Question

我使用Spring Boot并且在bean实例化时遇到问题（他们创建了两次）。

如何在OQL查询中从bean引用中找到对ApplicationContext的引用？换句话说，找出给定bean的上下文。

PS VisualVM中的基本故障排除查询：

heap.objects("org.springframework.context.support.AbstractApplicationContext")
heap.objects("org.springframework.core.io.DefaultResourceLoader")

Answer 1

按ApplicationContext ::

的bean名称查找bean实例

map(heap.objects("org.springframework.context.support.AbstractApplicationContext"), function(it) {
  var fact = it.beanFactory;
  var tbl = fact.singletonObjects.table;
  var beans = map(filter(tbl, "it && /Step$/.test(it.key)"), "{key: it.key, val: it.val}");
  return {ctx: it, beans: beans};
})

按ApplicationContext ::

的类名查找bean实例

map(heap.objects("org.springframework.context.support.AbstractApplicationContext"), function(it) {
  var fact = it.beanFactory;
  var tbl = fact.singletonObjects.table;
  var beans = map(filter(tbl, "it && /^com.bigbrother/.test(classof(it.val).name)"), "{key: it.key, val: it.val}");
  return {ctx: it, beans: beans};
})

如果Spring更改了底层实现，则应调整这些查询。寻找字段：

heap.objects("org.springframework.context.support.AbstractApplicationContext")

OQL查询查找抱着特定bean的Spring ApplicationContext

1 个答案: