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問:如何能夠獲得遞增的指數 - 即,在RouteBuilder循環()過程中使用 - 這樣反覆呼籲「直接:thingC」,將「過程」後續元素(在ArrayList中) ?如何獲得可增量索引 - 即在RouteBuilder的循環()中使用?
這裏是配置()方法...
private final org.apache.camel.Processor proc1 = new Processor1();
private static final List<String> searchList = Arrays.asList("AA", "BB");
private static final int z = searchList.size();
private static int x = 0;
//***idea is to both elements using an index during the "loop".... Not working....
@Override
public void configure() throws Exception {
from("timer://foo?fixedRate=true&period=" + 5000) //5 seconds...
.to("direct:thingB");
from("direct:thingB")
.log("---------------------- (from(\"direct:thingB\"))... ----------x=" + x)
.loop(searchList.size()).to("direct:thingC");
from("direct:thingC")
.log("---------------------- (from(\"direct:thingC\"))... ----------searchList.get(" + x++ + ")=" + searchList.get(x));
}
日誌輸出如下所示(指數不遞增:總是選擇相同的元件)... :-(
2017-09-01 16:13:19,142 | INFO | 43 - timer://foo | route15 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingB"))... ----------x=0
2017-09-01 16:13:19,142 | INFO | 43 - timer://foo | route16 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingC"))... ----------searchList.get(0)=BB
2017-09-01 16:13:19,143 | INFO | 43 - timer://foo | route16 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingC"))... ----------searchList.get(0)=BB
2017-09-01 16:13:24,141 | INFO | 43 - timer://foo | route15 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingB"))... ----------x=0
2017-09-01 16:13:24,141 | INFO | 43 - timer://foo | route16 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingC"))... ----------searchList.get(0)=BB
2017-09-01 16:13:24,142 | INFO | 43 - timer://foo | route16 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingC"))... ----------searchList.get(0)=BB
我們的目標是 - 有 - 這樣的輸出......
2017-09-01 16:13:19,142 | INFO | 43 - timer://foo | route15 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingB"))... ----------x=0
2017-09-01 16:13:19,142 | INFO | 43 - timer://foo | route16 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingC"))... ----------searchList.get(0)=AA
2017-09-01 16:13:19,143 | INFO | 43 - timer://foo | route16 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingC"))... ----------searchList.get(1)=BB
2017-09-01 16:13:24,141 | INFO | 43 - timer://foo | route15 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingB"))... ----------x=0
2017-09-01 16:13:24,141 | INFO | 43 - timer://foo | route16 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingC"))... ----------searchList.get(0)=AA
2017-09-01 16:13:24,142 | INFO | 43 - timer://foo | route16 | 232 - org.apache.camel.camel-core - 2.17.0.redhat-630187 | ---------------------- (from("direct:thingC"))... ----------searchList.get(1)=BB
解決方案:按亞歷山德羅的建議,下面
private final String s = "AA,BB";
@Override
public void configure() throws Exception {
from("timer://foo?fixedRate=true&period=" + 5000) //5 seconds...
.setBody(constant(s))
.to("direct:thingB")
from("direct:thingB")
.split().tokenize(",")
.to("direct:thingC");
from("direct:thingC")
.log("body=" + body()); //note: this value looks like simple{AA}
}
謝謝你亞歷山德羅。我改變了使用上面的「split()」函數。順便說一句,我將如何從「簡單的{AA}」表達式中提取「AA」字符串? thx,再次! – sairn