From 79914dabac38d83676ea16ff65da8d941a099285 Mon Sep 17 00:00:00 2001
From: Jay <csj123456>
Date: 星期二, 08 十月 2024 10:38:01 +0800
Subject: [PATCH] Merge remote-tracking branch 'origin/master'
---
iailab-module-model/iailab-module-model-biz/src/main/java/com/iailab/module/model/mpk/common/utils/DllUtils.java | 128 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 128 insertions(+), 0 deletions(-)
diff --git a/iailab-module-model/iailab-module-model-biz/src/main/java/com/iailab/module/model/mpk/common/utils/DllUtils.java b/iailab-module-model/iailab-module-model-biz/src/main/java/com/iailab/module/model/mpk/common/utils/DllUtils.java
new file mode 100644
index 0000000..d4831ad
--- /dev/null
+++ b/iailab-module-model/iailab-module-model-biz/src/main/java/com/iailab/module/model/mpk/common/utils/DllUtils.java
@@ -0,0 +1,128 @@
+package com.iailab.module.model.mpk.common.utils;
+
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
+import sun.misc.URLClassPath;
+
+import java.io.File;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.Iterator;
+import java.util.Vector;
+
+@Slf4j
+public class DllUtils {
+
+ /**
+ * @description: 加载dll到指定class下
+ * @author: dzd
+ * @date: 2024/9/30 14:27
+ **/
+ public static void loadDll(Class<?> clazz, String dllPath) {
+ try {
+ Method method = Runtime.class.getDeclaredMethod("load0", Class.class,String.class);
+ boolean accessible = method.isAccessible();
+ method.setAccessible(true);
+ method.invoke(Runtime.getRuntime(), clazz,dllPath);
+ method.setAccessible(accessible);
+ log.info("成功加载dll:"+ dllPath);
+ } catch (Exception e) {
+ throw new RuntimeException("加载dll异常",e);
+ }
+ }
+
+ /**
+ * @description: 卸载classLoader下全部dll
+ * @author: dzd
+ * @date: 2024/9/30 14:31
+ **/
+ public static synchronized void uploadDll(URLClassLoader classLoader) {
+ try {
+ Field field = ClassLoader.class.getDeclaredField("nativeLibraries");
+ field.setAccessible(true);
+ Vector<Object> libs = (Vector<Object>) field.get(classLoader);
+ Iterator<Object> it = libs.iterator();
+ Object o;
+ while (it.hasNext()) {
+ o = it.next();
+ Method method = o.getClass().getDeclaredMethod("finalize");
+ boolean accessible = method.isAccessible();
+ method.setAccessible(true);
+ method.invoke(o);
+ method.setAccessible(accessible);
+
+ Field nameDield = o.getClass().getDeclaredField("name");
+ nameDield.setAccessible(true);
+ String name = (String) nameDield.get(o);
+
+ log.info("成功卸载dll:" + name);
+ }
+ } catch (Exception e) {
+ throw new RuntimeException("卸载dll异常",e);
+ }
+ }
+
+ /**
+ * @description: 从classLoader中卸载dll，如果dllName传null，则默认删除全部dll
+ * @author: dzd
+ * @date: 2024/9/30 14:52
+ **/
+ public static synchronized void uploadDllName(URLClassLoader classLoader,String dllName) {
+ try {
+ Field field = ClassLoader.class.getDeclaredField("nativeLibraries");
+ field.setAccessible(true);
+ Vector<Object> libs = (Vector<Object>) field.get(classLoader);
+ Iterator<Object> it = libs.iterator();
+ Object o;
+ while (it.hasNext()) {
+ o = it.next();
+ Field nameDield = o.getClass().getDeclaredField("name");
+ nameDield.setAccessible(true);
+ String name = (String) nameDield.get(o);
+ // dllName不为null 并且 不等于name，跳出（dllName为null默认全部删除）
+ if (StringUtils.isNotEmpty(dllName) && !dllName.equals(name)) {
+ return;
+ }
+ Method method = o.getClass().getDeclaredMethod("finalize");
+ boolean accessible = method.isAccessible();
+ method.setAccessible(true);
+ method.invoke(o);
+ method.setAccessible(accessible);
+ log.info("成功卸载dll:" + name);
+ }
+ } catch (Exception e) {
+ throw new RuntimeException("卸载dll异常",e);
+ }
+ }
+
+ /**
+ * @description: 加载jar到特定的URLClassLoader，并返回URLClassLoader
+ * @author: dzd
+ * @date: 2024/9/30 14:20
+ **/
+ public static synchronized URLClassLoader loadJar(String jarPath) {
+ File jarFile = new File(jarPath);
+ if (!jarFile.exists()) {
+ throw new RuntimeException("jar沒有找到！");
+ } else {
+ try {
+ URLClassLoader urlClassLoader = new URLClassLoader(new URL[]{jarFile.toURI().toURL()});
+ log.info("成功加载jar包:"+ jarFile.getAbsolutePath());
+ return urlClassLoader;
+ } catch (Exception e) {
+ throw new RuntimeException("加载jar异常",e);
+ }
+ }
+ }
+
+ public static synchronized void uploadJar(URLClassLoader urlClassLoader) {
+ try {
+ urlClassLoader.close();
+ log.info("成功卸载jar包。");
+ } catch (Exception e) {
+ throw new RuntimeException("卸载jar异常",e);
+ }
+ }
+}
--
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