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【v3.8.3】优化枚举字典数据加载，支持多包路径扫描，提升初始化性能

pull/8786/merge
JEECG 2025-09-14 11:54:01 +08:00
parent d7dc81455d
commit 152e8c7aaa
1 changed files with 133 additions and 72 deletions
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199
jeecg-boot/jeecg-boot-base-core/src/main/java/org/jeecg/common/system/util/ResourceUtil.java
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@ -13,31 +13,33 @@ import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
import org.springframework.core.type.classreading.MetadataReader; import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory; import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.util.ClassUtils; import org.springframework.util.ClassUtils;
import java.lang.reflect.Method;
import java.util.ArrayList; import java.util.*;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/** /**
* 资源加载工具类 * 枚举字典数据 资源加载工具类
*
* @Author taoYan * @Author taoYan
* @Date 2022/7/8 10:40 * @Date 2022/7/8 10:40
**/ **/
@Slf4j @Slf4j
public class ResourceUtil { public class ResourceUtil {
/**
* 多个包扫描根路径
*
* 之所以让用户手工配置扫描路径，是为了避免不必要的类加载开销，提升启动性能。
* 请务必将所有枚举类所在包路径添加到此配置中。
*/
private final static String[] BASE_SCAN_PACKAGES = {
"org.jeecg.common.constant.enums",
"org.jeecg.modules.message.enums"
};
/** /**
* 枚举字典数据 * 枚举字典数据
*/ */
private final static Map<String, List<DictModel>> enumDictData = new HashMap<>(5); private final static Map<String, List<DictModel>> enumDictData = new HashMap<>(5);
/**
* 所有java类
*/
private final static String CLASS_PATTERN="/**/*.class";
/** /**
* 所有枚举java类 * 所有枚举java类
*/ */
@ -45,9 +47,9 @@ public class ResourceUtil {
private final static String CLASS_ENUM_PATTERN="/**/*Enum.class"; private final static String CLASS_ENUM_PATTERN="/**/*Enum.class";
/** /**
* 包路径 org.jeecg * 初始化状态标识
*/ */
private final static String BASE_PACKAGE = "org.jeecg"; private static volatile boolean initialized = false;
/** /**
* 枚举类中获取字典数据的方法名 * 枚举类中获取字典数据的方法名
@ -55,59 +57,135 @@ public class ResourceUtil {
private final static String METHOD_NAME = "getDictList"; private final static String METHOD_NAME = "getDictList";
/** /**
* 获取枚举字典数据
* 获取枚举类对应的字典数据 SysDictServiceImpl#queryAllDictItems() * 获取枚举类对应的字典数据 SysDictServiceImpl#queryAllDictItems()
* @return *
* @return 枚举字典数据
*/ */
public static Map<String, List<DictModel>> getEnumDictData(){ public static Map<String, List<DictModel>> getEnumDictData() {
if(enumDictData.keySet().size()>0){ if (!initialized) {
return enumDictData; synchronized (ResourceUtil.class) {
} if (!initialized) {
ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver(); long startTime = System.currentTimeMillis();
String pattern = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(BASE_PACKAGE) + CLASS_ENUM_PATTERN; log.info("【枚举字典加载】开始初始化枚举字典数据...");
try {
Resource[] resources = resourcePatternResolver.getResources(pattern); initEnumDictData();
MetadataReaderFactory readerFactory = new CachingMetadataReaderFactory(resourcePatternResolver); initialized = true;
for (Resource resource : resources) {
MetadataReader reader = readerFactory.getMetadataReader(resource); long endTime = System.currentTimeMillis();
String classname = reader.getClassMetadata().getClassName(); log.info("【枚举字典加载】枚举字典数据初始化完成，共加载 {} 个字典，总耗时: {}ms", enumDictData.size(), endTime - startTime);
Class<?> clazz = Class.forName(classname);
EnumDict enumDict = clazz.getAnnotation(EnumDict.class);
if (enumDict != null) {
EnumDict annotation = clazz.getAnnotation(EnumDict.class);
String key = annotation.value();
if(oConvertUtils.isNotEmpty(key)){
List<DictModel> list = (List<DictModel>) clazz.getDeclaredMethod(METHOD_NAME).invoke(null);
enumDictData.put(key, list);
}
} }
} }
}catch (Exception e){
log.error("获取枚举类字典数据异常", e.getMessage());
// e.printStackTrace();
} }
return enumDictData; return enumDictData;
} }
/** /**
* 用于后端字典翻译 SysDictServiceImpl#queryManyDictByKeys(java.util.List, java.util.List) * 使用多包路径扫描方式初始化枚举字典数据
* @param dictCodeList
* @param keys
* @return
*/ */
public static Map<String, List<DictModel>> queryManyDictByKeys(List<String> dictCodeList, List<String> keys){ private static void initEnumDictData() {
if(enumDictData.keySet().size()==0){ ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();
getEnumDictData();
long scanStartTime = System.currentTimeMillis();
List<Resource> allResources = new ArrayList<>();
// 扫描多个包路径
for (String basePackage : BASE_SCAN_PACKAGES) {
String pattern = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(basePackage) + CLASS_ENUM_PATTERN;
try {
Resource[] resources = resourcePatternResolver.getResources(pattern);
allResources.addAll(Arrays.asList(resources));
log.debug("【枚举字典加载】扫描包 {} 找到 {} 个枚举类文件", basePackage, resources.length);
} catch (Exception e) {
log.warn("【枚举字典加载】扫描包 {} 时出现异常: {}", basePackage, e.getMessage());
}
} }
long scanEndTime = System.currentTimeMillis();
log.info("【枚举字典加载】文件扫描完成，总共找到 {} 个枚举类文件，扫描耗时: {}ms", allResources.size(), scanEndTime - scanStartTime);
MetadataReaderFactory readerFactory = new CachingMetadataReaderFactory(resourcePatternResolver);
long processStartTime = System.currentTimeMillis();
int processedCount = 0;
for (Resource resource : allResources) {
try {
MetadataReader reader = readerFactory.getMetadataReader(resource);
String classname = reader.getClassMetadata().getClassName();
// 提前检查是否有@EnumDict注解，避免不必要的Class.forName
if (hasEnumDictAnnotation(reader)) {
processEnumClass(classname);
processedCount++;
}
} catch (Exception e) {
log.debug("处理资源异常: {} - {}", resource.getFilename(), e.getMessage());
}
}
long processEndTime = System.currentTimeMillis();
log.info("【枚举字典加载】处理完成，实际处理 {} 个带注解的枚举类，处理耗时: {}ms", processedCount, processEndTime - processStartTime);
}
/**
* 检查类是否有EnumDict注解（通过元数据，避免类加载）
*/
private static boolean hasEnumDictAnnotation(MetadataReader reader) {
try {
return reader.getAnnotationMetadata().hasAnnotation(EnumDict.class.getName());
} catch (Exception e) {
return false;
}
}
/**
* 处理单个枚举类
*/
private static void processEnumClass(String classname) {
try {
Class<?> clazz = Class.forName(classname);
EnumDict enumDict = clazz.getAnnotation(EnumDict.class);
if (enumDict != null) {
String key = enumDict.value();
if (oConvertUtils.isNotEmpty(key)) {
Method method = clazz.getDeclaredMethod(METHOD_NAME);
List<DictModel> list = (List<DictModel>) method.invoke(null);
enumDictData.put(key, list);
log.debug("成功加载枚举字典: {} -> {}", key, classname);
}
}
} catch (Exception e) {
log.debug("处理枚举类异常: {} - {}", classname, e.getMessage());
}
}
/**
* 用于后端字典翻译 SysDictServiceImpl#queryManyDictByKeys(java.util.List, java.util.List)
*
* @param dictCodeList 字典编码列表
* @param keys 键值列表
* @return 字典数据映射
*/
public static Map<String, List<DictModel>> queryManyDictByKeys(List<String> dictCodeList, List<String> keys) {
Map<String, List<DictModel>> enumDict = getEnumDictData();
Map<String, List<DictModel>> map = new HashMap<>(); Map<String, List<DictModel>> map = new HashMap<>();
for (String code : enumDictData.keySet()) {
if(dictCodeList.indexOf(code)>=0){ // 使用更高效的查找方式
List<DictModel> dictItemList = enumDictData.get(code); Set<String> dictCodeSet = new HashSet<>(dictCodeList);
for(DictModel dm: dictItemList){ Set<String> keySet = new HashSet<>(keys);
for (String code : enumDict.keySet()) {
if (dictCodeSet.contains(code)) {
List<DictModel> dictItemList = enumDict.get(code);
for (DictModel dm : dictItemList) {
String value = dm.getValue(); String value = dm.getValue();
if(keys.indexOf(value)>=0){ if (keySet.contains(value)) {
List<DictModel> list = new ArrayList<>(); List<DictModel> list = new ArrayList<>();
list.add(new DictModel(value, dm.getText())); list.add(new DictModel(value, dm.getText()));
map.put(code,list); map.put(code, list);
break; break;
} }
} }
@ -116,21 +194,4 @@ public class ResourceUtil {
return map; return map;
} }
/**
* 获取实现类
*
* @param classPath
*/
public static Object getImplementationClass(String classPath){
try {
Class<?> aClass = Class.forName(classPath);
return SpringContextUtils.getBean(aClass);
} catch (ClassNotFoundException e) {
log.error("类没有找到",e);
return null;
} catch (NoSuchBeanDefinitionException e){
log.error(classPath + "没有实现",e);
return null;
}
}
} }