对微信支付开发者文档中给出的API进行了封装。
com.github.wxpay.sdk.WXPay类下提供了对应的方法:
方法名 | 说明 |
---|---|
microPay | 刷卡支付 |
unifiedOrder | 统一下单 |
orderQuery | 查询订单 |
reverse | 撤销订单 |
closeOrder | 关闭订单 |
refund | 申请退款 |
refundQuery | 查询退款 |
downloadBill | 下载对账单 |
report | 交易保障 |
shortUrl | 转换短链接 |
authCodeToOpenid | 授权码查询openid |
- 注意:
- 证书文件不能放在web服务器虚拟目录,应放在有访问权限控制的目录中,防止被他人下载
- 建议将证书文件名改为复杂且不容易猜测的文件名
- 商户服务器要做好病毒和木马防护工作,不被非法侵入者窃取证书文件
- 请妥善保管商户支付密钥、公众帐号SECRET,避免密钥泄露
- 参数为
Map<String, String>
对象,返回类型也是Map<String, String>
- 方法内部会将参数会转换成含有
appid
、mch_id
、nonce_str
、sign\_type
和sign
的XML - 可选HMAC-SHA256算法和MD5算法签名
- 通过HTTPS请求得到返回数据后会对其做必要的处理(例如验证签名,签名错误则抛出异常)
- 对于downloadBill,无论是否成功都返回Map,且都含有
return_code
和return_msg
,若成功,其中return_code
为SUCCESS
,另外data
对应对账单数据
配置类MyConfig:
package com.dlc.common.config;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Component;
import org.springframework.util.ResourceUtils;
import com.github.wxpay.sdk.IWXPayDomain;
import com.github.wxpay.sdk.WXPayConfig;
import com.github.wxpay.sdk.WXPayConstants;
@Configuration
public class MyWxPayConfig extends WXPayConfig {
@Autowired
private Environment env;
private byte[] certData;
private String appId = "";
private String mchId = "";
private String mchKey = "";
private String certPath = "";
@Override
public String getAppID() {
// return env.getProperty("weiXin.appid");
return this.appId;
}
@Override
public String getMchID() {
// return env.getProperty("weiXin.mch-id");
return this.mchId;
}
@Override
public String getKey() {
// return env.getProperty("weiXin.mch-key");
return this.mchKey;
}
//这里不写在构造方法是因为开发和线上的秘钥文件地址不同
@Override
public InputStream getCertStream() {
try {
String certPath = this.certPath;
File file = new File(certPath);
InputStream certStream = new FileInputStream(file);
this.certData = new byte[(int) file.length()];
certStream.read(this.certData);
certStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
ByteArrayInputStream certBis = new ByteArrayInputStream(this.certData);
return certBis;
}
@Override
public IWXPayDomain getWXPayDomain() {
IWXPayDomain iwxPayDomain = new IWXPayDomain() {
public void report(String domain, long elapsedTimeMillis, Exception ex) {
}
public DomainInfo getDomain(WXPayConfig config) {
return new IWXPayDomain.DomainInfo(WXPayConstants.DOMAIN_API, true);
}
};
return iwxPayDomain;
}
}
统一下单:
import com.github.wxpay.sdk.WXPay;
import java.util.HashMap;
import java.util.Map;
public class WXPayExample {
public static void main(String[] args) throws Exception {
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config);
Map<String, String> data = new HashMap<String, String>();
data.put("body", "腾讯充值中心-QQ会员充值");
data.put("out_trade_no", "2016090910595900000012");
data.put("device_info", "");
data.put("fee_type", "CNY");
data.put("total_fee", "1");
data.put("spbill_create_ip", "123.12.12.123");
data.put("notify_url", "http://www.example.com/wxpay/notify");
data.put("trade_type", "NATIVE"); // 此处指定为扫码支付
data.put("product_id", "12");
try {
Map<String, String> resp = wxpay.unifiedOrder(data);
System.out.println(resp);
} catch (Exception e) {
e.printStackTrace();
}
}
}
订单查询:
import com.github.wxpay.sdk.WXPay;
import java.util.HashMap;
import java.util.Map;
public class WXPayExample {
public static void main(String[] args) throws Exception {
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config);
Map<String, String> data = new HashMap<String, String>();
data.put("out_trade_no", "2016090910595900000012");
try {
Map<String, String> resp = wxpay.orderQuery(data);
System.out.println(resp);
} catch (Exception e) {
e.printStackTrace();
}
}
}
退款查询:
import com.github.wxpay.sdk.WXPay;
import java.util.HashMap;
import java.util.Map;
public class WXPayExample {
public static void main(String[] args) throws Exception {
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config);
Map<String, String> data = new HashMap<String, String>();
data.put("out_trade_no", "2016090910595900000012");
try {
Map<String, String> resp = wxpay.refundQuery(data);
System.out.println(resp);
} catch (Exception e) {
e.printStackTrace();
}
}
}
下载对账单:
import com.github.wxpay.sdk.WXPay;
import java.util.HashMap;
import java.util.Map;
public class WXPayExample {
public static void main(String[] args) throws Exception {
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config);
Map<String, String> data = new HashMap<String, String>();
data.put("bill_date", "20140603");
data.put("bill_type", "ALL");
try {
Map<String, String> resp = wxpay.downloadBill(data);
System.out.println(resp);
} catch (Exception e) {
e.printStackTrace();
}
}
}
其他API的使用和上面类似。
暂时不支持下载压缩格式的对账单,但可以使用该SDK生成请求用的XML数据:
import com.github.wxpay.sdk.WXPay;
import com.github.wxpay.sdk.WXPayUtil;
import java.util.HashMap;
import java.util.Map;
public class WXPayExample {
public static void main(String[] args) throws Exception {
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config);
Map<String, String> data = new HashMap<String, String>();
data.put("bill_date", "20140603");
data.put("bill_type", "ALL");
data.put("tar_type", "GZIP");
try {
data = wxpay.fillRequestData(data);
System.out.println(WXPayUtil.mapToXml(data));
} catch (Exception e) {
e.printStackTrace();
}
}
}
收到支付结果通知时,需要验证签名,可以这样做:
import com.github.wxpay.sdk.WXPay;
import com.github.wxpay.sdk.WXPayUtil;
import java.util.Map;
public class WXPayExample {
public static void main(String[] args) throws Exception {
String notifyData = "...."; // 支付结果通知的xml格式数据
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config);
Map<String, String> notifyMap = WXPayUtil.xmlToMap(notifyData); // 转换成map
if (wxpay.isPayResultNotifySignatureValid(notifyMap)) {
// 签名正确
// 进行处理。
// 注意特殊情况:订单已经退款,但收到了支付结果成功的通知,不应把商户侧订单状态从退款改成支付成功
}
else {
// 签名错误,如果数据里没有sign字段,也认为是签名错误
}
}
}
HTTPS请求可选HMAC-SHA256算法和MD5算法签名:
import com.github.wxpay.sdk.WXPay;
import com.github.wxpay.sdk.WXPayConstants;
public class WXPayExample {
public static void main(String[] args) throws Exception {
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config, WXPayConstants.SignType.HMACSHA256);
// ......
}
}
若需要使用sandbox环境:
import com.github.wxpay.sdk.WXPay;
import com.github.wxpay.sdk.WXPayConstants;
public class WXPayExample {
public static void main(String[] args) throws Exception {
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config, WXPayConstants.SignType.MD5, true);
// ......
}
}