springboot入门案例helloworld

在idea下， 创建java项目， 配置maven支持

1, 配置pom.xml

   <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.3.4.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <!--<exclusions>--> <!--打包为war时，在tomcat中运行，需添加此条目-->
                <!--<exclusion>-->
                    <!--<groupId>org.springframework.boot</groupId>-->
                    <!--<artifactId>spring-boot-starter-tomcat</artifactId>-->
                <!--</exclusion>-->
            <!--</exclusions>-->
        </dependency>
    </dependencies>

    <packaging>war</packaging>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <finalName>springboot</finalName>
    </build>

2， 配置Application.java和Controller类

a, 自定义启动类Application.java

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan("a") //扫描controller所在的包
public class Application extends SpringBootServletInitializer {

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

    @Override
    public SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        // 设置启动类,用于独立tomcat运行的入口
        return builder.sources(Application.class);
    }
}

b，controller类

package a;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import spark_jobctl.JobKill;
import spark_jobctl.Submit_launcher;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Controller
public class HelloController {

    @RequestMapping(value = "/success", method = {RequestMethod.GET})
    @ResponseBody
    public String successModel(HttpServletRequest request, HttpServletResponse reponse) {
        return "success";
    }
}