0
public class TestBean {
private String[] array;
public String[] getArray() {
return array;
}
public void setArray(String[] array) {
this.array = array;
}
}
import java.lang.reflect.InvocationTargetException;
import org.apache.commons.beanutils.BeanUtils;
public class BeanUtilTest {
public static void main(String[] args) {
TestBean bean = new TestBean();
try {
BeanUtils.setProperty(bean, "array[0]", "zero");
} catch (IllegalAccessException | InvocationTargetException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
運行代碼時以下異常越來越而運行時間爪哇 - 異常PropertyUtilsBean.setIndexedProperty
java.lang.NullPointerException
at org.apache.commons.beanutils.PropertyUtilsBean.setIndexedProperty(PropertyUtilsBean.java:1414)
at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:1016)
at org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:313)
at BeanUtilTest.main(BeanUtilTest.java:10)
數組大小會增加。所以我不想要一個固定大小的數組。數組大小應該在運行時定義。