Vue+Springboot实现接口签名的示例代码

接口签名目的是为了，确保请求参数不会被篡改，请求的数据是否已超时，数据是否重复提交等。

接口签名示意图

客户端提交请求时，将以下参数按照约定签名方式进行签名，随后将参数和签名一同提交服务端：

1.请求头部分（header）appid：针对不同的调用方分配不同的appid。noce：请求的流水号，防止重复提交。timestamp：请求时间戳，验证请求是否已超时失效。

2.数据部分Path：按照path中的参数将所有key=value进行拼接。Query：按照所有key=value进行拼接。Form：按照所有key=value进行拼接Body：Json，按照所有key=value进行拼接。String，整个字符串作为一个拼接。

签名

服务端提接收交请求后，同样通过接收的“请求头部分”、“数据部分”的参数进行拼接。随后验证客户端提交的签名是否正确。

客户端（Vue）首先需要安装“jsrsasign”库，以便实现 RSA 加密、解密、签名、验签等功能。官方地址：http://kjur.github.io/jsrsasign/执行以下命令：

npm install jsrsasign -save

安装完成后，封装sign.js

import {KJUR, KEYUTIL, hex2b64, b64tohex} from ’jsrsasign’// 签名算法const ALGORITHM = ’SHA256withRSA’// 私钥签名const RSA_SIGN = (privateKey, src) => { const signature = new KJUR.crypto.Signature({’alg’: ALGORITHM}) // 来解析密钥 const priKey = KEYUTIL.getKey(privateKey) signature.init(priKey) // 传入待签明文 signature.updateString(src) const a = signature.sign() // 转换成base64，返回 return hex2b64(a) }// 公钥验签const RSA_VERIFY_SIGN = (publicKey, src, data) => { const signature = new KJUR.crypto.Signature({’alg’: ALGORITHM, ’prvkeypem’: publicKey}) signature.updateString(src) return signature.verify(b64tohex(data))}export { RSA_SIGN, RSA_VERIFY_SIGN}

客户端（Vue）通过sign.js进行加签、验签。

const src = ’我是一段测试字符串2’const publicKey = ’-----BEGIN PUBLIC KEY-----n’ + ’MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC35wxzdTzseajkYL06hEKBCEJun’ + ’JQ/nySId2oTnsxbLiSTEjpAESSbML1lqkKaIwjrSFZzyLMH6DirsoEQcATqqoCDUn’ + ’/H9QNVb5jMSAxxdQusQkTWz6k07bEuy1ppVjpGxNi8o2OGNd+lwPC/hOSDR7lpfmn’ + ’aXLIjEwKSXzil7YAHQIDAQABn’ + ’-----END PUBLIC KEY-----’const privateKey = ’-----BEGIN PRIVATE KEY-----n’ + ’MIICdQIBADANBgkqhkiG9w0BAQEFAASCAl8wggJbAgEAAoGBALfnDHN1POx5qORgn’ + ’vTqEQoEIQm4lD+fJIh3ahOezFsuJJMSOkARJJswvWWqQpojCOtIVnPIswfoOKuygn’ + ’RBwBOqqgINT8f1A1VvmMxIDHF1C6xCRNbPqTTtsS7LWmlWOkbE2LyjY4Y136XA8Ln’ + ’+E5INHuWl+ZpcsiMTApJfOKXtgAdAgMBAAECgYB2PAcGSC7mPoW2ZvfiIlx7hurmn’ + ’0885D1hu5yohqUOTklXgRWQUTU+zYRHU8LERJgcZQKoKDXqdIPS584Q2mRe0uZMrn’ + ’vaiaBVEnHQreUJUQ8UN12pPUdBHDZvOk3L7/fZHk6A8uy5e09p2rsn+Vfki3zijpn’ + ’7Pd758HMtjuiHBb2QQJBAOuN6jdWBr/zb7KwM9N/cD1jJd6snOTNsLazH/Z3Yt0Tn’ + ’jlsFmRJ6rIt/+jaLKG6YTR8SFyW5LIQTbreeQHPw4FECQQDH3Wpd/mBMMcgpxLZ0n’ + ’F5p1ieza+VA5fbxkQ0hdubEP26B6YwhkTB/xMSOwEjmUI57kfgOTvub36/peb8rIn’ + ’JdwNAkB3fzwlrGeqMzYkIU15avomuki46TqCvHJ8jOyXHUOzQbuDI5jfDgrAjkECn’ + ’MKBnUq41J/lEMueJbU5KqmaqKrWxAkAyexlHnl1iQVymOBpBXkjUET8y26/IpZp0n’ + ’1I2tpp4zPCzfXK4c7yFOQTQbX68NXKXgXne21Ivv6Ll3KtNUFEPtAkBcx5iWU430n’ + ’0/s6218/enaa8jgdqw8Iyirnt07uKabQXqNnvbPYCgpeswEcSvQqMVZVKOaMrjKOn’ + ’G319Es83iq/mn’ + ’-----END PRIVATE KEY-----n’console.log(’明文:’, src)const data = RSA_SIGN(privateKey, src)console.log(’签名后的结果:’, data)const res = RSA_VERIFY_SIGN(publicKey, src, data)console.log(’验签结果:’, res)

服务端（Spring boot）接收请求后，需要对数据和签名，进行验证。

首先引入依赖——hutool工具包，Hutool是一个Java工具包，也只是一个工具包，它帮助我们简化每一行代码，减少每一个方法，让Java语言也可以“甜甜的”。

官网地址：https://www.hutool.cn/

在pom.xml下增加如下配置：

<dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>5.3.5</version></dependency>

服务端（Spring boot）首先要获取客户端（Vue）请求的数据，上文已经描述了请求的数据有两部分，分别是“请求头部分”、“数据部分”。所以需要配置拦截器，对以上两部分进行获取。

配置拦截器（MyInterceptor.java），代码如下：

import lombok.extern.slf4j.Slf4j;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Component;import org.springframework.util.StreamUtils;import org.springframework.web.servlet.HandlerInterceptor;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;@Slf4j@Componentpublic class MyInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {//获取请求参数String queryString = request.getQueryString();log.info('请求参数:{}', queryString);// 获取headerlog.info('key:{}',request.getHeader('timestamp'));MyHttpServletRequestWrapper myRequestWrapper = new MyHttpServletRequestWrapper(request);//获取请求bodybyte[] bodyBytes = StreamUtils.copyToByteArray(myRequestWrapper.getInputStream());String body = new String(bodyBytes, request.getCharacterEncoding());log.info('请求体：{}', body);return true; }}

在获取“请求体body”时，由于“HttpServletRequest”只能读取一次，拦截器读取后，后续Controller在读取时为空，所以需要重写HttpServletRequestWrapper：

import org.springframework.util.StreamUtils;import javax.servlet.ReadListener;import javax.servlet.ServletInputStream;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletRequestWrapper;import java.io.*;public class MyHttpServletRequestWrapper extends HttpServletRequestWrapper { /** * 缓存下来的HTTP body */ private byte[] body; public MyHttpServletRequestWrapper(HttpServletRequest request) throws IOException {super(request);body = StreamUtils.copyToByteArray(request.getInputStream()); } @Override public ServletInputStream getInputStream() throws IOException {InputStream bodyStream = new ByteArrayInputStream(body);return new ServletInputStream(){ @Override public int read() throws IOException {return bodyStream.read(); } @Override public boolean isFinished() {return false; } @Override public boolean isReady() {return true; } @Override public void setReadListener(ReadListener readListener) { }}; } @Override public BufferedReader getReader() throws IOException {return new BufferedReader(new InputStreamReader(getInputStream())); }}

之后，需要创建过滤器，将“MyHttpServletRequestWrapper” 替换“ServletRequest”，代码如下：

import lombok.extern.slf4j.Slf4j;import javax.servlet.*;import javax.servlet.http.HttpServletRequest;import java.io.IOException;@Slf4jpublic class RepeatedlyReadFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {ServletRequest requestWrapper = null;if(servletRequest instanceof HttpServletRequest) { requestWrapper = new MyHttpServletRequestWrapper((HttpServletRequest) servletRequest);}if(requestWrapper == null) { filterChain.doFilter(servletRequest, servletResponse);} else { filterChain.doFilter(requestWrapper, servletResponse);} } @Override public void destroy() { }}

之后创建自定义配置，CorsConfig.java，将过滤器、拦截器加入配置：

import com.xyf.interceptor.MyInterceptor;import com.xyf.interceptor.RepeatedlyReadFilter;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.web.servlet.FilterRegistrationBean;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;@Configurationpublic class CorsConfig extends WebMvcConfigurationSupport { private MyInterceptor myInterceptor; @Autowired public CorsConfig (MyInterceptor myInterceptor){this.myInterceptor = myInterceptor; } // 注册过滤器 @Bean public FilterRegistrationBean<RepeatedlyReadFilter> repeatedlyReadFilter() {FilterRegistrationBean registration = new FilterRegistrationBean();RepeatedlyReadFilter repeatedlyReadFilter = new RepeatedlyReadFilter();registration.setFilter(repeatedlyReadFilter);registration.addUrlPatterns('/*');return registration; } @Override protected void addInterceptors(InterceptorRegistry registry) {// addPathPatterns添加需要拦截的命名空间；// excludePathPatterns添加排除拦截命名空间registry.addInterceptor(myInterceptor).addPathPatterns('/**');//.excludePathPatterns('/api/sys/login') }}

最后，完成验签，代码如下：

import cn.hutool.core.codec.Base64;import cn.hutool.crypto.SecureUtil;import cn.hutool.crypto.asymmetric.Sign;import cn.hutool.crypto.asymmetric.SignAlgorithm;byte[] data = '我是一段测试字符串2'.getBytes();String publicKey = 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC35wxzdTzseajkYL06hEKBCEJun' +'JQ/nySId2oTnsxbLiSTEjpAESSbML1lqkKaIwjrSFZzyLMH6DirsoEQcATqqoCDUn' +'/H9QNVb5jMSAxxdQusQkTWz6k07bEuy1ppVjpGxNi8o2OGNd+lwPC/hOSDR7lpfmn' +'aXLIjEwKSXzil7YAHQIDAQAB';Sign sign = SecureUtil.sign(SignAlgorithm.SHA256withRSA,null,publicKey);//客户端传来的签名String qm = 'IhY3LNuFn0isud1Pk6BL2eJV3Jl/UzDCYsdG9CYyJwOGqwnzStsv/RiYLnVP4bnQh1NRPMazY6ux/5Zz5Ypcx6RI5W1p5BDbO2afuIZX7x/eIu5utwsanhbxEfvm3XOsyuTbnMDh6BQUrXb4gUz9qgt9IXWjQdqnQRRv3ywzWcA=';byte[] signed = Base64.decode(qm);//验证签名boolean verify = sign.verify(data, signed);3、公钥、私钥生成

可通过一些网站在线生成公钥、私钥网址：https://www.bejson.com/enc/rsa/

bejson在线生成公钥、私钥

由于客户端加签、服务端验签。所以加签、验签的方式务必一致，否则将无法验证签名。Vue、Java有不同的签名工具库，使用前要做好测试。

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