java工具类-生成二维码并保存到本地

pom引入的jar

 
        
        
            com.google.zxing
            core
            3.3.3
        
        
        
            com.google.zxing
            javase
            3.3.3
        

工具类代码

import cn.com.hwqh.user.util.tool.UuidUtil;
import cn.com.hwqh.user.util.utility.MyConfiguration;
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 java.io.File;
import java.nio.file.Path;
import java.util.HashMap;

/**
 * @ClassName: GenerateQrCodeUtil
 * @version: 1.0
 * @description: 二维码工具类
 * @author: zhaonian
 * @create: 2019-10-23 18:44
 **/
public class GenerateQrCodeUtil {
    /**
     * 文件地址
     */
    public static final String FILEPATH = MyConfiguration.create().getString("html.filepath");

    /**
     * 传入文字生成二维码
     * @param content
     * @return
     */
    public static String GenerateQrCodeUtil(String content){
        String s="";
        System.out.println(1234);
        final int width = 300;
        final int height = 300;
        final String format = "png";
        //  final String content = content;
        //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);
        hints.put(EncodeHintType.MARGIN, 2);
        //生成二维码
        try{
            BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
            StringBuilder name=new StringBuilder().append(UuidUtil.get32UUID());
            StringBuilder path =new StringBuilder();
            path.append(FILEPATH);
            path.append(name);
            path.append(".png");
            File f = new File(path.toString());
            // 创建文件夹
            if (!f.exists()) {
                f.mkdirs();
            }
            Path file = new File(path.toString()).toPath();
            MatrixToImageWriter.writeToPath(bitMatrix, format, file);
            //拼接图片地址
            name.append(".png");
            name.insert(0,"/static/inviteCode/");
             s = name.toString();

            return s;
           }catch(Exception e){
               e.printStackTrace();
           }
        return s;
    }

    public static void main(String[] args) {
        //测试
        String s = GenerateQrCodeUtil.GenerateQrCodeUtil("http://47.103.142.74/static/invite.html"+"?inviteCode="+"r7502");
        System.out.println(s);
    }
}

其中 html.filepath 是本地保存的地址
1.电脑本地地址

#===========二维码地址配置===========
#html
html.filepath=E:/huawen/huawen-cloud-parent/src/main/webapp/dev/videos/

2.线上linux地址配置

#===========二维码地址配置===========
#html
html.filepath=/root/huawen-cloud-parent/huawen-cloud-user/src/main/webapp/dev/images/

其中SwaggerConfigure配置类需要配置虚拟路径

  registry.addResourceHandler("/static/inviteCode/**").addResourceLocations("file:"+htmlPath);

完整配置类信息

import cn.com.hwqh.user.loginsecurity.LoginInterceptor;
import com.google.common.base.Predicates;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.ParameterBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.schema.ModelRef;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Parameter;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.ArrayList;
import java.util.List;


/**
 * Swagger2 的配置文件
 * Created by qhs
 */
@Configuration
@EnableSwagger2
@ConditionalOnProperty(
        prefix = "spring.swagger",
        name = {"enabled"},
        matchIfMissing = true,
        havingValue = "true"
)
public class SwaggerConfigure extends WebMvcConfigurationSupport {
    @Autowired
    LoginInterceptor loginInterceptor;

    @Value("${html.filepath}")
    private String htmlPath;

    /**
     * 配置拦截user/下的所有路径
     * @param registry
     */
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
//        registry.addInterceptor(loginInterceptor).addPathPatterns("/user/**");
        //不拦截接口
        registry.addInterceptor(loginInterceptor).addPathPatterns("/**").excludePathPatterns("/login/**").excludePathPatterns("/generate/**").excludePathPatterns("/problem/**").excludePathPatterns("/inquireBack/**");
        super.addInterceptors(registry);
    }


    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/static/inviteCode/**").addResourceLocations("file:"+htmlPath);
        registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
        registry.addResourceHandler("swagger-ui.html")
                .addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/");
    }
    @Bean
    public Docket api(){
        ParameterBuilder t = new ParameterBuilder();
        ParameterBuilder t1 = new ParameterBuilder();
        ParameterBuilder driveid = new ParameterBuilder();
        ParameterBuilder h = new ParameterBuilder();
        ParameterBuilder k = new ParameterBuilder();
        List pars = new ArrayList();
        t.name("t").description("令牌").modelRef(new ModelRef("string")).parameterType("header").required(false).build();
        t1.name("t1").description("临时令牌").modelRef(new ModelRef("string")).parameterType("header").required(false).build();
        h.name("h").description("请求头信息").modelRef(new ModelRef("string")).parameterType("header").required(false).build();
        k.name("k").description("请求头信息").modelRef(new ModelRef("string")).parameterType("header").required(false).build();
        driveid.name("driveid").description("设备号id").modelRef(new ModelRef("string")).parameterType("header").required(false).build();
        pars.add(t.build());
        pars.add(t1.build());
        pars.add(h.build());
        pars.add(k.build());
        pars.add(driveid.build());
        return new Docket(DocumentationType.SWAGGER_2)
                // 选择那些路径和api会生成document
                .select()
                //对所有api进行监控
                .apis(RequestHandlerSelectors.any())
                //配置swagger扫描包路径
                .apis(RequestHandlerSelectors.basePackage("com.user.controller"))
                //错误路径不监控
                .paths(Predicates.not(PathSelectors.regex("/error.*")))
                //actuator路径不监控
                .paths(Predicates.not(PathSelectors.regex("/actuator.*")))//actuator路径不监控
                .build()
                .globalOperationParameters(pars)
                .apiInfo(apiInfo());
    }
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                //页面标题
                .title("个人中心2.0")
                //描述
                .description("服务")
                .termsOfServiceUrl("http://www.test.com")
                //版本号
                .version("1.0")
                .build();
    }




}

访问地址:

{ip}/static/inviteCode/165d656d8988d9898f8.jpg 访问