package org.dromara.common.encrypt.config;
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import cn.hutool.core.collection.CollectionUtil;
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import com.baomidou.mybatisplus.autoconfigure.MybatisPlusAutoConfiguration;
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import com.baomidou.mybatisplus.autoconfigure.MybatisPlusProperties;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.ibatis.io.Resources;
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import org.dromara.common.encrypt.annotation.EncryptField;
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import org.dromara.common.encrypt.core.EncryptorManager;
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import org.dromara.common.encrypt.interceptor.MybatisDecryptInterceptor;
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import org.dromara.common.encrypt.interceptor.MybatisEncryptInterceptor;
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import org.dromara.common.encrypt.properties.EncryptorProperties;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.autoconfigure.AutoConfiguration;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
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import org.springframework.boot.context.properties.EnableConfigurationProperties;
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import org.springframework.context.ConfigurableApplicationContext;
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import org.springframework.context.annotation.Bean;
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import org.springframework.core.io.Resource;
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import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
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import org.springframework.core.io.support.ResourcePatternResolver;
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import org.springframework.core.type.ClassMetadata;
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import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
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import org.springframework.util.ClassUtils;
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import java.lang.reflect.Field;
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import java.util.*;
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import java.util.stream.Collectors;
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import static org.springframework.util.StringUtils.tokenizeToStringArray;
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/**
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* 加解密配置
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*
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* @author 老马
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* @version 4.6.0
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*/
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@AutoConfiguration(after = MybatisPlusAutoConfiguration.class)
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@EnableConfigurationProperties(EncryptorProperties.class)
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@ConditionalOnProperty(value = "mybatis-encryptor.enable", havingValue = "true")
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@Slf4j
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public class EncryptorAutoConfiguration {
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@Autowired
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private EncryptorProperties properties;
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@Autowired
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private MybatisPlusProperties mybatisPlusProperties;
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@Bean
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public EncryptorManager encryptorManager() {
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Map<Class<?>, Set<Field>> fieldCache = scanEncryptClasses(mybatisPlusProperties.getTypeAliasesPackage());
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return new EncryptorManager(fieldCache);
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}
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// 通过typeAliasesPackage设置的扫描包,来确定哪些实体类进行缓存
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private Map<Class<?>, Set<Field>> scanEncryptClasses(String typeAliasesPackage) {
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Map<Class<?>, Set<Field>> fieldCache = new HashMap<>();
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try {
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String[] packagePatternArray = tokenizeToStringArray(typeAliasesPackage,
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ConfigurableApplicationContext.CONFIG_LOCATION_DELIMITERS);
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for (String packagePattern : packagePatternArray) {
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Resource[] resources = new PathMatchingResourcePatternResolver().getResources(ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX
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+ ClassUtils.convertClassNameToResourcePath(packagePattern) + "/**/*.class");
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for (Resource resource : resources) {
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ClassMetadata classMetadata = new CachingMetadataReaderFactory().getMetadataReader(resource).getClassMetadata();
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Class<?> clazz = Resources.classForName(classMetadata.getClassName());
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Set<Field> encryptFieldSet = getEncryptFieldSetFromClazz(clazz);
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if(CollectionUtil.isNotEmpty(encryptFieldSet)) {
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fieldCache.put(clazz, encryptFieldSet);
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}
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}
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}
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}catch (Exception e) {
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log.error("初始化数据安全缓存时出错:{}", e.getMessage());
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}
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return fieldCache;
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}
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// 获得一个类的加密字段集合
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private Set<Field> getEncryptFieldSetFromClazz(Class<?> clazz) {
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Set<Field> fieldSet = new HashSet<>();
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// 判断clazz如果是接口,内部类,匿名类就直接返回
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if (clazz.isInterface() || clazz.isMemberClass() || clazz.isAnonymousClass()) {
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return fieldSet;
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}
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while (clazz != null) {
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Field[] fields = clazz.getDeclaredFields();
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fieldSet.addAll(Arrays.asList(fields));
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clazz = clazz.getSuperclass();
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}
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fieldSet = fieldSet.stream().filter(field ->
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field.isAnnotationPresent(EncryptField.class) && field.getType() == String.class)
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.collect(Collectors.toSet());
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for (Field field : fieldSet) {
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field.setAccessible(true);
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}
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return fieldSet;
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}
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@Bean
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public MybatisEncryptInterceptor mybatisEncryptInterceptor(EncryptorManager encryptorManager) {
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return new MybatisEncryptInterceptor(encryptorManager, properties);
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}
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@Bean
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public MybatisDecryptInterceptor mybatisDecryptInterceptor(EncryptorManager encryptorManager) {
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return new MybatisDecryptInterceptor(encryptorManager, properties);
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}
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}
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