[WIP]feat: Add a preview service demo

example-preview-service/.gitignore

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+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

example-preview-service/pom.xml

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+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.6.7</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>io.mosn.layotto</groupId>
+    <artifactId>example-preview-service</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>example-preview-service</name>
+    <description>example-preview-service</description>
+    <properties>
+        <java.version>1.8</java.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>io.mosn.layotto</groupId>
+            <artifactId>layotto-sdk-springboot</artifactId>
+            <version>1.1.0</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

example-preview-service/src/main/java/io/mosn/layotto/preview/PreviewApplication.java

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+package io.mosn.layotto.preview;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class PreviewApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(PreviewApplication.class, args);
+    }
+
+}

example-preview-service/src/main/java/io/mosn/layotto/preview/controller/PingController.java

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+package io.mosn.layotto.preview.controller;
+
+import io.mosn.layotto.preview.domain.vo.BookCoverResponse;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class PingController {
+
+    @GetMapping("/ping")
+    public String ping() {
+        return "pong";
+    }
+
+}

example-preview-service/src/main/java/io/mosn/layotto/preview/controller/PreviewController.java

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+package io.mosn.layotto.preview.controller;
+
+import io.mosn.layotto.preview.domain.vo.BookCoverResponse;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class PreviewController {
+
+    @GetMapping("/book/cover")
+    public BookCoverResponse index() {
+        return new BookCoverResponse("test");
+    }
+}

example-preview-service/src/main/java/io/mosn/layotto/preview/domain/vo/BookCoverResponse.java

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+package io.mosn.layotto.preview.domain.vo;
+
+public class BookCoverResponse {
+    private String imageUrl;
+
+    public BookCoverResponse(String imageUrl) {
+        this.imageUrl = imageUrl;
+    }
+
+    /**
+     * Getter method for property <tt>imageUrl</tt>.
+     *
+     * @return property value of imageUrl
+     */
+    public String getImageUrl() {
+        return imageUrl;
+    }
+
+    /**
+     * Setter method for property <tt>imageUrl</tt>.
+     *
+     * @param imageUrl value to be assigned to property imageUrl
+     */
+    public void setImageUrl(String imageUrl) {
+        this.imageUrl = imageUrl;
+    }
+}

example-preview-service/src/main/resources/application.properties

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+

example-preview-service/src/main/resources/static/index.html

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+<!DOCTYPE HTML>
+<html>
+<head>
+    <title>Preview service</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+</head>
+<body>
+<p>This preview service aims to show you how to play with Layotto </p>
+</body>
+</html>

example-preview-service/src/test/java/io/mosn/layotto/example/preview/PreviewApplicationTests.java

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+package io.mosn.layotto.example.preview;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class PreviewApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}