SpringMVC + Spring + SpringJDBC整合

SpringMVC +Spring+ SpringJDBC整合实例。文件结构:

3S3(3Spring3.x)的整合大致如下:

1)web.xml的配置:

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<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">

  <display-name></display-name>

  <welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

  <listener>

    <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>

  </listener>

  <servlet>

    <servlet-name>spring</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</servlet-name>

    <url-pattern>*.do</url-pattern>

  </servlet-mapping>

  <!-- 统一字符编码为UTF-8 -->

  <filter>

    <filter-name>setcharacter</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>setcharacter</filter-name>

    <url-pattern>/*</url-pattern>

  </filter-mapping>

</web-app>

2)applicationContext.xml的配置:

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<?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"

    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-3.0.xsd

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

       http://www.springframework.org/schema/context/spring-context-3.0.xsd

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

       http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

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

       http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

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

    <!-- 扫描类包,将标注Spring注解的类自动转化Bean,同时完成Bean的注入 -->

    <context:component-scan base-package="com.controller" />

    <context:component-scan base-package="com.service" />

    <context:component-scan base-package="com.dao" />

    <!-- 配置数据源 -->

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"

        destroy-method="close">

        <property name="driverClass">

            <value>${jdbc.driverClassName}</value>

        </property>

        <property name="jdbcUrl">

            <value>${jdbc.url}</value>

        </property>

        <property name="user">

            <value>${jdbc.username}</value>

        </property>

        <property name="password">

            <value>${jdbc.password}</value>

        </property>

        <!--连接池中保留的最小连接数。 -->

        <property name="minPoolSize">

            <value>5</value>

        </property>

        <!--连接池中保留的最大连接数。Default: 15 -->

        <property name="maxPoolSize">

            <value>30</value>

        </property>

        <!--初始化时获取的连接数,取值应在minPoolSize与maxPoolSize之间。Default: 3 -->

        <property name="initialPoolSize">

            <value>10</value>

        </property>

        <!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->

        <property name="maxIdleTime">

            <value>60</value>

        </property>

        <!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->

        <property name="acquireIncrement">

            <value>5</value>

        </property>

        <!--JDBC的标准参数,用以控制数据源内加载的PreparedStatements数量。但由于预缓存的statements 属于单个connection而不是整个连接池。所以设置这个参数需要考虑到多方面的因素。

            如果maxStatements与maxStatementsPerConnection均为0,则缓存被关闭。Default: 0 -->

        <property name="maxStatements">

            <value>0</value>

        </property>

        <!--每60秒检查所有连接池中的空闲连接。Default: 0 -->

        <property name="idleConnectionTestPeriod">

            <value>60</value>

        </property>

        <!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->

        <property name="acquireRetryAttempts">

            <value>30</value>

        </property>

        <!--获取连接失败将会引起所有等待连接池来获取连接的线程抛出异常。但是数据源仍有效 保留,并在下次调用getConnection()的时候继续尝试获取连接。如果设为true,那么在尝试

            获取连接失败后该数据源将申明已断开并永久关闭。Default: false -->

        <property name="breakAfterAcquireFailure">

            <value>true</value>

        </property>

        <!--因性能消耗大请只在需要的时候使用它。如果设为true那么在每个connection提交的 时候都将校验其有效性。建议使用idleConnectionTestPeriod或automaticTestTable

            等方法来提升连接测试的性能。Default: false -->

        <property name="testConnectionOnCheckout">

            <value>false</value>

        </property>

    </bean>

    <!-- 配置Jdbc模板 -->

    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">

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

    </bean>

    <!-- 配置事务管理器 -->

    <bean id="transactionManager"

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

        p:dataSource-ref="dataSource" />

    <!-- 通过AOP配置提供事务增强,让service包下所有Bean的所有方法拥有事务 -->

    <aop:config proxy-target-class="true">

        <aop:pointcut id="serviceMethod"

            expression=" execution(* com.service..*(..))" />

        <aop:advisor pointcut-ref="serviceMethod" advice-ref="txAdvice" />

    </aop:config>

    <tx:advice id="txAdvice" transaction-manager="transactionManager">

        <tx:attributes>

            <tx:method name="*" />

        </tx:attributes>

    </tx:advice>

    <!-- 启动Spring MVC的注解功能,完成请求和注解POJO的映射 -->

    <bean

        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

    

    

    <!-- 配置视图解析器,将ModelAndView及字符串解析为具体的页面 -->

    <bean

        class="org.springframework.web.servlet.view.InternalResourceViewResolver"

        p:viewClass="org.springframework.web.servlet.view.JstlView" p:prefix="/WEB-INF/jsp/"

        p:suffix=".jsp" />

</beans>

3)jdbc.properties的配置:

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jdbc.driverClassName=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/test2

jdbc.username=root

jdbc.password=123456

4)log4j.properties的配置:

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log4j.rootLogger=DEBUG,A1

# \u8f93\u51fa\u5230\u63a7\u5236\u53f0

log4j.appender.A1=org.apache.log4j.ConsoleAppender

log4j.appender.A1.layout=org.apache.log4j.PatternLayout

log4j.appender.A1.layout.ConversionPattern=%d{yyyy-MM-dd HH\:mm\:ss} [\u65E5\u5FD7\u4FE1\u606F] %m%n

5)User.java

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package com.model;

import java.io.Serializable;

@SuppressWarnings("serial")

public class User implements Serializable {

    

    private int id;

    private String userName;

    private String password;

    

    public String getUserName() {

        return userName;

    }

    public void setUserName(String userName) {

        this.userName = userName;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    public int getId() {

        return id;

    }

    public void setId(int id) {

        this.id = id;

    }

    

}

6)UserController.java

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package com.controller;

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

import org.springframework.stereotype.Controller;

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

import org.springframework.web.servlet.ModelAndView;

import com.model.User;

import com.service.UserService;

@Controller

public class UserComtroller {

    

    @Autowired

    private UserService userService;

    

    @RequestMapping("/user/loginView")

    public String loginView(){

        return "login";

    }

    

    @RequestMapping("/user/registerView")

    public String registerView(){

        return "register";

    }

    

    @RequestMapping("/user/login")

    public ModelAndView login(User user){

        ModelAndView mav = new ModelAndView();

        User u = userService.loginCheck(user);

        if(null==u){

            mav.setViewName("login");

            mav.addObject("errorMsg","用户名或密码有误!");

            return mav;

        }

        else{

            mav.setViewName("success");

            mav.addObject("user", u);

            return mav;

        }

    }

    

    @RequestMapping("/user/register")

    public ModelAndView register(User user){

        ModelAndView mav = new ModelAndView();

        if(userService.register(user)){

            mav.setViewName("register_succ");

            return mav;

        }

        else{

            mav.setViewName("register");

            mav.addObject("errorMsg","用户名已被占用,请更换!!");

            return mav;

        }

    }

}

7)UserService Interface

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package com.service;

import com.model.User;

public interface UserService {

    public boolean register(User user);

    public User loginCheck(User user);

}

8)UserServiceImp.java

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package com.service.implement;

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

import org.springframework.stereotype.Service;

import com.dao.UserDao;

import com.model.User;

import com.service.UserService;

@Service

public class UserServiceImpl implements UserService {

    @Autowired

    private UserDao userDao;

    

    @Override

    public User loginCheck(User user) {

        User u  = userDao.findUserByUserName(user.getUserName());

        System.out.println("id="+u.getId()+",  userName="+u.getUserName()+", password="+u.getPassword());

        if(user.getPassword().equals(u.getPassword())){

            return u;

        }

        else{

            return null;

        }

    }

    @Override

    public boolean register(User user) {

        User u =  userDao.findUserByUserName(user.getUserName());

        if(u.getId()==0){

            userDao.register(user);

            return true;

        }

        else{

            System.out.println("id="+u.getId()+",  userName="+u.getUserName()+", password="+u.getPassword());

            return false;

        }

    }

}

9)UserDao Interface

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package com.dao;

import com.model.User;

public interface UserDao {

    public void register(User user);

    public User findUserByUserName(final String userName);

}

10)UserDaoImpl.java

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package com.dao.implement;

import java.sql.ResultSet;

import java.sql.SQLException;

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

import org.springframework.jdbc.core.JdbcTemplate;

import org.springframework.jdbc.core.RowCallbackHandler;

import org.springframework.stereotype.Repository;

import com.dao.UserDao;

import com.model.User;

@Repository

public class UserDaoImpl implements UserDao {

    

    @Autowired

    private JdbcTemplate jdbcTemplate;

    @Override

    public void register(User user) {

        String sqlStr = "insert into user(uname,pwd) values(?,?)";

        Object[] params = new Object[]{user.getUserName(),user.getPassword()};

        jdbcTemplate.update(sqlStr, params);

    }

    @Override

    public User findUserByUserName(String userName) {

        String sqlStr = "select id,uname,pwd from user where uname=?";

        final User user = new User();

        jdbcTemplate.query(sqlStr, new Object[]{userName}, new RowCallbackHandler() {

            @Override

            public void processRow(ResultSet rs) throws SQLException {

                user.setId(rs.getInt("id"));

                user.setUserName(rs.getString("uname"));

                user.setPassword(rs.getString("pwd"));

            }

        });

        return user;

    }

}

11)单元测试:test/com.service.implement

-UserServiceImplTest.java

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package com.service.implement;

import org.junit.Test;

import org.junit.runner.RunWith;

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

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.model.User;

import com.service.UserService;

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration(locations="/applicationContext.xml")

public class UserServiceTest {

    

    @Autowired

    private UserService userService;

    

    @Test

    public void testLoginCheck(){

        User user = new User();

        user.setUserName("manager2");

        user.setPassword("123");

        if(null!=userService.loginCheck(user))

            System.out.println("------OK!!-----");

        else

            System.out.println("------Sorry!!-----");

    }

    

    @Test

    public void testRegister(){

        User user = new User();

        user.setUserName("manager");

        user.setPassword("123");

        System.out.println(userService.register(user));

    }

}

12)测试结果:

时间: 2024-10-03 13:47:56

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