SpringBoot安装和初体验（A）

SpringBoot安装

1. 直接使用集成好的eclipse
   http://download.springsource.com/release/STS/3.9.0.RELEASE/dist/e4.7/spring-tool-suite-3.9.0.RELEASE-e4.7.0-win32-x86_64.zip

2. 使用eclipse自己集成
   http://download.springsource.com/release/TOOLS/update/3.9.0.RELEASE/e4.6/springsource-tool-suite-3.9.0.RELEASE-e4.6.3-updatesite.zip

第一个springboot项目

1. File > New > Spring Starter Project
   
   

2. 项目创建完成
   

3. DemoApplication.java

package cn.wuyang.springboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

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

4.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>cn.wuyang</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>1.5.6.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-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>

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


</project>

5.这样就完成了项目的创建，下面我们创建一个 HelloController.java 定义3个方法

package cn.wuyang.springboot.controller;

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

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

@RestController
@RequestMapping("/hello")
public class HelloController {
    @RequestMapping
public String hello() {
return "Hello Spring-Boot";
    }

    @RequestMapping("/info")
public Map<String, String> getInfo(@RequestParam String name) {
        System.out.println("dfsdfs");
Map<String, String> map = new HashMap<>();
map.put("name", name);
return map;
    }

    @RequestMapping("/list")
public List<Map<String, String>> getList() {
List<Map<String, String>> list = new ArrayList<>();
Map<String, String> map = null;
        for (int i = 1; i <= 5; i++) {
map = new HashMap<>();
map.put("name", "wuyang-" + i);
list.add(map);
        }
return list;
    }
}

6.然后现在可以直接运行 SpringBootSampleApplication 的main方法，和执行普通java程序一样。
然后可以看到spring-boot 内置server容器（默认为Tomcat），这一切spring-boot 都帮我们做好了。
控制台输出内容 Started DemoApplication in 4.794 seconds (JVM running for 5.276) 表示服务已经启动。