更新 hello world 的 README.md

spring-boot-demo-helloworld/README.md

@@ -0,0 +1,55 @@
+# spring-boot-demo-helloworld
+
+依赖 [spring-boot-demo-helloworld](../spring-boot-demo-parent)
+
+SpringBootDemoHelloworldApplication.java
+
+```java
+@RestController
+@SpringBootApplication
+@Configuration
+public class SpringBootDemoHelloworldApplication {
+	@Value("${spring.boot.demo.helloworld.data.version}")
+	private String version;
+
+	public static void main(String[] args) {
+		SpringApplication.run(SpringBootDemoHelloworldApplication.class, args);
+	}
+
+	@GetMapping("/hello")
+	public Map sayHello(@Value("${author}") String author, @Value("${exclusions}") String exclusions, @Value("${connectionProperties}") String connectionProperties) {
+		Map<String, Object> result = Maps.newHashMap();
+		result.put("ret", true);
+		result.put("msg", StrUtil.format("hello,world,{}", author));
+		Map<String, Object> data = Maps.newHashMap();
+		data.put("version", version);
+		data.put("exclusions", exclusions.split(","));
+		Map<String, Object> connectionProperty = Maps.newHashMap();
+		for (String connection : connectionProperties.split(";")) {
+			String[] conn = connection.split("=");
+			connectionProperty.put(conn[0], conn[1]);
+		}
+		data.put("connectionProperties", connectionProperty);
+		result.put("data", data);
+		return result;
+	}
+}
+```
+
+application.yml
+
+```yml
+server:
+  port: 8080
+  context-path: /demo
+spring:
+  boot:
+    demo:
+      helloworld:
+        data:
+          version: 1.0.0
+author: xkcoding
+exclusions: "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*"
+connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
+```
+