Spring MVC 搭建

Spring MVC 用户登录流程
本文介绍了一个使用Spring MVC框架实现的简单用户登录流程。该流程包括Controller层处理用户请求、Service层进行业务逻辑处理以及DAO层操作数据库。通过具体代码展示了各层之间的交互方式。
Action(Controller)====
package com.action;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.service.UserService;

@Controller
public class UserAction {
	@Resource(name = "userService")
	private UserService userService;

	public void setUserService(UserService userService) {
		this.userService = userService;
	}

	@RequestMapping(value = "/login")
	public String load() {
		System.out.println("=============1");

		userService.find_all();

		return "/index";
	}

}

================

Service===
package com.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.dao.user.UserDao;
import com.entity.User;
import com.service.UserService;

@Service("userService")
public class UserServiceImpl implements UserService {
	@Resource(name="userDao")  
	private UserDao userDao;
	

	public void setUserDao(UserDao userDao) {
		this.userDao = userDao;
	}

	@Override
	public List<User> find_all() {
		
		return userDao.find_all();
	}

	@Override
	public List<User> find_fuzzy(String key) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void add(User t) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void delete(User t) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public User update(User t) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public User findBy_Id(User t) {
		// TODO Auto-generated method stub
		return null;
	}
//org.s...f....web.servlet.view.InternalResourceViewResolver
	
}

Dao ===
package com.dao.user.impl;

import java.util.List;
 


import javax.annotation.Resource;

import org.springframework.jdbc.core.JdbcTemplate;
 

import org.springframework.stereotype.Repository;

import com.dao.user.UserDao;
import com.entity.User;  
@Repository("userDao")
public class UserDaoImpl implements UserDao {

	@Resource(name="jdbcTemplate") 
	private JdbcTemplate jdbcTemplate;
   

	public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
		this.jdbcTemplate = jdbcTemplate;
	}

	@Override
	public List<User> find_all() {
		String sql = "select name from user where id=?"; 
/*String name=(String)jdbcTemplate.queryForObject(
             "selcet name from user where id=?",
                         new Object[]{id},
                         java.lang.String.class);
)*/ 
		  System.out.println(jdbcTemplate.queryForList(sql,new Object[]{1},String.class));
	 
		return null;
	}

	@Override
	public List<User> find_fuzzy(String key) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void add(User t) {
		// TODO Auto-generated method stub

	}

	@Override
	public void delete(User t) {
		// TODO Auto-generated method stub

	}

	@Override
	public User update(User t) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public User findBy_Id(User t) {
		// TODO Auto-generated method stub
		return null;
	}

}

applicationContext.xml====
<?xml version="1.0" encoding="UTF-8"?>  
<beans  
  
    xmlns:aop="http://www.springframework.org/schema/aop"   
    xmlns:context="http://www.springframework.org/schema/context"  <pre name="code" class="html">Web.xml
====
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>LoveFood_Spring</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
 <!--  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param> -->

<!-- 后加  -->
 <servlet>  
    <servlet-name>spring-mvc</servlet-name>  
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
    <init-param>  
      <param-name>contextConfigLocation</param-name>  
      <param-value>classpath:applicationContext.xml</param-value>  
    </init-param>  
    <load-on-startup>1</load-on-startup>  
  </servlet>  
  <servlet-mapping>  
    <servlet-name>spring-mvc</servlet-name>  
    <url-pattern>*.do</url-pattern>  
  </servlet-mapping> 








</web-app>

xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd "> <import resource="db-mysql.xml"/> <!-- 数据Bean --><bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"> <property name="dataSource"> <ref bean="dataSource_Mysql" /> </property></bean> <!--User Bean --><!-- <bean id="userDao" class="com.dao.user.impl.UserDaoImpl"> <property name="jdbcTemplate"> <ref bean="jdbcTemplate" /> </property> </bean> <bean id="userService" class="com.service.impl.UserServiceImpl"> <property name="userDao"> <ref bean="userDao" /> </property> </bean> <bean id="UserAction" class="com.action.UserAction"> <property name="userService"> <ref bean="userService" /> </property> </bean> --> <!-- --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/View"/> <property name="suffix" value=".jsp"/> </bean> <mvc:annotation-driven/> <context:component-scan base-package="com"/> <!-- 注解驱动 --> </beans>


db-mysql.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
	xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans-4.1.xsd">
 
	
	<bean id="dataSource_Mysql" class="com.jolbox.bonecp.BoneCPDataSource" destroy-method="close">
   <property name="driverClass" value="com.mysql.jdbc.Driver" />
   <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/lovefood" />
   <property name="username" value="root"/>
   <property name="password" value="root"/>
   <property name="idleConnectionTestPeriod" value="60"/>
   <property name="idleMaxAge" value="240"/>
   <property name="maxConnectionsPerPartition" value="30"/>
   <property name="minConnectionsPerPartition" value="10"/>
   <property name="partitionCount" value="3"/>
   <property name="acquireIncrement" value="5"/>
   <property name="statementsCacheSize" value="100"/>
   <property name="releaseHelperThreads" value="3"/>
</bean>

</beans>


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