前言

微信后臺生成海報一般都是一個模板寫死，然后就完事了，過了不久讓修改個模板，就又要看半天，還要考慮是否重新復制一份改一改，越來越多的重復代碼，全在一個圖片類里，然后就越來越亂。這兩天用設計模式處理了一下，讓以后修改模板，新增模板更舒服一點。有第三方好用的輕量級的實現，還請留言。感激！！
博客園鏈接

效果圖

簡單注解實現繪制

基于java8 和 lombok 的小輪子

前往github star支持

Maven 引入【github直接clone源碼，更方便定制修改】

<!-- https://mvnrepository.com/artifact/com.github.quaintclever/easyposter --> <dependency><groupId>com.github.quaintclever</groupId><artifactId>easyposter</artifactId><version>1.2</version> </dependency>

Gradle

// https://mvnrepository.com/artifact/com.github.quaintclever/easyposter compile group: 'com.github.quaintclever', name: 'easyposter', version: '1.2'

海報定義類

/*** @author quaint* @date 30 March 2020* @since 1.0*/ @EqualsAndHashCode(callSuper = true) @Data @Builder public class SamplePoster extends AbstractDefaultPoster {/*** 背景圖*/@PosterBackground(width = 666,height = 365)private BufferedImage backgroundImage;/*** 頭像*/@PosterImageCss(position = {27,27},width = 36, height = 36, circle = true)private BufferedImage head;/*** 昵稱*/@PosterFontCss(position = {71,32}, color = {255,255,255})private String nickName;/*** 廣告語*/@PosterFontCss(position = {27,70},center = true, size = 22, color = {255,255,255}, canNewLine={1,221,7})private String slogan;/*** 主圖*/@PosterImageCss(position = {27,172},width = 168,height = 168)private BufferedImage mainImage;@Toleratepublic SamplePoster() {} }

海報繪制

/*** 繪制海報本地測試* @author quaint* @date 21 February 2020* @since 1.0*/ public class PosterTest {public static void main(String[] args) throws Exception{// 測試,圖片添加到resources/image下 ClassPathResource 需要引入springBufferedImage background = ImageIO.read(new ClassPathResource("image/yayi.png").getInputStream());BufferedImage head = ImageIO.read(new ClassPathResource("image/headimage.jpg").getInputStream());SamplePoster poster = SamplePoster.builder().backgroundImage(background).head(head).nickName("Quaint").slogan("命運多舛，癡迷淡然。揮別了青春，數不盡的車站。甘于平凡，卻不甘平凡地潰敗。").mainImage(head).build();PosterDefaultImpl<SamplePoster> impl = new PosterDefaultImpl<>();BufferedImage test = impl.annotationDrawPoster(poster).draw(null);ImageIO.write(test,"png",new FileOutputStream("annTest.png"));} }

總結

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