spring使用加密的属性文件

来源：互联网发布：linux chgrp chown 编辑：程序博客网时间：2024/06/11 12:59

des加密工具类

import java.security.Key;import java.security.SecureRandom;import javax.crypto.Cipher;import javax.crypto.KeyGenerator;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;public class DESUtils {    private static Key key;    //加密密钥    private static String KEY_STR = "myKey";    static {        try {            KeyGenerator generator = KeyGenerator.getInstance("DES");            generator.init(new SecureRandom(KEY_STR.getBytes()));            key = generator.generateKey();            generator = null;        } catch (Exception e) {            throw new RuntimeException(e);        }    }    /**     * 对str进行DES加密     *      * @param str     * @return     */    public static String getEncryptString(String str) {        BASE64Encoder base64en = new BASE64Encoder();        try {            byte[] strBytes = str.getBytes("UTF8");            Cipher cipher = Cipher.getInstance("DES");            cipher.init(Cipher.ENCRYPT_MODE, key);            byte[] encryptStrBytes = cipher.doFinal(strBytes);            return base64en.encode(encryptStrBytes);        } catch (Exception e) {            throw new RuntimeException(e);        }    }    /**     * 对str进行DES解密     *      * @param str     * @return     */    public static String getDecryptString(String str) {        BASE64Decoder base64De = new BASE64Decoder();        try {            byte[] strBytes = base64De.decodeBuffer(str);            Cipher cipher = Cipher.getInstance("DES");            cipher.init(Cipher.DECRYPT_MODE, key);            byte[] decryptStrBytes = cipher.doFinal(strBytes);            return new String(decryptStrBytes, "UTF8");        } catch (Exception e) {            throw new RuntimeException(e);        }    }    public static void main(String[] args) throws Exception {        if (args == null || args.length < 1) {            System.out.println("请输入要加密的字符，用空格分隔.");        } else {            for (String arg : args) {                System.out.println(arg + ":" + getEncryptString(arg));            }        }        //System.out.println(getDecryptString("WnplV/ietfQ="));        //System.out.println(getDecryptString("gJQ9O+q34qk="));    }}

加密用户名密码

在控制台执行java DESUtils root 123456得到加密后的字符串，用于配置属性文件

扩展PropertyPlaceholderConfigurer类

mport org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;public class EncryptPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer {       private String[] encryptPropNames ={"userName","password"};    @Override    protected String convertProperty(String propertyName, String propertyValue) {               if(isEncryptProp(propertyName)){            String decryptValue = DESUtils.getDecryptString(propertyValue);            System.out.println(decryptValue);            return decryptValue;        }else{            return propertyValue;        }    }    /**     * 判断是否是加密的属性     * @param propertyName     * @return     */    private boolean isEncryptProp(String propertyName){        for(String encryptPropName:encryptPropNames){            if(encryptPropName.equals(propertyName)){                return true;            }        }        return false;    }}

0 0