Spring Boot集成easyposter快速入门Demo

1.什么是easyposter？

easyposter是一个简单的,便于扩展的绘制海报工具包

使用场景

在日常工作过程中，通常一些C端平台会伴随着海报生成与分享业务。因为随着移动互联网的迅猛发展，社交分享已成为我们日常生活的重要组成部分。海报分享作为一种直观、生动的分享方式，被广泛应用于各类应用场景中，如产品推广、活动宣传、内容分享等。本文主要介绍通过Java进行海报生成的原理解析与代码示例。

2.代码工程

实验目的

使用easyposter生成一张文章海报图

pom.xml

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <parent>        <artifactId>springboot-demo</artifactId>        <groupId>com.et</groupId>        <version>1.0-SNAPSHOT</version>    </parent>    <modelVersion>4.0.0</modelVersion>
    <artifactId>poster</artifactId>
    <properties>        <maven.compiler.source>11</maven.compiler.source>        <maven.compiler.target>11</maven.compiler.target>    </properties>    <dependencies>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>        </dependency>
        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-autoconfigure</artifactId>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-test</artifactId>            <scope>test</scope>        </dependency>        <dependency>            <groupId>com.github.quaintclever</groupId>            <artifactId>easyposter</artifactId>            <version>1.2</version>        </dependency>        <dependency>            <groupId>org.projectlombok</groupId>            <artifactId>lombok</artifactId>        </dependency>    </dependencies></project>

controller

package com.et.poster.controller;
import com.et.poster.service.PosterUtil;import org.springframework.http.MediaType;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException;import java.io.OutputStream;import java.util.HashMap;import java.util.Map;
@RestControllerpublic class HelloWorldController {    @RequestMapping("/hello")    public Map<String, Object> showHelloWorld(){        Map<String, Object> map = new HashMap<>();        map.put("msg", "HelloWorld");        return map;    }   @RequestMapping(path = "/genPoster",produces = MediaType.IMAGE_PNG_VALUE)   @ResponseBody   public byte[] genposterpng( HttpServletRequest request,         HttpServletResponse response) {      try {         byte[] bytes = PosterUtil.test();          OutputStream out = null;         try {            out = response.getOutputStream();            out.write(bytes);              out.flush();         } catch (IOException ex) {            ex.printStackTrace();         }         return null;      } catch (Exception e) {         e.printStackTrace();         return null;      }   }}

生成海报工具类

package com.et.poster.service;

import com.quaint.poster.core.impl.PosterDefaultImpl;import lombok.extern.slf4j.Slf4j;
import javax.imageio.ImageIO;import java.awt.*;import java.awt.image.BufferedImage;import java.io.*;import java.net.URL;import java.util.Random;
/** * @author quaint * @date 21 February 2020 * @since 1.0 */@Slf4jpublic class PosterUtil {   public static String ossDomain="http://qdliuhaihua.oss-cn-qingdao-internal.aliyuncs.com/";
    public static void main(String[] args) throws Exception{      //String in1pathString = PosterUtil.class.getResource("/static/css/fonts/simkai.ttf").getFile();      //System.out.printf(in1pathString);      test();
    }
   public   static  byte[] test() throws IOException, IllegalAccessException, FontFormatException {      BufferedImage background = ImageIO.read(new URL("http://image.liuhaihua.cn/bg.jpg"));      File file2=  new File("/Users/liuhaihua/Downloads/2.jpg");      BufferedImage mainImage = ImageIO.read(file2);      BufferedImage siteSlogon = ImageIO.read(new URL("http://image.liuhaihua.cn/site.jpg"));      BufferedImage xx = ImageIO.read(new URL("http://image.liuhaihua.cn/xx.jpg"));      File file5=  new File("/Users/liuhaihua/IdeaProjects/springboot-demo/poster/src/main/resources/image/wx_300px.png");

      BufferedImage qrcode = ImageIO.read(file5);      SamplePoster poster = SamplePoster.builder()            .backgroundImage(background)            .postQrcode(qrcode)            .xuxian(xx)            .siteSlogon(siteSlogon)            .postTitle("Java generate poster in 5 miniutes")            .postDate("2022年11月14日 pm1:23 Author：Harries")            .posttitleDesc("Demand Background\u200B We often encounter such a demand in multi-terminal application development: when users browse products, they feel good and want to share them with friends. At this time, the terminal (Android, Apple, H5, etc.) generates a beautiful product poster and shares it with others through WeChat or other channels. You may also encounter the demand: make a personal business card and print it out or share it with others. The effect is probably like this: It may also be like this (the above pictures are all mine...")            .mainImage(mainImage)            .build();
      PosterDefaultImpl<SamplePoster> impl = new PosterDefaultImpl<>();      BufferedImage test = impl.annotationDrawPoster(poster).draw(null);      //ImageIO.write(test,"png",new FileOutputStream("/Users/liuhaihua/annTest.png"));      ByteArrayOutputStream stream = new ByteArrayOutputStream();      ImageIO.write(test, "png", stream);      return stream.toByteArray();   }

}

以上只是一些关键代码，所有代码请参见下面代码仓库

代码仓库

• https://github.com/Harries/springboot-demo

3.测试

启动Spring Boot应用程序

测试生成海报

访问http://127.0.0.1:8088/genPoster，返回图片如下图

4.引用

• https://github.com/quaintclever/easyposter

• http://www.liuhaihua.cn/archives/710880.html