package com.matrix.component.wechat.externalInterface.common;
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import com.thoughtworks.xstream.XStream;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.lang.reflect.Field;
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import java.util.Map;
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/**
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* User: rizenguo
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* Date: 2014/10/23
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* Time: 14:59
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*/
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public class Util {
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//打log用
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/**
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* 通过反射的方式遍历对象的属性和属性值，方便调试
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*
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* @param o 要遍历的对象
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* @throws Exception
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*/
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public static void reflect(Object o) throws Exception {
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Class<? extends Object> cls = o.getClass();
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Field[] fields = cls.getDeclaredFields();
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for (int i = 0; i < fields.length; i++) {
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Field f = fields[i];
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f.setAccessible(true);
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Util.log(f.getName() + " -> " + f.get(o));
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}
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}
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public static byte[] readInput(InputStream in) throws IOException {
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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int len = 0;
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byte[] buffer = new byte[1024];
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while ((len = in.read(buffer)) > 0) {
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out.write(buffer, 0, len);
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}
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out.close();
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in.close();
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return out.toByteArray();
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}
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public static String inputStreamToString(InputStream is) throws IOException {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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int i;
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while ((i = is.read()) != -1) {
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baos.write(i);
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}
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return baos.toString();
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}
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public static InputStream getStringStream(String sInputString) {
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ByteArrayInputStream tInputStringStream = null;
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if (sInputString != null && !sInputString.trim().equals("")) {
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tInputStringStream = new ByteArrayInputStream(sInputString.getBytes());
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}
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return tInputStringStream;
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}
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public static Object getObjectFromXML(String xml, Class<?> tClass) {
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//将从API返回的XML数据映射到Java对象
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XStream xStreamForResponseData = new XStream();
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xStreamForResponseData.alias("xml", tClass);
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xStreamForResponseData.ignoreUnknownElements();//暂时忽略掉一些新增的字段
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return xStreamForResponseData.fromXML(xml);
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}
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public static String getStringFromMap(Map<String, Object> map, String key, String defaultValue) {
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if (key == "" || key == null) {
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return defaultValue;
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}
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String result = (String) map.get(key);
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if (result == null) {
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return defaultValue;
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} else {
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return result;
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}
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}
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public static int getIntFromMap(Map<String, Object> map, String key) {
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if (key == "" || key == null) {
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return 0;
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}
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if (map.get(key) == null) {
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return 0;
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}
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return Integer.parseInt((String) map.get(key));
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}
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/**
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* 打log接口
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* @param log 要打印的log字符串
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* @return 返回log
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*/
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public static String log(Object log){
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System.out.println(log.toString());
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return log.toString();
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}
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/**
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* 读取本地的xml数据，一般用来自测用
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* @param localPath 本地xml文件路径
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* @return 读到的xml字符串
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*/
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public static String getLocalXMLString(String localPath) throws IOException {
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return Util.inputStreamToString(Util.class.getResourceAsStream(localPath));
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}
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}
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