fix code

hutool-http/pom.xml

@@ -22,6 +22,11 @@
 			<artifactId>hutool-core</artifactId>
 			<version>${project.parent.version}</version>
 		</dependency>
+		<dependency>
+			<groupId>cn.hutool</groupId>
+			<artifactId>hutool-log</artifactId>
+			<version>${project.parent.version}</version>
+		</dependency>
 		<dependency>
 			<groupId>javax.xml.soap</groupId>
 			<artifactId>javax.xml.soap-api</artifactId>

hutool-http/src/main/java/cn/hutool/http/client/engine/ClientEngineFactory.java

@@ -0,0 +1,53 @@
+package cn.hutool.http.client.engine;
+
+import cn.hutool.core.lang.Singleton;
+import cn.hutool.core.text.StrUtil;
+import cn.hutool.core.util.ServiceLoaderUtil;
+import cn.hutool.http.HttpException;
+import cn.hutool.http.client.ClientEngine;
+import cn.hutool.log.StaticLog;
+
+/**
+ * Http客户端引擎工厂类
+ *
+ * @author looly
+ * @since 6.0.0
+ */
+public class ClientEngineFactory {
+
+	/**
+	 * 获得单例的ClientEngine
+	 *
+	 * @return 单例的ClientEngine
+	 */
+	public static ClientEngine get() {
+		return Singleton.get(ClientEngine.class.getName(), ClientEngineFactory::of);
+	}
+
+	/**
+	 * 根据用户引入的拼音引擎jar，自动创建对应的拼音引擎对象<br>
+	 * 推荐创建的引擎单例使用，此方法每次调用会返回新的引擎
+	 *
+	 * @return {@code ClientEngine}
+	 */
+	public static ClientEngine of() {
+		final ClientEngine engine = doCreate();
+		StaticLog.debug("Use [{}] Http Engine As Default.", StrUtil.removeSuffix(engine.getClass().getSimpleName(), "Engine"));
+		return engine;
+	}
+
+	/**
+	 * 根据用户引入的拼音引擎jar，自动创建对应的拼音引擎对象<br>
+	 * 推荐创建的引擎单例使用，此方法每次调用会返回新的引擎
+	 *
+	 * @return {@code EngineFactory}
+	 */
+	private static ClientEngine doCreate() {
+		final ClientEngine engine = ServiceLoaderUtil.loadFirstAvailable(ClientEngine.class);
+		if (null != engine) {
+			return engine;
+		}
+
+		throw new HttpException("No http jar found ! Please add one of it to your project !");
+	}
+}

hutool-http/src/main/java/cn/hutool/http/client/engine/EngineFactory.java

@@ -1,13 +0,0 @@
-package cn.hutool.http.client.engine;
-
-import cn.hutool.http.client.ClientEngine;
-
-/**
- * Http客户端引擎工厂类
- */
-public class EngineFactory {
-
-	public static ClientEngine getEngine(){
-		return null;
-	}
-}

hutool-http/src/main/resources/META-INF/services/cn.hutool.http.client.ClientEngine

@@ -0,0 +1,3 @@
+cn.hutool.http.client.engine.httpclient5.HttpClient5Engine
+cn.hutool.http.client.engine.httpclient4.HttpClient4Engine
+cn.hutool.http.client.engine.okhttp.OkHttpEngine

hutool-http/src/test/java/cn/hutool/http/client/ClientEngineFactoryTest.java

@@ -0,0 +1,13 @@
+package cn.hutool.http.client;
+
+import cn.hutool.http.client.engine.ClientEngineFactory;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ClientEngineFactoryTest {
+	@Test
+	public void getTest() {
+		final ClientEngine clientEngineFactory = ClientEngineFactory.get();
+		Assert.assertNotNull(clientEngineFactory);
+	}
+}

hutool-http/src/test/java/cn/hutool/http/client/HttpClient4EngineTest.java

@@ -1,8 +1,8 @@
 package cn.hutool.http.client;
 
 import cn.hutool.core.lang.Console;
-import cn.hutool.http.meta.Method;
 import cn.hutool.http.client.engine.httpclient4.HttpClient4Engine;
+import cn.hutool.http.meta.Method;
 import org.junit.Ignore;
 import org.junit.Test;
 

hutool-http/src/test/resources/simplelogger.properties

@@ -0,0 +1 @@
+org.slf4j.simpleLogger.defaultLogLevel=debug