优化

pom.xml

@@ -95,7 +95,12 @@
  <dependency>
     <groupId>org.apache.commons</groupId>
     <artifactId>commons-email</artifactId>
-    <version>1.5</version> <!-- 请使用最新的版本号 -->
+    <version>1.5</version>
+</dependency>
+<dependency>
+    <groupId>org.apache.commons</groupId>
+    <artifactId>commons-lang3</artifactId>
+    <version>3.12.0</version>
 </dependency>
     </dependencies>
     <repositories>

src/main/java/cc/baka9/catseedlogin/bukkit/database/BufferStatement.java

@@ -6,73 +6,30 @@
 import java.util.Arrays;
 
 public class BufferStatement {
-	private Object[] values;
-	private String query;
-	private Exception stacktrace;
+    private final Object[] values;
+    private final String query;
+    private final Exception stacktrace;
 
-	/**
-	 * Represents a PreparedStatement in a state before preparing it (E.g. No
-	 * file I/O Required)
-	 * 
-	 * @param query
-	 *            The query to execute. E.g. INSERT INTO accounts (user, passwd)
-	 *            VALUES (?, ?)
-	 * @param values
-	 *            The values to replace <bold>?</bold> with in
-	 *            <bold>query</bold>. These are in order.
-	 */
-	private static final Exception sharedException = new Exception();
+    public BufferStatement(String query, Object... values) {
+        this.query = query;
+        this.values = values;
+        this.stacktrace = new Exception();
+    }
 
-	public BufferStatement(String query, Object... values) {
-		this.query = query;
-		this.values = values;
-		this.stacktrace = sharedException; // 重复利用一个已存在的 Exception 对象
-		this.stacktrace.fillInStackTrace();
-	}
+    public PreparedStatement prepareStatement(Connection con) throws SQLException {
+        PreparedStatement ps = con.prepareStatement(query);
+        for (int i = 0; i < values.length; i++) {
+            ps.setObject(i + 1, values[i]);
+        }
+        return ps;
+    }
 
-	/**
-	 * Returns a prepared statement using the given connection. Will try to
-	 * return an empty statement if something went wrong. If that fails, returns
-	 * null.
-	 * 
-	 * This method escapes everything automatically.
-	 * 
-	 * @param con
-	 *            The connection to prepare this on using
-	 *            con.prepareStatement(..)
-	 * @return The prepared statement, ready for execution.
-	 */
-	public PreparedStatement prepareStatement(Connection con) throws SQLException {
-		PreparedStatement ps;
-		int valuesLength = values.length; // 缓存数组长度
-		ps = con.prepareStatement(query);
-		for (int i = 0; i < valuesLength; i++) {
-			ps.setObject(i + 1, values[i]);
-		}
-		return ps;
-	}
+    public StackTraceElement[] getStackTrace() {
+        return stacktrace.getStackTrace();
+    }
 
-	/**
-	 * Used for debugging. This stacktrace is recorded when the statement is
-	 * created, so printing it to the screen will provide useful debugging
-	 * information about where the query came from, if something went wrong
-	 * while executing it.
-	 * 
-	 * @return The stacktrace elements.
-	 */
-	public StackTraceElement[] getStackTrace() {
-		return stacktrace.getStackTrace();
-	}
-
-	/**
-	 * @return A string representation of this statement. Returns
-	 *         <italic>"Query: " + query + ", values: " +
-	 *         Arrays.toString(values).</italic>
-	 */
-	@Override
-	public String toString() {
-		StringBuilder sb = new StringBuilder();
-		sb.append("Query: ").append(query).append(", values: ").append(Arrays.toString(values));
-		return sb.toString();
-	}
-}
+    @Override
+    public String toString() {
+        return "Query: " + query + ", values: " + Arrays.toString(values);
+    }
+}

src/main/java/cc/baka9/catseedlogin/bukkit/database/Cache.java

@@ -1,27 +1,27 @@
 package cc.baka9.catseedlogin.bukkit.database;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
 import cc.baka9.catseedlogin.bukkit.CatSeedLogin;
 import cc.baka9.catseedlogin.bukkit.object.LoginPlayer;
 
-import java.util.*;
-
 public class Cache {
-    private static final Hashtable<String, LoginPlayer> PLAYER_HASHTABLE = new Hashtable<>();
+    private static final Map<String, LoginPlayer> PLAYER_HASHTABLE = new ConcurrentHashMap<>();
     public static volatile boolean isLoaded = false;
 
     public static List<LoginPlayer> getAllLoginPlayer(){
         synchronized (PLAYER_HASHTABLE) {
             return new ArrayList<>(PLAYER_HASHTABLE.values());
         }
-
     }
 
     public static LoginPlayer getIgnoreCase(String name){
-
         return PLAYER_HASHTABLE.get(name.toLowerCase());
     }
 
-
     public static void refreshAll(){
         isLoaded = false;
         CatSeedLogin.instance.runTaskAsync(() -> {
@@ -45,10 +45,12 @@ public static void refresh(String name){
             try {
                 LoginPlayer newLp = CatSeedLogin.sql.get(name);
                 String key = name.toLowerCase();
-                if (newLp != null) {
-                    PLAYER_HASHTABLE.put(key, newLp);
-                } else {
-                    PLAYER_HASHTABLE.remove(key);
+                synchronized (PLAYER_HASHTABLE) {
+                    if (newLp != null) {
+                        PLAYER_HASHTABLE.put(key, newLp);
+                    } else {
+                        PLAYER_HASHTABLE.remove(key);
+                    }
                 }
                 CatSeedLogin.instance.getLogger().info("缓存加载 " + PLAYER_HASHTABLE.size() + " 个数据");
             } catch (Exception e) {
@@ -57,4 +59,4 @@ public static void refresh(String name){
             }
         });
     }
-}
+}

src/main/java/cc/baka9/catseedlogin/util/Util.java

@@ -6,6 +6,8 @@
 import java.util.Random;
 import java.util.regex.Pattern;
 
+import org.apache.commons.lang3.RandomStringUtils;
+
 public class Util {
     private static final Pattern passwordDifficultyRegex = Pattern.compile("^(?![0-9]+$)(?![a-zA-Z]+$)[0-9A-Za-z]{6,16}$");
     private static final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
@@ -26,19 +28,11 @@ public static boolean checkMail(String e_mail) {
     }
 
     public static String randomStr() {
-        int leftLimit = 97; // letter 'a'
-        int rightLimit = 122; // letter 'z'
-        int targetStringLength = 10;
-        StringBuilder buffer = new StringBuilder(targetStringLength);
-        for (int i = 0; i < targetStringLength; i++) {
-            int randomLimitedInt = leftLimit + random.nextInt(rightLimit - leftLimit + 1);
-            buffer.append((char) randomLimitedInt);
-        }
-        return buffer.toString();
+        return RandomStringUtils.randomAlphanumeric(10);
     }
 
     public static boolean isOSLinux() {
         String os = System.getProperty("os.name");
         return os != null && os.toLowerCase().contains("linux");
     }
-}
+}