在Jetty 10中使用自定义日志时，自定义属性登录到新行

Question

package net.codejava.javaee;

import java.io.IOException;

import org.eclipse.jetty.server.CustomRequestLog;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.Response;

public class MyJettyLogger extends CustomRequestLog
{
    private Request request;
    @Override
    public void log(Request request, Response response)
    {
        this.request = request;
        request.getMethod();
        Writer writerObj = getWriter();
        String logString = setCustomAttributesToLog();
        super.log(request, response);
        try {
            writerObj.write(logString);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    public MyJettyLogger(Writer writer, String logStr)
    {
        super(writer, logStr);
    }

    private String setCustomAttributesToLog(){

        StringBuilder logBuffer = new StringBuilder("");
        
        String userId="1234";
        String username = "Ashish";
        String lastName ="Goyanka";
        String uri = request.getRequestURI();
        String requestMethod = request.getMethod();
        
        logBuffer.append(" ");
        logBuffer.append(userId);
        logBuffer.append(" ");
        logBuffer.append(username);
        logBuffer.append(" ");
        logBuffer.append(lastName);
        logBuffer.append(" ");
        logBuffer.append(uri);
        logBuffer.append(" ");
        logBuffer.append(requestMethod);

        return logBuffer.toString() ;
    }

}

[0:0:0:0:0:0:0:1]--[31/Aug/2021:11:53:25+0000]“Get/MyFirstServlet444/index.jsp HTTP/1.1”200 481“-”Mozilla/5.0（Windows NT 10.0；Win64；x64)AppleWebKit/537.36（KHTML,like Gecko）Chrome/92.0.4515.159 Safari/537.36“

1234 Ashish Goyanka/myFirstServlet444/index.jsp GET

我只想让他们在请求后打印在同一行。我们有什么办法做吗？

Answer 1

您首先调用下面的命令，这将很好地格式化请求/响应，并将其记录为新行。

super.log(request, response);

公共无效日志（请求请求，响应响应）

将请求和响应信息写入输出流。

log

public void log​(Request request, Response response)

Writes the request and response information to the output stream.

Specified by:
    log in interface RequestLog
Parameters:
    request - The request to log.
    response - The response to log. Note that for some requests the response instance may not have been fully populated (Eg 400 bad

 writerObj.write("logStringThatHasRequestAndResponseInformation here");