识别二维码

一、pom

<dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>core</artifactId>
            <version>3.3.3</version>
        </dependency>
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>3.3.3</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.3.0</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.28</version>
        </dependency>
        <dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.9.3</version>
        </dependency>
        <dependency>
            <groupId>commons-collections</groupId>
            <artifactId>commons-collections</artifactId>
            <version>3.2.1</version>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1.1</version>
        </dependency>
        <dependency>
            <groupId>net.sf.ezmorph</groupId>
            <artifactId>ezmorph</artifactId>
            <version>1.0.6</version>
        </dependency>
        <dependency>
        <groupId>net.sf.json-lib</groupId>
        <artifactId>json-lib</artifactId>
        <version>2.2.3</version>
        <classifier>jdk15</classifier>
        </dependency>

二、识别两种方式

方式一：

package com.roncoo.mybatis.generator;

import com.alibaba.fastjson.JSON;
import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import net.sf.json.JSONObject;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author ZhangRF
 */
public class JianSuo {

    public static String getJsonData(JSONObject jsonParam, String urls, String access_token) {
        StringBuffer sb=new StringBuffer();
        urls += access_token;
        try {
            // 创建url资源
            URL url = new URL(urls);
            // 建立http连接
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            // 设置允许输出
            conn.setDoOutput(true);
            // 设置允许输入
            conn.setDoInput(true);
            // 设置不用缓存
            conn.setUseCaches(false);
            // 设置传递方式
            conn.setRequestMethod("POST");
            // 设置维持长连接
            conn.setRequestProperty("Connection", "Keep-Alive");
            // 设置文件字符集:
            conn.setRequestProperty("Charset", "UTF-8");
            // 转换为字节数组
            byte[] data = (jsonParam.toString()).getBytes();
            // 设置文件长度
            conn.setRequestProperty("Content-Length", String.valueOf(data.length));
            // 设置文件类型:
            conn.setRequestProperty("contentType", "application/json");
            // 开始连接请求
            conn.connect();
            OutputStream out = new DataOutputStream(conn.getOutputStream()) ;
            // 写入请求的字符串
            out.write((jsonParam.toString()).getBytes());
            out.flush();
            out.close();
            // 请求返回的状态
            if (HttpURLConnection.HTTP_OK == conn.getResponseCode()){
                // 请求返回的数据
                InputStream in1 = conn.getInputStream();
                try {
                    String readLine=new String();
                    BufferedReader responseReader=new BufferedReader(new InputStreamReader(in1,"UTF-8"));
                    while((readLine=responseReader.readLine())!=null){
                        sb.append(readLine).append("
");
                    }
                    responseReader.close();
                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sb.toString();
    }
    public static void main(String[] args) throws Exception {
        //定义二维码的参数
        HashMap hints = new HashMap();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        //L级：约可纠错7%的数据码字,M级：约可纠错15%的数据码字,Q级：约可纠错25%的数据码字,H级：约可纠错30%的数据码字
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.Q);
        hints.put(EncodeHintType.MARGIN, 2);

        Path file = new File("C:\Users\Administrator\Desktop\123.jpg").toPath();
        MultiFormatReader formatReader = new MultiFormatReader();
        BufferedImage image = ImageIO.read(file.toFile());
        BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));
        Result result = formatReader.decode(binaryBitmap, hints);
        System.out.println("二维码解析结果：" + result.toString());
        System.out.println("二维码的格式：" + result.getBarcodeFormat());
        System.out.println("二维码的文本内容：" + result.getText());

        Map<String,Object> map = new HashMap<>();
        map.put("begin_date","2018-11-01");
        map.put("end_date","2018-11-01");
//        String outStr = JsonUtil.mapToJson(map);
        //map转json对象
        String outStr = JSON.toJSONString(map);
        String s = getJsonData(JSONObject.fromObject(outStr),
                result.toString(),
                "access_token");
//        Map maps=(Map) JSON.parse(s);
        System.out.println(s);
//        System.out.println(maps.get("list").toString());
//        List<Map<String, Object>> mapList = JsonUtil.parseJSONList(maps.get("list").toString());
    }
}

方式二、

package com.roncoo.mybatis.generator;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
/**
 * 通过URL读取页面内容
 * */

public class MyClass {

    public static void main(String[] args){

        System.out.println("hello world !!!");

        try {
            //创建一个URL实例
            URL url = new URL("https://weixin110.qq.com/s/06906701888");

            try {
                //通过URL的openStrean方法获取URL对象所表示的自愿字节输入流
                InputStream is = url.openStream();
                InputStreamReader isr = new InputStreamReader(is,"utf-8");

                //为字符输入流添加缓冲
                BufferedReader br = new BufferedReader(isr);
                String data = br.readLine();//读取数据

                while (data!=null){//循环读取数据
                    System.out.println(data);//输出数据
                    data = br.readLine();
                }
                br.close();
                isr.close();
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
    }
}