Spring boot入门demo

pom.xml

<?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>war</packaging>

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

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.8.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-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--热启动：每自修改后， 程序自动启动spring Application上下文。  -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <!--热启动 -->
                <configuration>
                    <fork>true</fork>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

项目文件目录

模拟控制层代码

package com.example.controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.example.pojo.Student;
/**
 * spring boot demo
 * @author XSWL pengfei.xiong
 * @date 2017年11月17日
 */
@RestController //相当于@Controller和@RequestBody 返回json
@EnableAutoConfiguration
public class HelloSpringBoot {
    @RequestMapping("/hello")
    public String showHello(){
        return "Hello SpringBoot!";
    }


    @RequestMapping("/pojo")
    public Student showStudent(){
        Student student = new Student(1, "show", 20);
        return student;
    }

    @RequestMapping("/map")
    public Map<String, Object> showMap(){
        Map<String, Object> map = new HashMap<String,Object>();
        map.put("username", "张无忌");
        map.put("age", 15);
        return map;
    }

    @RequestMapping("/list")
    public List<Student> showList(){
        List<Student> list = new ArrayList<Student>();
        Student student01 = new Student(1, "show", 20);
        Student student02 = new Student(1, "show", 20);
        list.add(student01);
        list.add(student02);
        return list;
    }

}

如果对于上面的注解有疑问就看下这个博客: https://www.cnblogs.com/woms/p/5754200.html

实体类 就不用说了啊

package com.example.pojo;

import java.io.Serializable;

public class Student implements Serializable{
    private int id;
    private String name;
    private int age;

    public Student() {
        super();
    }


    public Student(int id, String name, int age) {
        super();
        this.id = id;
        this.name = name;
        this.age = age;
    }


    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }


    public int getAge() {
        return age;
    }


    public void setAge(int age) {
        this.age = age;
    }


}

最后是程序的入口

package com.example.demo;

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

import com.example.controller.HelloSpringBoot;

@SpringBootApplication
public class DemoApplication{


    // 项目入口
    public static void main(String[] args) {
           SpringApplication.run(HelloSpringBoot.class, args);
            //运行之后在浏览器中访问：http://localhost:11086/hello 默认端口8080,我这是修改后的路径
    }


}

补充下:修改端口在application.properties文件中加一句话: server.port=11086
demo源码下载 http://blog.csdn.net/xpf_user/article/details/78557782
整合mybatis三层文章 http://blog.csdn.net/xpf_user/article/details/78557782: