javalite Activeweb 如何在 HttpSupportFilter 中获取用于记录目的的响应正文字符串

Question

如何在 HttpSupportFilter 中获取用于记录目的的 responseBody 字符串？

常见的日志解决方案是创建包装器并将其插入标准过滤器

如果我们使用标准过滤器，我们将无法访问 activejdbc 数据库连接层

我尝试应用包装器但它不起作用，字符串仍然是空的

public class HTTPLogFilter extends HttpSupportFilter {

    private static ThreadLocal<Long> start = new ThreadLocal<>();
    
    @Override
    public void before() {
        start.set(System.currentTimeMillis());
    }

    @Override
    public void after() {

        if(Configuration.HTTPLOGS_ENABLE) {

            Registry.instance().getStatisticsQueue().enqueue(
                    new QueryExecutionEvent(getRoute().getController().getClass().getName() +
                            "#" + getRoute().getActionName() + ":" + method(), System.currentTimeMillis() - start.get()));

            HttpLog httpLog = new HttpLog();

            String username ="TEST";

            Map request = new HashMap<String, Object>();
            request.put("requestUrl", url());
            request.put("contextPath", context());
            request.put("uriFullPath", uri());
            request.put("uriPath", path());
            request.put("method", method());
            request.put("requestHeaders", headers());
            request.put("requestParams", params());
            request.put("queryString", queryString());
            request.put("requestBody", getRequestString());

            Map response = new HashMap<String, Object>();
            response.put("responseHeaders", getResponseHeaders());
            try {
                // BUG ! this responseBody still empty
                response.put("responseBody", getHttpServletResponse().getWriter().toString());
            } catch (IOException e) {
                e.printStackTrace();
            }

            httpLog.setCreatedby(username);
            httpLog.setCreateddt(new Date());
            httpLog.setUsername(username);
            String remoteAddr = ipForwardedFor() != null ? ipForwardedFor() : remoteAddress();
            httpLog.setIpaddress(remoteAddr );
            httpLog.setUseragent(userAgent());
            httpLog.setControllername(getRoute().getController().getClass().getName() + "." + getRoute().getActionName());
            httpLog.setHttpmethod(method());
            httpLog.setHttpexceptions("");
            httpLog.setExecutiondt(new Date(start.get()));
            httpLog.setExecutiondur(System.currentTimeMillis() - start.get());
            httpLog.setHttpurl(url());
            httpLog.setHttprequest(JsonHelper.toJson(request));
            httpLog.setHttpresponse(JsonHelper.toJson(response));
            httpLog.setHttpstatuscode(getHttpServletResponse().getStatus());
            httpLog.saveIt();
        }
    }

}

Answer 1

总的来说，您的方向是正确的。据我了解，HttpLog 是一个模型，您想将请求值存储到数据库中，对吗？

你写：

如果我们使用标准过滤器，我们将无法访问 activejdbc 数据库连接层

因此，ActiveWeb 过滤器有顺序，记录在此处：https://javalite.io/controller_filters#filter-ordering

这意味着如果你想要在HTTPLogFilter中可用的数据库连接，你必须在HTTPLogFilter之前注册DBConnectionFilter，例如：

public class AppControllerConfig extends AbstractControllerConfig {
    public void init(AppContext appContext) {
        add(new DBConnectionFilter(), new HTTPLogFilter());
    }
}

这样，DBConnectionFilter.before() 将在 HTTPLogFilter.before() 之前被调用，并相应地打开一个数据库连接。

旁注：您将很快填满数据库，建议将所有这些数据简单地记录到日志文件中，并使用 Splunk 或 Graylog 等日志分析器。

javalite Activeweb 如何在 HttpSupportFilter 中获取用于记录目的的响应正文字符串

javalite Activeweb how to get response body string for logging purpose in HttpSupportFilter

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