ReportScheduler addReporter报错UnsupportedOperationException

[wszyquan]

错误再现

将showcase的MetricsManager类作如下修改

ConsoleReporter consoleReporter = new ConsoleReporter();
Slf4jReporter slf4jReporter = new Slf4jReporter();
scheduler = new ReportScheduler(MetricRegistry.INSTANCE,
consoleReporter);

    if (graphiteEnabled) {
        GraphiteReporter graphiteReporter = new GraphiteReporter(
                new InetSocketAddress("localhost", 2003));
        scheduler.addReporter(graphiteReporter);
    }

    scheduler.addReporter(slf4jReporter);
    scheduler.start(10, TimeUnit.SECONDS);

---

添加了一个slf4jReport，运行即报错。

解决办法

1、添加依赖

         <dependency>
        <groupId>com.google.guava</groupId>
        <artifactId>guava</artifactId>
    </dependency>

---

2、将metrics项目的ReportScheduler的构造函数

public ReportScheduler(MetricRegistry metricRegistry, Reporter... reporters) {
this(metricRegistry, Arrays.asList(reporters));
}
修改为
public ReportScheduler(MetricRegistry metricRegistry, Reporter... reporters) {
this(metricRegistry, Lists.newArrayList(reporters));
}

即可

[springside]

不想引入新的依赖，所以用别的笨办法解决。