refactor: optimize MapperHandler

mybatis-flex-core/src/main/java/com/mybatisflex/core/mybatis/Mappers.java

@@ -47,6 +47,7 @@ public class Mappers {
 
     /**
      * 通过 entity Class 获取 Mapper 对象
+     *
      * @param entityClass
      * @param <Entity>
      * @return mapper 对象
@@ -75,8 +76,8 @@ public class Mappers {
     }
 
 
-
     static class MapperHandler implements InvocationHandler {
+
         private Class<?> mapperClass;
         private final SqlSessionFactory sqlSessionFactory = FlexGlobalConfig.getDefaultConfig().getSqlSessionFactory();
         private final ExecutorType executorType = FlexGlobalConfig.getDefaultConfig().getConfiguration().getDefaultExecutorType();
@@ -91,9 +92,15 @@ public class Mappers {
 
         @Override
         public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
-            try (SqlSession sqlSession = openSession()) {
-                Object mapper = sqlSession.getMapper(mapperClass);
-                return method.invoke(mapper, args);
+            if ("getClass".equals(method.getName())) {
+                return mapperClass;
+            } else if ("toString".equals(method.getName())) {
+                return mapperClass.getName();
+            } else {
+                try (SqlSession sqlSession = openSession()) {
+                    Object mapper = sqlSession.getMapper(mapperClass);
+                    return method.invoke(mapper, args);
+                }
             }
         }
     }

mybatis-flex-core/src/main/java/com/mybatisflex/core/util/ClassUtil.java

@@ -24,13 +24,27 @@ import java.util.function.Predicate;
 
 /**
  * 类实例创建者创建者
- * Created by michael on 17/3/21.
+ *
+ * @author michael
+ * @date 17/3/21
  */
 public class ClassUtil {
 
     private ClassUtil() {
     }
 
+    private static final String[] OBJECT_METHODS = new String[]{
+        "toString",
+        "getClass",
+        "equals",
+        "hashCode",
+        "wait",
+        "notify",
+        "notifyAll",
+        "clone",
+        "finalize"
+    };
+
     //proxy frameworks
     private static final List<String> PROXY_CLASS_NAMES = Arrays.asList("net.sf.cglib.proxy.Factory"
         // cglib
@@ -299,4 +313,8 @@ public class ClassUtil {
         }
     }
 
+    public static boolean isObjectMethod(String methodName) {
+        return ArrayUtil.contains(OBJECT_METHODS, methodName);
+    }
+
 }