![](/images/alipay.png)
二维码工具类
hutool工具类
xml
<!--hutool工具类-->
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.7.7</version>
</dependency>
java
import cn.hutool.extra.qrcode.QrCodeUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.OutputStream;
import java.util.Map;
@Slf4j
@Controller
@RequestMapping("api/xcx/")
public class WxControllerApI extends BaseController {
//预支付接口(生成二维码并输出到浏览器)
@GetMapping("codePay" )
@ResponseBody
private void codePay(HttpServletRequest request, HttpServletResponse response) throws Exception {
String codeUrl = "https://blog.share888.top/";
//生成二维码到输出流
response.setContentType("image/jpeg");
ServletOutputStream out = response.getOutputStream();
QrCodeUtil.generate(codeUrl, 300, 300,"jpg" ,out);
out.close();
}
}
谷歌zxing
xml
<!-- google二维码生成包 -->
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.3.0</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>2.0</version>
</dependency>
java
java
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;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
@RestController
@RequestMapping("/test")
@Slf4j
public class TestController {
@GetMapping("qr")
public void saveOrder(HttpServletRequest request, HttpServletResponse response) throws Exception {
String codeUrl = "https://blog.share888.top/";
try{
//生成二维码配置
Map<EncodeHintType,Object> hints = new HashMap<>();
//设置纠错等级
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
//编码类型
hints.put(EncodeHintType.CHARACTER_SET,"UTF-8");
BitMatrix bitMatrix = new MultiFormatWriter().encode(codeUrl, BarcodeFormat.QR_CODE,400,400,hints);
OutputStream out = response.getOutputStream();
MatrixToImageWriter.writeToStream(bitMatrix,"png",out);
}catch (Exception e){
e.printStackTrace();
}
}
}