元素用法

pom.xml

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

变成

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

MyControll.java

@RestController                //@RestController=@Controller+@ResponseBody
public class MyControll {
    @Autowired
    private MyService service;
    @RequestMapping("/ok")
    public String ok(){
        String rr=service.work("hello");
       return rr;
    }
}

MyService.java

@Component
public class MyService {
    @Autowired
    private MyDao dao;
    public String work(String s){
        String rs="";
        for(int i=0;i<10;++i) {
            rs+=dao.find(s);
        }
        return rs;
    }
}

MyDao.java

@Component
public class MyDao {
    public String find(String s){
        return "<h2>"+s+"</h2>";
    }
}

成品

十个hello