SpringBoot入门demo

所需软件列表：

1.eclipse luna 64bit, 保证其中已经自带了Maven，否则需要通过eclipse的install new software 去安装一下

2.jdk 1.7 64bit

下面开始第一个demo

1.首先手动创建以下目录及文件

目录：WorkSpace->myFirstProject->src->main->java->com->example->myFirstProject

文件：WorkSpacemyFirstProjectpom.xml 文件内容如下：

<?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>myFirstproject</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <!-- Inherit defaults from Spring Boot -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.0.BUILD-SNAPSHOT</version>
    </parent>

    <!-- Add typical dependencies for a web application -->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

    <!-- Package as an executable jar -->
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <!-- Add Spring repositories -->
    <!-- (you don't need this if you are using a .RELEASE version) -->
    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <url>http://repo.spring.io/snapshot</url>
            <snapshots><enabled>true</enabled></snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <url>http://repo.spring.io/milestone</url>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <url>http://repo.spring.io/snapshot</url>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <url>http://repo.spring.io/milestone</url>
        </pluginRepository>
    </pluginRepositories>
</project>

另外新建两个java文件，

WorkSpacemyFirstProjectsrcmainjavacomexamplemyFirstProjectApplication.java , 代码如下，

package main.java.com.example.myFirstProject;

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

@SpringBootApplication 
public class Application {

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

}

WorkSpacemyFirstProjectsrcmainjavacomexamplemyFirstProjectExample.java, 代码如下，

package main.java.com.example.myFirstProject;


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

@RestController
@EnableAutoConfiguration
public class Example {
    
    @RequestMapping("/")
    String home() {
        return "Hello World!";
    }
    
    @RequestMapping("/hello/{myName}")
    String index(@PathVariable String myName) {
        return "Hello "+myName+"!!!";
    }
}

2.Eclipse配置

File->import->Existing Maven Projects， 定位到WorkSpacemyFirstProject，能自动读取pom.xml文件为Maven项目文件，

导入工程后需要配置build path

2.1 在build path的libraries中，Add library->JRE System Library->WorkSpace default JRE(1.7), 确保将JDK1.7导入工程

2.2 Add library->Maven Managed Dependencies, 之后配置“ Maven Project settings" 输入Managed Dependencies 即可

最终配置结果如下，

3.执行Application.java，运行结果如下，

4.在浏览器中输入 http://localhost:8080， 结果如下，

5.在浏览器中输入 http://localhost:8080/hello/world ，结果如下，