Spring Boot 快速配置

Spring Boot 快速配置
Spring Boot應用的快速構建

本文使用Maven方式快速構建Spring Boot應用

幾分鐘教程

這裡, 我藉助IDEA快速建立一個maven項目 (你也可以通過手動或者eclipse建立)

1.1 New Project1.1.1 建立一個新項目, 使用maven的方式

1.1.2 填寫一些應用相關的資訊, GroupId, ArtifactId

1.1.3 填寫項目儲存的本地路徑, 點擊Finish

1.1.4 如上操作, 建立完成一個空的Maven項目

1.2 引入Spring Boot的依賴1.2.1 編輯pom.xml檔案

<?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 依賴 -->    <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 編寫項目啟動的主入口代碼

在 ./src/java/main 目錄建立目錄, 例如 info/chiwm/boot . 所有的代碼都在該目錄下編輯, 這裡定義為 代碼根目錄

建立java檔案 Application.java 作為入口檔案, 編碼如下

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中編寫controller商務邏輯並且啟動.

1.2.3 編寫 controller 層商務邏輯

但這裡我將controller模組的邏輯編排在相對應的目錄下, 可以使範例程式碼組織得更加明了

在 `代碼根目錄` 下建立目錄 `controller`, 在該目錄下建立樣本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 啟動項目

在IDEA中, RUN Application.java即可啟動.

  .   ____          _            __ _ _ /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/  ___)| |_)| | | | | || (_| |  ) ) ) )  '  |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: 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: default2018-01-03 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 hierarchy2018-01-03 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/8.5.232018-01-03 13:35:25.155  INFO 78070 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext2018-01-03 13:35:25.155  INFO 78070 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1968 ms2018-01-03 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 hierarchy2018-01-03 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 startup2018-01-03 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 started2018-01-03 13:55:15.660  INFO 78070 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 34 ms

服務端啟動, Maven方式打包, 命令啟動也可..