spring,spring Mvc,mybatis Common annotations

Article Source: https://www.cnblogs.com/hello-tl/p/9209063.html

0. In spring,soring MVC, the common annotations in Mybistis are
<!--to scan annotations on classes in the specified package, commonly used annotations are:　　 -
<!--@Controller declaring the action component --
<!--@Service Declare the Service component @Service ("Xxxservice")--
<!--@Repository declaring DAO components --
<!--@Component Refer to components when they are not well categorized.
<!--@RequestMapping ("/menu") request Map--
<!--@Resource for injection, which is installed by name by default, @Resource (name= "Beanname") --
<!--@Autowired for injection, (spring supplied) by default by type --
<!--@Transactional (Rollbackfor={exception.class}) transaction Management--
<!--@ResponseBody returns the content or object as the HTTP response body, and calls the adapter transform object that is appropriate for Httpmessageconverter, writes the output stream --
 <!--@Scope ("prototype") to set the scope of the bean--

1. @Controller declaring the Action component

Package Com.web.controller;import org.springframework.stereotype.controller;//Controller claims controllers @Controller public class TestController {    /**     * Code body */     }

2. @Service declaring the Service component @Service ("Xxxservice")

@Service ("Testservice")public class Testserviceimpl implements Itestservice {}

3. @Repository declaring DAO components

Package com.web.dao;import org.springframework.stereotype.repository;//declares DAO@Repositorypublic interface Itestdao {   /**     * Code body */     }

4. @Component refer to components when they are not well categorized.

5. @RequestMapping ("/menu") Request mapping

Package Com.web.controller;import Org.springframework.stereotype.controller;import org.springframework.web.bind.annotation.RequestMapping; @Controller
Request Mapping @RequestMapping ("test")public class testcontroller{    
    Request Mapping
    @RequestMapping ("index")public    String getprovince () {        return  "attempt address";    }}

6. @Resource for injection, (provided by the Java EE) by default assembly by name, @Resource (name= "Beanname")

Package Com.web.service.impl;import Org.springframework.stereotype.service;import Javax.annotation.Resource;
Import com.web.dao.testdao;//declares the Service @Service ("Testservice") public class Testserviceimpl implements Itestservice { c11/>//@Resource injected    @Resource    private Itestdao Testdao;}

7. @Autowired for Injection, (Spring provided) default assembly by type

Package Com.web.controller;import Org.springframework.stereotype.controller;import com.web.service.itestservice;/ /Controller Declaration Controllers @controllerpublic class TestController {    //autowired usage    @Autowired    Private Itestservice Testservice;}

8. @Transactional (Rollbackfor={exception.class})

Package Com.web.service.impl;import Org.springframework.stereotype.service;import Javax.annotation.Resource; Import Com.web.dao.testDao;

Import org.springframework.transaction.annotation.Transactional;

@Resource private Itestdao Testdao;

@Override
Add transaction processing
   @Transactional (Rollbackfor={exception.class})
public int addtest (Testmodel testmodel) {
Return Testdao.addtest (Testmodel);
}
}

9. @ResponseBody returns the content or object as an HTTP response body and invokes the adapter transform object that is appropriate for httpmessageconverter, writing to the output stream

Package Com.web.controller;import Org.springframework.stereotype.controller;import org.springframework.web.bind.annotation.RequestMapping; @Controller//Request Map @requestmapping ("Test") public class testcontroller{        //Request map    @RequestMapping ("index")    //write output    @ResponseBody public    String Getprovince () {        return  "input content such as JSON XML string";    }}

[Email protected] ("prototype") sets the scope of the bean

Article Source: https://www.cnblogs.com/hello-tl/p/9209063.html

spring,spring Mvc,mybatis Common annotations