第一种：@RestController
package com.mashibing.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
@RequestMapping("/hello")
public String hello(){
return "hello_world";
}
}
第二种：
@Controller
@ResponseBody
package com.mashibing.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class HelloController {
@RequestMapping("/hello")
@ResponseBody
public String hello(){
return "hello_world";
}
}
2. SpringBoot启动器不能随便放置位置
启动器目录： com.mashibing.SpringbootStudyApplication
package com.mashibing;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringbootStudyApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootStudyApplication.class, args);
}
}
启动器目录：
com.mashibing. test. SpringbootStudyApplication
此时要加一个配置项：@ComponentScan(“com.mashibing”)
package com.mashibing.test;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
@SpringBootApplication
@ComponentScan("com.mashibing")
public class SpringbootStudyApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootStudyApplication.class, args);
}
}
