知识大全 servlet中如何访问spring容器
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package web action;
import java util ArrayList;
import java util List;
import javax servlet HttpServlet;
import javax servlet HttpServletRequest;
import javax servlet HttpServletResponse;
import sprntext WebApplicationContext;
import sprntext support WebApplicationContextUtils;
import pojo Products;
import service IWorksService;
public class Test extends HttpServlet
private IWorksService worksService;
private WebApplicationContext wac;
public void init()
wac =WebApplicationContextUtils getRequiredWebApplicationContext(this getServletContext());
protected void doGet(HttpServletRequest req HttpServletResponse resp)
System out println( servlet );
String className=req getParameter( className );
List list=new ArrayList();
if(className!=null&&className equals( worksService ))
worksService=(IWorksService)wac getBean( worksService );
wac = (WebApplicationContext)this getServletContext() getAttribute(WebApplicationContext ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE);
try
list=worksService getWorksList(new Products() );
System out println( list size +list size());
catch(Exception e)
e printStackTrace();
try
resp getWriter() append( list size| +list size());
resp getWriter() flush();
catch(Exception e)
e printStackTrace();
IWorksService 为spring中定义的一个服务接口:
package web action;
import java util ArrayList;
import java util List;
import javax servlet HttpServlet;
import javax servlet HttpServletRequest;
import javax servlet HttpServletResponse;
import sprntext WebApplicationContext;
import sprntext support WebApplicationContextUtils;
import pojo Products;
import service IWorksService;
public class Test extends HttpServlet
private IWorksService worksService;
private WebApplicationContext wac;
public void init()
wac =WebApplicationContextUtils getRequiredWebApplicationContext(this getServletContext());
protected void doGet(HttpServletRequest req HttpServletResponse resp)
System out println( servlet );
String className=req getParameter( className );
List list=new ArrayList();
if(className!=null&&className equals( worksService ))
worksService=(IWorksService)wac getBean( worksService );
wac = (WebApplicationContext)this getServletContext() getAttribute(WebApplicationContext ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE);
try
list=worksService getWorksList(new Products() );
System out println( list size +list size());
catch(Exception e)
e printStackTrace();
try
resp getWriter() append( list size| +list size());
resp getWriter() flush();
catch(Exception e)
e printStackTrace();
IWorksService 为spring中定义的一个服务接口: <bean id= worksService class= service impl WorksServiceImpl > <property name= worksDao > <ref bean= worksDao /> </property> <property name= divi > <ref bean= diviPageUtil /> </property> </bean>
<bean id= worksService class= service impl WorksServiceImpl > <property name= worksDao > <ref bean= worksDao /> </property> <property name= divi > <ref bean= diviPageUtil /> </property> </bean> 可以看出访问sping容器中对象可以通过访问web容器中的固定属性而得到spring容器 进行得到spring容器中的对象
cha138/Article/program/Java/ky/201311/28787相关参考