java 以逗号分隔的格式写入输出

Question

如何以逗号分隔格式编写以下输出。请帮忙。

logger.info("total count of ReportGen requests with size <100kB: "+countlt200);
logger.info("# of Non-ReportGEN Requests: "+countNON);
logger.info("total response time of ReportGen requests with size >=100kB: "+gt200ReportGen);
logger.info("total response time of ReportGen requests with size <100kB: "+lt200ReportGen);
logger.info("total response time of all non ReportGen requests: "+nonReportResTime);
logger.info("total size of ReportGen requests with size <100kB: "+lt200ResTime);
logger.info("total size of ReportGen requests with size >=100kB: "+gt200ResTime);
logger.info("total size of all non ReportGen requests: "+nonReportGenSize);

Answer 1

如果我猜对了，您只想生成一个输出，以逗号分隔。

如果您使用的是 Java 8，则可以使用 String.join() 方法(请参阅 other post)。

或者您可以使用StringBuilder或只是连接。这是一个带有 StringBuilder 的示例:

StringBuilder stringBuilder = new StringBuilder();

stringBuilder.append("total count of ReportGen requests with size <100kB: "+ countlt200);
stringBuilder.append(", # of Non-ReportGEN Requests: "+countNON);
stringBuilder.append(", total response time of ReportGen requests with size >=100kB: "+gt200ReportGen);

// or if you want it more readable for you 
stringBuilder.append("something..something");
stringBuilder.append(",");
stringBuilder.append("something..something");
stringBuilder.append(",");

// aso

logger.info(stringBuilder.toString());