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HelloController.java
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HelloController.java
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package com.monitoring.azuremonitor;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import java.util.Arrays;
import java.util.List;
@Controller
public class HelloController {
private static final Logger logger = LogManager.getLogger(HelloController.class);
private List<Integer> num = Arrays.asList(1, 2, 3, 4, 5);
@GetMapping("/")
public String main(Model model) {
// pre-java 8
if (logger.isDebugEnabled()) {
logger.debug("Hello from Log4j 2 - num : {}", num);
}
// java 8 lambda, no need to check log level
logger.debug("Hello from Log4j2: printing a debug message");
logger.info("Hello from Log4j2: printing an info message");
logger.error("Hello from Log4j2:printing an error message");
model.addAttribute("tasks", num);
return "index"; //view name should match the static template in resources/static folder
}
@GetMapping("/greeting")
public String greeting(@RequestParam(name="name", required=false, defaultValue="World") String name, Model model) {
model.addAttribute("name", name);
return "greeting";
}
}