spring boot在request里解密参数返回
前言
有个业务需求，一个请求来源web，一个请求来源APP，web需求验证签名，APP的参数是经过加密，所以出现了两个Controller，除了解密获取参数方式不一样，其他内容一模一样，这样不太合理，所以我决定重构。
思路：既然只是解密不一样，获取到的参数是一样的，那可以写一个过滤器，在里面就把参数解密好，然后返回
Spring Boot在请求的时候是不允许直接修改HttpServletRequest里的paramsMap参数的，但是提供了一个HttpServletRequestWrapper类，继承这个类重写两个方法就可以了。
代码块
重写HttpServletRequestWrapper
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import javax.servlet.ReadListener; import javax.servlet.ServletInputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletRequestWrapper; import java.io.*; import java.nio.charset.Charset; import java.util.HashMap; import java.util.Map; public class ParameterRequest extends HttpServletRequestWrapper { private Map<String, String[]> params = new HashMap<>( 16 ); public ParameterRequest(HttpServletRequest request) throws IOException { super (request); this .params.putAll(request.getParameterMap()); } /** * 重载一个构造方法 * * @param request * @param extendParams */ public ParameterRequest(HttpServletRequest request, Map<String, String[]> extendParams) throws IOException { this (request); addAllParameters(extendParams); } @Override public String getParameter(String name) { String[] values = params.get(name); if (values == null || values.length == 0 ) { return null ; } return values[ 0 ]; } @Override public String[] getParameterValues(String name) { return params.get(name); } public void addAllParameters(Map<String, String[]> otherParams) { for (Map.Entry<String, String[]> entry : otherParams.entrySet()) { addParameter(entry.getKey(), entry.getValue()); } } public void addParameter(String name, Object value) { 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)}); } } } } |
思路是重写自定义一个Map存入参数，将解密后需要的参数放入，然后在过滤器中执行这个新的request
过滤器
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import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import com.fasterxml.jackson.databind.ObjectMapper; import lombok.extern.slf4j.Slf4j; import org.apache测试数据mons.lang3.StringUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.data.redis.core.StringRedisTemplate; import org.springframework.web.context.support.SpringBeanAutowiringSupport; import javax.servlet.*; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.nio.charset.Charset; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.regex.Matcher; import java.util.regex.Pattern; @Slf4j public class WebParamFilter implements Filter { private static final String OPTIONS = "OPTIONS" ; @Value ( "${jwt.info.urlPatterns}" ) private List<String> urlPatterns; @Override public void init(FilterConfig filterConfig) throws ServletException { SpringBeanAutowiringSupport.processInjectionBasedOnServletContext( this , filterConfig.getServletContext()); } @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) servletRequest; HttpServletResponse response = (HttpServletResponse) servletResponse; log.info( "开始过滤器===============" ); if (!isFilter(request)) { writerError(response, RetEnum.RET_TOKEN_ERROR); return ; } // 从请求头从获取请求类型，1是WEB，2是APP String requestType = request.getHeader( "requestType" ); if (StringUtils.isEmpty(requestType)) { writerError(response, RetEnum.RET_NOT_HEADER_ERROR); return ; } Map<String, String[]> paramsMap = new HashMap<>(); if ( "1" .equals(requestType)) { // 验证签名，签名错误直接返回 if (!compareSign(request)) { writerError(response, "签名错误" , 500 ); return ; } // 将请求的参数从request中取出，转换成JSON，放入自定义的Map中带给控制器 paramsMap.put( "params" , new String[]{JSONUtil.getJSONParam(request).toJSONString()}); ParameterRequest req = new ParameterRequest(request, paramsMap); filterChain.doFilter(req, response); } else if ( "2" .equals(requestType)) { // APP请求方式比较特殊，所以要从requestBody里读出JSON加密数据 String bodyStr = RequestBodyUtil.read(request.getReader()); // 然后再解密，拿到真正的参数转换成JSON，放入自定义的Map中带给控制器 JSONObject jsonParam = getJsonParam(bodyStr); paramsMap.put( "params" , new String[]{jsonParam.toJSONString()}); ParameterRequest req = new ParameterRequest(request, paramsMap); filterChain.doFilter(req, response); } else { writerError(response, "无效的请求来源" , 500 ); } } @Override public void destroy() { } /** * 筛选 * * @param request * @return */ private boolean isFilter(HttpServletRequest request) { if (OPTIONS.equals(request.getMethod())) { return true ; } if (isInclude(request)) { //如果是属于排除的URL，比如登录，注册，验证码等URL，则直接通行 log.info( "直接通过" ); return true ; } return tokenCheck(request); } /** * 排除不需要过滤的URL * * @param request * @return */ private boolean isInclude(HttpServletRequest request) { String url = request.getRequestURI().substring(request.getContextPath().length()); log.info( "请求url:{}" , url); for (String patternUrl : urlPatterns) { Pattern p = Pattern测试数据pile(patternUrl); Matcher m = p.matcher(url); if (m.find()) { return true ; } } return false ; } /** * 效验token是否有效 * * @param request * @return */ private boolean tokenCheck(HttpServletRequest request) { String authToken = request.getHeader( "accessToken" ); log.info( "请求头中令牌token:{}" , authToken); // ...业务代码 return false ; } /** * 错误写出 * * @param response * @param retEnum * @throws IOException */ private void writerError(HttpServletResponse response, String msg, int code) throws IOException { //验证不通过 response.setCharacterEncoding( "UTF-8" ); response.setContentType( "application/json; charset=utf-8" ); response.setStatus(HttpServletResponse.SC_OK); //将验证不通过的错误返回 ObjectMapper mapper = new ObjectMapper(); Map<String, Object> resultMap = new HashMap<>( 3 ); resultMap.put( "code" , code); resultMap.put( "msg" , msg); resultMap.put( "data" , null ); response.getWriter().write(mapper.writeValueAsString(resultMap)); } /** * web效验签名 * * @param request * @return */ public boolean compareSign(HttpServletRequest request) { JSONObject param = JSONUtil.getJSONParam(request); String sign = JSONUtil.getParamRequired(param, String. class , "sign" ); // ...业务代码 return s.equals(sign); } /** * APP解密参数 * * @param json * @return */ public JSONObject getJsonParam(String json) { JSONObject jsonParam = JSON.parseObject(json); String aos = jsonParam.getString( "aos" ); String params = jsonParam.getString( "params" ); String param = null ; if (jsonParam != null && !StringUtils.isEmpty(aos) && !StringUtils.isEmpty(params)) { String key = RSA.rsaDecrypt(aos, "自定义的私钥" ); if (StringUtils.isBlank(key)) { return null ; } try { param = AES256.decrypt(params, key); } catch (Exception e) { e.printStackTrace(); } if (StringUtils.isBlank(param)) { return null ; } } if (StringUtils.isBlank(param)) { return null ; } return JSONObject.parseObject(param); } } |
思路都在代码中备注了，就是在过滤器中，一层层解析，比如token等，然后再分别解析两种请求的参数，放入params里，其中用到的两个工具类如下
JSONUtil
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import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import org.apache测试数据mons.lang3.StringUtils; import org.springframework.web.bind.MissingServletRequestParameterException; import javax.servlet.http.HttpServletRequest; import java.util.Map; public class JSONUtil { public static JSONObject getJSONParam(HttpServletRequest request){ Map<String, String[]> parameterMap = request.getParameterMap(); JSONObject returnObject = new JSONObject(); for (Map.Entry<String, String[]> entry : parameterMap.entrySet()) { String value = "" ; String[] values = entry.getValue(); if (values != null ){ for (String s : values) { value = s + "," ; } value = value.substring( 0 , value.length() - 1 ); } returnObject.put(entry.getKey(), value); } return returnObject; } public static <T> T getParam(JSONObject param, Class<T> tClass, String key){ if (param == null ) { return null ; } return param.getObject(key, tClass); } public static <T> T getParamRequired(JSONObject param, Class<T> tClass, String key){ if (param == null ) { throw new RuntimeException(getErrMsg(key)); } T object = param.getObject(key, tClass); if (object == null ){ throw new RuntimeException(getErrMsg(key)); } return object; } private static String getErrMsg(String key) { return "参数" + key + "必填" ; } } |
RequestBodyUtil
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import java.io.IOException; import java.io.Reader; import java.io.StringWriter; import java.io.Writer; /** * 解析Body数据 */ public class RequestBodyUtil { private static final int BUFFER_SIZE = 1024 * 8 ; private RequestBodyUtil(){} public static String read(Reader reader) throws IOException { StringWriter writer = new StringWriter(); try { write(reader, writer); return writer.getBuffer().toString(); } finally { writer.close(); } } public static long write(Reader reader, Writer writer) throws IOException { return write(reader, writer, BUFFER_SIZE); } public static long write(Reader reader, Writer writer, int bufferSize) throws IOException { int read; long total = 0 ; char [] buf = new char [BUFFER_SIZE]; while ((read = reader.read(buf)) != - 1 ) { writer.write(buf, 0 , read); total += read; } return total; } } |
最后
注册过滤器我就不说了，SpringBoot注册过滤器方式很多，看如何在控制器中接收参数
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@PostMapping ( "/test" ) public Result test( @RequestParam String params){ System.out.println( "解密后的参数：" + params); return ResponseMsgUtil.success(params); } |
名字只要和过滤器中自定义的Map里的Key对应，就会被拿到参数
Spring boot配置Aop获取controller里的request中的参数及其返回值
示例：
当前url：http://localhost:8080/CarsiLogCenter_new/idpstat.jsp?action=idp.sptopn
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request.getRequestURL() http: //localhost:8080/CarsiLogCenter_new/idpstat.jsp request.getRequestURI() /CarsiLogCenter_new/idpstat.jsp request.getContextPath()/CarsiLogCenter_new request.getServletPath() /idpstat.jsp request.getQueryString() action=idp.sptopn |
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public static String getLastAccessUrl(HttpServletRequest request) { StringBuffer requestURL = request.getRequestURI(); String queryString = request.getQueryString(); if (queryString == null ) { return requestURL.toString(); } return requestURL + "?" + queryString; } |
1、 request.getRequestURL()
返回的是完整的url，包括Http协议，端口号，servlet名字和映射路径，但它不包含请求参数。2、 request.getRequestURI()
得到的是request URL的部分值，并且web容器没有decode过的3、 request.getContextPath()
返回 the context of the request.4、 request.getServletPath()
返回调用servlet的部分url.5、 request.getQueryString()
返回url路径后面的查询字符串
首先在你的Maven的pom文件里加入aop的依赖
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< dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-aop</ artifactId > </ dependency > |
在spring boot里面一切配置都是很简单的，
下面为我所有被请求到的controller加上Aop的功能
看码吧：
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import javax.servlet.http.HttpServletRequest; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Pointcut; import org.springframework.context.annotation.Configuration; import org.springframework.web.context.request.RequestAttributes; import org.springframework.web.context.request.RequestContextHolder; import org.springframework.web.context.request.ServletRequestAttributes; import com.google.gson.Gson; import org.slf4j.Logger; import org.slf4j.LoggerFactory;; @Aspect //定义一个切面 @Configuration public class LogRecordAspect { private static final Logger logger = LoggerFactory.getLogger(UserInterceptor. class ); // 定义切点Pointcut @Pointcut ( "execution(* com.jiaobuchong.web.*Controller.*(..))" ) public void excudeService() { } @Around ( "excudeService()" ) public Object doAround(ProceedingJoinPoint pjp) throws Throwable { RequestAttributes ra = RequestContextHolder.getRequestAttributes(); ServletRequestAttributes sra = (ServletRequestAttributes) ra; HttpServletRequest request = sra.getRequest(); String url = request.getRequestURL().toString(); String method = request.getMethod(); String uri = request.getRequestURI(); String queryString = request.getQueryString(); logger.info( "请求开始, 各个参数, url: {}, method: {}, uri: {}, params: {}" , url, method, uri, queryString); // result的值就是被拦截方法的返回值 Object result = pjp.proceed(); Gson gson = new Gson(); logger.info( "请求结束，controller的返回值是 " + gson.toJson(result)); return result; } } |
只要加上上面这个类，Aop就算配置好了，不信，去访问以下你的Controller试试。对比以前配置aop的方式(xml文件)，现在的配置都到Java代码里来了，@Configuration这个Annotation就是JavaConfig的典型代表，Spring boot在启动时会会自动去加载这些配置，实现相应的配置功能。
以上为个人经验，希望能给大家一个参考，也希望大家多多支持。
原文链接：https://blog.csdn.net/m0_37701381/article/details/103303154
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