java二维码生成的方法

本文实例为大家分享了java二维码的实现代码，供大家参考，具体内容如下

这次用到的jar包是zxing，没有用到core的jar包
先导入zxing.jar包

生成二维码

package cn.huse.erweima;

import java.io.file;
import java.util.hashmap;

import com.google.zxing.barcodeformat;
import com.google.zxing.encodehinttype;
import com.google.zxing.multiformatwriter;
import com.google.zxing.client.j2se.matrixtoimagewriter;
import com.google.zxing.common.bitmatrix;
import com.google.zxing.qrcode.decoder.errorcorrectionlevel;

/**
 * 生成二维码
 *
 */
public class createqrcode {

 public static void main(string[] args) {
 int width = 300;
 int height = 300;
 
 string format = "gif";
 string content = "www.baidu.com";
 
 //定义二维码的参数
 hashmap hints = new hashmap<>();
 hints.put(encodehinttype.character_set, "utf-8");
 hints.put(encodehinttype.error_correction, errorcorrectionlevel.m);
 try {
  bitmatrix matrix = new multiformatwriter().encode(content, barcodeformat.qr_code, width, height,hints);
  file file = new file("e:"+file.separator+"new.gif");
  matrixtoimagewriter.writetofile(matrix, format, file);
 } catch (exception e) {
  e.printstacktrace();
 }
 }

}

解析二维码

package cn.huse.erweima;

import java.awt.image.bufferedimage;
import java.io.file;
import java.io.ioexception;
import java.util.hashmap;
import javax.imageio.imageio;
import com.google.zxing.binarybitmap;
import com.google.zxing.encodehinttype;
import com.google.zxing.multiformatreader;
import com.google.zxing.notfoundexception;
import com.google.zxing.result;
import com.google.zxing.client.j2se.bufferedimageluminancesource;
import com.google.zxing.common.hybridbinarizer;

//解析二维码
public class readqrcode {

 public static void main(string[] args) {
 
 multiformatreader formatreader = new multiformatreader();
 file file = new file("e:"+file.separator+"new.gif");
 try {
  bufferedimage image = imageio.read(file);
  binarybitmap binarybitmap = new binarybitmap(new hybridbinarizer(new bufferedimageluminancesource(image)));
  hashmap hints = new hashmap<>();
  hints.put(encodehinttype.character_set, "utf-8");
  
  result result = formatreader.decode(binarybitmap,hints);
  system.out.println(result.tostring());
  system.out.println(result.getbarcodeformat());
  system.out.println(result.gettext());
 } catch (notfoundexception e) {
  e.printstacktrace();
 } catch (ioexception e) {
  e.printstacktrace();
 }
 }

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。