SpingMVC controller, service, dao包扫描配置

最新推荐文章于 2025-03-18 13:49:03 发布

ceopen1

最新推荐文章于 2025-03-18 13:49:03 发布

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文章标签： java

本文链接：https://blog.youkuaiyun.com/ceopen1/article/details/121748046

本文介绍了如何在SpringMVC中配置包扫描，以便控制器能调用Service和DAO层。通过ajax从jsp页面发起请求，控制器接收并在后端进行处理。Controller层详细讲解了如何调用实现WordService接口的业务逻辑，以及进一步调用实现了WordLearnDao接口的数据访问操作。

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springmvc-action.xml

<context:component-scan base-package="com.memsay.controller"/>
	<context:component-scan base-package="com.memsay.service.*"/>	
	<context:component-scan base-package="com.memsay.dao.*"/>

jsp->js:调用后ajax,后台controller接收

  $.ajax( {  
	        type : 'GET',  
	        contentType : 'application/json',  
	        url : 'http://localhost:8080/com.memsay/getAllWords',  
	        dataType : 'json',
	        data:'id=111&str=abc',
	        success : function(data) {  
	        	alert("success...");

@Controller
public class WordLearnController extends BaseController{

	
	@Autowired
	WordService	ws;
	
	@RequestMapping(value = "/getAllWords", method = RequestMethod.GET)  
	@ResponseBody  
	public Map<String, Object> getAllWords() {
		
		System.out.println("WordLearnController->getAllWords...");
		
		List<Word> list = new ArrayList<Word>();  	
//		
		ws.getAllWords();
		
		return null;//wordservice.getAllWords();

Controller 向下调用 service 与 dao 层

@Service  //为了包扫描的时候这个Service被扫描到  
public class WordServiceImpl implements WordService{
	
    @Resouce
	WordLearnDao wld;
//	
	public Map<String, Object>getAllWords() {
		...
    }


@Repository //为了包扫描的时候这个Dao被扫描到  
public class WordLearnDaoImpl  implements WordLearnDao{ 	
		
        
        @Resource
		WordLearnDao wld;
	
		public Map<String, Object>getAllWords() {
		
		System.out.println("WordServiceImpl->getAllWords");

        ...    

        }

WordService与WordLearnDao为interface