带有类类型的 Java 反射 getDeclaredMethod()
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Java Reflection getDeclaredMethod() with Class Types
提问by Nate
I'm trying to understand Java reflecton and am encountering difficulties when working with non-Integer setter methods.
我正在尝试了解 Java 反射，并且在使用非整数 setter 方法时遇到了困难。
As an example, how can I resolve the "getDeclaredMethod()" call below?
例如，如何解决下面的“getDeclaredMethod()”调用？
import java.lang.reflect.*;
class Target {
String value;
public Target() { this.value = new String("."); }
public void setValue(String value) { this.value = value; }
public String getValue() { return this.value; }
}
class ReflectionTest {
public static void main(String args[]) {
try {
Class myTarget = Class.forName("Target");
Method myMethod;
myMethod = myTarget.getDeclaredMethod("getValue"); // Works!
System.out.println("Method Name: " + myMethod.toString());
Class params[] = new Class[1];
//params[0] = String.TYPE; // ?? What is the appropriate Class TYPE?
myMethod = myTarget.getDeclaredMethod("setValue", params); // ? Help ?
System.out.println("Method Name: " + myMethod.toString());
} catch (Exception e) {
System.out.println("ERROR");
}
}
}
采纳答案by coobird
params[0] = String.class;
Using classon Stringwill return the Class<?>that is associated with the Stringclass.
使用classonString将返回Class<?>与String类关联的。
