获取三方实例 部分 进行重构，使之可以进行更简单的获取对应的实例。

如之前获取对应的实例：
        switch (source.toLowerCase()) {
            case "dingtalk":
                authRequest = new AuthDingTalkRequest(AuthConfig.builder()
                        .clientId("")
                        .clientSecret("")
                        .redirectUri("http://localhost:8443/oauth/callback/dingtalk")
                        .build());
                break;
            case "baidu":
                authRequest = new AuthBaiduRequest(AuthConfig.builder()
                        .clientId("")
                        .clientSecret("")
                        .redirectUri("http://localhost:8443/oauth/callback/baidu")
                        .scopes(Arrays.asList(
                                AuthBaiduScope.BASIC.getScope(),
                                AuthBaiduScope.SUPER_MSG.getScope(),
                                AuthBaiduScope.NETDISK.getScope()
                        ))
                        .build());
                break;
               }
上面需要调用端自己去根据source编码进行 new 对应的子类，这是不合理的。调用者应该只需要关心source码和对应的配置。
现在重构后，调用端只需要传入对应的source 和自定义的配置 通过统一的入口就可以拿到正确的实例。不需要调用端做各种判断，所有逻辑判断在服务端这边做好了处理。
调用端代码如下：
        AuthDefaultSource defaultSource = AuthDefaultSource.getAuthSource("wechat_mp");
        AuthRequest request = defaultSource.getAuthRequestInstance(AuthConfig.builder()
            .clientId("a")
            .clientSecret("a")
            .redirectUri("https://www.justauth.cn")
            .build());

src/main/java/me/zhyd/oauth/config/AuthConfig.java

@@ -155,6 +155,7 @@ public class AuthConfig {
      * @since 1.16.0
      */
     private String authServerId;
+
     /**
      * 忽略校验 {@code redirectUri} 参数，默认不开启。当 {@code ignoreCheckRedirectUri} 为 {@code true} 时，
      * {@link me.zhyd.oauth.utils.AuthChecker#checkConfig(AuthConfig, AuthSource)} 将不会校验 {@code redirectUri} 的合法性。
@@ -163,6 +164,16 @@ public class AuthConfig {
      */
     private boolean ignoreCheckRedirectUri;
 
+    /**
+     * 代理地址
+     */
+    private String proxyHost;
+
+    /**
+     * 代理端口号
+     */
+    private Integer proxyPort;
+
     /**
      * 适配 builder 模式 set 值的情况
      *

src/main/java/me/zhyd/oauth/config/AuthSource.java

 package me.zhyd.oauth.config;
 
+import me.zhyd.oauth.cache.AuthStateCache;
 import me.zhyd.oauth.enums.AuthResponseStatus;
 import me.zhyd.oauth.exception.AuthException;
 import me.zhyd.oauth.model.AuthCallback;
+import me.zhyd.oauth.request.AuthRequest;
 
 /**
  * OAuth平台的API地址的统一接口，提供以下方法：
@@ -44,6 +46,21 @@ public interface AuthSource {
      */
     String userInfo();
 
+    /**
+     * 根据配置获取对应的实例
+     * @param authConfig 配置
+     * @return AuthRequest
+     */
+    AuthRequest getAuthRequestInstance(AuthConfig authConfig);
+
+    /**
+     * 根据配置和缓存获取对应的实例
+     * @param authConfig 配置
+     * @param authStateCache 缓存
+     * @return AuthRequest
+     */
+    AuthRequest getAuthRequestInstance(AuthConfig authConfig, AuthStateCache authStateCache);
+
     /**
      * 取消授权的api
      *

src/test/java/me/zhyd/oauth/config/AuthExtendSource.java

 package me.zhyd.oauth.config;
 
+import me.zhyd.oauth.cache.AuthStateCache;
+import me.zhyd.oauth.exception.AuthException;
+import me.zhyd.oauth.request.AuthExtendRequest;
+import me.zhyd.oauth.request.AuthRequest;
+
+import java.lang.reflect.Constructor;
+
 /**
  * 测试自定义实现{@link AuthSource}接口后的枚举类
  *
@@ -40,6 +47,32 @@ public enum AuthExtendSource implements AuthSource {
             return null;
         }
 
+        @Override
+        public AuthRequest getAuthRequestInstance(AuthConfig authConfig) {
+            return getAuthRequestInstance(authConfig,null);
+        }
+
+        @Override
+        public AuthRequest getAuthRequestInstance(AuthConfig authConfig, AuthStateCache authStateCache) {
+            try {
+                AuthRequest request;
+                Class<?> clazz = Class.forName(AuthExtendRequest.class.getName());
+                Constructor constructor;
+                if(authStateCache==null){
+                    constructor = clazz.getDeclaredConstructor(AuthConfig.class);
+                    constructor.setAccessible(true);
+                    request = (AuthRequest) constructor.newInstance(authConfig);
+                }else{
+                    constructor = clazz.getDeclaredConstructor(AuthConfig.class, AuthStateCache.class);
+                    constructor.setAccessible(true);
+                    request = (AuthRequest) constructor.newInstance(authConfig, authStateCache);
+                }
+                return request;
+            } catch (Exception e) {
+                throw new AuthException("未获取到有效的Auth配置");
+            }
+        }
+
         /**
          * 取消授权的api
          *

src/test/java/me/zhyd/oauth/request/AuthWeChatMpRequestTest.java

 package me.zhyd.oauth.request;
 
 import me.zhyd.oauth.config.AuthConfig;
+import me.zhyd.oauth.config.AuthDefaultSource;
 import me.zhyd.oauth.utils.AuthStateUtils;
 import org.junit.Test;
 
@@ -16,4 +17,14 @@ public class AuthWeChatMpRequestTest {
             .build());
         System.out.println(request.authorize(AuthStateUtils.createState()));
     }
+
+    @Test
+    public void authorize1() {
+        AuthRequest request = AuthDefaultSource.getAuthSource("wechat_mp").getAuthRequestInstance(AuthConfig.builder()
+            .clientId("a")
+            .clientSecret("a")
+            .redirectUri("https://www.justauth.cn")
+            .build());
+        System.out.println(request.authorize(AuthStateUtils.createState()));
+    }
 }