Tomcat内存泄漏检测和预防策略

# 使用jcmd命令生成堆转储
jcmd <PID> GC.heap_dump /path/to/heapdump.hprof

public class LeakyClass {
    private static List<Object> objects = new ArrayList<>();

    public void addObject(Object obj) {
        objects.add(obj);
    }

    public void removeObject(Object obj) {
        objects.remove(obj);
    }
}

public class LeakyListener {
    private final Object source;

    public LeakyListener(Object source) {
        this.source = source;
        source.registerListener(this);
    }

    // 确保在适当的时候注销监听器
    public void cleanup() {
        source.unregisterListener(this);
    }
}

import java.lang.ref.SoftReference;

public class SoftReferenceExample {
    private SoftReference<LargeObject> softReference;

    public void createLargeObject() {
        LargeObject obj = new LargeObject();
        softReference = new SoftReference<>(obj);
    }

    public LargeObject getLargeObject() {
        return softReference.get();
    }
}