如何在RestController类中模拟私有变量

import java.lang.reflect.Field;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class MyController {
    
    private String privateVariable = "私有变量的初始值";
    
    @GetMapping("/private-variable")
    public String getPrivateVariable() throws NoSuchFieldException, IllegalAccessException {
        // 使用反射获取私有变量
        Field field = MyController.class.getDeclaredField("privateVariable");
        field.setAccessible(true);
        String value = (String) field.get(this);
        
        return value;
    }
    
    @GetMapping("/change-private-variable")
    public String changePrivateVariable() throws NoSuchFieldException, IllegalAccessException {
        // 使用反射修改私有变量的值
        Field field = MyController.class.getDeclaredField("privateVariable");
        field.setAccessible(true);
        field.set(this, "修改后的私有变量值");
        
        return "私有变量已修改";
    }
}