[BAEL-17473] - Initial commit

spring-boot-artifacts/src/main/java/com/baeldung/properties/ConfProperties.java

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+package com.baeldung.properties;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ConfProperties {
+
+    @Value("${db.url}")
+    private String url;
+    
+    @Value("${db.username}")
+    private String username;
+    
+    @Value("${db.password}")
+    private String password;
+
+    public String getUrl() {
+        return url;
+    }
+
+    public void setUrl(String url) {
+        this.url = url;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    
+}

spring-boot-artifacts/src/main/java/com/baeldung/properties/ExternalPropertyConfigurer.java

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+package com.baeldung.properties;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
+import org.springframework.core.io.FileSystemResource;
+
+@Configuration
+public class ExternalPropertyConfigurer {
+
+    @Bean
+    public PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
+        PropertySourcesPlaceholderConfigurer properties = new PropertySourcesPlaceholderConfigurer();
+        properties.setLocation(new FileSystemResource("src/main/resources/external/conf.properties"));
+        properties.setIgnoreResourceNotFound(false);
+        return properties;
+    }
+}

spring-boot-artifacts/src/main/java/com/baeldung/properties/ExternalPropertyFileLoader.java

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+package com.baeldung.properties;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+
+@SpringBootApplication
+public class ExternalPropertyFileLoader {
+
+    @Autowired
+    ConfProperties prop;
+
+    public static void main(String[] args) {
+        new SpringApplicationBuilder(ExternalPropertyFileLoader.class).build()
+        .run(args);
+    }
+
+}

spring-boot-artifacts/src/main/java/com/baeldung/webjar/TestController.java

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+package com.baeldung.webjar;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class TestController {
+
+    @GetMapping(value = "/")
+    public String welcome(Model model) {
+        return "index";
+    }
+
+}

spring-boot-artifacts/src/main/java/com/baeldung/webjar/WebjarsdemoApplication.java

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+package com.baeldung.webjar;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class WebjarsdemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(WebjarsdemoApplication.class, args);
+    }
+}

spring-boot-artifacts/src/main/resources/application.properties

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+spring.main.allow-bean-definition-overriding=true

spring-boot-artifacts/src/main/resources/external/conf.properties

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+db.url=jdbc:postgresql://localhost:5432/
+db.username=admin
+db.password=root
+spring.main.allow-bean-definition-overriding=true

spring-boot-artifacts/src/main/resources/logback.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

spring-boot-artifacts/src/main/resources/templates/index.html

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+<html>
+<head>
+	<title>WebJars Demo</title>
+	<link rel="stylesheet" href="/webjars/bootstrap/3.3.7-1/css/bootstrap.min.css" />
+</head>
+<body>
+	<h1>Welcome Home</h1>
+	<div class="container"><br/>
+		<div class="alert alert-success">
+		  <a href="#" class="close" data-dismiss="alert" aria-label="close">×</a>
+		  <strong>Success!</strong> It is working as we expected.
+		</div>
+	</div>
+
+<script src="/webjars/jquery/3.1.1/jquery.min.js"></script>
+<script src="/webjars/bootstrap/3.3.7-1/js/bootstrap.min.js"></script>
+
+</body>
+</html>

spring-boot-artifacts/src/test/java/com/baeldung/properties/ExternalPropertyFileLoaderIntegrationTest.java

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+package com.baeldung.properties;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.IOException;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest(classes = ExternalPropertyFileLoader.class)
+public class ExternalPropertyFileLoaderIntegrationTest {
+
+    @Autowired
+    ConfProperties props;
+
+    @Test
+    public void whenExternalisedPropertiesLoaded_thenReadValues() throws IOException {
+        assertEquals("jdbc:postgresql://localhost:5432/", props.getUrl());
+        assertEquals("admin", props.getUsername());
+        assertEquals("root", props.getPassword());
+    }
+
+}

spring-boot-artifacts/src/test/java/com/baeldung/webjar/WebjarsdemoApplicationIntegrationTest.java

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+package com.baeldung.webjar;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest(classes = WebjarsdemoApplication.class)
+@WebAppConfiguration
+public class WebjarsdemoApplicationIntegrationTest {
+
+    @Test
+    public void contextLoads() {
+    }
+
+}