微信支付支付结果通知处理

说明

参考官方文档

结果处理

1.添加微信支付SDK依赖

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

2.定义接收支付结果通知的接口，就是中提交的参数notify_url设置

@RequestMapping("/success")
public String success(HttpServletRequest request) throws Exception {
	String param = this.getBodyContent(request);
        log.info("支付成功回调：param={}", param);
        Map<String, String> map = new HashMap<>(16);
        Map<String, String> stringStringMap = WXPayUtil.xmlToMap(param);
        if ("SUCCESS".equals(stringStringMap.get("return_code"))) {
            map.put("return_code", "SUCCESS");
            map.put("return_msg", "OK");
        }
	return WXPayUtil.mapToXml(map);
}	

public String getBodyContent(HttpServletRequest request) {
    ServletInputStream in = null;
    BufferedReader reader = null;
    StringBuilder content = new StringBuilder();
    try {
        in = request.getInputStream();
        reader = new BufferedReader(new InputStreamReader(in));
        // 作为输出字符串的临时串，用于判断是否读取完毕
        String itemStr = "";
        while (null != (itemStr = reader.readLine())) {
            content.append(itemStr);
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            if (null != reader) {
                reader.close();
            }
            if (null != in) {
                in.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return content.toString();
}