<dependency>
  <groupId>com.github.binarywang</groupId>
  <artifactId>weixin-java-miniapp</artifactId>
  <version>3.5.0</version>
</dependency>

<dependency>
  <groupId>com.github.binarywang</groupId>
  <artifactId>weixin-java-common</artifactId>
  <version>3.5.0</version>
</dependency>

  @ApiOperation("生成二維碼")
  @ApiImplicitParams({
      @ApiImplicitParam(name="codeType",value = "類型",dataType = "String",required = true,paramType = "query"),
      @ApiImplicitParam(name="parameterValue",value = "參數(shù)值",dataType = "String",required = true,paramType = "query")
  })
  @GetMapping(value = "/createQrCode")
  public String createQrCode(@RequestParam("codeType") String codeType,
                @RequestParam("parameterValue") String parameterValue) throws HttpProcessException, IOException {
	//調(diào)用工具包的服務(wù)
    WxMaService wxMaService = new WxMaServiceImpl();
    WxMaDefaultConfigImpl wxMaDefaultConfigImpl = new WxMaDefaultConfigImpl();
    wxMaDefaultConfigImpl.setAppid(WxConfig.appid);		//小程序appId
    wxMaDefaultConfigImpl.setSecret(WxConfig.secret);	//小程序secret
    wxMaService.setWxMaConfig(wxMaDefaultConfigImpl);

    // 設(shè)置小程序二維碼線條顏色為黑色
    WxMaCodeLineColor lineColor = new WxMaCodeLineColor("0", "0", "0");
    byte[] qrCodeBytes = null;
    try {
	  //其中codeType以及parameterValue為前端頁面所需要接收的參數(shù)。
      qrCodeBytes = wxMaService.getQrcodeService().createWxaCodeBytes("pages/index/index?codeType=" + codeType + "&parameterValue=" + parameterValue, 30, false, lineColor, false);
    } catch (WxErrorException e) {
      e.printStackTrace();
    }
    String qrCodeStr= Base64.encodeBase64String(qrCodeBytes);
    return qrCodeStr;
  }