本文实例讲述了java实现的生成二维码和解析二维码url操作。分享给大家供大家参考，具体如下：
二维码依赖jar包,zxing
|
1
2
3
4
5
6
|
<!-- 二维码依赖 start -->
<dependency>
<groupid>com.google.zxing</groupid>
<artifactid>javase</artifactid>
<version>3.0.0</version>
</dependency>
|
createqrcode生成二维码，anlysisqrcode解析二维码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
package com.xgt.util;
import com.google.zxing.*;
import com.google.zxing.client.j2se.bufferedimageluminancesource;
import com.google.zxing.client.j2se.matrixtoimagewriter;
import com.google.zxing.common.bitmatrix;
import com.google.zxing.common.hybridbinarizer;
import com.google.zxing.qrcode.decoder.errorcorrectionlevel;
import org.apache.commons.io.ioutils;
import org.slf4j.logger;
import org.slf4j.loggerfactory;
import sun.misc.base64encoder;
import javax.imageio.imageio;
import java.awt.image.bufferedimage;
import java.io.*;
import java.nio.file.path;
import java.util.hashtable;
public class qrcodeutil {
private static final logger logger = loggerfactory.getlogger(qrcodeutil.class);
/**
* 创建二维码
* @param url
* @param filename
* @return
* @throws ioexception
*/
public static string createqrcode(string url,string filedirectory,string filename) throws ioexception {
int width = 500;
int height = 500;
string format = "png";
hashtable hints = new hashtable();
hints.put(encodehinttype.character_set, "utf-8");
hints.put(encodehinttype.error_correction, errorcorrectionlevel.m);
hints.put(encodehinttype.margin, 2);
try {
bitmatrix bitmatrix = new multiformatwriter().encode(url, barcodeformat.qr_code, width, height, hints);
file filedir = new file(filedirectory);
filetoolutil.judedirexists(filedir);
path file = new file(filedirectory,filename+".png").topath();//在d盘生成二维码图片
matrixtoimagewriter.writetopath(bitmatrix, format, file);
bufferedimage image = matrixtoimagewriter.tobufferedimage(bitmatrix);
bytearrayoutputstream os = new bytearrayoutputstream();//新建流。
imageio.write(image, format, os);//利用imageio类提供的write方法，将bi以png图片的数据模式写入流。
byte b[] = os.tobytearray();//从流中获取数据数组。
string str = new base64encoder().encode(b);
ioutils.closequietly(os);
return str;
} catch (exception e) {
// todo auto-generated catch block
e.printstacktrace();
}finally {
//deletefileutil.delete(filedirectory);
}
return "null";
}
/**
* 解析出二维码的url
* 无用
* @param file
* @param filedirectory
* @throws notfoundexception
*/
public static void anlaysisqrcode(file file,string filedirectory) throws notfoundexception {
multiformatreader formatreader=new multiformatreader();
bufferedimage image=null;
try {
image = imageio.read(file);
binarybitmap binarybitmap =new binarybitmap(new hybridbinarizer(new bufferedimageluminancesource(image)));
hashtable hints=new hashtable();
hints.put(encodehinttype.character_set, "utf-8");
result result=formatreader.decode(binarybitmap,hints);
logger.info("解析结果："+result.tostring());
logger.info("解析格式:"+result.getbarcodeformat());
} catch (ioexception e) {
// todo auto-generated catch block
e.printstacktrace();
}finally {
deletefileutil.delete(filedirectory);
}
}
}
|
希望本文所述对大家java程序设计有所帮助。
原文链接：http://www.cnblogs.com/Java-Starter/p/9283513.html