SSM整合---实现全部用户查询

2022-11-20 22:12:07

SSM整合

准备

1、创建工程

2、导入必须jar包

链接: https://pan.baidu.com/s/1nvCDQJ3 密码: v5xs

3、工程结构

SSM整合---实现全部用户查询

代码

SqlMapConfig

<!DOCTYPE configuration

  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"

  "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>

	<typeAliases>

	<!-- 批量扫描别名 -->

		<package name="cn.behle.hrs.po"/>

	</typeAliases>

</configuration>

applicationContext-dao

<?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:mvc="http://www.springframework.org/schema/mvc"

	xmlns:context="http://www.springframework.org/schema/context"

	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"

	xsi:schemaLocation="http://www.springframework.org/schema/beans

		http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

		http://www.springframework.org/schema/mvc

		http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

		http://www.springframework.org/schema/context

		http://www.springframework.org/schema/context/spring-context-3.2.xsd

		http://www.springframework.org/schema/aop

		http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

		http://www.springframework.org/schema/tx

		http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

<context:property-placeholder location="classpath:db.properties"/>

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

　　　　<property name="driverClassName" value="${jdbc.driver}"/>
          　　<property name="url" value="${jdbc.url}"/>
　　　　　<property name="username" value="${jdbc.name}"/>
　　　　　<property name="password" value="${jdbc.password}"/>

	<property name="maxActive" value="30"/>

	<property name="maxIdle" value="5"/>

</bean>

<!-- 配置sqlSeesionFactory -->

<bean id="sqlSeesionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

	<property name="dataSource" ref="dataSource"></property>

	<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"></property>

</bean>

<!-- 配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

	<property name="basePackage" value="cn.behle.hrs.mapper"></property>

	<property name="sqlSessionFactoryBeanName" value="sqlSeesionFactory"></property>

</bean>

</beans>

　　

applicationContext-service

<?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:mvc="http://www.springframework.org/schema/mvc"

	xmlns:context="http://www.springframework.org/schema/context"

	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"

	xsi:schemaLocation="http://www.springframework.org/schema/beans

		http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

		http://www.springframework.org/schema/mvc

		http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

		http://www.springframework.org/schema/context

		http://www.springframework.org/schema/context/spring-context-3.2.xsd

		http://www.springframework.org/schema/aop

		http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

		http://www.springframework.org/schema/tx

		http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

<!-- 注入bean -->

<bean id="userService" class="cn.behle.hrs.serviceImp.UserServiceImp"></bean>

</beans>

applicationContext-transaction

<beans xmlns="http://www.springframework.org/schema/beans"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"

	xmlns:context="http://www.springframework.org/schema/context"

	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"

	xsi:schemaLocation="http://www.springframework.org/schema/beans

		http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

		http://www.springframework.org/schema/mvc

		http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

		http://www.springframework.org/schema/context

		http://www.springframework.org/schema/context/spring-context-3.2.xsd

		http://www.springframework.org/schema/aop

		http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

		http://www.springframework.org/schema/tx

		http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

    <!-- 配置事务管理器 -->

    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager"

    id="transactionManager">

        <!-- 注入数据库连接池 -->

        <property name="dataSource" ref="dataSource"></property>

    </bean>

    <!-- 配置基于注解的声明式事务 -->

    <tx:annotation-driven transaction-manager="transactionManager"/>

</beans>

　　springmvc

<?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:mvc="http://www.springframework.org/schema/mvc"

	xmlns:context="http://www.springframework.org/schema/context"

	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"

	xsi:schemaLocation="http://www.springframework.org/schema/beans

		http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

		http://www.springframework.org/schema/mvc

		http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd

		http://www.springframework.org/schema/context

		http://www.springframework.org/schema/context/spring-context-3.2.xsd

		http://www.springframework.org/schema/aop

		http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

		http://www.springframework.org/schema/tx

		http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

	<!-- 扫描包注解注册bean -->

 <context:component-scan base-package="cn.behle.hrs.controller"></context:component-scan>

	<!-- 注解驱动 -->

	<mvc:annotation-driven></mvc:annotation-driven>

	 <!-- 配置jsp 显示ViewResolver -->

     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

         <property name="prefix" value="/WEB-INF/"></property>

        <property name="suffix" value=".jsp"></property>

    </bean>

</beans>

　　db.properties

jdbc.driver=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/hrs

jdbc.username=root

jdbc.password=123456

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">

  <display-name>HRS</display-name>

  <!-- 加载spring -->

 <context-param>

 	<param-name>contextConfigLocation</param-name>

 	<param-value>/WEB-INF/classes/spring/applicationContext-*.xml</param-value>

 </context-param>

 <listener>

 	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

 </listener>

 <!-- 配置springmvc -->

 <servlet>

        <servlet-name>springmvc</servlet-name>

        <servlet-class>

			org.springframework.web.servlet.DispatcherServlet

		</servlet-class>

		<init-param>

      		<param-name>contextConfigLocation</param-name>

       		<param-value>classpath:spring/springmvc.xml</param-value>

        </init-param>

 </servlet>

 <servlet-mapping>

        <servlet-name>springmvc</servlet-name>

        <url-pattern>*.action</url-pattern>

    </servlet-mapping>

 <!-- 编码过滤器 -->

<filter>

        <filter-name>CharacterEncodingFilter</filter-name>

        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

        <init-param>

            <param-name>encoding</param-name>

            <param-value>utf-8</param-value>

        </init-param>

    </filter>

    <filter-mapping>

        <filter-name>CharacterEncodingFilter</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

<!-- jstl标签配置 -->

  <jsp-config>

    <taglib>

    <taglib-uri>http://java.sun.com/jstl/fmt</taglib-uri>

    <taglib-location>/WEB-INF/fmt.tld</taglib-location>

    </taglib>

    <taglib>

    <taglib-uri>http://java.sun.com/jstl/fmt-rt</taglib-uri>

    <taglib-location>/WEB-INF/fmt-rt.tld</taglib-location>

    </taglib>

    <taglib>

    <taglib-uri>http://java.sun.com/jstl/core</taglib-uri>

    <taglib-location>/WEB-INF/c.tld</taglib-location>

    </taglib>

    <taglib>

    <taglib-uri>http://java.sun.com/jstl/core-rt</taglib-uri>

    <taglib-location>/WEB-INF/c-rt.tld</taglib-location>

    </taglib>

    <taglib>

    <taglib-uri>http://java.sun.com/jstl/sql</taglib-uri>

    <taglib-location>/WEB-INF/sql.tld</taglib-location>

    </taglib>

    <taglib>

    <taglib-uri>http://java.sun.com/jstl/sql-rt</taglib-uri>

    <taglib-location>/WEB-INF/sql-rt.tld</taglib-location>

    </taglib>

    <taglib>

    <taglib-uri>http://java.sun.com/jstl/x</taglib-uri>

    <taglib-location>/WEB-INF/x.tld</taglib-location>

    </taglib>

    <taglib>

    <taglib-uri>http://java.sun.com/jstl/x-rt</taglib-uri>

    <taglib-location>/WEB-INF/x-rt.tld</taglib-location>

    </taglib>

    </jsp-config>

  <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>

</web-app>

　　SSM整合---实现全部用户查询

UserController.java

package cn.behle.hrs.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

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

import cn.behle.hrs.po.User;

import cn.behle.hrs.service.UserService;

@Controller

public class UserController {

	@Autowired

	private UserService userService;

	@RequestMapping("/queryUser.action")

	public String  queryUser(Model model) throws Exception{

		List<User> userlist = userService.selectUser();

		model.addAttribute("userlist",userlist);

		return "/user/staff";

	}

}

　　UserService.java

public interface UserService {

	//查询用户service接口

		public List<User> selectUser() throws Exception;

}

　　

UserServiceImp.java
public class UserServiceImp implements UserService {

	@Autowired

	private UserMapper userMapper;

	//查询用户service接口实现

	@Override

	public List<User> selectUser() throws Exception {

		return userMapper.selectUser();

		// TODO Auto-generated method stub

	}

}

　　mapper接口

UserMapper.java

public interface UserMapper {

	//查询全部用户

	public List<User> selectUser() throws Exception;

}

UserMapper.xml

<!DOCTYPE mapper

PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"

"http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="cn.behle.hrs.mapper.UserMapper">

<select id="selectUser" resultType="cn.behle.hrs.po.User">

  SELECT * FROM user

</select>

</mapper>

　　

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