change capacity

CHANGELOG.md

@@ -13,6 +13,7 @@
 * 【core   】     NumberUtil的decimalFormat增加数字检查
 * 【http   】     HttpBase的httpVersion方法设置为无效(issue#1644@Github)
 * 【extra  】     Sftp增加download重载(issue#I3VBSL@Gitee)
+* 【cache  】     修改FIFOCache初始大小(issue#1647@Github)
 
 ### 🐞Bug修复
 * 【db     】     修复count方法丢失参数问题(issue#I3VBSL@Gitee)

hutool-cache/src/main/java/cn/hutool/cache/impl/FIFOCache.java

@@ -37,7 +37,7 @@ public class FIFOCache<K, V> extends AbstractCache<K, V> {
 	public FIFOCache(int capacity, long timeout) {
 		this.capacity = capacity;
 		this.timeout = timeout;
-		cacheMap = new LinkedHashMap<>(Math.max(1 << 4, capacity >>> 7), 1.0f, false);
+		cacheMap = new LinkedHashMap<>(capacity + 1, 1.0f, false);
 	}
 
 	/**

hutool-core/src/main/java/cn/hutool/core/io/AppendableWriter.java

@@ -0,0 +1,106 @@
+package cn.hutool.core.io;
+
+import java.io.Closeable;
+import java.io.Flushable;
+import java.io.IOException;
+import java.io.Writer;
+import java.nio.CharBuffer;
+
+/**
+ * 同时继承{@link Writer}和实现{@link Appendable}的聚合类，用于适配两种接口操作
+ * 实现来自：jodd
+ *
+ * @author looly，jodd
+ * @since 5.7.0
+ */
+public class AppendableWriter extends Writer implements Appendable {
+
+	private final Appendable appendable;
+	private final boolean flushable;
+	private boolean closed;
+
+	public AppendableWriter(final Appendable appendable) {
+		this.appendable = appendable;
+		this.flushable = appendable instanceof Flushable;
+		this.closed = false;
+	}
+
+	@Override
+	public void write(final char[] cbuf, final int off, final int len) throws IOException {
+		checkNotClosed();
+		appendable.append(CharBuffer.wrap(cbuf), off, off + len);
+	}
+
+	@Override
+	public void write(final int c) throws IOException {
+		checkNotClosed();
+		appendable.append((char) c);
+	}
+
+	@Override
+	public Writer append(final char c) throws IOException {
+		checkNotClosed();
+		appendable.append(c);
+		return this;
+	}
+
+	@Override
+	public Writer append(final CharSequence csq, final int start, final int end) throws IOException {
+		checkNotClosed();
+		appendable.append(csq, start, end);
+		return this;
+	}
+
+	@Override
+	public Writer append(final CharSequence csq) throws IOException {
+		checkNotClosed();
+		appendable.append(csq);
+		return this;
+	}
+
+	@Override
+	public void write(final String str, final int off, final int len) throws IOException {
+		checkNotClosed();
+		appendable.append(str, off, off + len);
+	}
+
+	@Override
+	public void write(final String str) throws IOException {
+		appendable.append(str);
+	}
+
+	@Override
+	public void write(final char[] cbuf) throws IOException {
+		appendable.append(CharBuffer.wrap(cbuf));
+	}
+
+	@Override
+	public void flush() throws IOException {
+		checkNotClosed();
+		if (flushable) {
+			((Flushable) appendable).flush();
+		}
+	}
+
+	/**
+	 * 检查Writer是否已经被关闭
+	 *
+	 * @throws IOException IO异常
+	 */
+	private void checkNotClosed() throws IOException {
+		if (closed) {
+			throw new IOException("Writer is closed!" + this);
+		}
+	}
+
+	@Override
+	public void close() throws IOException {
+		if (false == closed) {
+			flush();
+			if (appendable instanceof Closeable) {
+				((Closeable) appendable).close();
+			}
+			closed = true;
+		}
+	}
+}

hutool-core/src/main/java/cn/hutool/core/io/ManifestUtil.java

@@ -0,0 +1,58 @@
+package cn.hutool.core.io;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.jar.JarFile;
+import java.util.jar.Manifest;
+
+/**
+ * Jar包中manifest.mf文件获取和解析工具类
+ * 来自Jodd
+ *
+ * @author looly, jodd
+ * @since 5.7.0
+ */
+public class ManifestUtil {
+	private static final String[] MANIFEST_NAMES = {"Manifest.mf", "manifest.mf", "MANIFEST.MF"};
+
+	public static Manifest getManifest(File classpathItem) {
+		Manifest manifest = null;
+
+		if (classpathItem.isFile()) {
+			JarFile jar = null;
+			try {
+				jar = new JarFile(classpathItem);
+				manifest = jar.getManifest();
+			} catch (final IOException ignore) {
+			} finally {
+				IoUtil.close(jar);
+			}
+		} else {
+			final File metaDir = new File(classpathItem, "META-INF");
+			File manifestFile = null;
+			if (metaDir.isDirectory()) {
+				for (final String name : MANIFEST_NAMES) {
+					final File mFile = new File(metaDir, name);
+					if (mFile.isFile()) {
+						manifestFile = mFile;
+						break;
+					}
+				}
+			}
+			if (manifestFile != null) {
+				FileInputStream fis = null;
+				try {
+					fis = new FileInputStream(manifestFile);
+					manifest = new Manifest(fis);
+				} catch (final IOException ignore) {
+				}
+				finally {
+					IoUtil.close(fis);
+				}
+			}
+		}
+
+		return manifest;
+	}
+}

hutool-core/src/main/java/cn/hutool/core/util/ClassLoaderUtil.java

@@ -8,6 +8,8 @@ import cn.hutool.core.lang.SimpleCache;
 
 import java.io.File;
 import java.lang.reflect.Array;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -21,18 +23,30 @@ import java.util.concurrent.ConcurrentHashMap;
  */
 public class ClassLoaderUtil {
 
-	/** 数组类的结尾符: "[]" */
+	/**
+	 * 数组类的结尾符: "[]"
+	 */
 	private static final String ARRAY_SUFFIX = "[]";
-	/** 内部数组类名前缀: "[" */
+	/**
+	 * 内部数组类名前缀: "["
+	 */
 	private static final String INTERNAL_ARRAY_PREFIX = "[";
-	/** 内部非原始类型类名前缀: "[L" */
+	/**
+	 * 内部非原始类型类名前缀: "[L"
+	 */
 	private static final String NON_PRIMITIVE_ARRAY_PREFIX = "[L";
-	/** 包名分界符: '.' */
+	/**
+	 * 包名分界符: '.'
+	 */
 	private static final char PACKAGE_SEPARATOR = StrUtil.C_DOT;
-	/** 内部类分界符: '$' */
+	/**
+	 * 内部类分界符: '$'
+	 */
 	private static final char INNER_CLASS_SEPARATOR = '$';
 
-	/** 原始类型名和其class对应表，例如：int =》 int.class */
+	/**
+	 * 原始类型名和其class对应表，例如：int =》 int.class
+	 */
 	private static final Map<String, Class<?>> PRIMITIVE_TYPE_NAME_MAP = new ConcurrentHashMap<>(32);
 	private static final SimpleCache<String, Class<?>> CLASS_CACHE = new SimpleCache<>();
 
@@ -62,8 +76,32 @@ public class ClassLoaderUtil {
 	 * @see Thread#getContextClassLoader()
 	 */
 	public static ClassLoader getContextClassLoader() {
+		if (System.getSecurityManager() == null) {
 			return Thread.currentThread().getContextClassLoader();
+		} else {
+			// 绕开权限检查
+			return AccessController.doPrivileged(
+					(PrivilegedAction<ClassLoader>) () -> Thread.currentThread().getContextClassLoader());
 		}
+	}
+
+	/**
+	 * 获取系统{@link ClassLoader}
+	 *
+	 * @return 系统{@link ClassLoader}
+	 * @see ClassLoader#getSystemClassLoader()
+	 * @since 5.7.0
+	 */
+	public static ClassLoader getSystemClassLoader() {
+		if (System.getSecurityManager() == null) {
+			return ClassLoader.getSystemClassLoader();
+		} else {
+			// 绕开权限检查
+			return AccessController.doPrivileged(
+					(PrivilegedAction<ClassLoader>) ClassLoader::getSystemClassLoader);
+		}
+	}
+
 
 	/**
 	 * 获取{@link ClassLoader}<br>
@@ -82,13 +120,14 @@ public class ClassLoaderUtil {
 		if (classLoader == null) {
 			classLoader = ClassLoaderUtil.class.getClassLoader();
 			if (null == classLoader) {
-				classLoader = ClassLoader.getSystemClassLoader();
+				classLoader = getSystemClassLoader();
 			}
 		}
 		return classLoader;
 	}
 
 	// ----------------------------------------------------------------------------------- loadClass
+
 	/**
 	 * 加载类，通过传入类的字符串，返回其对应的类名，使用默认ClassLoader并初始化类（调用static模块内容和初始化static属性）<br>
 	 * 扩展{@link Class#forName(String, boolean, ClassLoader)}方法，支持以下几类类名的加载：
@@ -236,6 +275,7 @@ public class ClassLoaderUtil {
 	}
 
 	// ----------------------------------------------------------------------------------- isPresent
+
 	/**
 	 * 指定类是否被提供，使用默认ClassLoader<br>
 	 * 通过调用{@link #loadClass(String, ClassLoader, boolean)}方法尝试加载指定类名的类，如果加载失败返回false<br>
@@ -267,6 +307,7 @@ public class ClassLoaderUtil {
 	}
 
 	// ----------------------------------------------------------------------------------- Private method start
+
 	/**
 	 * 尝试转换并加载内部类，例如java.lang.Thread.State =》java.lang.Thread$State
 	 *