From 52532a44ea71ffa733d8f3e2533dbad20cbcad89 Mon Sep 17 00:00:00 2001
From: Yufire <shijingyu@yintatech.com>
Date: Thu, 20 Jul 2023 11:02:47 +0800
Subject: [PATCH] =?UTF-8?q?=E6=88=91=E5=B0=B1=E4=BF=AE=E6=94=B9=E4=B8=80?=
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---
 Java/SpringBeanUpdate.java | 69 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 Java/SpringBeanUpdate.java

diff --git a/Java/SpringBeanUpdate.java b/Java/SpringBeanUpdate.java
new file mode 100644
index 0000000..cd83907
--- /dev/null
+++ b/Java/SpringBeanUpdate.java
@@ -0,0 +1,69 @@
+import cn.hutool.core.util.RandomUtil;
+import org.apache.ibatis.reflection.MetaObject;
+import org.apache.ibatis.reflection.SystemMetaObject;
+import org.springframework.beans.BeansException;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author Yufire
+ * @date 2023/7/20 10:51
+ * 修改一下我那可爱的Bean
+ */
+@Component
+public class SpringBeanUpdate implements ApplicationContextAware {
+
+
+    private static final String MY_BEAN_NAME = "MyBean.java";
+
+    /**
+     * 我真的只是想修改一下我自己的bean里边的属性
+     *
+     * @param applicationContext spring上下文对象
+     * @throws BeansException 抛异常？不可能的
+     */
+    @Override
+    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+        String[] beanNameList = applicationContext.getBeanDefinitionNames();
+        for (String beanName : beanNameList) {
+            // 判断一下bean名称是不是我的那个bean，很合理吧~
+            if (!beanName.equals(MY_BEAN_NAME)) {
+                // 获取一下我的bean
+                Object beanInstance = applicationContext.getBean(beanName);
+                // 获取一下反射操作对象，我就喜欢用反射，强转什么的不存在
+                MetaObject beanMetaObject = SystemMetaObject.forObject(beanInstance);
+                // 循环所有的setter方法
+                for (String setterName : beanMetaObject.getSetterNames()) {
+                    // 给我的bean覆一下值，随机值，我喜欢
+                    beanMetaObject.setValue(setterName, getRandomValue(beanMetaObject.getSetterType(setterName)));
+                }
+                // 打日志？不可能的
+                // log.out不了("哈哈哈")
+            }
+        }
+    }
+
+    /**
+     * 获取一个随机值
+     *
+     * @param type 类型
+     * @return 随机值
+     */
+    public Object getRandomValue(Class<?> type) {
+        if (type.equals(String.class)) {
+            return RandomUtil.randomString(15);
+        } else if (type.equals(Integer.class)) {
+            return RandomUtil.randomInt(100);
+        } else if (type.equals(Long.class)) {
+            return RandomUtil.randomLong(100);
+        } else if (type.equals(Double.class)) {
+            return RandomUtil.randomDouble(100);
+        } else if (type.equals(Float.class)) {
+            return RandomUtil.randomDouble(100);
+        } else {
+            return null;
+        }
+    }
+
+}
-- 
Gitee