如下有一段代码
package com.lm.demo.arthas.controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.ArrayList;
@RestController
@RequestMapping("/test")
public class TestController {
@GetMapping("/test")
public String test() throws InterruptedException {
tst ();
return "ok";
}
void tst () throws InterruptedException {
long i =0;
ArrayList<HeapTest> heapTests = new ArrayList<>();
while (true){
heapTests.add(new HeapTest());
Thread.sleep(100);
System.out.println(++i);
}
}
}
很明显,因为方法不可能执行力完,它的局部变量heapTests是不会释放的,但又在不停的new,它后面的一个个的new肯定也不会释放,最后肯定会OOM。
CMD--》jvisualvm