在java的实际开发过程中,我们可能常常需要使用到init method和destroy method,比如初始化一个对象(bean)后立即初始化(加载)一些数据,在销毁一个对象之前进行垃圾回收等等. 周末对这两个方法进行了一点学习和整理,倒也不是专门为了这两个方法,而是在巩固spring相关知识的时候提到了,然后感觉自己并不是很熟悉这个,便好好的了解一下. 根据特意的去了解后,发现实际上可以有三种方式来实现init method和destroy method. 要用这两个方法,自然先要知道这两…

In OpenCv, it only provide the function fitEllipse to fit Ellipse, but doesn't provide function to fit circle, so i read some paper, and write a function to do it. The paper it refer to is "A Few Methods for Fitting Circles to Data". Also when t…

LINQ to Entities works by translating LINQ queries to SQL queries, then executing the resulting query on the database and converting the result back to application entities. Because of this crossover of two languages, it will only work when SQL-compa…

  o.apache.coyote.http11.Http11Processor : Error parsing HTTP request header Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level. java.lang.IllegalArgumentException: Invalid character found in method name. HTTP metho…

问题背景 关于SpringBoot应用挂了很久之后,会发生Invalid character found in method name. HTTP method names must be tokens的问题. java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens at org.apache.coyote.http11.Http11I…

前情提要在第三天时,我们解说了如何在class里用include与extend,去使用module的method. Include is for adding methods to an instance of a class.Extend is for adding class methods.(出处)…Also,it is sometimes ok to use“include”to add both instance and class methods.#这句话比较进阶,之后再研究:)并透…

解决:Invalid character found in method name. HTTP method names must be tokens   阿里云上弄了一个tomcat,经常半夜发送崩溃,查看日志发现这个东西,查阅资料发现是Tomcat的header缓冲区大小不够,只需要在server.xml中增加maxHttpHeaderSize字段即可: <Connector port="8080" executor="tomcatThreadPool"…

首先看一下以下示例.(Python 2.7) #!/usr/bin/env python # -*- coding: utf-8 -*- class C(object): def foo(self): pass c = C() print 'C.foo id:', id(C.foo), type(C.foo) print 'c.foo id:', id(c.foo), type(c.foo) a = C.foo b = c.foo print 'a = C.foo id:', id(a), ty…

静态方法(Static Method): 一种简单函数,符合以下要求: 1.嵌套在类中. 2.没有self参数. 特点: 1.类调用.实例调用,静态方法都不会接受自动的self参数. 2.会记录所有实例的信息,而不是为实例提供行为. 简单说staticmethod 无法访问类属性.实例属性,相当于一个相对独立的方法,跟类其实没什么关系,换个角度来讲,其实就是放在一个类的作用域里的函数而已. #!python2 #-*- coding:utf-8 -*- class A: v1="class ar…

在使用Postman请求后台时Postman出现 开发工具控制台报 信息: Error parsing HTTP request header Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level. java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method nam…