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ChenJiaHe

2022-01-23 7c10d91a91e86122706699a1ee73793b5bafaa06

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c64e12	1	package com.hx.mybatis.aes.springbean;
e29546	2
c64e12	3	import com.gitee.sunchenbin.mybatis.actable.annotation.Table;
e29546	4	import com.hx.common.annotations.MysqlHexAes;
C	5	import com.hx.util.StringUtils;
346eb2	6	import org.slf4j.Logger;
C	7	import org.slf4j.LoggerFactory;
e29546	8	import org.springframework.stereotype.Component;
C	9
	10	import javax.annotation.PostConstruct;
	11	import javax.annotation.Resource;
	12	import java.io.File;
	13	import java.io.FileFilter;
	14	import java.io.IOException;
	15	import java.lang.reflect.Field;
346eb2	16	import java.net.JarURLConnection;
e29546	17	import java.net.URL;
C	18	import java.net.URLDecoder;
	19	import java.util.*;
346eb2	20	import java.util.jar.JarEntry;
C	21	import java.util.jar.JarFile;
e29546	22
C	23	/**
	24	* 获取指定包里面的AES秘钥
	25	*/
	26	@Component
	27	public class VariableAesKey {
346eb2	28
C	29	//log4j日志
	30	private static Logger logger = LoggerFactory.getLogger(VariableAesKey.class.getName());
e29546	31
C	32	@Resource
	33	private ConstantBean constantBean;
	34
c64e12	35	/*是否已经启动完/
C	36	public static int isRun = 0;
	37
	38	/*存储所有AES的秘钥/
e29546	39	public static Map<String,String> aesKeys = new HashMap<>();
c64e12	40	/*根据表明来存储AES秘钥/
C	41	public static Map<String,Map<String,String>> aesKeysTable = new HashMap<>();
	42
	43	/*固定的aes秘钥/
	44	public static String AES_KEY = null;
e29546	45
C	46	/*存储AES秘钥/
	47	public static void setAesKey(String aesKeyFild,String aesKey){
	48	aesKeys.put(aesKeyFild,aesKey);
	49	}
	50	/*获取AES秘钥/
	51	public static String getAesKey(String aesKeyFild){
c64e12	52	if(aesKeyFild == null){
C	53	return AES_KEY;
	54	}
	55	if(StringUtils.isEmpty(aesKeys.get(aesKeyFild))){
	56	return AES_KEY;
	57	}else {
	58	return aesKeys.get(aesKeyFild);
	59	}
e29546	60	}
C	61
	62	/**
	63	* 项目启动就执行后就执行该方法
	64	*/
	65	@PostConstruct
	66	public void VariableAesKey(){
c64e12	67
C	68	isRun = 1;
e29546	69	//项目启动的时候填入
346eb2	70	logger.info("扫描获取AES的包:" + constantBean.getPackPath());
c64e12	71	AES_KEY = constantBean.getFixedAesKey();
af1eee	72	if(!StringUtils.isEmpty(constantBean.getPackPath())){
e29546	73	Set<Class<?>> classes = classData(constantBean.getPackPath());
346eb2	74	logger.info("扫描获取AES的包classes:" + classes.size());
c64e12	75	Map<String,String> aesKeysFild = new HashMap<>();
C	76	boolean isAes = false;
	77	String tableName = null;
	78
e29546	79	for(Class<?> cl:classes){
c64e12	80	//表名称
346eb2	81	boolean hasAnnotation = cl.isAnnotationPresent(Table.class);
C	82	if(!hasAnnotation){
c64e12	83	continue;
C	84	}
346eb2	85	Table table = cl.getAnnotation(Table.class);
c64e12	86	tableName = table.name();
C	87
	88	aesKeysFild = new HashMap<>();
	89	isAes = false;
	90
e29546	91	// 取得本类的全部属性
C	92	Field[] fields = cl.getDeclaredFields();
	93	fields = getPatentFields(fields,cl);
	94	for (Field field:fields) {
	95	// 判断方法中是否有指定注解类型的注解
346eb2	96	hasAnnotation = field.isAnnotationPresent(MysqlHexAes.class);
e29546	97	if (hasAnnotation) {
C	98	// 根据注解类型返回方法的指定类型注解
	99	MysqlHexAes mysqlHexAes = field.getAnnotation(MysqlHexAes.class);
	100
c64e12	101	//String aesKeyField = mysqlHexAes.aesKeyField();
e29546	102	String aesKey = mysqlHexAes.aesKey();
C	103
	104	if(StringUtils.isEmpty(aesKey)){
c64e12	105	aesKey = constantBean.getFixedAesKey();
C	106	if(StringUtils.isEmpty(aesKey)){
	107	throw new RuntimeException("mysql的AES秘钥不能为空:"+field.getName());
e29546	108	}
c64e12	109	}
C	110	String key = aesKeys.get(field.getName());
	111	if(StringUtils.isEmpty(key)){
	112	aesKeys.put(field.getName(),aesKey);
	113	aesKeysFild.put(field.getName(),aesKey);
	114	isAes = true;
e29546	115	}else{
c64e12	116	isAes = true;
C	117	aesKeysFild.put(field.getName(),aesKey);
	118	if(!aesKey.equals(key)){
	119	throw new RuntimeException("字段/定义的AES秘钥字段【"+field.getName()+"】多个一样，但是AES秘钥不一样");
e29546	120	}
C	121	}
	122	}
c64e12	123	}
C	124	if(isAes){
	125	aesKeysTable.put(tableName,aesKeysFild);
e29546	126	}
C	127	}
	128	}
	129	}
	130
	131	/*获取包下面的所有文件/
	132	public static Set<Class<?>> classData(String packPath){
346eb2	133	Set<Class<?>> classes = new LinkedHashSet();
C	134	String[] split = packPath.split(",\|;");
	135	String[] var3 = split;
	136	int var4 = split.length;
c64e12	137
346eb2	138	label82:
C	139	for(int var5 = 0; var5 < var4; ++var5) {
	140	String pack = var3[var5];
c64e12	141	boolean recursive = true;
346eb2	142	String packageName = pack;
C	143	String packageDirName = pack.replace('.', '/');
	144
	145	try {
	146	Enumeration dirs = Thread.currentThread().getContextClassLoader().getResources(packageDirName);
	147
	148	while(true) {
	149	label75:
	150	while(true) {
	151	if (!dirs.hasMoreElements()) {
	152	continue label82;
	153	}
	154
	155	URL url = (URL)dirs.nextElement();
	156	String protocol = url.getProtocol();
	157	if ("file".equals(protocol)) {
	158	System.err.println("file类型的扫描:" + pack);
	159	String filePath = URLDecoder.decode(url.getFile(), "UTF-8");
	160	findAndAddClassesInPackageByFile(packageName, filePath, recursive, classes);
	161	} else if ("jar".equals(protocol)) {
	162	System.err.println("jar类型的扫描");
	163
	164	try {
	165	JarFile jar = ((JarURLConnection)url.openConnection()).getJarFile();
	166	Enumeration entries = jar.entries();
	167
	168	while(true) {
	169	JarEntry entry;
	170	String name;
	171	int idx;
	172	do {
	173	do {
	174	if (!entries.hasMoreElements()) {
	175	continue label75;
	176	}
	177
	178	entry = (JarEntry)entries.nextElement();
	179	name = entry.getName();
	180	if (name.charAt(0) == '/') {
	181	name = name.substring(1);
	182	}
	183	} while(!name.startsWith(packageDirName));
	184
	185	idx = name.lastIndexOf(47);
	186	if (idx != -1) {
	187	packageName = name.substring(0, idx).replace('/', '.');
	188	}
	189	} while(idx == -1 && !recursive);
	190
	191	if (name.endsWith(".class") && !entry.isDirectory()) {
	192	String className = name.substring(packageName.length() + 1, name.length() - 6);
	193
	194	try {
	195	classes.add(Class.forName(packageName + '.' + className));
	196	} catch (ClassNotFoundException var20) {
	197	var20.printStackTrace();
	198	}
	199	}
	200	}
	201	} catch (IOException var21) {
	202	var21.printStackTrace();
	203	}
	204	}
c64e12	205	}
e29546	206	}
346eb2	207	} catch (IOException var22) {
C	208	var22.printStackTrace();
e29546	209	}
C	210	}
346eb2	211
e29546	212	return classes;
C	213	}
	214
	215	/**
	216	* 以文件的形式来获取包下的所有Class
	217	*
	218	* @param packageName
	219	* @param packagePath
	220	* @param recursive
	221	* @param classes
	222	*/
	223	public static void findAndAddClassesInPackageByFile(
	224	String packageName,
	225	String packagePath,
	226	final boolean recursive,
	227	Set<Class<?>> classes){
	228	// 获取此包的目录建立一个File
	229	File dir = new File(packagePath);
	230	// 如果不存在或者也不是目录就直接返回
	231	if (!dir.exists() \|\| !dir.isDirectory()) {
	232	// log.warn("用户定义包名 " + packageName + " 下没有任何文件");
	233	return;
	234	}
	235	// 如果存在就获取包下的所有文件包括目录
	236	File[] dirfiles = dir.listFiles(new FileFilter(){
	237	// 自定义过滤规则如果可以循环(包含子目录) 或则是以.class结尾的文件(编译好的java类文件)
	238	@Override
	239	public boolean accept(File file){
	240	return (recursive && file.isDirectory()) \|\| (file.getName().endsWith(".class"));
	241	}
	242	});
	243	// 循环所有文件
	244	for (File file : dirfiles){
	245	// 如果是目录则继续扫描
	246	if (file.isDirectory()) {
	247	findAndAddClassesInPackageByFile(packageName + "." + file.getName(), file.getAbsolutePath(), recursive, classes);
	248	}else{
	249	// 如果是java类文件去掉后面的.class 只留下类名
	250	String className = file.getName().substring(0, file.getName().length() - 6);
	251	try{
	252	// 添加到集合中去
	253	// classes.add(Class.forName(packageName + '.' +
	254	// className));
	255	// 经过回复同学的提醒，这里用forName有一些不好，会触发static方法，没有使用classLoader的load干净
	256	classes.add(Thread.currentThread().getContextClassLoader().loadClass(packageName + '.' + className));
	257	}catch (ClassNotFoundException e){
	258	// log.error("添加用户自定义视图类错误找不到此类的.class文件");
	259	e.printStackTrace();
	260	}
	261	}
	262	}
	263	}
	264
	265	/**
	266	* 获取父类的字段
	267	* @param fields
	268	* @param clas
	269	* @return
	270	*/
	271	public static Field[] getPatentFields(Field[] fields,Class<?> clas){
	272	if (clas.getSuperclass() != null) {
	273	Class clsSup = clas.getSuperclass();
	274	List<Field> fieldList = new ArrayList<Field>();
	275	fieldList.addAll(Arrays.asList(fields));
	276	fieldList.addAll(Arrays.asList(clsSup.getDeclaredFields()));
	277	fields = new Field[fieldList.size()];
	278	int i = 0;
	279	for (Object field : fieldList.toArray()) {
	280	fields[i] = (Field) field;
	281	i++;
	282	}
	283	fields = getPatentFields(fields,clsSup);
	284	}
	285	return fields;
	286	}
	287
	288
	289	}