{
clientId = "clientId";
accessTokenUrl = "responseCode";
redirectUrl = "http://localhost:8081/oauthclient01/clientController/callbackCode";
response_type = "code";
String requestUrl = null;
try {
//构建oauth的请求。设置授权服务地址(accessTokenUrl)、clientId、response_type、redirectUrl
OAuthClientRequest accessTokenRequest = OAuthClientRequest
.authorizationLocation(accessTokenUrl)
.setResponseType(response_type)
.setClientId(clientId)
.setRedirectURI(redirectUrl)
.buildQueryMessage();
requestUrl = accessTokenRequest.getLocationUri();
System.out.println("获取授权码方法中的requestUrl的值----"+requestUrl);
} catch (OAuthSystemException e) {
e.printStackTrace();
}
return "redirect:http://localhost:8082/oauthserver/"+requestUrl ;
}

//接受客户端返回的code,提交申请access token的请求,对应上图中的步骤三
@RequestMapping("/callbackCode")
public Object toLogin(HttpServletRequest request) throws OAuthProblemException{
clientId = "clientId";
clientSecret = "clientSecret";
accessTokenUrl="http://localhost:8082/oauthserver/responseAccessToken";
userInfoUrl = "userInfoUrl";
redirectUrl = "http://localhost:8081/oauthclient01/clientController/accessToken";
HttpServletRequest httpRequest = (HttpServletRequest) request;
OAuthClient oAuthClient = new OAuthClient(new URLConnectionClient());
try {
OAuthClientRequest accessTokenRequest = OAuthClientRequest
.tokenLocation(accessTokenUrl)
.setGrantType(GrantType.AUTHORIZATION_CODE)
.setClientId(clientId)
.setClientSecret(clientSecret)
.setCode(httpRequest.getParameter("code"))
.setRedirectURI(redirectUrl)
.buildQueryMessage();
//去服务端请求access token,并返回响应
OAuthAccessTokenResponse oAuthResponse = oAuthClient.accessToken(accessTokenRequest, OAuth.HttpMethod.POST);
//获取服务端返回过来的access token
String accessToken = oAuthResponse.getAccessToken();
//查看access token是否过期
//Long expiresIn = oAuthResponse.getExpiresIn();
return "redirect:http://localhost:8081/oauthclient01/clientController/accessToken?accessToken="+accessToken;
} catch (OAuthSystemException e) {
e.printStackTrace();
}
return null;
}

//接受服务端传回来的access token,由此token去请求服务端的资源(用户信息等),对应上图中的步骤五
@RequestMapping("/accessToken")
public ModelAndView accessToken(String accessToken) {
userInfoUrl = "http://localhost:8082/oauthserver/userInfo";
OAuthClient oAuthClient = new OAuthClient(new URLConnectionClient());
try {
OAuthClientRequest userInfoRequest = new OAuthBearerClientRequest(userInfoUrl)
.setAccessToken(accessToken).buildQueryMessage();
OAuthResourceResponse resourceResponse = oAuthClient.resource(userInfoRequest, OAuth.HttpMethod.GET, OAuthResourceResponse.class);
String username = resourceResponse.getBody();
ModelAndView modelAndView = new ModelAndView("usernamePage");
modelAndView.addObject("username", username);
return modelAndView;
} catch (OAuthSystemException e) {
e.printStackTrace();
} catch (OAuthProblemException e) {
e.printStackTrace();
}
return null;
}
}
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服务端代码
/**
* @ClassName: AuthorizeController
* @Description: 服务端授权Controller
* @author aiqinhai
* @date 2018年5月24日 下午10:00:01
*/
@Controller
public class AuthorizeController{
//向客户端返回授权许可码 code,对应上图中的步骤二
@RequestMapping("/responseCode")
public Object responseCode(Model model,HttpServletRequest request){
try {
//构建OAuth 授权请求
OAuthAuthzRequest oauthRequest = new OAuthAuthzRequest(request);
System.out.println("授权服务器获取的clientID----"+oauthRequest.getClientId());
System.out.println("返回类型----"+oauthRequest.getResponseType());
System.out.println("重定向地址---"+oauthRequest.getRedirectURI());
if(oauthRequest.getClientId()!=null&&oauthRequest.getClientId()!=""){
//设置授权码
String authorizationCode = "authorizationCode";
//进行OAuth响应构建
OAuthASResponse.OAuthAuthorizationResponseBuilder builder =
OAuthASResponse.authorizationResponse(request, HttpServletResponse.SC_FOUND);
//设置授权码
builder.setCode(authorizationCode);
//得到到客户端重定向地址
String redirectURI = oauthRequest.getParam(OAuth.OAUTH_REDIRECT_URI);
//构建响应
final OAuthResponse response = builder.location(redirectURI).
buildQueryMessage();
String responceUri =response.getLocationUri();
System.out.println("redirectURI是----"+redirectURI);
System.out.println("responceUri是----"+responceUri);
//根据OAuthResponse返回ResponseEntity响应
HttpHeaders headers = new HttpHeaders();
try {
headers.setLocation(new URI(responceUri));
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return "redirect:"+responceUri;
}
} catch (OAuthSystemException e) {
e.printStackTrace();
} catch (OAuthProblemException e) {
e.printStackTrace();
}
return null;
}
}
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上面的responseCode,对应了上图的步骤二,返回authorizationCode授权码到客户端。

/**
*
* @ClassName: AccessTokenController
* @Description: 根据授权码生成accessToken
* @author aiqinlhai
* @date 2018年5月24日
*/
@Controller
public class AccessTokenController {

//获取客户端的code码,向客户端返回access token
@RequestMapping(value="/responseAccessToken",method = RequestMethod.POST)
public HttpEntity token(HttpServletRequest request){
OAuthIssuer oauthIssuerImpl=null;
OAuthResponse response=null;
//构建OAuth请求
try {
OAuthTokenRequest oauthRequest = new OAuthTokenRequest(request);
String authCode = oauthRequest.getParam(OAuth.OAUTH_CODE);
System.out.println("客户端传过来的授权码是----"+authCode);
String clientSecret = oauthRequest.getClientSecret();
if(clientSecret!=null||clientSecret!=""){
//生成Access Token
oauthIssuerImpl = new OAuthIssuerImpl(new MD5Generator());
final String accessToken = oauthIssuerImpl.accessToken();
System.out.println(accessToken);
//生成OAuth响应
response = OAuthASResponse
.tokenResponse(HttpServletResponse.SC_OK)
.setAccessToken(accessToken)
.buildJSONMessage();
}
//根据OAuthResponse生成ResponseEntity
return new ResponseEntity<String>(response.getBody(),
HttpStatus.valueOf(response.getResponseStatus()));
} catch (OAuthSystemException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (OAuthProblemException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
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上面的代码对应上图的步骤4,验证客户端的授权码,并返回accessToken。

/**
*
* @ClassName: UserInfoController
* @Description: 根据客户端的accessToken来返回用户信息到客户端
* @author aiqinhai
* @date 2018年5月24
*/
@Controller
public class UserInfoController {
@RequestMapping("/userInfo")
public HttpEntity<String> userInfo(HttpServletRequest request)
throws OAuthSystemException{
try {
//获取客户端传来的OAuth资源请求
OAuthAccessResourceRequest oauthRequest = new
OAuthAccessResourceRequest(request, ParameterStyle.QUERY);
//获取Access Token
String accessToken = oauthRequest.getAccessToken();
System.out.println("从客户端获取的accessToken----"+accessToken);
//验证Access Token
if (accessToken==null||accessToken=="") {
// 如果不存在/过期了,返回未验证错误,需重新验证
OAuthResponse oauthResponse = OAuthRSResponse
.errorResponse(HttpServletResponse.SC_UNAUTHORIZED)
.setError(OAuthError.ResourceResponse.INVALID_TOKEN)
.buildHeaderMessage();
HttpHeaders headers = new HttpHeaders();
headers.add(OAuth.HeaderType.WWW_AUTHENTICATE,
oauthResponse.getHeader(OAuth.HeaderType.WWW_AUTHENTICATE));
return new ResponseEntity<String>(headers, HttpStatus.UNAUTHORIZED);
}
//这里没有从数据库查询了,简单指定为"aiqinhai"
String username="aiqinhai";
return new ResponseEntity<String>(username, HttpStatus.OK);
} catch (OAuthProblemException e) {
// TODO Auto-generated catch block
e.printStackTrace();
//检查是否设置了错误码
String errorCode = e.getError();
if (OAuthUtils.isEmpty(errorCode)) {
OAuthResponse oauthResponse = OAuthRSResponse
.errorResponse(HttpServletResponse.SC_UNAUTHORIZED)
.buildHeaderMessage();
HttpHeaders headers = new HttpHeaders();
headers.add(OAuth.HeaderType.WWW_AUTHENTICATE,
oauthResponse.getHeader(OAuth.HeaderType.WWW_AUTHENTICATE));
return new ResponseEntity<String>(headers, HttpStatus.UNAUTHORIZED);
}
OAuthResponse oauthResponse = OAuthRSResponse
.errorResponse(HttpServletResponse.SC_UNAUTHORIZED)
.setError(e.getError())
.setErrorDescription(e.getDescription())
.setErrorUri(e.getUri())
.buildHeaderMessage();
HttpHeaders headers = new HttpHeaders();
headers.add(OAuth.HeaderType.WWW_AUTHENTICATE,
oauthResponse.getHeader(OAuth.HeaderType.WWW_AUTHENTICATE));
return new ResponseEntity<String>(HttpStatus.BAD_REQUEST);
}
}
}
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上段代码对应上图中的步骤6,验证accessToken,返回用户请求资源,这里简单用username来模拟用户请求的资源。
服务端控制台输出如下

相关依赖jar包
客户端依赖jar包

<dependency>
<groupId>org.apache.oltu.oauth2</groupId>
<artifactId>org.apache.oltu.oauth2.client</artifactId>
<version>0.31</version>
</dependency>
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服务端依赖jar包

<dependency>
<groupId>org.apache.oltu.oauth2</groupId>
<artifactId>org.apache.oltu.oauth2.authzserver</artifactId>
<version>0.31</version>
</dependency>
<dependency>
<groupId>org.apache.oltu.oauth2</groupId>
<artifactId>org.apache.oltu.oauth2.resourceserver</artifactId>
<version>0.31</version>
</dependency>
---------------------
作者:爱琴孩
来源:CSDN
原文:https://blog.csdn.net/qq_28165595/article/details/80459185
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