（1）Spring Boot是為了簡(jiǎn)化Spring應(yīng)用的創(chuàng)建交惯、運(yùn)行次泽、調(diào)試、部署等而出現(xiàn)的席爽，使用Spring boot可以做到專注于Spring應(yīng)用的開發(fā)意荤，而無需過多關(guān)注XML的配置；
（2）約定優(yōu)于配置只锻；

一個(gè)基于Spring Boot創(chuàng)建的簡(jiǎn)單web應(yīng)用demo

IDE：IntelliJ Idea／依賴包管理：Maven
（1）pom.xml文件的配置

<?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>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.15</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

（2）程序入口玖像，Spring Boot可以直接把應(yīng)用打包成為一個(gè)jar/war包，然后這個(gè)jar/war包是可以直接啟動(dòng)的齐饮，不需要另外配置一個(gè)Web Server捐寥。

package com.example.demo;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import java.util.ArrayList;
import java.util.List;

@SpringBootApplication
public class DemoApplication extends WebMvcConfigurerAdapter {


    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        super.configureMessageConverters(converters);
        //1.需要定義一個(gè)convert轉(zhuǎn)換消息的對(duì)象;
        ResultConverter fastJsonHttpMessageConverter = new ResultConverter();
        //2.添加fastJson的配置信息，比如：是否要格式化返回的json數(shù)據(jù);
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
        //3處理中文亂碼問題
        List<MediaType> fastMediaTypes = new ArrayList<>();
        fastMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
        //4.在convert中添加配置信息.
        fastJsonHttpMessageConverter.setSupportedMediaTypes(fastMediaTypes);
        fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);
        //5.將convert添加到converters當(dāng)中.
        converters.add(fastJsonHttpMessageConverter);
    }

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
}

（3）接口Controller層祖驱，RESTful API

package com.example.demo;

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

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by haishen on 2017/8/29.
 */
@RestController
public class HelloController {

    @RequestMapping(value = "/hello")
    @ResponseBody
    public Object getHello() {
        Map<String, String> map = new HashMap<>();
        map.put("one", "1");
        map.put("two", "2");
        return map;
    }

    @RequestMapping(value = "/student")
    @ResponseBody
    public Student getStudent() {
        Student student=new Student();
        student.setsId(1);
        student.setsName("hs");
        student.setGender("male");
        student.setCreateTime(new Date());
        return student;
    }
}