springboot 上传zip文件，识别二维码图片

一、创建springboot项目

1、访问http://start.spring.io/
2、选择你需要的构建方式，填写项目基本信息
3、点击Generate Project下载项目压缩包
4、解压导入

QQ图片20180713141645.png

二、添加相关依赖，修改配置文件

pom.xml
QRCode.jar 需要先下载到工程

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.payment</groupId>
    <artifactId>VerifyPaymentCode</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>VerifyPaymentCode</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>RELEASE</version>
        </dependency>
        <dependency>
            <groupId>QRCode</groupId>
            <artifactId>QRCode</artifactId>
            <version>1.0</version>
            <scope>system</scope>
            <systemPath>${project.basedir}/web/lib/QRCode.jar</systemPath>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

application.properties

# MULTIPART (MultipartProperties)
#默认支持文件上传
spring.servlet.multipart.enabled=true
#支持文件写入磁盘.
spring.servlet.multipart.file-size-threshold=0 
# 上传文件的临时目录
spring.servlet.multipart.location=
# 最大支持文件大小
spring.servlet.multipart.max-file-size=10Mb 
# 最大支持请求大小
spring.servlet.multipart.max-request-size=100Mb 

三、编写MyQRCodeImage解析二维码

package com.payment.VerifyPaymentCode.util;

import com.payment.VerifyPaymentCode.pojo.Payment;
import jp.sourceforge.qrcode.QRCodeDecoder;
import jp.sourceforge.qrcode.data.QRCodeImage;
import jp.sourceforge.qrcode.exception.DecodingFailedException;

import java.io.InputStream;
import java.math.BigDecimal;
import java.nio.charset.Charset;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;


public class MyQRCodeImage implements QRCodeImage {

    BufferedImage bufferedImage ;

    public MyQRCodeImage(BufferedImage bufferedImage) {
        super();
        this.bufferedImage = bufferedImage;
    }

    @Override
    public int getHeight() {
        return bufferedImage.getHeight();
    }

    @Override
    public int getPixel(int arg0, int arg1) {
        return bufferedImage.getRGB(arg0, arg1);
    }

    @Override
    public int getWidth() {
        return bufferedImage.getWidth();
    }


    public static String decode(BufferedImage bufferedImage) throws Exception {
        String result;
        try{
            if (bufferedImage == null) {
                result = "图片解析失败";
                return result;
            }
            QRCodeDecoder qrCodeDecoder = new QRCodeDecoder();
            result = new String(qrCodeDecoder.decode(new MyQRCodeImage(bufferedImage)),"utf-8");
            bufferedImage.flush();
        }catch(DecodingFailedException dfe) {
            Logger.getLogger(MyQRCodeImage.class.getName()).log(Level.INFO, "解析失败");
            result = "二维码解析失败";
            return result;
        }
        return result;
    }

    public static List<Payment> IdentifyQRCode(InputStream inputStream) throws Exception{
        ZipInputStream zis=new ZipInputStream(inputStream,Charset.forName("GBK"));
        BufferedImage bufferedImage = null;
        ZipEntry entry;
        List<Payment> plist=new ArrayList<>();
        try {
            while ((entry = zis.getNextEntry()) != null) {
                if(!entry.isDirectory()){
                    //识别图片
                    bufferedImage=ImageIO.read(zis);
                    String name = new File(entry.getName()).getName();
                    plist.add(getPayment(name,bufferedImage));
                    zis.closeEntry();
                }
            }
        }finally {
            if(zis!=null){
                zis.close();
            }
        }
        return plist;
    }
    static Payment getPayment(String fileName,BufferedImage bufferedImage) throws Exception {
        String str=decode(bufferedImage).toLowerCase();
        String amountStr=fileName.substring(0,fileName.lastIndexOf("."));
        int amount=0;
        //包含小数的正整数,且不能大于11位 单位分
        boolean result=amountStr.matches("^[+]?\\d+(\\.\\d+)?$");
        if (result == true && amountStr.length()<=11) {
            //是否只包含两位小数
            if(amountStr.contains(".")){
                if(amountStr.split("\\.")[1].length()==2){
                    BigDecimal b1=new BigDecimal(100);
                    BigDecimal a1=new BigDecimal(amountStr).multiply(b1);
                    amount=a1.intValue();
                }else{
                    return new Payment(fileName,400,amount,null,"文件名不合法，只能是包含两位小数的正整数");
                }
            }else{
                amount=Integer.parseInt(amountStr);
            }
        }else{
            return new Payment(fileName,400,amount,null,"文件名不合法，只能是包含两位小数的正整数");
        }

        if(str.indexOf("http")!=-1){
            return new Payment(fileName,200,amount,str,"");
        }else{
            return new Payment(fileName,400,amount,null,str);
        }
    }


}

四、编写Controller

package com.payment.VerifyPaymentCode.controller;

import com.payment.VerifyPaymentCode.pojo.ResultCode;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import static com.payment.VerifyPaymentCode.util.MyQRCodeImage.IdentifyQRCode;

@RestController
public class Upload {

    @RequestMapping("/upload")
    public ResultCode singleFileUpload(@RequestParam("file") MultipartFile file) throws Exception {
        if (file.isEmpty()) {
            return new ResultCode(500,"Please select a file to upload");
        }if(!file.getContentType().equalsIgnoreCase("application/x-zip-compressed")){
            return new ResultCode(500,"文件类型有误,只接受.zip");
        }
        return new ResultCode(200,IdentifyQRCode(file.getInputStream()),"You successfully uploaded '" + file.getOriginalFilename() + "'");
    }
}