首先申明，本人實(shí)現(xiàn)微信支付寶等支付平臺(tái)合多為一的二維碼支付，并且實(shí)現(xiàn)有效時(shí)間內(nèi)支付有效，本人采用的框架是spring springmvc mybatis 框架，maven管理。其實(shí)如果支付，不需要mybatis也能實(shí)現(xiàn)，代碼和本人見(jiàn)解還需大神指教。 流程和思路：**用戶(hù)點(diǎn)擊支付** --> **出現(xiàn)一次支付密碼，并且?guī)в袝r(shí)間限制** --> **掃描二維碼跳轉(zhuǎn)后臺(tái)** --> **后臺(tái)判斷是微信支付還是支付寶支付**

1.整體架構(gòu)：

2.配置編譯的文件目錄，

3.pom.xml,其中qrcode.qrcode、qrcode.swetake是從本地編譯到maven庫(kù)中，因?yàn)榫W(wǎng)絡(luò)maven中沒(méi)有。

<?xml version="1.0"?> <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><modelVersion>4.0.0</modelVersion><parent><groupId>fanghuai</groupId><artifactId>nbt</artifactId><version>0.0.1-SNAPSHOT</version></parent><groupId>com.nbt.qrcoder</groupId><artifactId>nbt-qrcode</artifactId><version>0.0.1-SNAPSHOT</version><packaging>war</packaging><name>nbt-qrcode Maven Webapp</name><url>http://maven.apache.org</url><properties><spring.version>4.1.3.RELEASE</spring.version><mybatis.version>3.2.8</mybatis.version><mybatis.spring.version>1.2.2</mybatis.spring.version><mybatis.paginator.version>1.2.15</mybatis.paginator.version><mysql.version>5.1.32</mysql.version><slf4j.version>1.6.4</slf4j.version><jackson.version>2.4.2</jackson.version><druid.version>1.0.9</druid.version><jstl.version>1.2</jstl.version><servlet-api.version>2.5</servlet-api.version><jsp-api.version>2.0</jsp-api.version><commons-lang3.version>3.3.2</commons-lang3.version><commons-io.version>1.3.2</commons-io.version><commons-net.version>3.3</commons-net.version><pagehelper.version>4.0.0</pagehelper.version></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency><!-- qrcode --><dependency><groupId>qrcode.qrcode</groupId><artifactId>qrcode</artifactId><version>1.0</version></dependency><dependency><groupId>qrcode.swetake</groupId><artifactId>swetake</artifactId><version>1.0</version></dependency><!-- 日志處理 --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>${slf4j.version}</version></dependency><!-- Mybatis --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>${mybatis.version}</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>${mybatis.spring.version}</version></dependency><dependency><groupId>com.github.miemiedev</groupId><artifactId>mybatis-paginator</artifactId><version>${mybatis.paginator.version}</version></dependency><dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper</artifactId><version>${pagehelper.version}</version></dependency><!-- MySql --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency><!-- 連接池 --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>${druid.version}</version></dependency><!-- Spring --><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aspects</artifactId><version>${spring.version}</version></dependency><!-- JSP相關(guān) --><dependency><groupId>jstl</groupId><artifactId>jstl</artifactId><version>${jstl.version}</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>${servlet-api.version}</version><scope>provided</scope></dependency><dependency><groupId>javax.servlet</groupId><artifactId>jsp-api</artifactId><version>${jsp-api.version}</version><scope>provided</scope></dependency></dependencies><build><finalName>nbt-qrcode</finalName></build> </project>

4.二維碼相關(guān)屬性（Model）

package com.nbt.util; import java.awt.image.BufferedImage; import jp.sourceforge.qrcode.data.QRCodeImage;public class J2SEImage implements QRCodeImage { BufferedImage bufImg; public J2SEImage(BufferedImage bufImg) { this.bufImg = bufImg; } public int getWidth() { return bufImg.getWidth(); } public int getHeight() { return bufImg.getHeight(); } public int getPixel(int x, int y) { return bufImg.getRGB(x, y); } }

5.二維碼生成代碼

package com.nbt.util;import java.awt.Color; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException;import javax.imageio.ImageIO;import jp.sourceforge.qrcode.QRCodeDecoder; import jp.sourceforge.qrcode.exception.DecodingFailedException;import com.swetake.util.Qrcode;public class QRCode {/*** 生成二維碼(QRCode)圖片* @param content 二維碼內(nèi)容* @param imgPath 存放二維位置*/ public static void encoderQRCode(BuildQRCode bc) { try { Qrcode qrcodeHandler = new Qrcode(); qrcodeHandler.setQrcodeErrorCorrect('M'); qrcodeHandler.setQrcodeEncodeMode('B'); qrcodeHandler.setQrcodeVersion(7); System.out.println(bc.getContent()); byte[] contentBytes = bc.getContent().getBytes("gb2312"); BufferedImage bufImg = new BufferedImage(140, 140, BufferedImage.TYPE_INT_RGB); Graphics2D gs = bufImg.createGraphics(); gs.setBackground(Color.WHITE); gs.clearRect(0, 0, 140, 140); // 設(shè)定圖像顏色> BLACK gs.setColor(Color.BLACK); // 設(shè)置偏移量 不設(shè)置可能導(dǎo)致解析出錯(cuò) int pixoff = 2; // 輸出內(nèi)容> 二維碼 if (contentBytes.length > 0 && contentBytes.length < 120) { boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes); for (int i = 0; i < codeOut.length; i++) { for (int j = 0; j < codeOut.length; j++) { if (codeOut[j][i]) { gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3); } } } } else { System.err.println("QRCode content bytes length = " + contentBytes.length + " not in [ 0,120 ]. "); } gs.dispose(); bufImg.flush(); File imgFile = new File(bc.getImgPath()); // 生成二維碼QRCode圖片 ImageIO.write(bufImg, "png", imgFile); } catch (Exception e) { e.printStackTrace(); } } /*** 解碼二維碼* @param imgPath* @return String*/ public static String decoderQRCode(String imgPath) { // QRCode 二維碼圖片的文件 File imageFile = new File(imgPath); BufferedImage bufImg = null; String decodedData = null; try { bufImg = ImageIO.read(imageFile); QRCodeDecoder decoder = new QRCodeDecoder(); decodedData = new String(decoder.decode(new J2SEImage(bufImg))); // try { // System.out.println(new String(decodedData.getBytes("gb2312"), // "gb2312")); // } catch (Exception e) { // // TODO: handle exception // } } catch (IOException e) { System.out.println("Error: " + e.getMessage()); e.printStackTrace(); } catch (DecodingFailedException dfe) { System.out.println("Error: " + dfe.getMessage()); dfe.printStackTrace(); } return decodedData; } public static void main(String[] args) {//生成二維碼String imgPath = "D:/test/Michael_QRCode.png"; String content = "http://www.baidu.com"; BuildQRCode bc = new BuildQRCode(imgPath,content);encoderQRCode(bc); System.out.println("encoder QRcode success"); //解讀二維碼String decoderContent =decoderQRCode(imgPath); System.out.println("解析結(jié)果如下："); System.out.println(decoderContent); System.out.println("========decoder success!!!");} }

6.Controller相關(guān)代碼(jsp頁(yè)面要通過(guò)流的形式放在頁(yè)面上，不然二維碼顯示不出來(lái)。)

package com.nbt.controller;import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.OutputStream; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Map;import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import org.apache.log4j.Logger; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam;import com.mysql.jdbc.StringUtils; import com.nbt.util.BuildQRCode; import com.nbt.util.QRCode; @Controller @RequestMapping("/qr") public class QRCodeController {private static Logger log = Logger.getLogger(QRCodeController.class);/*** 跳轉(zhuǎn)到二維碼頁(yè)面* @param request* @return*/@RequestMapping("/toShowQRCode.do")public String showQRCode(HttpServletRequest request){log.info("跳轉(zhuǎn)到二維碼頁(yè)面...");return "qr"; }/*** 通過(guò)流的形式實(shí)現(xiàn)在jsp上面顯示二維碼* @param model* @param request* @param response* @throws IOException*/@RequestMapping("/readImage")public void readImage(Model model, HttpServletRequest request, HttpServletResponse response) throws IOException{BuildQRCode bc = new BuildQRCode();//調(diào)用無(wú)參構(gòu)造方法bc.initParam(bc);//對(duì)參數(shù)進(jìn)行初始化QRCode.encoderQRCode(bc);//生成二維碼String filePath = bc.getImgPath();File filePic = new File(filePath);if(filePic.exists()){FileInputStream is = new FileInputStream(filePic);int i = is.available(); // 得到文件大小 byte data[] = new byte[i]; is.read(data); // 讀數(shù)據(jù) is.close(); response.setContentType("image/*"); // 設(shè)置返回的文件類(lèi)型 OutputStream toClient = response.getOutputStream(); // 得到向客戶(hù)端輸出二進(jìn)制數(shù)據(jù)的對(duì)象 toClient.write(data); // 輸出數(shù)據(jù) toClient.close(); }} /*** 預(yù)支付接口* @param timeout* @param orderNo* @return*/@RequestMapping("/toPay.do")public String toPay(@RequestParam("timeout") String timeout,@RequestParam("orderNo")String orderNo){log.info("開(kāi)始進(jìn)行支付");if(StringUtils.isNullOrEmpty(orderNo)||StringUtils.isNullOrEmpty(timeout)){log.info("訂單號(hào)或者時(shí)間超時(shí)為空");return "faile";}Calendar ca = Calendar.getInstance();String afterTime = new SimpleDateFormat("yyyyMMddHHmmssSS").format(ca.getTime());if(!afterTime.equals(timeout)){log.info(afterTime+"---->"+timeout);log.info("二維碼已失效，請(qǐng)重新支付");return "faile";}/*** ..... 這段可以根據(jù)二維碼參數(shù)不一樣，去相關(guān)支付平臺(tái)進(jìn)行支付，* 具體代碼可以根據(jù)支付平臺(tái)的api文檔進(jìn)行支付操作*/log.info("支付成功");return "success";} }

7.二維碼相關(guān)參數(shù)初始化(我目前二維碼存放在本地，你們可以把二維碼放在程序目錄下)。

package com.nbt.util;import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date;public class BuildQRCode {/*** 二維碼存放地址*/private String imgPath ;/*** 二維碼內(nèi)容*/private String content ;/*** 無(wú)參構(gòu)造方法*/public BuildQRCode() {}/*** 有參構(gòu)造方法* @param imgPath* @param content*/public BuildQRCode(String imgPath, String content) {super();this.imgPath = imgPath;this.content = content;}public void initParam(BuildQRCode bqrc){// 生成臨時(shí)訂單號(hào)和有效時(shí)間Calendar ca = Calendar.getInstance();Date date = ca.getTime();SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSS");System.out.println(sdf.format(date));String orderNo = sdf.format(date)+(int)Math.random()*1000;//生成訂單號(hào)//生成有效時(shí)間五分鐘ca.add(Calendar.MINUTE,5);System.out.println(sdf.format(ca.getTime()));String timeout = sdf.format(ca.getTime());//對(duì)參數(shù)進(jìn)行初始化bqrc.setImgPath( "D:/test/Michael_QRCode.png");bqrc.setContent( "http://localhost:8080/nbt-qrcode/qr/toPay.do?orderNo="+orderNo+"&timeout="+timeout);}public static void main(String[] args) {BuildQRCode qc = new BuildQRCode();qc.initParam(qc);//設(shè)置參數(shù)QRCode.encoderQRCode(qc);}public String getImgPath() {return imgPath;}public void setImgPath(String imgPath) {this.imgPath = imgPath;}public String getContent() {return content;}public void setContent(String content) {this.content = content;}}

總結(jié)

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