package com.vincent.rsf.framework.common;
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import com.vincent.rsf.framework.annotations.CoolTranslate;
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import java.lang.reflect.*;
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import java.nio.charset.StandardCharsets;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.util.*;
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/**
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* Created by vincent on 2019-06-09
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*/
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public class Cools {
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public static boolean isEmpty(Object... objects) {
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for (Object obj : objects){
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if (isEmpty(obj)){
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return true;
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}
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}
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return false;
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}
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@SuppressWarnings("rawtypes")
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public static boolean isEmpty(Object o) {
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if (o == null) {
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return true;
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}
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if (o instanceof String) {
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if (o.toString().trim().equals("")) {
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return true;
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}
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} else if (o instanceof List) {
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if (((List) o).size() == 0) {
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return true;
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}
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} else if (o instanceof Map) {
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if (((Map) o).size() == 0) {
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return true;
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}
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} else if (o instanceof Set) {
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if (((Set) o).size() == 0) {
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return true;
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}
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} else if (o instanceof Object[]) {
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if (((Object[]) o).length == 0) {
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return true;
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}
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} else if (o instanceof int[]) {
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if (((int[]) o).length == 0) {
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return true;
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}
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} else if (o instanceof long[]) {
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if (((long[]) o).length == 0) {
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return true;
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}
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}
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return false;
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}
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public static int sqlLimitIndex(Integer pageIndex, Integer pageSize){
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return (pageIndex - 1) * pageSize;
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}
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public static String enToken(String username, String password){
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return AesUtils.encrypt(username, zerofill(password, 16));
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}
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public static String deTokn(String token, String password){
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return AesUtils.decrypt(token, zerofill(password, 16));
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}
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public static String zerofill(String msg, Integer count){
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if (msg.length() == count){
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return msg;
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} else if (msg.length() > count){
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return msg.substring(0, 16);
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} else {
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StringBuilder msgBuilder = new StringBuilder(msg);
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for (int i = 0; i<count-msg.length(); i++){
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msgBuilder.append("0");
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}
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return msgBuilder.toString();
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}
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}
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/**
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* 截取字符串(默认end=true)
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* @param str 被截字符串
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* @param end true:最后一个字符 / false:第一个字符
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*/
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public static String deleteChar(String str, boolean end){
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if (isEmpty(str)){
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return "";
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}
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if (end){
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return str.substring(0, str.length()-1);
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} else {
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return str.substring(1);
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}
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}
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public static String deleteChar(String str){
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return deleteChar(str, true);
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}
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/**
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* map 转 对象
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*/
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public static <T> T conver(Map<? extends String, ?> map, Class<T> cls){
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T instance = null;
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try {
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Constructor<T> constructor = cls.getDeclaredConstructor();
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boolean constructorAccessible = constructor.isAccessible();
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constructor.setAccessible(true);
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instance = constructor.newInstance();
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constructor.setAccessible(constructorAccessible);
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} catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e) {
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e.printStackTrace();
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}
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Class<?> prototype = cls;
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do {
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for (Field field : prototype.getDeclaredFields()){
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if (Modifier.isFinal(field.getModifiers())
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|| Modifier.isStatic(field.getModifiers())
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|| Modifier.isTransient(field.getModifiers())){
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continue;
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}
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String fieldName = field.getName();
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Object val = null;
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if (map.containsKey(fieldName)){
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val = map.get(fieldName);
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}
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if (val != null){
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boolean fieldAccessible = field.isAccessible();
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field.setAccessible(true);
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Class<?> type = field.getType();
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try {
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Constructor<?> constructor = type.getDeclaredConstructor(String.class);
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boolean constructorAccessible = constructor.isAccessible();
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constructor.setAccessible(true);
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field.set(instance, constructor.newInstance(String.valueOf(val)));
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constructor.setAccessible(constructorAccessible);
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} catch (IllegalAccessException
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| InstantiationException
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| InvocationTargetException
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| NoSuchMethodException e) {
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System.err.println("convert error ===> Class["+prototype+"],Field:["+fieldName+"],Type:["+type+"],Value:["+val+"]");
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}
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field.setAccessible(fieldAccessible);
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}
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}
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prototype = prototype.getSuperclass();
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} while (!Object.class.equals(prototype));
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return instance;
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}
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/**
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* 对象 转 map
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*/
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public static Map<String, Object> conver(Object obj){
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Class<?> cls = obj.getClass();
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Field[] fields = getAllFields(cls);
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Map<String, Object> map = new HashMap<>();
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for (Field field : fields) {
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if (Modifier.isFinal(field.getModifiers())
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|| Modifier.isStatic(field.getModifiers())
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|| Modifier.isTransient(field.getModifiers())){
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continue;
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}
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String key = field.getName();
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boolean flag = field.isAccessible();
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field.setAccessible(true);
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Object val = null;
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try {
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val = field.get(obj);
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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}
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field.setAccessible(flag);
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if (val != null){
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map.put(key, val);
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}
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}
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return map;
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}
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/**
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* 获取指定Class（及其SuperClass）的成员变量
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*/
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public static Field[] getAllFields(Class<?> cls){
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return getAllFields(cls, null);
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}
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/**
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* 递归合并基类Field
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*/
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private static Field[] getAllFields(Class<?> cls, Field[] params){
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Field[] fields = (params == null) ? cls.getDeclaredFields() : params;
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Class<?> superCls = cls.getSuperclass();
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if (superCls == null || superCls == Object.class){
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return fields;
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}
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Field[] superClsFields = superCls.getDeclaredFields();
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fields = addAll(fields, superClsFields);
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return getAllFields(superCls, fields);
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}
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/**
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* 根据fieldName获取Field对象
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*/
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public static Field getField(Class<?> cls, String fieldName) {
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Field[] allFields = getAllFields(cls);
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for (Field field : allFields) {
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if (field.getName().equals(fieldName)) {
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return field;
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}
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}
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return null;
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}
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/**
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* 获取对象中某个Field的值
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*/
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public static Object getFieldValue(Object obj, Field field) {
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if (null == field) {
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return null;
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} else {
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if (obj instanceof Class) {
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obj = null;
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}
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if (!field.isAccessible()) {
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field.setAccessible(true);
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}
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try {
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return field.get(obj);
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} catch (IllegalAccessException e) {
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throw new RuntimeException(e);
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}
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}
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}
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/**
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* 数组叠加
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*/
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@SuppressWarnings("unchecked")
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public static <T> T[] addAll(T[] array1, T... array2) {
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if (array1 == null) {
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return clone(array2);
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} else if (array2 == null) {
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return clone(array1);
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} else {
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Class<?> cls = array1.getClass().getComponentType();
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T[] joinedArray = (T[]) Array.newInstance(cls, array1.length + array2.length);
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System.arraycopy(array1, 0, joinedArray, 0, array1.length);
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try {
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System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
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return joinedArray;
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} catch (ArrayStoreException e) {
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Class<?> type2 = array2.getClass().getComponentType();
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if (!cls.isAssignableFrom(type2)) {
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throw new RuntimeException("Cannot store " + type2.getName() + " in an array of " + cls.getName(), e);
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} else {
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throw e;
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}
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}
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}
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}
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/**
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* 克隆
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*/
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private static <T> T[] clone(T[] array) {
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return array == null ? null : array.clone();
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}
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/**
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* map操作
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*/
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public static CoolMap add(String key,Object value){
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CoolMap map = new CoolMap();
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map.put(key, value);
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return map;
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}
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public static class CoolMap extends HashMap<String, Object>{
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public CoolMap add(String key,Object value){
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this.put(key, value);
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return this;
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}
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public CoolMap $(String key,Object value){
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this.put(key, value);
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return this;
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}
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}
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private final static char[] hexDigits = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
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public static String md5(String string){
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try{
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MessageDigest md5 = MessageDigest.getInstance("MD5");
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byte[] bytes = md5.digest(string.getBytes(StandardCharsets.UTF_8));
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char[] chars = new char[bytes.length * 2];
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for (int i = 0; i < bytes.length; i++) {
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int b = bytes[i];
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chars[i * 2] = hexDigits[(b & 0xF0) >> 4];
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chars[i * 2 + 1] = hexDigits[b & 0x0F];
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}
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return new String(chars).toLowerCase();
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} catch (Exception e) {
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e.printStackTrace();
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throw new RuntimeException("md5加密失败,str=".concat(string));
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}
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}
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public static Map<String, Object> translate(Object obj){
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Class<?> cls = obj.getClass();
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Field[] fields = getAllFields(cls);
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Map<String, Object> map = new HashMap<>();
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for (Field field : fields) {
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String key = field.getName();
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if (field.isAnnotationPresent(CoolTranslate.class)){
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CoolTranslate annotation = field.getAnnotation(CoolTranslate.class);
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if (!isEmpty(annotation.value())) {
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key = annotation.value();
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}
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}
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boolean flag = field.isAccessible();
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field.setAccessible(true);
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Object val = null;
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try {
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val = field.get(obj);
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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}
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field.setAccessible(flag);
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if (val != null){
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map.put(key, val);
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}
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}
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return map;
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}
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public static boolean eq(String str, String str0) {
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if (Cools.isEmpty(str) && Cools.isEmpty(str0)) {
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return true;
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}
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if (Cools.isEmpty(str) && !Cools.isEmpty(str0)) {
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return false;
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}
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if (Cools.isEmpty(str0) && !Cools.isEmpty(str)) {
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return false;
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}
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if (str.equals(str0)) {
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return true;
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}
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return false;
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}
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public static List<String> getIntersection(List<String> list1, List<String> list2) {
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if (isEmpty(list1) || isEmpty(list2)) {
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return new ArrayList<>();
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}
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List<String> intersection = new ArrayList<>(list1);
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intersection.retainAll(list2);
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return intersection;
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}
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/**
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* 对汉字字符串进行MD5加密
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* @param input 要加密的汉字字符串
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* @return 32位小写MD5哈希值
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* @throws NoSuchAlgorithmException
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*/
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public static String md5Chinese(String input) throws NoSuchAlgorithmException {
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if (input == null) {
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return null;
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}
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// 统一使用UTF-8编码
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byte[] inputBytes = input.getBytes(StandardCharsets.UTF_8);
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MessageDigest md = MessageDigest.getInstance("MD5");
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byte[] digest = md.digest(inputBytes);
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// 将字节数组转换为16进制字符串
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StringBuilder sb = new StringBuilder();
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for (byte b : digest) {
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sb.append(String.format("%02x", b));
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}
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return sb.toString();
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}
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/**
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* 验证汉字字符串与MD5哈希是否匹配
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* @param input 要验证的汉字字符串
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* @param md5Hash 存储的MD5哈希值
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* @return 如果匹配返回true，否则false
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*/
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public static boolean verifyChinese(String input, String md5Hash) {
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try {
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String computedHash = md5Chinese(input);
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return computedHash.equals(md5Hash.toLowerCase());
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} catch (NoSuchAlgorithmException e) {
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// 理论上不会发生，因为MD5是Java标准库支持的
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return false;
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}
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}
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}
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