Enjoy 3.2 release ^_^

src/main/java/com/jfinal/template/expr/ast/StaticField.java

@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) 2011-2017, 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.expr.ast;
+
+import com.jfinal.template.TemplateException;
+import com.jfinal.template.stat.Location;
+import com.jfinal.template.stat.ParseException;
+import com.jfinal.template.stat.Scope;
+import java.lang.reflect.Field;
+
+/**
+ * StaticField : ID_list '::' ID
+ * 动态获取静态变量值，变量值改变时仍可正确获取
+ * 用法：com.jfinal.core.Const::JFINAL_VERSION
+ */
+public class StaticField extends Expr {
+	
+	private Class<?> clazz;
+	private String fieldName;
+	private Field field;
+	
+	public StaticField(String className, String fieldName, Location location) {
+		try {
+			this.clazz = Class.forName(className);
+			this.fieldName = fieldName;
+			this.field = clazz.getField(fieldName);
+			this.location = location;
+		} catch (Exception e) {
+			throw new ParseException(e.getMessage(), location, e);
+		}
+	}
+	
+	public Object eval(Scope scope) {
+		try {
+			return field.get(null);
+		} catch (Exception e) {
+			throw new TemplateException(e.getMessage(), location, e);
+		}
+	}
+	
+	public String toString() {
+		return clazz.getName() + "::" + fieldName;
+	}
+}
+
+
+
+
+
+
+