springboot（三 单独将controller放一个包下）

springboot的入口

package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.Configuration;

@SpringBootApplication
public class DatasourcesApplication {

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


controller类
package com.example.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class Hello {
//连一个数据库
@RequestMapping(value="/hello")
//@ResponseBody
public String data1(){
System.err.println("进入controller");
return "hello";
}
}
 这里需要注意  这两个位置 contrller在入口包里或者包下，否则访问不了