com.jfplugin.xsql.kit.ObjectKit Maven / Gradle / Ivy
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package com.jfplugin.xsql.kit;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import com.jfplugin.xsql.exception.NoPropertyException;
public class ObjectKit {
public static Object getProperty(Object bean, String key) {
StringTokenizer tokenizer = new StringTokenizer(key, ".", false);
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
if(bean instanceof Map){
bean = ((Map) bean).get(token);
}else if (bean instanceof List){
try {
bean = ((List) bean).get(Integer.parseInt(key));
} catch (Exception e) {
throw new NoPropertyException(bean.getClass()+"中"+key+"属性不存在", e);
}
}else if (bean.getClass().isArray()){
try {
bean = getArrayItem(bean,Integer.parseInt(key));
} catch (Exception e) {
throw new NoPropertyException(bean.getClass()+"中"+key+"属性不存在", e);
}
}else{
try {
bean = Reflect.on(bean).field(token).get();
} catch (Exception e1) {
try {
bean = Reflect.on(bean).call("get",token).get();
} catch (Exception e2) {
throw new NoPropertyException(bean.getClass()+"中"+key+"属性不存在", e2);
}
}
}
}
return bean;
}
/**
* 获取数组中的一条
* @param o
* @param index
* @return
*/
private static Object getArrayItem(Object o , int index){
Class type = o.getClass();
if(type.getComponentType().isPrimitive()){
if (type == int[].class)
{
return ((int[]) o)[index];
}
else if (type == long[].class)
{
return ((long[]) o)[index];
}
else if (type == short[].class)
{
return ((short[]) o)[index];
}
else if (type == double[].class)
{
return ((double[]) o)[index];
}
else if (type == float[].class)
{
return ((float[]) o)[index];
}
else if (type == char[].class)
{
return ((char[]) o)[index];
}
else if (type == byte[].class)
{
return ((byte[]) o)[index];
}
else if (type == boolean[].class)
{
return ((boolean[]) o)[index];
}
else
{
throw new RuntimeException("不支持数组");
}
}else{
return ((Object[]) o)[index];
}
}
}