xg-v1.0

ruoyi-oa/src/main/java/com/ruoyi/oa/config/ContextUtil.java

@@ -0,0 +1,61 @@
+package com.ruoyi.oa.config;
+
+import org.springframework.beans.BeansException;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ContextUtil implements ApplicationContextAware {
+
+    /**
+     * 上下文
+     */
+    private static ApplicationContext applicationContext;
+
+    /**
+     * 设置上下文
+     * @param applicationContext 上下文实例
+     * @throws BeansException Bean异常
+     */
+    @Override
+    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+        ContextUtil.applicationContext = applicationContext;
+    }
+
+
+
+    /**
+     * 获取上下文
+     * @return
+     */
+    public static ApplicationContext getContext() {
+        return ContextUtil.applicationContext;
+    }
+
+    /**
+     * 从静态变量applicationContext中取得Bean, 自动转型为所赋值对象的类型.
+     */
+    @SuppressWarnings("all")
+    public static <T> T getBean(String name) {
+        assertContextInjected();
+        return (T) applicationContext.getBean(name);
+    }
+
+    /**
+     * 从静态变量applicationContext中取得Bean, 自动转型为所赋值对象的类型.
+     */
+    public static <T> T getBean(Class<T> requiredType) {
+        assertContextInjected();
+        return applicationContext.getBean(requiredType);
+    }
+
+    /**
+     * 检查ApplicationContext不为空.
+     */
+    private static void assertContextInjected() {
+        if (applicationContext == null) {
+            throw new IllegalStateException("applicationContext属性未注入");
+        }
+    }
+}