Enjoy 3.2 release ^_^

src/main/java/com/jfinal/template/source/FileSource.java

@@ -0,0 +1,133 @@
+/**
+ * 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.source;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import com.jfinal.template.EngineConfig;
+
+/**
+ * FileSource 用于从普通文件中加载模板内容
+ */
+public class FileSource implements ISource {
+	
+	private String finalFileName;
+	private String fileName;
+	private String encoding;
+	
+	private long lastModified;
+	
+	public FileSource(String baseTemplatePath, String fileName, String encoding) {
+		this.finalFileName = buildFinalFileName(baseTemplatePath, fileName);
+		this.fileName = fileName;
+		this.encoding= encoding;
+	}
+	
+	public FileSource(String baseTemplatePath, String fileName) {
+		this(baseTemplatePath, fileName, EngineConfig.DEFAULT_ENCODING);
+	}
+	
+	public boolean isModified() {
+		return lastModified != new File(finalFileName).lastModified();
+	}
+	
+	public String getKey() {
+		return fileName;
+	}
+	
+	public String getEncoding() {
+		return encoding;
+	}
+	
+	public String getFinalFileName() {
+		return finalFileName;
+	}
+	
+	public String getFileName() {
+		return fileName;
+	}
+	
+	public StringBuilder getContent() {
+		File file = new File(finalFileName);
+		if (!file.exists()) {
+			throw new RuntimeException("File not found : " + finalFileName);
+		}
+		
+		// 极为重要，否则在开发模式下 isModified() 一直返回 true，缓存一直失效（原因是 lastModified 默认值为 0）
+		this.lastModified = file.lastModified();
+		
+		return loadFile(file, encoding);
+	}
+	
+	private String buildFinalFileName(String baseTemplatePath, String fileName) {
+		char firstChar = fileName.charAt(0);
+		String finalFileName;
+		if (firstChar == '/' || firstChar == '\\') {
+			finalFileName = baseTemplatePath + fileName;
+		} else {
+			finalFileName = baseTemplatePath + File.separator + fileName;
+		}
+		return finalFileName;
+	}
+	
+	public static StringBuilder loadFile(File file, String encoding) {
+		StringBuilder ret = new StringBuilder((int)file.length() + 3);
+		BufferedReader br = null;
+		try {
+			br = new BufferedReader(new InputStreamReader(new FileInputStream(file), encoding));
+			// br = new BufferedReader(new FileReader(fileName));
+			String line = br.readLine();
+			if (line != null) {
+				ret.append(line);
+			} else {
+				return ret;
+			}
+			
+			while ((line=br.readLine()) != null) {
+				ret.append('\n').append(line);
+			}
+			return ret;
+		} catch (Exception e) {
+			throw new RuntimeException(e);
+		}
+		finally {
+			if (br != null) {
+				try {
+					br.close();
+				} catch (IOException e) {
+					// com.jfinal.kit.LogKit.error(e.getMessage(), e);
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+	
+	public String toString() {
+		StringBuilder sb = new StringBuilder();
+		sb.append("File name: ").append(fileName).append("\n");
+		sb.append("Final file name: ").append(finalFileName).append("\n");
+		sb.append("Last modified: ").append(lastModified).append("\n");
+		return sb.toString();
+	}
+}
+
+
+
+