点击上方“java进阶架构师”，选择右上角“置顶公众号”

20大进阶架构专题每日送达

首发：https://blog.csdn.net/fanghuainihao

之前，师长就发过微信支付，和支付宝支付两文，详见：

1. 一文快速实现微信公众号支付功能（详细版，建议收藏备用）

2. Spring MVC+Spring+Mybatis实现支付宝支付功能（图文详解+完整代码）

上面标题点击可跳转。这时候，就有杠精粉丝跑来说了，好是好，那要是我想多支付平台的二维码合一呢？今天，这篇文章就带你们简单实现多平台支付！

整体思路：

实现微信支付宝等支付平台合多为一的二维码支付，并且实现有效时间内支付有效，本人采用的框架是spring springmvc mybatis框架，maven管理。其实如果支付，不需要mybatis也能实现，代码和本人见解还需大神指教。

基本流程和思路：

1. 用户点击支付

2. 出现一次支付密码，并且带有时间限制

3. 扫描二维码跳转后台

4. 后台判断是微信支付还是支付宝支付

1.整体架构：

2.配置编译的文件目录

3.pom.xml,其中qrcode.qrcode、qrcode.swetake是从本地编译到maven库中，因为网络maven中没有。

<?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> <!-- 日志处理 --> <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> <!-- 连接池 -->  <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相关 -->    <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>

4.二维码相关属性（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);     }   }

5.二维码生成代码

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 {   /** * 生成二维码(QRCode)图片   * @param content  二维码内容    * @param imgPath 存放二维位置    */  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);   // 设定图像颜色> BLACK     gs.setColor(Color.BLACK);   // 设置偏移量 不设置可能导致解析出错    int pixoff = 2;    // 输出内容> 二维码     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());  // 生成二维码QRCode图片    ImageIO.write(bufImg, "png", imgFile);    } catch (Exception e) {     e.printStackTrace();    }   }   /** * 解码二维码 * @param imgPath   * @return String   */  public static  String decoderQRCode(String imgPath) {   // QRCode 二维码图片的文件  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) {    //生成二维码 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");     //解读二维码 String decoderContent =decoderQRCode(imgPath);     System.out.println("解析结果如下：");     System.out.println(decoderContent);     System.out.println("========decoder success!!!"); }
}

6.Controller相关代码(jsp页面要通过流的形式放在页面上，不然二维码显示不出来。)

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);  /** * 跳转到二维码页面  * @param request   * @return  */  @RequestMapping("/toShowQRCode.do")  public String showQRCode(HttpServletRequest request){   log.info("跳转到二维码页面...");  return "qr";      }   /** * 通过流的形式实现在jsp上面显示二维码   * @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();//调用无参构造方法  bc.initParam(bc);//对参数进行初始化 QRCode.encoderQRCode(bc);//生成二维码    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); // 读数据   is.close();     response.setContentType("image/*"); // 设置返回的文件类型      OutputStream toClient = response.getOutputStream(); // 得到向客户端输出二进制数据的对象    toClient.write(data); // 输出数据   toClient.close();   }   }   /** * 预支付接口 * @param timeout   * @param orderNo   * @return  */  @RequestMapping("/toPay.do") public String toPay(@RequestParam("timeout") String timeout,@RequestParam("orderNo")String orderNo){  log.info("开始进行支付");   if(StringUtils.isNullOrEmpty(orderNo)||StringUtils.isNullOrEmpty(timeout)){ log.info("订单号或者时间超时为空");  return "faile";   }   Calendar ca = Calendar.getInstance();  String afterTime = new SimpleDateFormat("yyyyMMddHHmmssSS").format(ca.getTime());    if(!afterTime.equals(timeout)){ log.info(afterTime+"---->"+timeout); log.info("二维码已失效，请重新支付");  return "faile";   }   /** * ..... 这段可以根据二维码参数不一样，去相关支付平台进行支付，   * 具体代码可以根据支付平台的api文档进行支付操作  */  log.info("支付成功"); return "success"; }
}

7.二维码相关参数初始化(我目前二维码存放在本地，你们可以把二维码放在程序目录下)。

package com.nbt.util;    import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;  public class BuildQRCode {  /** * 二维码存放地址   */  private   String imgPath ;  /** * 二维码内容 */  private  String content ;   /** * 无参构造方法    */  public BuildQRCode() {  }   /** * 有参构造方法    * @param imgPath   * @param content   */  public BuildQRCode(String imgPath, String content) {    super();    this.imgPath = imgPath;    this.content = content;    }   public void initParam(BuildQRCode bqrc){    //  生成临时订单号和有效时间    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;//生成订单号 //生成有效时间五分钟 ca.add(Calendar.MINUTE,5);  System.out.println(sdf.format(ca.getTime()));   String timeout = sdf.format(ca.getTime()); //对参数进行初始化  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);//设置参数 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;    }
}

教程就到这里

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