259 lines
9.8 KiB
Java
259 lines
9.8 KiB
Java
|
package business.cooperop.common.utils;
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
**********************************************
|
|||
|
|
* DATE PERSON REASON
|
|||
|
|
* 2020/9/4 FXY Created
|
|||
|
|
**********************************************
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
|
|||
|
|
import com.esotericsoftware.reflectasm.MethodAccess;
|
|||
|
|
|
|||
|
|
import java.lang.reflect.Field;
|
|||
|
|
import java.lang.reflect.Modifier;
|
|||
|
|
import java.util.*;
|
|||
|
|
import java.util.function.Function;
|
|||
|
|
import java.util.stream.Collectors;
|
|||
|
|
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 待重写
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
public class BeanUtilsV2 {
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 通过 ASM反射 速度比 Spring BeanUtils.copyProperties(source,target) 快一倍
|
|||
|
|
* 类型不同可以转换
|
|||
|
|
* 大小写可以忽略
|
|||
|
|
* 下划线 _ 被忽略
|
|||
|
|
* fxy备注：需要操纵字节码，服务器没有性能瓶颈的情况下慎用！
|
|||
|
|
*
|
|||
|
|
* @param source 数据源
|
|||
|
|
* @param target 目标是数据
|
|||
|
|
* @param <T>
|
|||
|
|
* @return
|
|||
|
|
*/
|
|||
|
|
public static <T> T copyPropertiesASM(Object source, Object target) {
|
|||
|
|
MethodAccess sourceMethodAccess = CacheMethodAccess.getMethodAccess(source.getClass());
|
|||
|
|
MethodAccess targetMethodAccess = CacheMethodAccess.getMethodAccess(target.getClass());
|
|||
|
|
Map<String, String> sourceGet = CacheAsmFiledMethod.getMethod("get", source.getClass());
|
|||
|
|
Map<String, String> targetSet = CacheAsmFiledMethod.getMethod("set", target.getClass());
|
|||
|
|
CacheFieldMap.getFieldMap(target.getClass()).keySet().forEach((it) -> {
|
|||
|
|
String sourceIndex = sourceGet.get(it);
|
|||
|
|
if (sourceIndex != null) {
|
|||
|
|
Object value = sourceMethodAccess.invoke(source, sourceIndex);
|
|||
|
|
String setIndex = targetSet.get(it);
|
|||
|
|
targetMethodAccess.invoke(target, setIndex, value);
|
|||
|
|
}
|
|||
|
|
});
|
|||
|
|
return (T) target;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 模仿Spring中 BeanUtils.copyProperties(source,target)
|
|||
|
|
* 目前仅支持整形到布尔类型的单向转换
|
|||
|
|
* 但是
|
|||
|
|
* 大小写可以忽略
|
|||
|
|
* 下划线 _ 被忽略
|
|||
|
|
*
|
|||
|
|
* @param source
|
|||
|
|
* @param target
|
|||
|
|
* @param <T>
|
|||
|
|
* @return
|
|||
|
|
*/
|
|||
|
|
public static <T> T copyProperties(Object source, Object target) {
|
|||
|
|
Map<String, Field> sourceMap = CacheFieldMap.getFieldMap(source.getClass());
|
|||
|
|
CacheFieldMap.getFieldMap(target.getClass()).values().forEach((it) -> {
|
|||
|
|
Field field = sourceMap.get(it.getName().toLowerCase().replace("_", ""));
|
|||
|
|
if (field != null) {
|
|||
|
|
it.setAccessible(true);
|
|||
|
|
field.setAccessible(true);
|
|||
|
|
try {
|
|||
|
|
if (field.getType() == Integer.class && it.getType() == Boolean.class) {
|
|||
|
|
it.set(target, (Integer) field.get(source) == 1 ? true : false);
|
|||
|
|
} else {
|
|||
|
|
it.set(target, field.get(source));
|
|||
|
|
}
|
|||
|
|
} catch (IllegalAccessException e) {
|
|||
|
|
e.printStackTrace();
|
|||
|
|
} finally {
|
|||
|
|
|
|||
|
|
//及时关闭访问权限
|
|||
|
|
field.setAccessible(false);
|
|||
|
|
it.setAccessible(false);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
});
|
|||
|
|
return (T) target;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @param source 源对象
|
|||
|
|
* @param target 目标对象
|
|||
|
|
* @param ignores 需要忽略的字段数组元素
|
|||
|
|
* @param <T> 返回赋了值的目标对象
|
|||
|
|
* 目前不同类型之间的转换，仅支持整形向布尔类型的单向转换
|
|||
|
|
* @return
|
|||
|
|
*/
|
|||
|
|
public static <T> T copyProperties(Object source, Object target, String... ignores) {
|
|||
|
|
Map<String, Field> sourceMap = CacheFieldMap.getFieldMap(source.getClass(), ignores);
|
|||
|
|
CacheFieldMap.getFieldMap(target.getClass()).values().forEach((it) -> {
|
|||
|
|
Field field = sourceMap.get(it.getName().toLowerCase().replace("_", ""));
|
|||
|
|
if (field != null) {
|
|||
|
|
it.setAccessible(true);
|
|||
|
|
field.setAccessible(true);
|
|||
|
|
try {
|
|||
|
|
if (field.getType() == Integer.class && it.getType() == Boolean.class) {
|
|||
|
|
it.set(target, (Integer) field.get(source) == 1 ? true : false);
|
|||
|
|
} else {
|
|||
|
|
it.set(target, field.get(source));
|
|||
|
|
}
|
|||
|
|
} catch (IllegalAccessException e) {
|
|||
|
|
e.printStackTrace();
|
|||
|
|
} finally {
|
|||
|
|
field.setAccessible(false);
|
|||
|
|
it.setAccessible(false);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
});
|
|||
|
|
return (T) target;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Asm方式缓存变量域到map中，待优化
|
|||
|
|
* 可以将加锁操作换做无阻塞的并发容器
|
|||
|
|
*/
|
|||
|
|
private static class CacheAsmFiledMethod {
|
|||
|
|
private static Map<String, Map<String, String>> cacheGetMethod = new HashMap<>();
|
|||
|
|
private static Map<String, Map<String, String>> cacheSetMethod = new HashMap<>();
|
|||
|
|
|
|||
|
|
private static Map<String, String> getMethod(String type, Class clazz) {
|
|||
|
|
MethodAccess methodAccess = CacheMethodAccess.getMethodAccess(clazz);
|
|||
|
|
Map<String, Field> allFields = CacheFieldMap.getFieldMap(clazz);
|
|||
|
|
Map<String, String> result = null;
|
|||
|
|
if (type.equals("get")) {
|
|||
|
|
result = cacheGetMethod.get(clazz.getName());
|
|||
|
|
} else if (type.equals("set")) {
|
|||
|
|
result = cacheSetMethod.get(clazz.getName());
|
|||
|
|
}
|
|||
|
|
if (result == null) {
|
|||
|
|
synchronized (CacheAsmFiledMethod.class) {
|
|||
|
|
if (result == null) {
|
|||
|
|
Map<String, String> set = new HashMap<>();
|
|||
|
|
Map<String, String> get = new HashMap<>();
|
|||
|
|
allFields.values().forEach((it) -> {
|
|||
|
|
//判断是否是静态
|
|||
|
|
if (!Modifier.isStatic(it.getModifiers())) {
|
|||
|
|
//首字母大写
|
|||
|
|
char[] f = it.getName().toCharArray();
|
|||
|
|
f[0] -= 32;
|
|||
|
|
String fieldName = new String(f);
|
|||
|
|
get.put(fieldName.toLowerCase().replace("_", ""), "get" + fieldName);
|
|||
|
|
set.put(fieldName.toLowerCase().replace("_", ""), "set" + fieldName);
|
|||
|
|
}
|
|||
|
|
});
|
|||
|
|
cacheGetMethod.put(clazz.getName(), get);
|
|||
|
|
cacheSetMethod.put(clazz.getName(), set);
|
|||
|
|
if (type.equals("get")) {
|
|||
|
|
result = cacheGetMethod.get(clazz.getName());
|
|||
|
|
} else if (type.equals("set")) {
|
|||
|
|
result = cacheSetMethod.get(clazz.getName());
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return result;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 缓存方法访问权限容器，加锁操作待优化
|
|||
|
|
*/
|
|||
|
|
private static class CacheMethodAccess {
|
|||
|
|
|
|||
|
|
private CacheMethodAccess() {
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private static Map<String, MethodAccess> cache = new HashMap<>();
|
|||
|
|
|
|||
|
|
private static MethodAccess getMethodAccess(Class clazz) {
|
|||
|
|
MethodAccess result = cache.get(clazz.getName());
|
|||
|
|
if (result == null) {
|
|||
|
|
synchronized (CacheMethodAccess.class) {
|
|||
|
|
if (result == null) {
|
|||
|
|
cache.put(clazz.getName(), MethodAccess.get(clazz));
|
|||
|
|
result = cache.get(clazz.getName());
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return result;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 缓存所有域到map中，加锁操作待优化
|
|||
|
|
*/
|
|||
|
|
private static class CacheFieldMap {
|
|||
|
|
private static Map<String, Map<String, Field>> cacheMap = new HashMap<>();
|
|||
|
|
|
|||
|
|
private static Map<String, Field> getFieldMap(Class clazz) {
|
|||
|
|
Map<String, Field> result = cacheMap.get(clazz.getName());
|
|||
|
|
if (result == null) {
|
|||
|
|
synchronized (CacheFieldMap.class) {
|
|||
|
|
if (result == null) {
|
|||
|
|
List<Field> allFields = getAllFields(clazz);
|
|||
|
|
Map<String, Field> fieldMap = allFields.stream().collect(Collectors.toMap(field -> field.getName().toLowerCase().replace("_", ""), Function.<Field>identity()));
|
|||
|
|
cacheMap.put(clazz.getName(), fieldMap);
|
|||
|
|
result = cacheMap.get(clazz.getName());
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return result;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 每次反射完成后将数据存放在内存中
|
|||
|
|
*
|
|||
|
|
* @param clazz
|
|||
|
|
* @param ignores
|
|||
|
|
* @return
|
|||
|
|
*/
|
|||
|
|
private static Map<String, Field> getFieldMap(Class clazz, String... ignores) {
|
|||
|
|
Map<String, Field> result = cacheMap.get(clazz.getName());
|
|||
|
|
List<String> list = Arrays.asList(ignores);
|
|||
|
|
if (result == null) {
|
|||
|
|
synchronized (CacheFieldMap.class) {
|
|||
|
|
if (result == null) {
|
|||
|
|
List<Field> allFields = getAllFields(clazz);
|
|||
|
|
Map<String, Field> fieldMap = allFields.stream().filter(a -> !(list.contains(a.getName()))).collect(Collectors.toMap(field -> field.getName().toLowerCase().replace("_", ""), Function.<Field>identity()));
|
|||
|
|
cacheMap.put(clazz.getName(), fieldMap);
|
|||
|
|
result = cacheMap.get(clazz.getName());
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return result;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 得到包括继承而来的所有域
|
|||
|
|
*
|
|||
|
|
* @param clazz
|
|||
|
|
* @return
|
|||
|
|
*/
|
|||
|
|
private static List<Field> getAllFields(Class clazz) {
|
|||
|
|
List<Field> fieldList = new ArrayList<>();
|
|||
|
|
while (clazz != null && !clazz.getName().toLowerCase().equals("java.lang.object")) {
|
|||
|
|
fieldList.addAll(Arrays.asList(clazz.getDeclaredFields()));
|
|||
|
|
clazz = clazz.getSuperclass();
|
|||
|
|
}
|
|||
|
|
return fieldList;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|