77 lines
2.7 KiB
Markdown
77 lines
2.7 KiB
Markdown
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```java
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SpringApplication.run(PrimarySources.class, args);
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```
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```java
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new SpringApplication(primarySources)
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setInitializers ApplicationContextInitializer.class
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setListeners ApplicationListener.class
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Class.forName(stackTraceElement.getClassName())
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private static Map<String, List<String>> loadSpringFactories(@Nullable ClassLoader classLoader) {
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MultiValueMap<String, String> result = (MultiValueMap)cache.get(classLoader);
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if (result != null) {
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return result;
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} else {
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try {
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Enumeration<URL> urls = classLoader != null ? classLoader.getResources("META-INF/spring.factories") : ClassLoader.getSystemResources("META-INF/spring.factories");
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LinkedMultiValueMap result = new LinkedMultiValueMap();
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while(urls.hasMoreElements()) {
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URL url = (URL)urls.nextElement();
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UrlResource resource = new UrlResource(url);
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Properties properties = PropertiesLoaderUtils.loadProperties(resource);
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Iterator var6 = properties.entrySet().iterator();
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while(var6.hasNext()) {
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Entry<?, ?> entry = (Entry)var6.next();
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String factoryClassName = ((String)entry.getKey()).trim();
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String[] var9 = StringUtils.commaDelimitedListToStringArray((String)entry.getValue());
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int var10 = var9.length;
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for(int var11 = 0; var11 < var10; ++var11) {
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String factoryName = var9[var11];
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result.add(factoryClassName, factoryName.trim());
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}
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}
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}
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cache.put(classLoader, result);
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return result;
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} catch (IOException var13) {
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throw new IllegalArgumentException("Unable to load factories from location [META-INF/spring.factories]", var13);
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}
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}
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}
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```
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1. 设置资源加载（包含类加载器）
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2. 设置资源primarySources Map
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3. 设置web类型
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4. 设置工厂实例ApplicationContextInitializer，META-INF/spring.factories
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5. 设置监听ApplicationListener
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5. 加载类，创建实例，排序。
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6. 找到main方法的类
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```java
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public ClassLoader getClassLoader() {
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if (this.resourceLoader != null) {
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return this.resourceLoader.getClassLoader();
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}
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return ClassUtils.getDefaultClassLoader();
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}
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```
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```java
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// Run the Spring application, creating and refreshing a new ApplicationContext.
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.run(args)
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```
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```java
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listeners.starting()
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```
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```java
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DefaultApplicationArguments (new SimpleCommandLineArgsParser()).parse(args)
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```
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