Spring-Security-OAuth2调用微信API

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Scope;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.oauth2.client.DefaultOAuth2ClientContext;
import org.springframework.security.oauth2.client.OAuth2ClientContext;
import org.springframework.security.oauth2.client.OAuth2RestTemplate;
import org.springframework.security.oauth2.client.resource.OAuth2AccessDeniedException;
import org.springframework.security.oauth2.client.resource.OAuth2ProtectedResourceDetails;
import org.springframework.security.oauth2.client.resource.UserApprovalRequiredException;
import org.springframework.security.oauth2.client.resource.UserRedirectRequiredException;
import org.springframework.security.oauth2.client.token.AccessTokenRequest;
import org.springframework.security.oauth2.client.token.RequestEnhancer;
import org.springframework.security.oauth2.client.token.grant.code.AuthorizationCodeAccessTokenProvider;
import org.springframework.security.oauth2.client.token.grant.code.AuthorizationCodeResourceDetails;
import org.springframework.security.oauth2.common.AuthenticationScheme;
import org.springframework.security.oauth2.common.OAuth2AccessToken;
import org.springframework.stereotype.Controller;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;import javax.servlet.http.HttpServletRequest;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;@Controller
public class LoginController {    @Autowired
    private OAuth2ClientContext context;    @Bean
    @Scope("session")
    public OAuth2ClientContext createContext() {
        return new DefaultOAuth2ClientContext();
    }    @ResponseBody
    @RequestMapping("/weixin/authorize")
    public Object getUserInfo(HttpServletRequest request) {
        class WeixinAuthorizationCodeAccessTokenProvider extends AuthorizationCodeAccessTokenProvider {
            public WeixinAuthorizationCodeAccessTokenProvider(List<HttpMessageConverter<?>> messageConverters) {
                this.setMessageConverters(messageConverters);
                this.setTokenRequestEnhancer(new RequestEnhancer() {
                    @Override
                    public void enhance(AccessTokenRequest request, OAuth2ProtectedResourceDetails resource,
                                        MultiValueMap<String, String> form, HttpHeaders headers) {
                        String clientId = form.getFirst("client_id");
                        String clientSecret = form.getFirst("client_secret");
                        form.set("appid", clientId);
                        form.set("secret", clientSecret);
                        form.remove("client_id");
                        form.remove("client_secret");
                    }
                });
            }            @Override
            public OAuth2AccessToken obtainAccessToken(OAuth2ProtectedResourceDetails details, AccessTokenRequest request)
                    throws UserRedirectRequiredException, UserApprovalRequiredException,
                    AccessDeniedException, OAuth2AccessDeniedException {
                try {
                    return super.obtainAccessToken(details, request);
                } catch (UserRedirectRequiredException e) {
                    Map<String, String> params = e.getRequestParams();
                    String clientId = params.get("client_id");
                    params.put("appid", clientId);
                    params.remove("client_id");
                    throw e;
                }
            }
        }        class WeixinOAuth2RestTemplate extends OAuth2RestTemplate {            public WeixinOAuth2RestTemplate(AuthorizationCodeResourceDetails resource, OAuth2ClientContext context) {
                super(resource, context);
                List<HttpMessageConverter<?>> messageConverters = new ArrayList<HttpMessageConverter<?>>();
                messageConverters.add(new MappingJackson2HttpMessageConverter() {
                    @Override
                    protected boolean canRead(MediaType mediaType) {
                        return true;
                    }
                });
                this.setMessageConverters(messageConverters);
                this.setAccessTokenProvider(new WeixinAuthorizationCodeAccessTokenProvider(messageConverters));
            }            @Override
            protected URI appendQueryParameter(URI uri, OAuth2AccessToken accessToken) {
                uri = super.appendQueryParameter(uri, accessToken);
                String url = uri.toString();
                if (url.contains("$openid$")) {
                    String openid = (String) accessToken.getAdditionalInformation().get("openid");
                    try {
                        uri = new URI(url.replace("$openid$", openid));
                    } catch (URISyntaxException e) {
                        e.printStackTrace();
                    }
                }
                return uri;
            }        }        AuthorizationCodeResourceDetails resource = new AuthorizationCodeResourceDetails();
        resource.setAuthenticationScheme(AuthenticationScheme.form);
        resource.setClientAuthenticationScheme(AuthenticationScheme.form);
        resource.setClientId("xxxxxxxxxxx");
        resource.setClientSecret("xxxxxxxxxxx");
        resource.setUserAuthorizationUri("https://open.weixin.qq.com/connect/oauth2/authorize");
        resource.setAccessTokenUri("https://api.weixin.qq.com/sns/oauth2/access_token");
        resource.setScope(Arrays.asList("snsapi_userinfo"));
        context.getAccessTokenRequest().setCurrentUri(request.getRequestURL().toString());// resource.setPreEstablishedRedirectUri("http://www.baidu.com");// resource.setUseCurrentUri(false);        OAuth2RestTemplate template = new WeixinOAuth2RestTemplate(resource, context);
        String url = "https://api.weixin.qq.com/sns/userinfo?lang=zh_CN&openid=$openid$";
        ResponseEntity<Object> result = template.getForEntity(url, Object.class);
        return result.getBody();
    }}

https://www.cnblogs.com/kingsy/p/6375881.html

class WeixinClientCredentialsAccessTokenProvider extends ClientCredentialsAccessTokenProvider {
    public WeixinClientCredentialsAccessTokenProvider() {
        List<HttpMessageConverter<?>> converters = new ArrayList<HttpMessageConverter<?>>();
        converters.add(new MappingJackson2HttpMessageConverter());
        this.setMessageConverters(converters);
        this.setTokenRequestEnhancer(new RequestEnhancer() {            @Override
            public void enhance(AccessTokenRequest request, OAuth2ProtectedResourceDetails resource,
                                MultiValueMap<String, String> form, HttpHeaders headers) {
                form.set("appid", resource.getClientId());
                form.set("secret", resource.getClientSecret());
                form.set("grant_type", "client_credential");
            }
        });    }

        OAuth2ClientContext context = new DefaultOAuth2ClientContext();
        ClientCredentialsResourceDetails resource = new ClientCredentialsResourceDetails();
        resource.setClientId("xxxxxxxxx");
        resource.setClientSecret("xxxxxxxxxxxxxxx");
        resource.setAccessTokenUri("https://api.weixin.qq.com/cgi-bin/token");
        resource.setAuthenticationScheme(AuthenticationScheme.form);
        OAuth2RestTemplate restTemplate = new OAuth2RestTemplate(resource, context);
        restTemplate.setAccessTokenProvider(new WeixinClientCredentialsAccessTokenProvider());
        restTemplate.setRetryBadAccessTokens(true);
        ResponseEntity<Object> response = restTemplate.getForEntity("https://api.weixin.qq.com/cgi-bin/user/get", Object.class);
        if (response.getStatusCode() == HttpStatus.OK) {
            System.out.println(response.getBody());
        }

http://www.cnblogs.com/kingsy/p/6375880.html

使用背景 ：公司有个开放平台，若要访问开放平台，必须先要获取授权访问令牌（也就是下面说的：access_token）。公司的授权系统是用spring oauth2.0实现的，今天就不讲这个项目，网上比较多。今天主要是讲下如何用spring OAuth2.0 Client 组件会去实现高效获取access_token。
以下是实现代码：

1.项目启动后，从oauth.properties获取相关的信息(如公钥、私钥等信息)，然后实例化OAuth2RestTemplate，主要是通过OAuth2RestTemplate这个类去获取access_token

@EnableOAuth2Client
@Configuration
@Component
public class Oauth2Config{    private final static Logger logger = Logger.getLogger(Oauth2Config.class);    private static String location = "classpath:config/*/oauth.properties";    private static Map<String,String> oauthInfo = new HashMap<String,String>();    @Autowired
    private OAuth2ClientContext oauth2Context;    /**
     * 获取配置文件信息
     */
    static{
        ResourcePatternResolver patternResolver = new PathMatchingResourcePatternResolver();
        Resource[] resources;
        try {
            resources = patternResolver.getResources(location);
            location = resources[0].getFile().getAbsolutePath();
            logger.info("location" + location);
            Properties props = new Properties();
            try {
                if(location.contains("dev")){
                    props = PropertiesLoaderUtils.loadAllProperties("config/dev/oauth.properties");
                }else if(location.contains("test")){
                    props = PropertiesLoaderUtils.loadAllProperties("config/test/oauth.properties");
                }else if(location.contains("production")){
                    props = PropertiesLoaderUtils.loadAllProperties("config/production/oauth.properties");
                }
                for(Object key:props.keySet()){
                    logger.warn(key + " : " +  (String)props.get(key));
                    oauthInfo.put((String) key, (String)props.get(key));
                }
            } catch (IOException e) {
                System.out.println(e.getMessage());
            }
        } catch (IOException e) {
            e.printStackTrace();
        }    }     @Bean
    public AccessTokenRequest accessTokenRequest(){
        AccessTokenRequest defaultAccessTokenRequest = new DefaultAccessTokenRequest();
        Map<String, List<String>> headers = new HashMap<String, List<String>>();
        List<String> headerList=new ArrayList<String>();
        headerList.add("Basic " + oauthInfo.get("public_key"));
        headers.put("Authorization", headerList);
        defaultAccessTokenRequest.setHeaders(headers);
        defaultAccessTokenRequest.setCurrentUri(oauthInfo.get("redirect_uri"));
        return defaultAccessTokenRequest;
    }    @Bean
    public AuthorizationCodeResourceDetails resourceDetails(){
        AuthorizationCodeResourceDetails resource = new AuthorizationCodeResourceDetails();
        resource.setAccessTokenUri(oauthInfo.get("oauth_url") + oauthInfo.get("request_and_refresh_token"));
        resource.setClientId(oauthInfo.get("client_id"));
        resource.setGrantType("authorization_code");
        resource.setUserAuthorizationUri(oauthInfo.get("oauth_url") + oauthInfo.get("request_code_url"));
        resource.setScope(Arrays.asList("app"));
        resource.setPreEstablishedRedirectUri(oauthInfo.get("redirect_uri"));
        return resource;
    }    @Bean
    public OAuth2RestTemplate oAuth2RestTemplate(){
        accessTokenRequest().setPreservedState(oauthInfo.get("redirect_uri"));
        accessTokenRequest().setStateKey(new DefaultStateKeyGenerator().generateKey(resourceDetails()));        AuthorizationCodeAccessTokenProvider provider = new AuthorizationCodeAccessTokenProvider();
        provider.setAuthenticationHandler(new ClientAuthenticationHandler() {
            @Override
            public void authenticateTokenRequest(
                    OAuth2ProtectedResourceDetails resource,
                    MultiValueMap<String, String> form, HttpHeaders headers) {
                headers.set("Authorization", "Basic " + oauthInfo.get("private_key") );
            }
        });
        AccessTokenProviderChain providerChain = new AccessTokenProviderChain(Arrays.asList(provider));
        //oauth2Context.setPreservedState(accessTokenRequest().getStateKey(),accessTokenRequest().getPreservedState());
        OAuth2RestTemplate template=new OAuth2RestTemplate(resourceDetails(),oauth2Context);
        template.setAccessTokenProvider(providerChain);
        return template;
    }}

2.通过OAuth2RestTemplate去获取access_token的值，之所以每次都情况授权code，是因为spring oauth2授权code只能用一次便废弃，然后起OAuth2ClientContext类又不主动清空code，这里我只能自己手动清除。

@Component
public class AccessTokenUtils {    private final static Logger logger = Logger.getLogger(AccessTokenUtils.class);    @Autowired
    private OAuth2RestTemplate restTemplate;    @Autowired
    private Oauth2Config oauth2Config;    /**
     * 获取oauth2的授权令牌access_token
     * @return
     */
    public  String getAccessToken(){
        logger.info("获取oauth2的授权令牌access_token start ...");
        OAuth2ClientContext oAuth2ClientContext = restTemplate.getOAuth2ClientContext();
        oAuth2ClientContext.getAccessTokenRequest().setAuthorizationCode(null);//清空授权code
        String stateKey = oAuth2ClientContext.getAccessTokenRequest().getStateKey();
        Object preservedState = oAuth2ClientContext.getAccessTokenRequest().getPreservedState();
        if(StringUtils.isEmpty(stateKey))
            stateKey = new DefaultStateKeyGenerator().generateKey(oauth2Config.resourceDetails());
        if(preservedState == null )
            preservedState = VipConstant.redirtUrl;        logger.info("statekey：" + stateKey + " ; preservedState : " + preservedState);
        oAuth2ClientContext.setPreservedState(oAuth2ClientContext.getAccessTokenRequest().getStateKey(), oAuth2ClientContext.getAccessTokenRequest().getPreservedState());
        OAuth2AccessToken oAuth2AccessToken = this.restTemplate.getAccessToken();
        String access_token = oAuth2AccessToken.getValue();
        logger.info("获取oauth2的授权令牌access_token end ；access_token = " +  access_token + "；失效时间 = " + oAuth2AccessToken.getExpiration() + " ；剩余失效时间：" + oAuth2AccessToken.getExpiresIn() );
        return access_token;
    }}

3.以下配置是授权服务给配置的

#==================spring oauth2.0=====================================
#客户端ID
client_id=xxx
#公钥(BASE64(xx))
public_key=xxx
#私钥(BASE64(xx))
private_key=xx
#spring oauth2.0服务url
oauth_url=xxx
#获取请求code URL
request_code_url=oauth/authorize
#获取请求token或刷新token URL
request_and_refresh_token=oauth/token
#回调地址
redirect_uri=http://www.baidu.com

Spring OAuth2.0 Client官网地址：http://projects.spring.io/spring-security-oauth/docs/oauth2.html