Spring Boot 快速配置

Spring Boot应用的快速构建

本文使用Maven方式快速构建Spring Boot应用

几分钟教程

这里, 我借助IDEA快速建立一个maven项目 (你也可以通过手动或者eclipse创建)

1.1 New Project

1.1.1 创建一个新项目, 使用maven的方式

1.1.2 填写一些应用相关的信息, GroupId, ArtifactId

1.1.3 填写项目保存的本地路径, 点击Finish

1.1.4 如上操作, 创建完成一个空的Maven项目

1.2 引入Spring Boot的依赖

1.2.1 编辑pom.xml文件

<?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>info.chiwm</groupId>
    <artifactId>log4j2</artifactId>
    <version>1.0-SNAPSHOT</version>

    <!--  映入spring boot 依赖 -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
</project>

1.2.2 编写项目启动的主入口代码

在 ./src/java/main 目录新建目录, 例如 info/chiwm/boot . 所有的代码都在该目录下编辑, 这里定义为 代码根目录

创建java文件 Application.java 作为入口文件, 编码如下

package info.chiwm.boot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * @author chiwm@kuyumall.com
 * @ClassName: Application
 * @Description:
 * @date 2018/1/3 上午11:29
 */
@SpringBootApplication(scanBasePackages = "info.chiwm.log4j2")
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

可以直接 Application.java 中编写 controller 业务逻辑并且启动.

1.2.3 编写 controller 层业务逻辑

但这里我将 controller 模块的逻辑编排在相对应的目录下, 可以使示例代码组织得更加明了

在 `代码根目录` 下创建目录 `controller`, 在该目录下创建示例controller , `JsonController.java`

package info.chiwm.boot.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author wanminchi@gmail.com
 * @ClassName: JsonController
 * @Description:
 * @date 2018/1/3 下午1:11
 */

@RestController
@RequestMapping("/json")
public class JsonController {

    @RequestMapping(value = "/get", method = RequestMethod.GET)
    @ResponseBody
    public String getJson(HttpServletRequest req, HttpServletResponse res) {
        return "{/"name/":/"chi/"}";
    }
}

1.3 启动项目

在IDEA中, RUN Application.java即可启动.

.   ____          _            __ _ _
 /// / ___'_ __ _ _(_)_ __  __ _ / / / /
( ( )/___ | '_ | '_| | '_ // _` | / / / /
 ///  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_/__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.5.9.RELEASE)

2018-01-03 13:35:23.092  INFO 78070 --- [           main] info.chiwm.boot.Application              : Starting Application on chiwanmindeMacBook-Pro.local with PID 78070 (/Users/chiwanmin/code/java/boot/target/classes started by chiwanmin in /Users/chiwanmin/code/java/boot)
2018-01-03 13:35:23.096  INFO 78070 --- [           main] info.chiwm.boot.Application              : No active profile set, falling back to default profiles: default
2018-01-03 13:35:23.192  INFO 78070 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@74a10858: startup date [Wed Jan 03 13:35:23 CST 2018]; root of context hierarchy
2018-01-03 13:35:25.083  INFO 78070 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2018-01-03 13:35:25.092  INFO 78070 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2018-01-03 13:35:25.093  INFO 78070 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.23
2018-01-03 13:35:25.155  INFO 78070 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-01-03 13:35:25.155  INFO 78070 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1968 ms
2018-01-03 13:35:25.258  INFO 78070 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/]
2018-01-03 13:35:25.261  INFO 78070 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-01-03 13:35:25.261  INFO 78070 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-01-03 13:35:25.261  INFO 78070 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-01-03 13:35:25.261  INFO 78070 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2018-01-03 13:35:25.645  INFO 78070 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@74a10858: startup date [Wed Jan 03 13:35:23 CST 2018]; root of context hierarchy
2018-01-03 13:35:25.712  INFO 78070 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/json/get],methods=[GET]}" onto public java.lang.String info.chiwm.boot.controller.JsonController.getJson(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-01-03 13:35:25.715  INFO 78070 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" 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)
2018-01-03 13:35:25.715  INFO 78070 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-01-03 13:35:25.740  INFO 78070 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-01-03 13:35:25.741  INFO 78070 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-01-03 13:35:25.776  INFO 78070 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-01-03 13:35:25.912  INFO 78070 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2018-01-03 13:35:25.993  INFO 78070 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2018-01-03 13:35:25.999  INFO 78070 --- [           main] info.chiwm.boot.Application              : Started Application in 3.522 seconds (JVM running for 4.575)
2018-01-03 13:55:15.625  INFO 78070 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'
2018-01-03 13:55:15.626  INFO 78070 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started
2018-01-03 13:55:15.660  INFO 78070 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 34 ms

服务端启动, Maven方式打包, 命令启动也可..

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