com.github.binarywang.wxpay.bean.result.BaseWxPayResult Maven / Gradle / Ivy
package com.github.binarywang.wxpay.bean.result;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.Serializable;
import java.math.BigDecimal;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import com.github.binarywang.wxpay.exception.WxPayException;
import com.github.binarywang.wxpay.service.WxPayService;
import com.github.binarywang.wxpay.util.SignUtils;
import com.google.common.base.Joiner;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.annotations.XStreamAlias;
import lombok.Data;
import me.chanjar.weixin.common.util.xml.XStreamInitializer;
/**
*
* 微信支付结果共用属性类.
* Created by Binary Wang on 2016-10-24.
*
*
* @author Binary Wang
*/
@Data
public abstract class BaseWxPayResult implements Serializable {
/**
* 返回状态码.
*/
@XStreamAlias("return_code")
protected String returnCode;
/**
* 返回信息.
*/
@XStreamAlias("return_msg")
protected String returnMsg;
//当return_code为SUCCESS的时候，还会包括以下字段：
/**
* 业务结果.
*/
@XStreamAlias("result_code")
private String resultCode;
/**
* 错误代码.
*/
@XStreamAlias("err_code")
private String errCode;
/**
* 错误代码描述.
*/
@XStreamAlias("err_code_des")
private String errCodeDes;
/**
* 公众账号ID.
*/
@XStreamAlias("appid")
private String appid;
/**
* 商户号.
*/
@XStreamAlias("mch_id")
private String mchId;
/**
* 服务商模式下的子公众账号ID.
*/
@XStreamAlias("sub_appid")
private String subAppId;
/**
* 服务商模式下的子商户号.
*/
@XStreamAlias("sub_mch_id")
private String subMchId;
/**
* 随机字符串.
*/
@XStreamAlias("nonce_str")
private String nonceStr;
/**
* 签名.
*/
@XStreamAlias("sign")
private String sign;
//以下为辅助属性
/**
* xml字符串.
*/
private String xmlString;
/**
* xml的Document对象，用于解析xml文本.
*/
private Document xmlDoc;
/**
* 将单位分转换成单位圆.
*
* @param fen 将要被转换为元的分的数值
* @return the string
*/
public static String fenToYuan(Integer fen) {
return BigDecimal.valueOf(Double.valueOf(fen) / 100).setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString();
}
/**
* 从xml字符串创建bean对象.
*
* @param the type parameter
* @param xmlString the xml string
* @param clz the clz
* @return the t
*/
public static T fromXML(String xmlString, Class clz) {
XStream xstream = XStreamInitializer.getInstance();
xstream.processAnnotations(clz);
T result = (T) xstream.fromXML(xmlString);
result.setXmlString(xmlString);
return result;
}
/**
* Gets logger.
*
* @return the logger
*/
protected Logger getLogger() {
return LoggerFactory.getLogger(this.getClass());
}
@Override
public String toString() {
return ToStringBuilder.reflectionToString(this, ToStringStyle.JSON_STYLE);
}
/**
* 将bean通过保存的xml字符串转换成map.
*
* @return the map
*/
public Map toMap() {
if (StringUtils.isBlank(this.xmlString)) {
throw new RuntimeException("xml数据有问题，请核实！");
}
Map result = Maps.newHashMap();
Document doc = this.getXmlDoc();
try {
NodeList list = (NodeList) XPathFactory.newInstance().newXPath()
.compile("/xml/*")
.evaluate(doc, XPathConstants.NODESET);
int len = list.getLength();
for (int i = 0; i < len; i++) {
result.put(list.item(i).getNodeName(), list.item(i).getTextContent());
}
} catch (XPathExpressionException e) {
throw new RuntimeException("非法的xml文本内容：" + xmlString);
}
return result;
}
/**
* 将xml字符串转换成Document对象，以便读取其元素值.
*/
private Document getXmlDoc() {
if (this.xmlDoc != null) {
return this.xmlDoc;
}
try {
this.xmlDoc = DocumentBuilderFactory
.newInstance()
.newDocumentBuilder()
.parse(new ByteArrayInputStream(this.xmlString.getBytes(StandardCharsets.UTF_8)));
return xmlDoc;
} catch (SAXException | IOException | ParserConfigurationException e) {
throw new RuntimeException("非法的xml文本内容：" + this.xmlString);
}
}
/**
* 获取xml中元素的值.
*
* @param path the path
* @return the xml value
*/
String getXmlValue(String... path) {
Document doc = this.getXmlDoc();
String expression = String.format("/%s//text()", Joiner.on("/").join(path));
try {
return (String) XPathFactory
.newInstance()
.newXPath()
.compile(expression)
.evaluate(doc, XPathConstants.STRING);
} catch (XPathExpressionException e) {
throw new RuntimeException("未找到相应路径的文本：" + expression);
}
}
/**
* 获取xml中元素的值，作为int值返回.
*
* @param path the path
* @return the xml value as int
*/
Integer getXmlValueAsInt(String... path) {
String result = this.getXmlValue(path);
if (StringUtils.isBlank(result)) {
return null;
}
return Integer.valueOf(result);
}
/**
* 校验返回结果签名.
*
* @param wxPayService the wx pay service
* @param signType 签名类型
* @param checkSuccess 是否同时检查结果是否成功
* @throws WxPayException the wx pay exception
*/
public void checkResult(WxPayService wxPayService, String signType, boolean checkSuccess) throws WxPayException {
//校验返回结果签名
Map map = toMap();
if (getSign() != null && !SignUtils.checkSign(map, signType, wxPayService.getConfig().getMchKey())) {
this.getLogger().debug("校验结果签名失败，参数：{}", map);
throw new WxPayException("参数格式校验错误！");
}
//校验结果是否成功
if (checkSuccess) {
List successStrings = Lists.newArrayList("SUCCESS", "");
if (!successStrings.contains(StringUtils.trimToEmpty(getReturnCode()).toUpperCase())
|| !successStrings.contains(StringUtils.trimToEmpty(getResultCode()).toUpperCase())) {
StringBuilder errorMsg = new StringBuilder();
if (getReturnCode() != null) {
errorMsg.append("返回代码：").append(getReturnCode());
}
if (getReturnMsg() != null) {
errorMsg.append("，返回信息：").append(getReturnMsg());
}
if (getResultCode() != null) {
errorMsg.append("，结果代码：").append(getResultCode());
}
if (getErrCode() != null) {
errorMsg.append("，错误代码：").append(getErrCode());
}
if (getErrCodeDes() != null) {
errorMsg.append("，错误详情：").append(getErrCodeDes());
}
this.getLogger().error("\n结果业务代码异常，返回结果：{},\n{}", map, errorMsg.toString());
throw WxPayException.from(this);
}
}
}
}
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