spring boot使用
首先spring-boot是个服务框架，更加准确来讲是个微服务框架，实际上来说”微“并不“微”，spring-boot包含很多可嵌入的组件，通过这些组件可以来完成我们的服务，以往我们使用Spring的时候，我们需要首先在pom文件中增加对相关的的依赖（使用gradle也是类似）然后新建Spring相关的配置文件而通常是xml，然后后面加入jetty\tomcat，而现在我们通过spring-boot就可以完成我们这些繁杂的事情，下面来介绍下如何使用spring-boot:
1）首先是我们的pom.xml依赖：
<?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">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>sping_boot_test</artifactId>
<version>0.0.1-SNAPSHOT</version>
<!-- Inherit defaults from Spring Boot -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.BUILD-SNAPSHOT</version>
</parent>
<!-- Add typical dependencies for a web application -->
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<!-- Package as an executable jar -->
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<!-- Add Spring repositories -->
<!-- (you don't need this if you are using a .RELEASE version) -->
<repositories>
<repository>
<id>spring-snapshots</id>
<url>http://repo.spring.io/snapshot</url>
<snapshots><enabled>true</enabled></snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<url>http://repo.spring.io/milestone</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<url>http://repo.spring.io/snapshot</url>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<url>http://repo.spring.io/milestone</url>
</pluginRepository>
</pluginRepositories>
</project>
View Code 2）然后就可以写我们的代码了：
启动类：
package Example;
import org.springframework.boot.SpringApplication;
//import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
//import org.springframework.context.annotation.ComponentScan;
//import org.springframework.context.annotation.Configuration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
//@Configuration
//@EnableAutoConfiguration
//@ComponentScan
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
View Code controler类：
package Example;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping(value="users")
public class MyRestController {
@RequestMapping("/")
String home(){
return "Hello World!";
}
@RequestMapping("/test")
String test(){
return "Hello test!";
}
}
View Code
package Example;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class Example {
@RequestMapping("/")
String home(){
return "Hello World!";
}
@RequestMapping("/test")
String test(){
return "Hello test!";
}
}
View Code 3）启动与运行：
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ ____ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/___)| |_)| | | | | || (_| |) ) ) )
'|____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot ::(v1.4.0.BUILD-SNAPSHOT)
2016-06-04 00:06:11.194INFO 91890 --- [ main] Example.Application : Starting Application on adeMacBook-Pro.local with PID 91890 (/Users/apple/Documents/JavaDemoWorkSpace/spring_boot_test/target/classes started by apple in /Users/apple/Documents/JavaDemoWorkSpace/spring_boot_test)
2016-06-04 00:06:11.199INFO 91890 --- [ main] Example.Application : No active profile set, falling back to default profiles: default
2016-06-04 00:06:11.312INFO 91890 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@3b1dd4fb: startup date ; root of context hierarchy
2016-06-04 00:06:13.117INFO 91890 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2016-06-04 00:06:13.140INFO 91890 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2016-06-04 00:06:13.142INFO 91890 --- [ main] org.apache.catalina.core.StandardEngine: Starting Servlet Engine: Apache Tomcat/8.0.33
2016-06-04 00:06:13.316INFO 91890 --- o.a.c.c.C...[/] : Initializing Spring embedded WebApplicationContext
2016-06-04 00:06:13.316INFO 91890 --- o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2008 ms
2016-06-04 00:06:13.743INFO 91890 --- o.s.b.w.servlet.ServletRegistrationBean: Mapping servlet: 'dispatcherServlet' to [/]
2016-06-04 00:06:13.748INFO 91890 --- o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2016-06-04 00:06:13.748INFO 91890 --- o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2016-06-04 00:06:13.748INFO 91890 --- o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2016-06-04 00:06:13.749INFO 91890 --- o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2016-06-04 00:06:14.000INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@3b1dd4fb: startup date ; root of context hierarchy
2016-06-04 00:06:14.155INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto java.lang.String Example.Example.home()
2016-06-04 00:06:14.157INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{}" onto java.lang.String Example.Example.test()
2016-06-04 00:06:14.160INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{}" onto java.lang.String Example.MyRestController.home()
2016-06-04 00:06:14.161INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{}" onto java.lang.String Example.MyRestController.test()
2016-06-04 00:06:14.165INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2016-06-04 00:06:14.165INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{,produces=}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2016-06-04 00:06:14.299INFO 91890 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping: Mapped URL path onto handler of type
2016-06-04 00:06:14.299INFO 91890 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping: Mapped URL path [/**] onto handler of type
2016-06-04 00:06:14.387INFO 91890 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping: Mapped URL path [/**/favicon.ico] onto handler of type
2016-06-04 00:06:14.969INFO 91890 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2016-06-04 00:06:15.070INFO 91890 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2016-06-04 00:06:15.077INFO 91890 --- [ main] Example.Application : Started Application in 4.612 seconds (JVM running for 5.156)
访问应用：
http://127.0.0.1:8080/users/test
参考：
http://docs.spring.io/
https://github.com/spring-projects/spring-boot
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