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已于 2022-10-05 11:07:48 修改
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于 2022-05-22 16:51:10 首次发布
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filter aes加密
Java接口加密：可以对请求参数、响应参数加密 加密的两种方法推荐
1、使用过滤器加密filter
AES加密
/** * 过滤器拦截请求，实现加密解密功能 * @author samxie * @version 1.0 * @date 2022/5/6 18:13 * @Component 将此Filter交给Spring容器管理 * @WebFilter 通过WebFilter进行Filter声明，这样容器在进行部署的时候就会处理该Filter * */ @SuppressWarnings("PMD") //CHECKSTYLE:OFF @Slf4j @Component public class EncryptFilter implements Filter { //LTAI4FzVG1h.....密文 @Value("${gateway.secret.key}") private String aesKey; //屏蔽的环境:local,dev @Value("${env.encrypt.profile}") private String encryptProfile; @Resource private Environment environment; //屏蔽的url private String[] ignoreUrl = new String[] { "/v1/saas/login", "/v1/saas/sendLoginSms", //自己加 }; private AntPathMatcher antPathMatcher = new AntPathMatcher(); @Override public void init(FilterConfig filterConfig) throws ServletException { // Auto-generated method stub } /** * 有错误相应返回-44 * * @param response * @throws IOException */ private void getFailResponse(HttpServletResponse response) throws IOException { response.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=UTF-8"); PrintWriter out = null; out = response.getWriter(); //加密后的错误消息 {"code":0,"data":"系统繁忙，请稍后再试","ok":true} String errorMessage = "D9CHXXPAM3SIJmYEyF6QUQhEqfHJldkVqXf4th3Ev7DuagxdHgt5MsRVphBYi7yHTihZmKhKv3YYwAf1Dk77PA=="; out.write(JSONObject.toJSONString(errorMessage)); out.flush(); out.close(); } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) { HttpServletRequest httpRequest = (HttpServletRequest)request; HttpServletResponse httpResponse = (HttpServletResponse)response; // 过滤请求：路径 boolean flag = isIgnore(httpRequest, ignoreUrl); // 环境过滤 String env = environment.getProperty("spring.profiles.active"); //local dev test String profile = encryptProfile; if (null != env && profile.contains(env)) { flag = true; } if(flag) { try { chain.doFilter(httpRequest, httpResponse); } catch (IOException e) { log.error("e:{}", e); } catch (ServletException e) { log.error("e:{}", e); } } else { try { //响应处理 包装响应对象 res 并缓存响应数据 ResponseWrapper responseWrapper = new ResponseWrapper((HttpServletResponse) response); //执行业务逻辑 交给下一个过滤器或servlet处理 chain.doFilter(request, responseWrapper); byte[] resData = responseWrapper.getResponseData(); //设置响应内容格式，防止解析响应内容时出错 responseWrapper.setContentType("text/plain;charset=UTF-8"); //加密响应报文并响应 String encryptBASE64 = AesEncryptUtils.encrypt(new String(resData), aesKey); PrintWriter out = response.getWriter(); response.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=UTF-8"); out.write(JSONObject.toJSONString(encryptBASE64)); //out.print(encryptBASE64); out.flush(); out.close(); } catch(Exception e) { try { getFailResponse((HttpServletResponse)response); } catch (IOException ioException) { ioException.printStackTrace(); } log.error("加密异常信息 ", e); } } } @Override public void destroy() { // Auto-generated method stub } /** * 哪些路径不处理 * @param request * @param strArr * @return */ public boolean isIgnore(HttpServletRequest request, String[] strArr) { String path = request.getRequestURI(); for(String ignore : strArr) { boolean match = antPathMatcher.match(ignore, path); if (match) { return true; } } return false; } } //CHECKSTYLE:OFF
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工具类
/** * aes加密解密 */ public class AesEncryptUtils { //参数分别代表 算法名称/加密模式/数据填充方式 private static String algorithmstr = "AES/ECB/PKCS5Padding"; public static String getAlgorithmstr() { return algorithmstr; } /** * 加密 * @param content 加密的字符串 * @param encryptKey key值 * @return */ public static String encrypt(String content, String encryptKey) throws Exception { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128); Cipher cipher = Cipher.getInstance(algorithmstr); cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes(), "AES")); byte[] b = cipher.doFinal(content.getBytes("utf-8")); return Base64.encodeBase64String(b); } /** * 解密 * @param encryptStr 解密的字符串 * @param decryptKey 解密的key值 * @return */ public static String decrypt(String encryptStr, String decryptKey) throws Exception { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128); Cipher cipher = Cipher.getInstance(algorithmstr); cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(), "AES")); byte[] encryptBytes = Base64.decodeBase64(encryptStr); byte[] decryptBytes = cipher.doFinal(encryptBytes); return new String(decryptBytes); } }
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2、使用aop面向切面加密
filter aes加密是拦截器加密，而aop是面向切面方式加密，两者都可以实现不同程度的加密。
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