计算机科学 ›› 2014, Vol. 41 ›› Issue (11): 141-145.doi: 10.11896/j.issn.1002-137X.2014.11.028
李海骋,曹春,吕军,陶先平
LI Hai-cheng,CAO Chun,LV Jun and TAO Xian-ping
摘要： 热部署机制是主流应用服务器的典型功能之一。但是目前的应用服务器仅仅支持独立应用的热部署,并不能满足具有依赖注入的复杂企业级应用在线更新的需求。如果在线更新部分模块,会出现程序调用失效的问题,并会导致整个应用平台的失效。为了解决这个问题,介绍一种支持依赖修复的热部署技术。 在首次部署应用的各模块时,用该技术建立模块之间的依赖关系。而在其更新时,通过查找依赖关系,找出受到更新影响的模块,修复依赖并进行局部的热部署,避免重启应用服务器的代价。最后通过实验表明,该热部署技术可以保证依赖注入下的应用正确性；在实际工程应用的场景下,该技术也能够大幅度提升应用服务器的性能和运行效率。
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