Android okhttp添加数据加密拦截器

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());
    }
}