Spring中的ClassPathXmlApplicationContext源码详解
作者：军伟@
这篇文章主要介绍了Spring中的ClassPathXmlApplicationContext源码详解,ApplicationContext的主要实现类是ClassPathXmlApplicationContext和FileSystemXmlApplicationContext,前者默认从类路径加载配置文件,后者默认从文件系统中装载配置文件,需要的朋友可以参考下
ClassPathXmlApplicationContext源码
ApplicationContext应用上下文体系如下：
在实现类ClassPathXmlApplicationContext中其实并没有多少重要的操作，主要是在构造函数中配置Spring配置文件的路径：
public class DaoOperationMain {
public static void main(String[] args) {
ApplicationContext appCtx = new ClassPathXmlApplicationContext("applicationContext.xml");
}
}具体的applicationContext.xml解析相关的操作都在父类refresh中进行操作。
ClassPathXmlApplicationContext的源码如下：
/**
* 并没有太多具体的操作，主要是初始化构造函数，主要的操作都在父类中
*/
public class ClassPathXmlApplicationContext extends AbstractXmlApplicationContext {
private Resource[] configResources;
public ClassPathXmlApplicationContext() {
}
public ClassPathXmlApplicationContext(ApplicationContext parent) {
super(parent);
}
public ClassPathXmlApplicationContext(String configLocation) throws BeansException {
this(new String[] {configLocation}, true, null);
}
public ClassPathXmlApplicationContext(String... configLocations) throws BeansException {
this(configLocations, true, null);
}
public ClassPathXmlApplicationContext(String[] configLocations, ApplicationContext parent) throws BeansException {
this(configLocations, true, parent);
}
public ClassPathXmlApplicationContext(String[] configLocations, boolean refresh) throws BeansException {
this(configLocations, refresh, null);
}
public ClassPathXmlApplicationContext(String[] configLocations, boolean refresh, ApplicationContext parent)
throws BeansException {
super(parent);
//设置spring的配置文件
setConfigLocations(configLocations);
if (refresh) {
//调用父类的refresh函数，进行一系列初始化
refresh();
}
}
public ClassPathXmlApplicationContext(String path, Class<?> clazz) throws BeansException {
this(new String[] {path}, clazz);
}
public ClassPathXmlApplicationContext(String[] paths, Class<?> clazz) throws BeansException {
this(paths, clazz, null);
}
public ClassPathXmlApplicationContext(String[] paths, Class<?> clazz, ApplicationContext parent)
throws BeansException {
super(parent);
Assert.notNull(paths, "Path array must not be null");
Assert.notNull(clazz, "Class argument must not be null");
this.configResources = new Resource[paths.length];
for (int i = 0; i < paths.length; i++) {
this.configResources[i] = new ClassPathResource(paths[i], clazz);
}
//调用父类的refresh函数，进行一系列初始化
refresh();
}
@Override
protected Resource[] getConfigResources() {
return this.configResources;
}
}到此这篇关于Spring中的ClassPathXmlApplicationContext源码详解的文章就介绍到这了,更多相关ClassPathXmlApplicationContext源码内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！