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微信支付 Java SDK

微信支付开发者文档中给出的API进行了封装。

com.qq.weixin.pay.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

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appidmch_idnonce_strsign的XML; 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_codereturn_msg。 若成功,其中return_codeSUCCESS,另外data对应对账单数据。

安装

maven:

<dependency>
    <groupId>com.github.wxpay</groupId>
    <artifactId>wxpay-sdk</artifactId>
    <version>0.0.1</version>
</dependency>

示例

MyConfig.java:

import com.github.wxpay.sdk.WXPayConfig;
import java.io.*;

public class MyConfig implements WXPayConfig{

    private byte[] certData;

    public MyConfig() throws Exception {
        String certPath = "/path/to/apiclient_cert.p12";
        File file = new File(certPath);
        InputStream certStream = new FileInputStream(file);
        this.certData = new byte[(int) file.length()];
        certStream.read(this.certData);
        certStream.close();
    }

    public String getAppID() {
        return "wx8888888888888888";
    }

    public String getMchID() {
        return "12888888";
    }

    public String getKey() {
        return "88888888888888888888888888888888";
    }

    public InputStream getCertStream() {
        ByteArrayInputStream certBis = new ByteArrayInputStream(this.certData);
        return certBis;
    }

    public int getTimeOutMs() {
        return 10000;
    }
}

WXPayExample.java:

import com.github.wxpay.sdk.WXPay;

import java.util.HashMap;
import java.util.Map;

public class WXPayExample {

    private WXPay wxpay;
    private MyConfig config;

    public WXPayExample() throws Exception {
        config = new MyConfig();
        wxpay = new WXPay(config);
    }

    /**
     * 扫码支付  下单
     */
    public void doUnifiedOrder() {
        HashMap<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", "https://www.example.com/wxpay/notify");
        data.put("trade_type", "NATIVE");
        data.put("product_id", "12");

        try {
            Map<String, String> r = wxpay.unifiedOrder(data);
            System.out.println(r);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Java Doc

https://wxpay.github.io/sdk/javadoc/

License

BSD

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