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：

#server
server:
  # 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:UsersShanhyAppDataLocalTemp）
    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.
 */
@SpringBootApplication
public 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!