Spring Bean Reload Problem Resolution

Background:

1, Tomcat project start-up is relatively slow, will lead to a long period of time can not provide services to the outside.

2, the number of servers is more, the update of one operation will take a long time.

Describe:

Make adjustments to the system framework, turn frequently updated features into spring jar packages, and place them on a Web site, and then the system deployed on Tomcat automatically requests the latest spring jar packages from the Web site.

Note: This is not implemented with Mbean, given the performance of the system.

Implementing Critical Code:

1, JAR Package resolution

Myclassloader = new URLClassLoader (new url[] {url},context.getclassloader ());

Thread.CurrentThread (). Setcontextclassloader (Myclassloader);

2. Use the new JAR package

Defaultlistablebeanfactory defaultlistablebeanfactory = (defaultlistablebeanfactory) Context.getautowirecapablebeanfactory ();

Defaultlistablebeanfactory.setbeanclassloader (Myclassloader);

3, the Bean loaded initialization

Simplebeandefinitionregistry Registry = new Simplebeandefinitionregistry ();

Xmlbeandefinitionreaderreader =new Xmlbeandefinitionreader ((beandefinitionregistry) registry);

Reader.loadbeandefinitions (R);

4. Bean Update

String [] beannames = Registry.getbeandefinitionnames ();

for (String n:beannames) {

Defaultlistablebeanfactory.registerbeandefinition (N,registry.getbeandefinition (n));

}