enjoy 3.5

src/main/java/com/jfinal/template/stat/OutputDirectiveFactory.java

@@ -0,0 +1,60 @@
+/**
+ * Copyright (c) 2011-2019, James Zhan 詹波 (jfinal@126.com).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jfinal.template.stat;
+
+import com.jfinal.template.expr.ast.ExprList;
+import com.jfinal.template.stat.ast.Output;
+
+/**
+ * OutputDirectiveFactory
+ * 用于定制自定义输出指令，替换系统默认输出指令，满足个性化需求
+ * 
+ * 用法：
+ * 1：定义 MyOutput
+ * public class MyOutput extends Output {
+ *   public MyOutput(ExprList exprList) {
+ *     super(exprList);
+ *   }
+ *   
+ *   public void exec(Env env, Scope scope, Writer writer) {
+ *     Object value = exprList.eval(scope);
+ *     if (value != null) {
+ *     	  write(writer, value.toString());
+ *     }
+ *   }
+ * }
+ * 
+ * 2：定义 MyOutputDirectiveFactory
+ * public class MyOutputDirectiveFactory extends OutputDirectiveFactory {
+ *   public Output getOutputDirective(ExprList exprList) {
+ *     return new MyOutput(exprList);
+ *   }
+ * }
+ * 
+ * 3：配置
+ * engine.setOutputDirectiveFactory(new MyOutputDirectiveFactory())
+ */
+public class OutputDirectiveFactory {
+	
+	public static final OutputDirectiveFactory me = new OutputDirectiveFactory();
+	
+	public Output getOutputDirective(ExprList exprList, Location location) {
+		return new Output(exprList, location);
+	}
+}
+
+