相关疑难解决方法(0)

我想使用反射来设置私有字段的值以进行单元测试.

问题是,该字段是静态的.

这是我正在做的工作:

/**
   * Use to set the value of a field you don't have access to, using reflection, for unit testing.
   * 
   * Returns true/false for success/failure.
   * 
   * @param p_instance an object to set a private field on
   * @param p_fieldName the name of the field to set
   * @param p_fieldValue the value to set the field to
   * @return true/false for success/failure
   */
  public static boolean setPrivateField(final Object p_instance, final String p_fieldName, final Object p_fieldValue) { …

我有一个Java类,有很多Fields.

我想循环al alhe字段并为那些为null的那些做一些事情.

例如,如果我的班级是:

public class ClassWithStuff {
    public int inty;
    public stringy;         
    public Stuff;
    //many more fields
}

In another location, I'd make a ClassWithStuff object and I would like to go though all the fields in the class. Kind of like this:

for (int i = 0; i < ClassWithStuff.getFields().size(); i++) {
      //do stuff with each one
}

Is there any way for me to achieve this?

我有一个静态类(Foo)和一个主类(Main)

请参阅Main.java:

public class Main {

    public static void main(String[] args) {
        System.out.println(Foo.i); // 0
        Foo.i++;
        System.out.println(Foo.i); // 1
        // restart Foo here 
        System.out.println(Foo.i); // 1 again...I need 0
    }

}

见Foo.java:

public class Foo {

    public static int i = 0;

}

有没有办法重启或重置静态类？

注意:我需要这个,因为我正在使用jUnit测试静态类,我需要在第二次测试之前清理参数.

编辑

几乎解决方案:

使用StanMax答案,我可以这样:

Main.java

public class Main {

    public static void main(String[] args) throws Exception {
        test();
        test();
    }

    public static void test() throws Exception {

        System.out.println("\ntest()");

        MyClassLoader myClassLoader = new MyClassLoader();
        Class<?> fooClass = …