update

Codings/BackupService.java

@@ -0,0 +1,217 @@
+package org.sobyte.service;
+
+import java.io.BufferedOutputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.time.format.DateTimeFormatter;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.commons.exec.CommandLine;
+import org.apache.commons.exec.DefaultExecutor;
+import org.apache.commons.exec.ExecuteWatchdog;
+import org.apache.commons.exec.PumpStreamHandler;
+import org.apache.commons.io.FileUtils;
+import org.sobyte.constant.SystemConstant;
+import org.sobyte.model.dto.BackupFileDTO;
+import org.sobyte.utils.ZipUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.zaxxer.hikari.HikariDataSource;
+
+import lombok.extern.slf4j.Slf4j;
+
+/**
+ * 
+ * 
+ * 数据备份服务
+ * 
+ * @author KevinBlandy
+ *
+ */
+@Service
+@Slf4j
+public class BackupService {
+
+	public static final DateTimeFormatter BACK_UP_FILE_NAME_FORMATTER = DateTimeFormatter
+			.ofPattern("yyyyMMddHHmmssSSS");
+
+	@Autowired
+	private HikariDataSource hikariDataSource;
+
+	/**
+	 * 读取缓存的文件列表
+	 * 
+	 * @return
+	 * @throws IOException
+	 */
+	public List<BackupFileDTO> list() throws IOException {
+
+		if (Files.notExists(SystemConstant.BACK_PATH)) {
+			return List.of();
+		}
+
+		return Files.list(SystemConstant.BACK_PATH).filter(file -> !Files.isDirectory(file)).sorted((p1, p2) -> {
+			try {
+				return Files.readAttributes(p1, BasicFileAttributes.class).creationTime()
+						.compareTo(Files.readAttributes(p2, BasicFileAttributes.class).creationTime());
+			} catch (IOException e) {
+				throw new RuntimeException(e);
+			}
+		}).map(file -> {
+			try {
+				return BackupFileDTO.builder().name(file.getFileName().toString())
+						.creatAt(LocalDateTime.ofInstant(
+								Files.readAttributes(file, BasicFileAttributes.class).creationTime().toInstant(),
+								ZoneId.systemDefault()))
+						.build();
+			} catch (IOException e) {
+				throw new RuntimeException(e);
+			}
+		}).toList();
+	}
+
+	/*
+	 * /backup
+	 * 
+	 */
+	/**
+	 *
+	 * 执行文件备份操作
+	 * 
+	 * @throws IOException
+	 */
+	public void backup() throws IOException {
+		// 创建临时工作目录
+		Path tempDir = Files.createDirectories(SystemConstant.BACK_PATH.resolve("temp"));
+		try {
+			log.info("压缩资源文件...");
+
+			/**
+			 * 压缩资源文件
+			 */
+			Path publicFile = ZipUtils.zip(SystemConstant.UPLOAD_PATH.getParent(), tempDir.resolve("public.zip"));
+
+			log.info("资源文件压缩完毕: {}", publicFile);
+
+			/**
+			 * SQL资源文件导出 ！！！只能导出本地MYSQL服务器上的数据，如果MYSQL服务器在其他机器，则会执行失败
+			 */
+			Path sqlFile = tempDir.resolve("db.sql");
+
+			mysqlDump(sqlFile);
+
+			if (!Files.exists(sqlFile)) {
+				// SQL导出失败的情况下， 创建空文件
+				Files.createFile(sqlFile);
+			}
+
+			Path backUpFile = SystemConstant.BACK_PATH
+					.resolve("backup-" + BACK_UP_FILE_NAME_FORMATTER.format(LocalDateTime.now()) + ".zip");
+
+			log.info("打包文件: {}", backUpFile);
+
+			ZipUtils.zip(new Path[] { publicFile, sqlFile }, backUpFile);
+
+			log.info("备份成功");
+		} finally {
+			// 清空工作目录
+			FileUtils.cleanDirectory(tempDir.toFile());
+		}
+	}
+
+	/**
+	 * 导出SQL文件
+	 * 
+	 * @param file 导出的SQL文件
+	 */
+	private void mysqlDump(Path file) {
+
+		// 获取当前数据库名称
+		String database = null;
+
+		try (Connection connection = hikariDataSource.getConnection()) {
+			try (ResultSet resultSet = connection.createStatement().executeQuery("SELECT DATABASE();")) {
+				if (resultSet.next()) {
+					database = resultSet.getString(1);
+				}
+			}
+		} catch (SQLException e) {
+			throw new RuntimeException(e);
+		}
+
+		ByteArrayOutputStream stdErr = new ByteArrayOutputStream();
+
+		try (OutputStream stdOut = new BufferedOutputStream(Files.newOutputStream(file, StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING))) {
+
+			DefaultExecutor defaultExecutor = new DefaultExecutor();
+			defaultExecutor.setWatchdog(new ExecuteWatchdog(TimeUnit.MINUTES.toMillis(10))); // 超时时间，10分钟
+			defaultExecutor.setStreamHandler(new PumpStreamHandler(stdOut, stdErr));
+
+			CommandLine commandLine = new CommandLine("mysqldump");
+			commandLine.addArgument("-u" + hikariDataSource.getUsername()); // 用户名
+			commandLine.addArgument("-p" + hikariDataSource.getPassword()); // 密码
+			commandLine.addArgument(database);
+
+			log.info("导出SQL数据...");
+
+			// 同步执行，返回执行结果
+			int exitCode = defaultExecutor.execute(commandLine);
+
+			// 异步执行
+//				DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();
+//				defaultExecutor.execute(commandLine, resultHandler);
+//
+//				// 阻塞，直到执行完毕
+//				resultHandler.waitFor();
+
+			log.info("SQL数据导出完毕: exitCode={}, sqlFile={}", exitCode, file.toString());
+
+		} catch (Exception e) {
+			log.error("SQL数据导出异常: {}", e.getMessage());
+			log.error("std err: {}{}", System.lineSeparator(), stdErr.toString());
+		}
+	}
+
+	/**
+	 * 从PATH中解析出可执行文件的绝对路径
+	 * 
+	 * @param execute
+	 * @return
+	 */
+//	protected String lockPath(String execute) {
+//		// 从path中解析可执行文件的绝对路径
+//		String path = System.getenv("PATH");
+//
+//		String separator = System.getProperty("path.separator");
+//
+//		String[] suffixs = null;
+//
+//		if (SystemUtils.IS_OS_WINDOWS) {
+//			suffixs = new String[] { ".exe", ".bat", ".cmd" };
+//		} else {
+//			suffixs = new String[] { "" };
+//		}
+//
+//		for (String dir : path.split(separator)) {
+//			for (String suffix : suffixs) {
+//				Path file = Paths.get(dir, execute + suffix);
+//				if (Files.exists(file)) {
+//					return file.toString();
+//				}
+//			}
+//		}
+//		return null;
+//	}
+}

Codings/CRC.java

@@ -0,0 +1,50 @@
+----------------
+CRC16
+----------------
+import io.netty.buffer.ByteBuf;
+
+public class CRC16 {
+
+	private static final int[] LOOKUP_TABLE = { 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7, 0x8108,
+			0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF, 0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294,
+			0x72F7, 0x62D6, 0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE, 0x2462, 0x3443, 0x0420,
+			0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
+			0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4, 0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF,
+			0xE7FE, 0xD79D, 0xC7BC, 0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823, 0xC9CC, 0xD9ED,
+			0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B, 0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33,
+			0x2A12, 0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A, 0x6CA6, 0x7C87, 0x4CE4, 0x5CC5,
+			0x2C22, 0x3C03, 0x0C60, 0x1C41, 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49, 0x7E97,
+			0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70, 0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A,
+			0x9F59, 0x8F78, 0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F, 0x1080, 0x00A1, 0x30C2,
+			0x20E3, 0x5004, 0x4025, 0x7046, 0x6067, 0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
+			0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256, 0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E,
+			0xE54F, 0xD52C, 0xC50D, 0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xA7DB, 0xB7FA,
+			0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C, 0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615,
+			0x5634, 0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB, 0x5844, 0x4865, 0x7806, 0x6827,
+			0x18C0, 0x08E1, 0x3882, 0x28A3, 0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A, 0x4A75,
+			0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92, 0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B,
+			0x9DE8, 0x8DC9, 0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1, 0xEF1F, 0xFF3E, 0xCF5D,
+			0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8, 0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0 };
+
+	private CRC16() {
+	}
+
+	public static int crc16(byte[] bytes) {
+		int crc = 0x0000;
+
+		for (byte b : bytes) {
+			crc = (crc << 8) ^ LOOKUP_TABLE[((crc >>> 8) ^ (b & 0xFF)) & 0xFF];
+		}
+		return crc & 0xFFFF;
+	}
+
+	public static int crc16(ByteBuf bytes) {
+		int crc = 0x0000;
+
+		for (int i = 0; i < bytes.readableBytes(); i++) {
+			crc = (crc << 8) ^ LOOKUP_TABLE[((crc >>> 8) ^ (bytes.readByte() & 0xFF)) & 0xFF];
+		}
+
+		return crc & 0xFFFF;
+	}
+}

Freemarker/freemarker-模板语言-指令.java

@@ -37,6 +37,10 @@
 	# 属性
 		single_line 
 			* bool值,如果该值为 true,则会连换行都一起移除
+
+		<#compress>
+		  ...
+		</#compress>
 
 ------------
 escape		|

Go/go-vscode.go

@@ -0,0 +1,8 @@
+---------------- 
+vscode 开发环境
+----------------
+	# 编辑器字体(settings.json)
+		"editor.fontFamily":"Courier New",
+		"editor.fontWeight": "bold",
+		"editor.fontSize": 16,
+

Go/lib/os/exec.go

@@ -35,6 +35,8 @@ type
 				* 错误输出，如果这两个（Stdout和Stderr）为空的话，则command运行时将响应的文件描述符连接到os.DevNull  
 
 			ExtraFiles []*os.File
+				* 指定由新进程继承的其他 open files
+				* windows 上不支持
 
 			SysProcAttr *syscall.SysProcAttr
 				* 系统进程信息

Go/utils/常用方法.go

@@ -0,0 +1,19 @@
+
+--------------------------------
+获取客户端的真实IP
+--------------------------------
+	// RemoteIP 获取客户端真实的地址
+	func RemoteIP(ctx *gin.Context) net.IP {
+		remoteIp := net.ParseIP(ctx.GetHeader("x-forwarded-for"))
+		if remoteIp == nil {
+			remoteIp = net.ParseIP(ctx.GetHeader("Proxy-Client-IP"))
+			if remoteIp == nil {
+				remoteIp = net.ParseIP(ctx.GetHeader("WL-Proxy-Client-IP"))
+				if remoteIp == nil {
+					remoteIp, _ = ctx.RemoteIP()
+				}
+			}
+		}
+		return remoteIp
+	}
+

Java/util/zip/CRC32.java

@@ -0,0 +1,15 @@
+-------------
+CRC32
+-------------
+	# CRC32 校验器
+		public class CRC32 implements Checksum
+
+
+	public CRC32()
+	public void update(int b)
+	public void update(byte[] b, int off, int len)
+	public void update(ByteBuffer buffer)
+	public void reset()
+	public long getValue()
+
+

Netty/netty-buffer-ByteBufUtil.java

@@ -3,14 +3,18 @@
 ---------------------------------
 	# 提供了很多的静态API可以操作buf
 
+	byte[] getBytes(ByteBuf buf, int start, int length, boolean copy)
+		* 读取字节数组，不会修改readerIndex
+		* start 开始角标，lengt 读取数量
+		* copy 默认true，返回新的数组。如果false会尝过通过反射，返回同一个数组，底层共享（如果尝试失败，仍然会copy数组）
 
 	String hexDump(ByteBuf buffer)
-		* 返回buffer的16进制字符串,会根据rindex去读取
+		* 返回buffer的16进制字符串,会根据rindex去读取，不会修改ReaderIndex
 
 	String hexDump(byte[] array)
 		* 返回 byte[] 的16进制字符串
 
 	byte[] decodeHexDump(CharSequence hexDump)
 		* 把16进制字符串转换为字节数组
 
-
+

Quarkus/cdi/cdi.java

@@ -0,0 +1,13 @@
+---------
+CDI
+---------
+	# Contexts and Dependency Injection for Java 2.0 (JSR 365规范)
+
+	# 文档
+		https://quarkus.io/guides/cdi
+		https://quarkus.io/guides/cdi-reference
+
+		https://jakarta.ee/specifications/cdi/2.0/cdi-spec-2.0.html
+		https://docs.jboss.org/weld/reference/latest/en-US/html/
+
+

Quarkus/quarkus-GraalVM.java

@@ -0,0 +1,7 @@
+----------------
+GraalVM
+----------------
+	# 地址
+		https://www.graalvm.org/
+		https://github.com/oracle/graal
+