java使用反射机制根据属性名获取object对象指定属性的值

主要讲到把字符串zh_cn转成java驼峰标识的属性，根据指定属性获取传入object对象的zhCn属性的值，关联java反射机制的点用到了获取共有属性和私有属性的区别，getDeclaredField、setAccessible可访问、languageFiled.get(obj);取值方法

package com.cn.internation;

import java.lang.reflect.Field;

public class TestObj {

public static void main(String[] args) {
SidCodeName t = new SidCodeName();
t.setZhCn("中国");
String language = "zh_cn";
int strIndex = language.indexOf("_");
if(strIndex>0){
String strLan = language.substring(0, strIndex);
String endLan = language.substring(strIndex+1);
endLan = endLan.substring(0, 1).toUpperCase() + endLan.substring(1);
language = strLan + endLan;
}

String values = getValues(language,t);
System.out.println(language + "--------"+values);
}

public static String  getValues(String language,Object  obj) {
Object returnStr=null;
Field languageFiled;
try {
languageFiled = obj.getClass().getDeclaredField(language);
languageFiled.setAccessible(true);
returnStr =  languageFiled.get(obj);
 
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
}catch (IllegalAccessException e) {
e.printStackTrace();
}catch (IllegalArgumentException e) {
e.printStackTrace();
}
return  returnStr==null?"":returnStr.toString();
}
}