spring mvc (2) inject spring bean

Inject spring-managed services and dao into the Controller.

1. Define interfaces and implementation classes
According to the test steps in http://sb33060418.iteye.com/admin/blogs/2372850 , create interface classes TestService, TestDao and implementation classes TestServiceImpl, TestDaoImpl in the same package.

[ 2. Spring configuration
root-context.xml adds the following content:

    <import resource="services.xml"/>
    <import resource="daos.xml"/>

Which introduces the service.xml configuration:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd"
	default-autowire="byName" default-lazy-init="true">

    <!-- services -->
    <bean id="testService" class="com.sunbin.test.testSpring.service.impl.TestServiceImpl">
    </bean>
</beans>

dao.xml placement

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd"
	default-autowire="byName" default-lazy-init="true">

    <!-- daos -->
    <bean id="testDao" class="com.sunbin.test.testSpring.dao.impl.TestDaoImpl">
    </bean>
</beans>

3. Added Controller
to create BeanController.java class

package com.sunbin.test.testSpring.web.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

import com.sunbin.test.testSpring.service.TestService;

public class BeanController implements Controller {

	private TestService testService;

	public ModelAndView handleRequest(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		// TODO Auto-generated method stub
		ModelAndView modelAndView = new ModelAndView();
		String param = request.getParameter("param");
		String messsage = testService.test(param);
		System.out.println(messsage);
		modelAndView.addObject("message", messsage);
		modelAndView.setViewName("helloWorld");
		return modelAndView;
	}

	public TestService getTestService() {
		return testService;
	}

	public void setTestService (TestService testService) {
		this.testService = testService;
	}

}

The testService is referenced in the class, and the address parameter named param is read.

4. Springmvc configure
resolvers-context.xml to add the following content:

<bean name="/bean" class="com.sunbin.test.testSpring.web.controller.BeanController"></bean>

A controller with an address of /bean is configured, and testService is automatically assembled through spring's autowire.

7. After testing the BeanController deployment project and starting tomcat, you can see the output by visiting http://localhost:8080/testSpringWeb/bean?param=sunny
through the browser : testServiceImpl.test:testDaoImpl.test:sunny indicates that the Controller injects and calls the Service , Dao succeeded.

spring mvc (2) inject spring bean

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