Android okhttp添加数据加密拦截器

水深无声 2022-09-08 03:41 272阅读 0赞

#### 一、需求 ####

既然要对请求体加密，那肯定要知道请求体在哪里，然后才能加密，其实都一样不论是加密url里面的query内容还是加密body体里面的都一样，只要拿到了对应的数据我们想怎么做怎么，有的接口比较奇葩，他需要根据请求体的内容进行签名认证。不论如何我们拿到了请求体当然想怎么样就怎么样

#### 二、代码实现 ####

public class TestInterceptor implements Interceptor { 
        private String newHost = "127.0.0.1";
    
        @Override
        public Response intercept(Chain chain) throws IOException { 
            Request request = chain.request();
            HttpUrl url = request.url();
    
            //http://127.0.0.1/test/upload/img?userName=xiaoming&userPassword=12345
            String scheme = url.scheme();// http https
            String host = url.host();// 127.0.0.1
            String path = url.encodedPath();// /test/upload/img
            String query = url.encodedQuery();// userName=xiaoming&userPassword=12345
    
            StringBuffer sb = new StringBuffer();
            sb.append(scheme).append(newHost).append(path).append("?");
            Set<String> queryList = url.queryParameterNames();
            Iterator<String> iterator = queryList.iterator();
            
            for (int i = 0; i < queryList.size(); i++) { 
                
                String queryName = iterator.next();
                sb.append(queryName).append("=");
                String queryKey = url.queryParameter(queryName);
                //对query的key进行加密
                sb.append(CommonUtils.getMD5(queryKey));
                if (iterator.hasNext()) { 
                    sb.append("&"); 
                }
            }
    
    
            String newUrl = sb.toString();
    
            Request.Builder builder = request.newBuilder()
                    .url(newUrl);
    
            return chain.proceed(builder.build());
        }
    }