springboot微信支付,支付二維碼生成

https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=9_1 微信掃碼支付開發者文檔,裏面會有支付流程的教程

接口連接

URL地址： https://api.mch.weixin.qq.com/pay/unifiedorder

首先,咱們須要符合微信平臺的要求,經過接口鏈接,返回一下該數據,數據類型爲xml格式,咱們通常獲取code_url的連接便可

{nonce_str=xBkIJKHN7wGdjbgn, code_url= weixin://wxpay/bizpayurl?pr=NbLYUB0, appid=wx5beac15ca207c40c, sign=2D2972919C12A6C5628198AB0B906D74, trade_type=NATIVE, return_msg=OK, result_code=SUCCESS, mch_id=1503809911, return_code=SUCCESS, prepay_id=wx311714159734431013de08ba0340929716}

 

接下來須要導入谷歌

依賴

                <!-- google二維碼生成包 -->

                <dependency>

                    <groupId>com.google.zxing</groupId>

                    <artifactId>javase</artifactId>

                    <version>3.3.0</version>

                </dependency>

                        

                <dependency>

                    <groupId>com.google.zxing</groupId>

                    <artifactId>core</artifactId>

                    <version>2.0</version>

                </dependency>

 

導入以後,咱們就能夠使用它的api了.

接下來://生成二維碼配置

Map<EncodeHintType, Object> hints = new HashMap<>();

//設置糾錯等級

hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);

//編碼類型

hints.put(EncodeHintType.CHARACTER_SET,"UTF-8");

 

將咱們獲取的code_url(前文已提到的微信文檔中,咱們請求成功會返回一個code_url,這是關鍵,有了它才能生成二維碼,因此請仔細閱讀微信文檔),生成二維碼,而且條碼類型設置爲QR_CODE(二維碼),寬高爲400

BitMatrix bitMatrix = new MultiFormatWriter().encode(code_URl, BarcodeFormat.QR_CODE, 400, 400);

 

經過響應輸出流,輸出二維碼

//響應用輸出流輸出

OutputStream outputStream = response.getOutputStream();

MatrixToImageWriter.writeToStream(bitMatrix,"png",outputStream);