Java开发微信Navicat支付完整版

更新时间：2019年08月20日 14:43:10 缀不努力读书长窜当吴

这篇文章珠绍了Java开发微信Navicat支付完整版java版微信，文中通过实例代码介绍的十分详尽，对茨学习护仔一定的参考学习价值，需要的徘下面随着小编来一瓢学习吧

一：准备工譼rong>

1：先去注册一岗号java版微信，选?p>

2：去注册一抚号，用于收款

3：在商户号中配置对应的公众号的APPID

4：支付结果异步通知（需要重点注意）

注意：请先简要查看官方文档按流程开发，一切以官网文档为謘p;

5：测试的时酣要使用内网穿透软件，坟滇报错

二：开发代码

WeChatPayConfig：

public class WeChatPayConfig {
  //公众号APPID
  private String APPID = "";
 
  //商户号KEY
  private String KEY = "";
 
  //商户号ID
  private String MCHID = "";
 
  //支付完成号回捣，需要外网能访问要是蝇不能是127.0.0.1跟localhost
  private String NOTIFY_URL = "";
}

WeChatPayServcie：

public interface WeChatPayServcie {
 
  //微信支付下单
  public Map<String,String> getWxpayUrl(Map<String, String> sourceMap);
 
  //订单查询
  public String orderQuery(String out_trade_no);
}

@Service
public class WeChatPayServiceImpl implements WeChatPayServcie {
  
  /**
   * 微信支付请求
   * @param sourceMap
   * @return
   */
  public Map<String,String> getWxpayUrl(Map<String, String> sourceMap) {
    SortedMap<String, Object> signParams = new TreeMap<String, Object>();
    String nonce_str = UUID.randomUUID().toString().trim().replaceAll("-", "");
    signParams.put("appid", PayConfig.APPID);
    signParams.put("mch_id",PayConfig.MCHID);
    signParams.put("nonce_str",sourceMap.get("nonce_str"));
    signParams.put("product_id",sourceMap.get("prod_id"));
    signParams.put("body",sourceMap.get("body"));
    signParams.put("out_trade_no",sourceMap.get("out_trade_no"));
    signParams.put("total_fee",sourceMap.get("total_fee"));
    signParams.put("spbill_create_ip", WxUtil.getIp());
    signParams.put("notify_url",PayConfig.NOTYFLY_URL);
    signParams.put("trade_type","NATIVE");
    String sign = WxUtil.createSign(signParams,PayConfig.KEY);
    signParams.put("sign",sign);
    String xmlPackage = WxUtil.parseMapXML(signParams);
    Map<String, Object> resultMap = new HashMap();
    try {
      String result = HttpUtil.post("https://api.mch.weixin.qq.com/pay/unifiedorder",xmlPackage);
      resultMap = WxUtil.parseXmlMap(result);
    } catch (Exception e) {
      e.printStackTrace();
    }
    String returnCode = (String) resultMap.get("return_code");
    String returnMsg = (String) resultMap.get("return_msg");
    if (returnCode.equalsIgnoreCase("FAIL")) {
      throw new RuntimeException(returnMsg);
    }
    String result_code = (String) resultMap.get("result_code");
    if (result_code.equalsIgnoreCase("FAIL")) {
      throw new RuntimeException(resultMap.get("err_code_des"));
    }
    String code_url = (String) resultMap.get("code_url");
    Map<String,String> map = new HashMap<>();
    map.put("code_url",code_url);
    map.put("out_trade_no",sourceMap.get("out_trade_no"));
    return map;
  }
 
 
  /**
   * 微信支付订单查询
   * @param out_trade_no
   * @return
   */
  public String orderQuery(String out_trade_no) {
    String nonce_str = UUID.randomUUID().toString().trim().replaceAll("-", "");
    SortedMap<String, Object> signParams = new TreeMap<>();
    signParams.put("appid", payConfig.getWeChatPorpetties().getAppId());
    signParams.put("mch_id",payConfig.getWeChatPorpetties().getMchId());
    signParams.put("out_trade_no",out_trade_no);
    signParams.put("nonce_str",nonce_str);
    String sign = WxUtil.createSign(signParams,payConfig.getWeChatPorpetties().getApiKey());
    signParams.put("sign",sign);
    String xmlPackage = WxUtil.parseMapXML(signParams);
    Map<String, Object> resultMap = new HashMap();
    try {
      String result = HttpUtil.post("https://api.mch.weixin.qq.com/pay/orderquery",xmlPackage);
      resultMap = WxUtil.parseXmlMap(result);
    } catch (Exception e) {
      e.printStackTrace();
      throw new RuntimeException("渠道网络异常");
    }
    String returnCode = (String) resultMap.get("return_code");
    String returnMsg = (String) resultMap.get("return_msg");
    if (returnCode.equalsIgnoreCase(PayContants.FAIL)) {
      throw new RuntimeException(returnMsg);
    }
    String result_code = (String) resultMap.get("result_code");
    if (result_code.equalsIgnoreCase(PayContants.FAIL)) {
      throw new RuntimeException(resultMap.get("err_code_des"));
    }
    String trade_state = (String) resultMap.get("trade_state");
    return trade_state;
  }
}

WeChatPayController：

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