SpringBoot学习：IDEA中快速搭建springboot项目

项目下载地址：http://download.csdn.net/detail/aqsunkai/9805821

（一）IDEA中创建maven web项目

创建好项目后设置项目的编译路径：

（二）引入spring-boot项目所需的jar包：

<parent>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-parent</artifactId>    <version>1.5.2.RELEASE</version>    <relativePath/>  </parent>  <properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>    <java.version>1.8</java.version>    <spring-boot.version>1.5.2.RELEASE</spring-boot.version>  </properties>  <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>3.8.1</version>      <scope>test</scope>    </dependency>    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot -->    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot</artifactId>      <version>${spring-boot.version}</version>    </dependency>    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter -->    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter</artifactId>      <version>${spring-boot.version}</version>    </dependency>    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->    <!-- spring-web, spring-webmvc Spring WebMvc框架 -->    <!-- tomcat-embed-* 内嵌Tomcat容器 -->    <!-- jackson 处理json数据 -->    <!-- spring-* Spring框架 -->    <!-- spring-boot-autoconfigure Spring Boot提供的自动配置功能 -->    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-web</artifactId>      <version>${spring-boot.version}</version>      <!--<exclusions>        <exclusion>          <groupId>org.springframework.boot</groupId>          <artifactId>spring-boot-starter-tomcat</artifactId>        </exclusion>      </exclusions>-->    </dependency>    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-test</artifactId>      <version>${spring-boot.version}</version>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-tomcat</artifactId>      <version>${spring-boot.version}</version>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-actuator</artifactId>      <version>${spring-boot.version}</version>    </dependency>  </dependencies>  <build>    <finalName>springBoot</finalName>    <plugins>      <plugin>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-maven-plugin</artifactId>      </plugin>    </plugins>  </build>

（三）配置文件、启动类：

项目路径如下：

application.yml配置文件中内容为：

#serverserver:  # 项目contextPath，一般在正式发布版本中，我们不配置  context-path: /boot  # 该服务绑定IP地址，启动服务器时如本机不是该IP地址则抛出异常启动失败，只有特殊需求的情况下才配置  #address: 192.168.0.101  # 错误页，指定发生错误时，跳转的URL。请查看BasicErrorController源码便知  error:     path: /error  # 服务端口  port: 8080  # session最大超时时间(分钟)，默认为30  session:    timeout: 60  tomcat:    # tomcat的URI编码    uri-encoding: utf-8    # tomcat最大线程数，默认为200    max-threads: 1000    # 存放Tomcat的日志、Dump等文件的临时文件夹，默认为系统的tmp文件夹（如：C:\Users\Shanhy\AppData\Local\Temp）    basedir: G:/springboot-tomcat-tmp    # 打开Tomcat的Access日志，并可以设置日志格式的方法：    #server.tomcat.access-log-enabled=true    #server.tomcat.access-log-pattern=

Application.java启动类如下,spring会扫描该类所在目录下的java类：

package com.sun;import org.springframework.boot.CommandLineRunner;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;/** * @Configuration：标注此文件为一个配置项 * @EnableAutoConfiguration：使用自动配置 * @ComponentScan：可扫描的 * @SpringBootApplication 包含上面三个 * Application：启动管理器 * Created by sun on 2017-1-14. */@SpringBootApplicationpublic class Application implements CommandLineRunner {    /* Servlet容器默认的Context路径是/    DispatherServlet匹配的路径(servlet-mapping中的url-patterns)是*//*    @ComponentScan路径被默认设置为SampleController的同名package，    也就是该package下的所有@Controller，@Service, @Component, @Repository都会被实例化后并加入Spring Context中。*/    public static void main(String[] args) {        SpringApplication springApplication = new SpringApplication(Application.class);        springApplication.run(args);    }    // springboot运行后此方法首先被调用    // 实现CommandLineRunner抽象类中的run方法    @Override    public void run(String... args) throws Exception {        System.out.println("项目启动完成！");    }}

TestController类：

package com.sun.test.controller;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import javax.servlet.http.HttpServletRequest;/** * 测试类 * Created by sun on 2017-1-14. */@Controller@RequestMapping("/test")public class TestController {    @RequestMapping("/")    @ResponseBody    String test(HttpServletRequest req){        return "Hello World!";    }}

启动Application，在页面上输入http://localhost:8080/boot/test/ 页面上打印出Hello World!