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https://github.com/Snailclimb/JavaGuide
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Merge branch 'main' into fix-typo-reflection
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commit
a27ad3df82
@ -307,7 +307,7 @@ module.exports = config({
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},
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"api-gateway", "distributed-id",
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{
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title: "rpc", prefix: "rpc/",
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title: "RPC", prefix: "rpc/",
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children: ["dubbo", "why-use-rpc"]
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},
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"distributed-transaction",
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@ -71,7 +71,7 @@ Class alunbarClass = TargetObject.class;
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但是我们一般是不知道具体类的,基本都是通过遍历包下面的类来获取 Class 对象,通过此方式获取 Class 对象不会进行初始化
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**2.通过 `Class.forName()`传入类的路径获取:**
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**2. 通过 `Class.forName()`传入类的全路径获取:**
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```java
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Class alunbarClass1 = Class.forName("cn.javaguide.TargetObject");
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@ -90,7 +90,7 @@ Class alunbarClass2 = o.getClass();
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Class clazz = ClassLoader.loadClass("cn.javaguide.TargetObject");
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```
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通过类加载器获取 Class 对象不会进行初始化,意味着不进行包括初始化等一系列步骤,静态块和静态对象不会得到执行
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通过类加载器获取 Class 对象不会进行初始化,意味着不进行包括初始化等一系列步骤,静态代码块和静态对象不会得到执行
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### 反射的一些基本操作
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@ -130,15 +130,16 @@ public class Main {
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/**
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* 获取 TargetObject 类的 Class 对象并且创建 TargetObject 类实例
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*/
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Class<?> targetClass = Class.forName("cn.javaguide.TargetObject");
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TargetObject targetObject = (TargetObject) targetClass.newInstance();
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Class<?> tagetClass = Class.forName("cn.javaguide.TargetObject");
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TargetObject targetObject = (TargetObject) tagetClass.newInstance();
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/**
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* 获取所有类中所有定义的方法
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* 获取 TargetObject 类中定义的所有方法
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*/
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Method[] methods = targetClass.getDeclaredMethods();
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for (Method method : methods) {
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System.out.println(method.getName());
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}
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/**
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* 获取指定方法并调用
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*/
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@ -146,6 +147,7 @@ public class Main {
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String.class);
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publicMethod.invoke(targetObject, "JavaGuide");
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/**
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* 获取指定参数并对参数进行修改
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*/
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@ -153,6 +155,7 @@ public class Main {
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//为了对类中的参数进行修改我们取消安全检查
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field.setAccessible(true);
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field.set(targetObject, "JavaGuide");
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/**
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* 调用 private 方法
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*/
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