3.使用springboot框架的核心配置文件application.properties（springboot-003-context-path）

package com.powernode.springboot.web;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import java.util.HashMap;
import java.util.Map;

@Controller
public class IndexController {

    @RequestMapping(value="/say")
    public @ResponseBody String say(){
        return "say:Hello Springboot!";
    }

    @RequestMapping(value="/mapvalue")
    @ResponseBody
    public Map mapvalue(){
        Map retMap = new HashMap();
        retMap.put("message","Springboot Project!");
        return retMap;
    }
}