uniapp+springBoot实现APP微信支付功能
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2022-07-12 14:17:03
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uniapp+springBoot实现APP微信支付功能
在pom.xml文件中引入SDK
<dependency> <groupId>com.github.wxpay</groupId> <artifactId>wxpay-sdk</artifactId> <version>0.0.3</version> </dependency>
在这里可以看见
后台代码
// Controller
package com.sharetime.sapiens.wx;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletRequest;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Map;
@RestController
@RequestMapping("/order")
public class OrderController {
@Autowired
private WxService wxService;
@PostMapping("/wx")
public Map wxAdd(HttpServletRequest request,int price) throws Exception {
return wxService.doUnifiedOrder(request,price);
}
@PostMapping("/notify")
@ApiOperation("微信回调")
public String wxPayNotify(HttpServletRequest request) {
String resXml = "";
try {
InputStream inputStream = request.getInputStream();
//将InputStream转换成xmlString
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
System.out.println(e.getMessage());
} finally {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
resXml = sb.toString();
String result = wxService.payBack(resXml);
return result;
} catch (Exception e) {
System.out.println("微信手机支付失败:" + e.getMessage());
String result = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>" + "<return_msg><![CDATA[报文为空]]></return_msg>" + "</xml> ";
return result;
}
}
}
// 设置具体参数实现微信接口
package com.sharetime.sapiens.wx;
import com.github.wxpay.sdk.WXPayConfig;
import org.springframework.util.ClassUtils;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
public class WXConfigUtil implements WXPayConfig {
private byte[] certData;
public static final String APP_ID = "你的APPID";
public static final String KEY = "商户号API**";
public static final String MCH_ID = "商户号";
public WXConfigUtil() throws Exception {
String certPath = ClassUtils.getDefaultClassLoader().getResource("").getPath()+"/weixin/apiclient_cert.p12";//从微信商户平台下载的安全证书存放的路径
File file = new File(certPath);
InputStream certStream = new FileInputStream(file);
this.certData = new byte[(int) file.length()];
certStream.read(this.certData);
certStream.close();
}
@Override
public String getAppID() {
return APP_ID;
}
//parnerid,商户号
@Override
public String getMchID() {
return MCH_ID;
}
@Override
public String getKey() {
return KEY;
}
@Override
public InputStream getCertStream() {
ByteArrayInputStream certBis = new ByteArrayInputStream(this.certData);
return certBis;
}
@Override
public int getHttpConnectTimeoutMs() {
return 8000;
}
@Override
public int getHttpReadTimeoutMs() {
return 10000;
}
}
// service
package com.sharetime.sapiens.wx;
import javax.servlet.http.HttpServletRequest;
import java.util.Map;
public interface WxService {
String payBack(String resXml);
Map doUnifiedOrder(HttpServletRequest request,int price) throws Exception;
}
// service实现类
package com.sharetime.sapiens.wx;
import com.github.wxpay.sdk.WXPay;
import com.github.wxpay.sdk.WXPayConstants;
import com.github.wxpay.sdk.WXPayUtil;
import org.springframework.stereotype.Service;
import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;
@Service
public class WxServiceImpl implements WxService {
public static final String NOTIFY_URL = "回调地址";//必须是外网地址,带域名的
public static final String TRADE_TYPE_APP = "APP";//类型 APP、JSPI......
@Override
public String payBack(String resXml) {
WXConfigUtil config = null;
try {
config = new WXConfigUtil();
} catch (Exception e) {
e.printStackTrace();
}
WXPay wxpay = new WXPay(config);
String xmlBack = "";
Map<String, String> notifyMap = null;
try {
notifyMap = WXPayUtil.xmlToMap(resXml); // 调用官方SDK转换成map类型数据
if (wxpay.isPayResultNotifySignatureValid(notifyMap)) {//验证签名是否有效,有效则进一步处理
String return_code = notifyMap.get("return_code");//状态
String out_trade_no = notifyMap.get("out_trade_no");//商户订单号
if (return_code.equals("SUCCESS")) {
if (out_trade_no != null) {
// 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,不应把商户的订单状态从退款改成支付成功
// 注意特殊情况:微信服务端同样的通知可能会多次发送给商户系统,所以数据持久化之前需要检查是否已经处理过了,处理了直接返回成功标志
//业务数据持久化
System.err.println("微信手机支付回调成功订单号:{}");
System.err.println(out_trade_no);
xmlBack = "<xml>" + "<return_code><![CDATA[SUCCESS]]></return_code>" + "<return_msg><![CDATA[OK]]></return_msg>" + "</xml> ";
} else {
System.err.println("微信手机支付回调失败订单号:{}");
System.err.println(out_trade_no);
xmlBack = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>" + "<return_msg><![CDATA[报文为空]]></return_msg>" + "</xml> ";
}
}
return xmlBack;
} else {
// 签名错误,如果数据里没有sign字段,也认为是签名错误
//失败的数据要不要存储?
System.err.println("手机支付回调通知签名错误");
xmlBack = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>" + "<return_msg><![CDATA[报文为空]]></return_msg>" + "</xml> ";
return xmlBack;
}
} catch (Exception e) {
System.err.println("手机支付回调通知签名错误");
System.err.println(e);
xmlBack = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>" + "<return_msg><![CDATA[报文为空]]></return_msg>" + "</xml> ";
}
return xmlBack;
}
@Override
public Map doUnifiedOrder(HttpServletRequest request,int price) throws Exception {
try {
WXConfigUtil config = new WXConfigUtil();
WXPay wxpay = new WXPay(config);
Map<String, String> data = new HashMap<>();
//生成商户订单号,不可重复
data.put("appid", config.getAppID());
data.put("mch_id", config.getMchID());
data.put("nonce_str", WXPayUtil.generateNonceStr());
String body = "订单支付";
data.put("body", body);
data.put("out_trade_no", System.currentTimeMillis()+ "");
data.put("total_fee", String.valueOf((int)(price)));
//自己的服务器IP地址
data.put("spbill_create_ip", request.getRemoteAddr());
//异步通知地址(请注意必须是外网)
data.put("notify_url", NOTIFY_URL);
//交易类型
data.put("trade_type", TRADE_TYPE_APP);
//附加数据,在查询API和支付通知中原样返回,该字段主要用于商户携带订单的自定义数据
data.put("attach", "");
data.put("sign", WXPayUtil.generateSignature(data, config.getKey(),
WXPayConstants.SignType.MD5));
//使用官方API请求预付订单
Map<String, String> response = wxpay.unifiedOrder(data);
System.out.println(response);
if ("SUCCESS".equals(response.get("return_code"))) {//主要返回以下5个参数
Map<String, String> param = new HashMap<>();
param.put("appid", config.getAppID());
param.put("partnerid", response.get("mch_id"));
param.put("prepayid", response.get("prepay_id"));
param.put("package", "Sign=WXPay");
param.put("noncestr", WXPayUtil.generateNonceStr());
param.put("timestamp", System.currentTimeMillis() / 1000 + "");
param.put("sign", WXPayUtil.generateSignature(param, config.getKey(),
WXPayConstants.SignType.MD5));
System.out.println(param);
return param;
}
} catch (Exception e) {
e.printStackTrace();
throw new Exception("下单失败");
}
throw new Exception("下单失败");
}
}
包结构自己调整
前台代码
// 点击事件
pay(){
uni.request({
url: common.server_path + '/order/wx',
method: 'POST',
header: {
'content-type': 'application/x-www-form-urlencoded'
},
data: {
price: _self.price*100,
},
success: function(data) {
console.log(JSON.stringify(data.data))
uni.requestPayment({
provider: 'wxpay',
orderInfo: JSON.stringify(data.data), //微信、支付宝订单数据
success: function (res) {
console.log('success:' + JSON.stringify(res));
},
fail: function (err) {
console.log('fail:' + JSON.stringify(err));
}
});
}
});
}
好运
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