From a8f2f4e6f1a9173d7eb9779c7879674015c8cda0 Mon Sep 17 00:00:00 2001
From: dengzedong <dengzedong@email>
Date: 星期四, 10 十月 2024 14:07:31 +0800
Subject: [PATCH] 项目启动加载已发布的dll和jar 先判断文件是否存在
---
iailab-module-model/iailab-module-model-biz/src/main/java/com/iailab/module/model/mpk/common/utils/DllUtils.java | 112 ++++++++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 97 insertions(+), 15 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
index d4831ad..61cb7a8 100644
--- 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
@@ -1,19 +1,23 @@
package com.iailab.module.model.mpk.common.utils;
+import cn.hutool.core.io.FileUtil;
+import com.iailab.module.model.mpk.common.MdkConstant;
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.HashMap;
import java.util.Iterator;
import java.util.Vector;
@Slf4j
public class DllUtils {
+
+ private static HashMap<String, URLClassLoader> classLoaderCache = new HashMap<>();
/**
* @description: 加载dll到指定class下
@@ -22,14 +26,14 @@
**/
public static void loadDll(Class<?> clazz, String dllPath) {
try {
- Method method = Runtime.class.getDeclaredMethod("load0", Class.class,String.class);
+ Method method = Runtime.class.getDeclaredMethod("load0", Class.class, String.class);
boolean accessible = method.isAccessible();
method.setAccessible(true);
- method.invoke(Runtime.getRuntime(), clazz,dllPath);
+ method.invoke(Runtime.getRuntime(), clazz, dllPath);
method.setAccessible(accessible);
- log.info("成功加载dll:"+ dllPath);
+ log.info("成功加载dll:" + dllPath);
} catch (Exception e) {
- throw new RuntimeException("加载dll异常",e);
+ throw new RuntimeException("加载dll异常", e);
}
}
@@ -38,7 +42,7 @@
* @author: dzd
* @date: 2024/9/30 14:31
**/
- public static synchronized void uploadDll(URLClassLoader classLoader) {
+ public static synchronized void unloadDll(URLClassLoader classLoader) {
try {
Field field = ClassLoader.class.getDeclaredField("nativeLibraries");
field.setAccessible(true);
@@ -60,7 +64,7 @@
log.info("成功卸载dll:" + name);
}
} catch (Exception e) {
- throw new RuntimeException("卸载dll异常",e);
+ throw new RuntimeException("卸载dll异常", e);
}
}
@@ -69,7 +73,7 @@
* @author: dzd
* @date: 2024/9/30 14:52
**/
- public static synchronized void uploadDllName(URLClassLoader classLoader,String dllName) {
+ public static synchronized void unloadDllName(URLClassLoader classLoader, String dllName) {
try {
Field field = ClassLoader.class.getDeclaredField("nativeLibraries");
field.setAccessible(true);
@@ -93,7 +97,7 @@
log.info("成功卸载dll:" + name);
}
} catch (Exception e) {
- throw new RuntimeException("卸载dll异常",e);
+ throw new RuntimeException("卸载dll异常", e);
}
}
@@ -105,24 +109,102 @@
public static synchronized URLClassLoader loadJar(String jarPath) {
File jarFile = new File(jarPath);
if (!jarFile.exists()) {
- throw new RuntimeException("jar沒有找到！");
+ throw new RuntimeException("jar沒有找到！"+jarPath);
} else {
try {
- URLClassLoader urlClassLoader = new URLClassLoader(new URL[]{jarFile.toURI().toURL()});
- log.info("成功加载jar包:"+ jarFile.getAbsolutePath());
+ // 设置classloader的patent为null，限制使用双亲委派，防止其他classloader找到class，导致dll加载到其他classloader
+ URLClassLoader urlClassLoader = new URLClassLoader(new URL[]{jarFile.toURI().toURL()},null,null);
+ log.info("成功加载jar包:" + jarFile.getAbsolutePath());
return urlClassLoader;
} catch (Exception e) {
- throw new RuntimeException("加载jar异常",e);
+ throw new RuntimeException("加载jar异常", e);
}
}
}
- public static synchronized void uploadJar(URLClassLoader urlClassLoader) {
+ public static synchronized void unloadJar(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);
+ throw new RuntimeException("卸载jar异常", e);
}
}
+
+ public static synchronized void addClassLoaderCache(String projectId, URLClassLoader urlClassLoader) {
+ classLoaderCache.put(projectId, urlClassLoader);
+ }
+
+ public static synchronized URLClassLoader getClassLoader(String projectId) {
+ return classLoaderCache.get(projectId);
+ }
+
+ public static synchronized void removeClassLoaderCache(String projectId) {
+ if (classLoaderCache.containsKey(projectId)) {
+ URLClassLoader urlClassLoader = classLoaderCache.get(projectId);
+ unloadDll(urlClassLoader);
+ unloadJar(urlClassLoader);
+ classLoaderCache.remove(projectId);
+ }
+ }
+
+ public static void removeOldFile(String bakPath,String projectId) {
+ File dir = new File(bakPath);
+ if (dir.exists() && dir.isDirectory()) {
+ File[] files = dir.listFiles();
+ if (null != files && files.length > 0) {
+ for (File file : files) {
+ if (file.getName().startsWith(projectId)) {
+ file.delete();
+ }
+ }
+ }
+ }
+ }
+
+ /**
+ * @description: 项目启动加载已发布的dll和jar
+ * @author: dzd
+ * @date: 2024/10/10 11:58
+ **/
+ public static void loadProjectPublish(String bakPath) {
+ File dir = new File(bakPath);
+ if (dir.exists() && dir.isDirectory()) {
+ File[] files = dir.listFiles();
+ if (null != files && files.length > 0) {
+ for (File file : files) {
+ String fileName = file.getName();
+ if (fileName.endsWith(".jar")) {
+ String[] split = fileName.substring(0,fileName.length() - 4).split(MdkConstant.SPLIT);
+ String projectId = split[0];
+ String historyId = split[1];
+
+ String jarFilePath = bakPath + File.separator + projectId + MdkConstant.SPLIT + historyId + ".jar";
+ String dllFilePath = bakPath + File.separator + projectId + MdkConstant.SPLIT + historyId + ".dll";
+
+ if (FileUtil.exist(jarFilePath) && FileUtil.exist(dllFilePath)) {
+ URLClassLoader urlClassLoader = null;
+ try {
+ // 加载新的jar
+ urlClassLoader = loadJar(jarFilePath);
+ } catch (Exception e) {
+ throw new RuntimeException("加载jar异常",e);
+ }
+
+ try {
+ // 加载新的dll
+ loadDll(urlClassLoader.loadClass("iail.mdk.model.common.Environment"),dllFilePath);
+ } catch (Exception e) {
+ unloadJar(urlClassLoader);
+ throw new RuntimeException("加载dll异常",e);
+ }
+ // 都加载成功后加入缓存
+ addClassLoaderCache(projectId,urlClassLoader);
+ }
+ }
+ }
+ }
+ }
+
+ }
}
--
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