1.加密算法

package cn.sh.ideal.encryption;import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder;import javax.crypto.*; import javax.crypto.spec.SecretKeySpec; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.security.InvalidKeyException; import java.security.NoSuchAlgorithmException; import java.security.SecureRandom;/*** @FileName: SymmetricEncoder* @Author Steven* @Date: 2020/8/31*/ public class SymmetricEncoder {/*** 加密* 1.構造密鑰生成器* 2.根據ecnodeRules規則初始化密鑰生成器* 3.產生密鑰* 4.創建和初始化密碼器* 5.內容加密* 6.返回字符串*/public static String AESEncode(String content) {try {// 初始化算法,設置成“SHA1PRNG”是為了防止在linux環境下隨機生成算法SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");secureRandom.setSeed("xxx".getBytes("utf-8"));//1.構造密鑰生成器，指定為AES算法,不區分大小寫KeyGenerator keygen = KeyGenerator.getInstance("AES");//2.根據ecnodeRules規則初始化密鑰生成器//生成一個128位的隨機源,根據傳入的字節數組keygen.init(128, secureRandom);//3.產生原始對稱密鑰SecretKey original_key = keygen.generateKey();//4.獲得原始對稱密鑰的字節數組byte[] raw = original_key.getEncoded();//5.根據字節數組生成AES密鑰SecretKey key = new SecretKeySpec(raw, "AES");//6.根據指定算法AES自成密碼器Cipher cipher = Cipher.getInstance("AES");//7.初始化密碼器，第一個參數為加密(Encrypt_mode)或者解密解密(Decrypt_mode)操作，第二個參數為使用的KEYtry {cipher.init(Cipher.ENCRYPT_MODE, key);} catch (InvalidKeyException e) {e.printStackTrace();}//8.獲取加密內容的字節數組(這里要設置為utf-8)不然內容中如果有中文和英文混合中文就會解密為亂碼byte[] byte_encode = content.getBytes("utf-8");//9.根據密碼器的初始化方式--加密：將數據加密byte[] byte_AES = cipher.doFinal(byte_encode);//10.將加密后的數據轉換為字符串//這里用Base64Encoder中會找不到包//解決辦法：//在項目的Build path中先移除JRE System Library，再添加庫JRE System Library，重新編譯后就一切正常了。String AES_encode = new String(new BASE64Encoder().encode(byte_AES));//11.將字符串返回return AES_encode;} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (NoSuchPaddingException e) {e.printStackTrace();} catch (IllegalBlockSizeException e) {e.printStackTrace();} catch (BadPaddingException e) {e.printStackTrace();} catch (UnsupportedEncodingException e) {e.printStackTrace();}//如果有錯就返加nulllreturn null;}/*** 解密* 解密過程：* 1.同加密1-4步* 2.將加密后的字符串反紡成byte[]數組* 3.將加密內容解密*/public static String AESDncode(String content) {try {// 初始化算法,設置成“SHA1PRNG”是為了防止在linux環境下隨機生成算法SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");secureRandom.setSeed("xxx".getBytes("utf-8"));//1.構造密鑰生成器，指定為AES算法,不區分大小寫KeyGenerator keygen = KeyGenerator.getInstance("AES");//2.根據ecnodeRules規則初始化密鑰生成器//生成一個128位的隨機源,根據傳入的字節數組keygen.init(128, secureRandom);//3.產生原始對稱密鑰SecretKey original_key = keygen.generateKey();//4.獲得原始對稱密鑰的字節數組byte[] raw = original_key.getEncoded();//5.根據字節數組生成AES密鑰SecretKey key = new SecretKeySpec(raw, "AES");//6.根據指定算法AES自成密碼器Cipher cipher = Cipher.getInstance("AES");//7.初始化密碼器，第一個參數為加密(Encrypt_mode)或者解密(Decrypt_mode)操作，第二個參數為使用的KEYcipher.init(Cipher.DECRYPT_MODE, key);//8.將加密并編碼后的內容解碼成字節數組byte[] byte_content = new BASE64Decoder().decodeBuffer(content);/** 解密*/byte[] byte_decode = cipher.doFinal(byte_content);String AES_decode = new String(byte_decode, "utf-8");return AES_decode;} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (NoSuchPaddingException e) {e.printStackTrace();} catch (InvalidKeyException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} catch (IllegalBlockSizeException e) {e.printStackTrace();} catch (BadPaddingException e) {e.printStackTrace();}//如果有錯就返加nulllreturn null;} }

2.數據庫配置文件：datasource.properties

#測試數據庫加密信息 jdbc-driver=oracle.jdbc.driver.OracleDriver jdbc-url=jdbc:oracle:thin:@xx.xx.xx.xx:1521:snbst1 jdbc-user=cxjh3AWAFmPmsCdKYyoiPQ== jdbc-password=JhDsPPKPIKlJJJtDMJa9Ug== jdbc-url=jdbc:oracle:thin:@10.173.32.151:1521:snbst1 jdbc-user=h53HW7f3z7gAG1qFcSJqZQ== jdbc-password=XZRhnL0hqtC4fkHvypOIvg==

3.掃描配置文件解析propertie：EncryptPropertyPlaceholderConfigurer.java

package cn.sh.ideal.encryption;import org.apache.log4j.Logger; import org.springframework.beans.BeansException; import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;import java.util.Properties;/*** @FileName: EncryptPropertyPlaceholderConfigurer* @Author Steven* @Date: 2020/8/31*/ public class EncryptPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer {private Logger log = Logger.getLogger(EncryptPropertyPlaceholderConfigurer.class);@Overrideprotected void processProperties(ConfigurableListableBeanFactory beanFactoryToProcess,Properties props) throws BeansException {// 將加密的username解密后塞到propsString userName1 = props.getProperty("jdbc-user");if (userName1 != null) {props.setProperty("jdbc-user", SymmetricEncoder.AESDncode(userName1));}String password1 = props.getProperty("jdbc-password");if (password1 != null) {props.setProperty("jdbc-password", SymmetricEncoder.AESDncode(password1));}String userName2 = props.getProperty("jdbc-user1");if (userName2 != null) {props.setProperty("jdbc-user1", SymmetricEncoder.AESDncode(userName2));}String password2 = props.getProperty("jdbc-password1");if (password1 != null) {props.setProperty("jdbc-password1", SymmetricEncoder.AESDncode(password2));}super.processProperties(beanFactoryToProcess, props);}}

4.base-config.xml

<!--1.將bean注入spring容器中--><bean id="propertyConfigurer" class="cn.sh.ideal.encryption.EncryptPropertyPlaceholderConfigurer"><property name="locations"><list> <value>classpath:cn/sh/ideal/encryption/jdbc.properties</value></list></property></bean><bean id="dataSource"class="org.apache.commons.dbcp.BasicDataSource"destroy-method="close"><property name="driverClassName" value="${jdbc-driver}"/><property name="url" value="${jdbc-url}"/><property name="username" value="${jdbc-user}"/><property name="password" value="${jdbc-password}"/></bean>

總結

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