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本篇內容主要講解“微信小程序接口加密怎么實現”,感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷,實用性強。下面就讓小編來帶大家學習“微信小程序接口加密怎么實現”吧!
小程序請求的所有接口參數必須加密,后臺返回數據也需要加密,并且增加Token驗證
1.下載一份Js版的aesUtil.js源碼。
2.下載一份Js版的md5.js源碼。
3.在pulic.js中進行加解密操作代碼如下,其中秘鑰和秘鑰偏移量要與后臺的一致。
var CryptoJS = require('aesUtil.js'); //引用AES源碼js
var md5 = require('md5.js')
var key = CryptoJS.enc.Utf8.parse("76CAA1C88F7F8D1D"); //十六位十六進制數作為秘鑰
var iv = CryptoJS.enc.Utf8.parse('91129048100F0494'); //十六位十六進制數作為秘鑰偏移量
//解密方法
function Decrypt(word) {
var encryptedHexStr = CryptoJS.enc.Hex.parse(word);
var srcs = CryptoJS.enc.Base64.stringify(encryptedHexStr);
var decrypt = CryptoJS.AES.decrypt(srcs, key, {
iv: iv,
mode: CryptoJS.mode.CBC,
padding: CryptoJS.pad.Pkcs7
});
var decryptedStr = decrypt.toString(CryptoJS.enc.Utf8);
return decryptedStr.toString();
}
//加密方法
function Encrypt(word) {
var srcs = CryptoJS.enc.Utf8.parse(word);
var encrypted = CryptoJS.AES.encrypt(srcs, key, {
iv: iv,
mode: CryptoJS.mode.CBC,
padding: CryptoJS.pad.Pkcs7
});
return encrypted.ciphertext.toString().toUpperCase();
}
//暴露接口
module.exports.Decrypt = Decrypt;
module.exports.Encrypt = Encrypt;
4.在網絡請求幫助類中進行參數的加密和返回數據的解密操作。
var aes = require('../utils/public.js')var md5 = require("../utils/md5.js") ... /*** 網絡請求*/function request(method, loading, url, params, success, fail) {var url = BASE_URL + url;//請求參數轉為JSON字符串var jsonStr = JSON.stringify(params);console.log(url + ' params=> ' + jsonStr)//根據特定規則生成Tokenvar token = productionToken(params);//加密請求參數var aesData = aes.Encrypt(jsonStr)console.log('請求=>明文參數:' + jsonStr)console.log('請求=>加密參數:' + aesData)...wx.request({url: url,method: method,header: {'Content-Type': 'application/x-www-form-urlencoded;charset=utf-8','Token': token},data: {aesData: aesData},// data: params,success: function(res) {//判斷請求結果是否成功if (res.statusCode == 200 && res.data != '' && res.data != null) {//解密返回數據console.log('返回=>加密數據:' + res.data);var result = aes.Decrypt(res.data);console.log('返回=>明文數據:'+result);success(JSON.parse(result))} else {fail()}},fail: function(res) {fail()},})}
其中生成Token的規則,【生成Token的規則可根據具體的業務邏輯自己定義,我這里使用的規則是根據請求參數的字母排序取其value并加上當前時間戳再進行MD5加密】
/*** 生成Token*/function productionToken(params) {var obj = util.objKeySort(params);var value = '';for (var item in obj) {value += obj[item];}//加上當前時間戳value += util.getTokenDate(new Date())//去除所有空格value = value.replace(/\s+/g, "")//進行UTF-8編碼value = encodeURI(value);//進行MD5碼加密value = md5.hex_md5(value)return value;}//util的排序函數function objKeySort(obj) {//先用Object內置類的keys方法獲取要排序對象的屬性名,再利用Array原型上的sort方法對獲取的屬性名進行排序,newkey是一個數組var newkey = Object.keys(obj).sort();//創建一個新的對象,用于存放排好序的鍵值對 var newObj = {};//遍歷newkey數組for (var i = 0; i < newkey.length; i++) {//向新創建的對象中按照排好的順序依次增加鍵值對newObj[newkey[i]] = obj[newkey[i]];}//返回排好序的新對象return newObj;}
由于初學SpringMVC,使用的方式不一定是最優最好的,如有不妥善之處,請各位看官多多指教 思路:
通過過濾器攔截請求參數,通過自定義參數包裝器對參數進行解密。 在攔截器獲取請求的Token并生成服務器端Token進行驗證。 對返回參數通過JSON轉換器進行加密處理。
1.重寫HttpServletRequestWrapper,在自定義的HttpServletRequestWrapper 中對參數進行處理
/*** Describe:請求參數包裝器 主要作用的過濾參數并解密* Created by 吳蜀黍 on 2018-08-07 09:37**/@Slf4jpublic class ParameterRequestWrapper extends HttpServletRequestWrapper { private Map<String, String[]> params = new HashMap<>(); @SuppressWarnings("unchecked")public ParameterRequestWrapper(HttpServletRequest request) {// 將request交給父類,以便于調用對應方法的時候,將其輸出,其實父親類的實現方式和第一種new的方式類似super(request);//將參數表,賦予給當前的Map以便于持有request中的參數this.params.putAll(request.getParameterMap());this.modifyParameterValues();} //重載一個構造方法public ParameterRequestWrapper(HttpServletRequest request, Map<String, Object> extendParams) {this(request);addAllParameters(extendParams);//這里將擴展參數寫入參數表} private void modifyParameterValues() {//將parameter的值去除空格后重寫回去 //獲取加密數據String aesParameter = getParameter(Constants.NetWork.AES_DATA);log.debug("[modifyParameterValues]==========>加密數據:{}", aesParameter);//解密String decryptParameter = null;try {decryptParameter = AesUtils.decrypt(aesParameter, Constants.AES.AES_KEY);log.debug("[modifyParameterValues]==========> 解密數據:{}", decryptParameter);Map<String, Object> map = JSON.parseObject(decryptParameter);Set<String> set = map.keySet();for (String key : set) {params.put(key, new String[]{String.valueOf(map.get(key))});}aesFlag(true);} catch (CommonBusinessException e) {aesFlag(false);log.error("[modifyParameterValues]", e);log.debug("[modifyParameterValues]==========>", e);}} /*** 解密成功標志*/private void aesFlag(boolean flag) {params.put(Constants.NetWork.AES_SUCCESS, new String[]{String.valueOf(flag)});} @Overridepublic Map<String, String[]> getParameterMap() {// return super.getParameterMap();return params;} @Overridepublic Enumeration<String> getParameterNames() {return new Vector<>(params.keySet()).elements();} @Overridepublic String getParameter(String name) {//重寫getParameter,代表參數從當前類中的map獲取String[] values = params.get(name);if (values == null || values.length == 0) {return null;}return values[0];} public String[] getParameterValues(String name) {//同上return params.get(name);} public void addAllParameters(Map<String, Object> otherParams) {//增加多個參數for (Map.Entry<String, Object> entry : otherParams.entrySet()) {addParameter(entry.getKey(), entry.getValue());}} public void addParameter(String name, Object value) {//增加參數if (value != null) {if (value instanceof String[]) {params.put(name, (String[]) value);} else if (value instanceof String) {params.put(name, new String[]{(String) value});} else {params.put(name, new String[]{String.valueOf(value)});}}}}
新建過濾器,在攔截器中調用自定義的參數包裝器
/*** Describe:請求參數過濾器* Created by 吳蜀黍 on 2018-08-07 10:02**/@Slf4jpublic class ParameterFilter implements Filter {@Overridepublic void init(FilterConfig filterConfig) throws ServletException {} @Overridepublic void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {//使用自定義的參數包裝器對參數進行處理ParameterRequestWrapper requestWrapper = new ParameterRequestWrapper((HttpServletRequest) servletRequest);filterChain.doFilter(requestWrapper, servletResponse);} @Overridepublic void destroy() {}}
web.xml中對過濾器進行配置
<!--過濾器--><filter><filter-name>parameterFilter</filter-name><filter-class>com.xxx.xxx.config.filter.ParameterFilter</filter-class></filter><filter-mapping><filter-name>parameterFilter</filter-name><!-- 過濾所有以.json結尾的資源--><url-pattern>*.json</url-pattern></filter-mapping>
AES加解密操作
/*** Describe:AES 加密* Created by 吳蜀黍 on 2018-08-03 17:47**/public class AesUtils {private static final String CHARSET_NAME = "UTF-8";private static final String AES_NAME = "AES";private static final String ALGORITHM = "AES/CBC/PKCS7Padding";private static final String IV = Constants.AES.AES_IV; static {Security.addProvider(new BouncyCastleProvider());} /*** 加密*/public static String encrypt(@NotNull String content, @NotNull String key) throws CommonBusinessException {try {Cipher cipher = Cipher.getInstance(ALGORITHM);SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(CHARSET_NAME), AES_NAME);AlgorithmParameterSpec paramSpec = new IvParameterSpec(IV.getBytes());cipher.init(Cipher.ENCRYPT_MODE, keySpec, paramSpec);return ParseSystemUtil.parseByte2HexStr(cipher.doFinal(content.getBytes(CHARSET_NAME)));} catch (Exception ex) {throw new CommonBusinessException("加密失敗");}} /*** 解密*/public static String decrypt(@NotNull String content, @NotNull String key) throws CommonBusinessException {try {Cipher cipher = Cipher.getInstance(ALGORITHM);SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(CHARSET_NAME), AES_NAME);AlgorithmParameterSpec paramSpec = new IvParameterSpec(IV.getBytes());cipher.init(Cipher.DECRYPT_MODE, keySpec, paramSpec);return new String(cipher.doFinal(Objects.requireNonNull(ParseSystemUtil.parseHexStr2Byte(content))), CHARSET_NAME);} catch (Exception ex) {throw new CommonBusinessException("解密失敗");}} }
2.新建攔截器,驗證Token以及解密的判斷
@Overridepublic boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object handler) throws Exception {//如果不是映射到方法直接通過if (!(handler instanceof HandlerMethod)) {return true;}//判斷參數包裝器中對請求參數的解密是否成功boolean aesSuccess = Boolean.parseBoolean(httpServletRequest.getParameter(Constants.NetWork.AES_SUCCESS));if (!aesSuccess) {this.sendMsg(Constants.NetWork.CODE_DECRYPTION_FAILURE, Constants.NetWork.MEG_AES_FAIL, httpServletResponse);return false;}//獲取客戶端上傳TokenString token = httpServletRequest.getHeader(Constants.NetWork.TOKEN_HEAD_KEY);if (StringUtils.isNullOrEmpty(token)) {sendMsg(Constants.NetWork.CODE_TOKEN_INVALID, Constants.NetWork.MSG_TOKEN_EMPTY, httpServletResponse);return false;}//驗證Token的有效性if (!TokenUtils.verificationToken(token, httpServletRequest.getParameterMap())) {sendMsg(Constants.NetWork.CODE_TOKEN_INVALID, Constants.NetWork.MSG_TOKEN_INVALID, httpServletResponse);return false;}return true;} /*** 驗證失敗 發送消息*/private void sendMsg(String msgCode, String msg, HttpServletResponse httpServletResponse) throws IOException {httpServletResponse.setContentType("application/json; charset=utf-8");PrintWriter writer = httpServletResponse.getWriter();String jsonString = JSON.toJSONString(StandardResult.create(msgCode, msg));try {//對驗證失敗的返回信息進行加密jsonString = AesUtils.encrypt(jsonString, Constants.AES.AES_KEY);} catch (CommonBusinessException e) {e.printStackTrace();jsonString = null;log.error("[sendMsg]", e);}writer.print(jsonString);writer.close();httpServletResponse.flushBuffer();}
在spring中對攔截器注冊
<mvc:interceptors><!-- 使用bean定義一個Interceptor,直接定義在mvc:interceptors根下面的Interceptor將攔截所有的請求 --><mvc:interceptor><!-- 攔截所有請求 --><mvc:mapping path="/**"/><!-- 需排除攔截的地址 --><!--<mvc:exclude-mapping path="/"/>--><bean class="com.xxx.xxx.config.interceptor.AsyncHandlerInterceptor"/></mvc:interceptor></mvc:interceptors>
Token的驗證
/*** Describe:Token幫助類* Created by 吳蜀黍 on 2018-08-04 14:48**/@Slf4jpublic class TokenUtils {/*** 驗證Token** @param token 客戶端上傳Token* @param mapTypes 請求參數集合* @return boolean*/public static boolean verificationToken(String token, Map mapTypes) {try {return StringUtils.saleEquals(token, getToken(mapTypes));} catch (UnsupportedEncodingException e) {log.error("[verificationToken]", e);return false;}} /*** 通過客戶端請求參數產生Token*/private static String getToken(Map mapTypes) throws UnsupportedEncodingException {List<String> mapKes = new ArrayList<>();for (Object obj : mapTypes.keySet()) {String value = String.valueOf(obj);//去除參數中的加密相關keyif (StringUtils.saleEquals(value, Constants.NetWork.AES_SUCCESS) ||StringUtils.saleEquals(value, Constants.NetWork.AES_DATA)) {break;}mapKes.add(value);}//排序keyCollections.sort(mapKes);StringBuilder sb = new StringBuilder();for (String key : mapKes) {String value = ((String[]) mapTypes.get(key))[0];sb.append(value);}//加上時間戳,去除所有空格 進行MD5加密String string = sb.append(DateUtils.getDateStr(DateUtils.FORMAT_YYYYMMDDHH)).toString().replace(" ", "");return MD5.getMD5(URLEncoder.encode(string, "UTF-8"));}}
3.對返回數據進行加密處理,新建JSON轉換器繼承自阿里的FastJsonHttpMessageConverter
/*** Describe:Json轉換器 將返回數據加密* Created by 吳蜀黍 on 2018-08-07 13:57**/@Slf4jpublic class JsonMessageConverter extends FastJsonHttpMessageConverter { @Overrideprotected void writeInternal(Object object, HttpOutputMessage outputMessage) throws IOException,HttpMessageNotWritableException {OutputStream out = outputMessage.getBody();try {String jsonString = JSON.toJSONString(object);log.debug("[writeInternal]======>返回明文數據:{}" + jsonString);//對返回數據進行AES加密jsonString = AesUtils.encrypt(jsonString, Constants.AES.AES_KEY);log.debug("[writeInternal]======>返回加密數據:{}" + jsonString);out.write(jsonString.getBytes());} catch (CommonBusinessException e) {e.printStackTrace();log.error("[writeInternal]======>", e);}out.close();}}
spring中對JSON轉換器進行配置
<mvc:message-converters><!--<bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">--><bean class="com.xxx.xxx.config.converter.JsonMessageConverter"><property name="supportedMediaTypes"><list><value>text/html;charset=UTF-8</value><value>application/json</value><value>application/xml;charset=UTF-8</value></list></property><property name="features"><list><!-- 默認的意思就是不配置這個屬性,配置了就不是默認了 --><!-- 是否輸出值為null的字段 ,默認是false--><value>WriteMapNullValue</value><value>WriteNullNumberAsZero</value><value>WriteNullListAsEmpty</value><value>WriteNullStringAsEmpty</value><value>WriteNullBooleanAsFalse</value><value>WriteDateUseDateFormat</value></list></property></bean></mvc:message-converters>
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