Maven学习笔记(十)-Maven整合SSHSJ(Spring+SpringMVC+Hibernate+Spring Data JPA+JdbcTemplate)框架

今天药忘吃喽~ 2022-06-14 05:10 156阅读 0赞

**一、所用版本与步骤**  
  
  
四个框架所使用的版本:  
  
Spring ---- 4.1.3.RELEASE

Spring mvc ---- 4.1.3.RELEASE

Spring Data JPA----1.3.2.RELEASE

hibernate ---- 4.3.11.Final

其它:  
  
junit ---- 4.12  
MySQL ---- 5.1.35  
log4j ---- 1.2.17  
c3p0 ---- 0.9.2.1

jstl ---- 1.2

**二、整合框架**

步骤和前面的Spring+SpringMVC+Hibernate整合差不多,主要的差别就是这里使用了Spring Data JAP中的EntityManagerFactory，而不是Hibernate中的SessionFactory

JPA使用EntityManagerFactory开闭session，而Hibernate使用SessionFactory开闭session。两者区别：  
  
1. EntityManagerFactory是JPA的标准API，如果使用EntityManagerFactory，在更换实现JPA的ORM框架时，需要改动的代码很少。如果使用SessionFactory，因为SessionFactory是Hibernate的，无法直接更换ORM框架，更换ORM的话，需要修改所有的代码。  
  
2. 如果想使用Hibernate的某些高级特性，只能使用SessionFactory，使用EntityManagerFactory无法享受Hibernate的高级用法。

项目结构:

![20170611132813348][]

POM.XML文件为:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
      <modelVersion>4.0.0</modelVersion>
      <groupId>com.fendo</groupId>
      <artifactId>JPA</artifactId>
      <packaging>war</packaging>
      <version>0.0.1-SNAPSHOT</version>
      <name>JPA Maven Webapp</name>
      <url>http://maven.apache.org</url>
      
      
      <properties>
        <junit.version>4.12</junit.version>
        <servlet.version>3.1.0</servlet.version>
        <jstl.version>1.2</jstl.version>
        <taglibs.version>1.1.2</taglibs.version>
        
        <spring.version>4.1.3.RELEASE</spring.version>
        <jpa.version>1.3.2.RELEASE</jpa.version>
        <hibernat.version>4.3.11.Final</hibernat.version>
        <mysql.version>5.1.35</mysql.version>
        <dhcp.version>1.2.2</dhcp.version>
      </properties>
      
      
      <dependencies>
      
           <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
            </dependency>
            
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
                <version>${servlet.version}</version>
            </dependency>
            
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jstl</artifactId>
                <version>${jstl.version}</version>
            </dependency>
            
            <dependency>
                <groupId>taglibs</groupId>
                <artifactId>standard</artifactId>
                <version>${taglibs.version}</version>
            </dependency>
            
            
            
             <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-orm</artifactId>
                <version>4.1.3.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>${spring.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>${spring.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-beans</artifactId>
                <version>${spring.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-web</artifactId>
                <version>${spring.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>${spring.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aop</artifactId>
                <version>${spring.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-tx</artifactId>
                <version>${spring.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-core</artifactId>
                <version>${spring.version}</version>
            </dependency>
            
            
            <dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-jpa</artifactId>
                <version>${jpa.version}</version>
            </dependency>
    
    		
            <dependency>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-core</artifactId>
                <version>${hibernat.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-entitymanager</artifactId>
                <version>${hibernat.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-ehcache</artifactId>
                <version>${hibernat.version}</version>
            </dependency>
            
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>
            
            
            
            <dependency>
                <groupId>commons-dbcp</groupId>
                <artifactId>commons-dbcp</artifactId>
                <version>${dhcp.version}</version>
            </dependency>
            
    
            
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-api</artifactId>
                <version>1.7.12</version>
            </dependency>
            
            <dependency>
                <groupId>com.jolbox</groupId>
                <artifactId>bonecp</artifactId>
                <version>0.8.0.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>com.jolbox</groupId>
                <artifactId>bonecp-spring</artifactId>
                <version>0.8.0.RELEASE</version>
            </dependency>
            
            <dependency>
                <groupId>com.jolbox</groupId>
                <artifactId>bonecp-provider</artifactId>
                <version>0.8.0-alpha1</version>
            </dependency>
            
    
            
            <dependency>
                <groupId>org.aspectj</groupId>
                <artifactId>aspectjweaver</artifactId>
                <version>1.8.7</version>
            </dependency>
            
            <dependency>
                <groupId>cglib</groupId>
                <artifactId>cglib-nodep</artifactId>
                <version>3.2.0</version>
            </dependency>
            
            <dependency>
                <groupId>commons-collections</groupId>
                <artifactId>commons-collections</artifactId>
                <version>3.2.1</version>
            </dependency>
            
            <dependency>
                <groupId>ant</groupId>
                <artifactId>ant</artifactId>
                <version>1.6.5</version>
            </dependency>
            
            <dependency>
                <groupId>org.apache.avro</groupId>
                <artifactId>avro</artifactId>
                <version>1.7.7</version>
            </dependency>
            
            <dependency>
                <groupId>commons-beanutils</groupId>
                <artifactId>commons-beanutils</artifactId>
                <version>1.9.2</version>
            </dependency>
            
            
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>2.4</version>
            </dependency>
            
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
                <version>3.4</version>
            </dependency>
            
            <dependency>
                <groupId>dom4j</groupId>
                <artifactId>dom4j</artifactId>
                <version>1.6.1</version>
            </dependency>
            
            <dependency>
                <groupId>net.sf.ezmorph</groupId>
                <artifactId>ezmorph</artifactId>
                <version>1.0.6</version>
            </dependency>
            
    
            <dependency>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
                <version>18.0</version>
            </dependency>
            
            <dependency>
                <groupId>org.javassist</groupId>
                <artifactId>javassist</artifactId>
                <version>3.20.0-GA</version>
            </dependency>
            
            <dependency>
                <groupId>org.jboss.logging</groupId>
                <artifactId>jboss-logging</artifactId>
                <version>3.3.0.Final</version>
            </dependency>
            
            
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
                <version>2.5.0</version>
            </dependency>
            
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-core</artifactId>
                <version>2.5.0</version>
            </dependency>
            
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-annotations</artifactId>
                <version>2.5.0</version>
            </dependency>
            
    
            
        </dependencies>
        <build>
            <plugins>
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>2.3.2</version>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                        <encoding>utf8</encoding>
                    </configuration>
                </plugin>
            </plugins>
            <finalName>JPA</finalName>
        </build>
    </project>

applicationContext.xml文件为:

<?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:aop="http://www.springframework.org/schema/aop"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:p="http://www.springframework.org/schema/p"
        xmlns:cache="http://www.springframework.org/schema/cache"
        xmlns:jaxws="http://cxf.apache.org/jaxws"
        xmlns:jpa="http://www.springframework.org/schema/data/jpa"
        xsi:schemaLocation="
                        http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                        http://www.springframework.org/schema/tx 
                        http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
                        http://www.springframework.org/schema/aop 
                        http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
                        http://www.springframework.org/schema/context      
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd
                        http://www.springframework.org/schema/cache 
                        http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
                        http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd 
                        http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd" 
                        default-lazy-init="true">
    
        
        <context:component-scan base-package="com.fendo">
            <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
        </context:component-scan>
    
        
        <context:property-placeholder location="classpath:config.properties" />
    
        
        
        <bean id="dataSource" class="com.jolbox.bonecp.BoneCPDataSource"
            destroy-method="close">
            
            <property name="driverClass" value="${jdbc.driverClassName}" />
            
            <property name="jdbcUrl" value="${jdbc.url}" />
            
            <property name="username" value="${jdbc.username}" />
            
            <property name="password" value="${jdbc.password}" />
        </bean>
    
        
        <bean id="entityManagerFactory"
            class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
            <property name="dataSource" ref="dataSource" />
            <property name="jpaVendorAdapter" ref="hibernateJpaVendorAdapter" />
            
            <property name="packagesToScan" value="com.fendo.entity" />
    
            <property name="jpaProperties">
                <props>
                    <prop key="hibernate.current_session_context_class">thread</prop>
                    <prop key="hibernate.hbm2ddl.auto">update</prop>
                    <prop key="hibernate.show_sql">false</prop>
                    <prop key="hibernate.format_sql">false</prop>
                    
                    
                    <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>
                    
                </props>
            </property>
        </bean>
        
        
        <bean id="hibernateJpaVendorAdapter"
            class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="databasePlatform" value="${hibernate.dialect}"/>
        </bean>
        
        
        <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
            <property name="entityManagerFactory" ref="entityManagerFactory"/>
        </bean>
    
        
        <jpa:repositories base-package="com.fendo"  transaction-manager-ref="transactionManager" entity-manager-factory-ref="entityManagerFactory"/>
        
        
        <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" />
    </beans>

Spring-mvc.xml文件为:

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation=" 
                    http://www.springframework.org/schema/beans 
                    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 
                    http://www.springframework.org/schema/context 
                    http://www.springframework.org/schema/context/spring-context-3.1.xsd 
                    http://www.springframework.org/schema/mvc 
                    http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd" >
        
        
        <mvc:annotation-driven />
        
        
        
        <context:component-scan base-package="com.fendo.controller" use-default-filters="false">
            <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
            <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
        </context:component-scan>
        
        
        
        
        
        
        
        <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">    
            <property name="supportedMediaTypes">    
                <list>
                    <value>application/x-www-form-urlencoded;charset=UTF-8</value>
                </list>
            </property>
        </bean>
     
         
        <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
             <property name="messageConverters">
                <list>
                    <ref bean="mappingJacksonHttpMessageConverter" />
                </list>
            </property>
        </bean>
        
         
          
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            
            <property name="prefix" value="/" />
            <property name="suffix" value=".jsp" />
        </bean>
        
    
        
        
        <mvc:resources location="/css/" mapping="/css/**" />
        <mvc:resources location="/images/" mapping="/images/**" />
        <mvc:resources location="/ATTACHMENT/" mapping="/ATTACHMENT/**" />
        
    </beans>

config.properties文件为:

jdbc.driverClassName=com.mysql.jdbc.Driver
    
    jdbc.url=jdbc\:mysql\://localhost\:3306/test?useUnicode\=true&characterEncoding\=UTF-8
    
    jdbc.username=root
    
    jdbc.password=123
    
    hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
    
    BoneCP.idleConnectionTestPeriod=60
    
    BoneCP.idleMaxAge=60
    
    BoneCP.maxConnectionsPerPartition=5
    
    BoneCP.minConnectionsPerPartition=1
    
    BoneCP.partitionCount=3
    
    BoneCP.acquireIncrement=2  
    
    BoneCP.statementsCacheSize=0 
      
    BoneCP.releaseHelperThreads=3

web.xml文件为:

<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>Archetype Created Web Application</display-name>
      <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath*:applicationContext*.xml</param-value>
        </context-param>
        
           
          
        <listener>  
            <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>  
        </listener>  
        
           
          
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
        
        
        <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>
            <init-param>
                <param-name>forceEncoding</param-name>
                <param-value>true</param-value>
            </init-param>
        </filter>
        <filter-mapping>
            <filter-name>characterEncodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
        
        
        
        <filter>
            <filter-name>hibernateFilter</filter-name>
            <filter-class>
                org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter
            </filter-class>
        </filter>
        <filter-mapping>
            <filter-name>hibernateFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
        
        
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.jpg</url-pattern>    
        </servlet-mapping> 
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.png</url-pattern>    
        </servlet-mapping>     
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.gif</url-pattern>    
        </servlet-mapping> 
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.woff</url-pattern>    
        </servlet-mapping> 
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.ttf</url-pattern>    
        </servlet-mapping>          
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.map</url-pattern>    
        </servlet-mapping>      
        <servlet-mapping>      
            <servlet-name>default</servlet-name>   
            <url-pattern>*.js</url-pattern>   
        </servlet-mapping>  
        <servlet-mapping>       
            <servlet-name>default</servlet-name>      
            <url-pattern>*.css</url-pattern>     
        </servlet-mapping>  
        <servlet-mapping>       
            <servlet-name>default</servlet-name>      
            <url-pattern>*.html</url-pattern>     
        </servlet-mapping>
        
        
        <servlet>
            <servlet-name>dispatcherServlet</servlet-name>
            <servlet-class>
                org.springframework.web.servlet.DispatcherServlet
            </servlet-class>
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath*:/spring-mvc.xml</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>dispatcherServlet</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    
        <welcome-file-list>
            <welcome-file>/index.html</welcome-file>
        </welcome-file-list>
    </web-app>

User实体类:

package com.fendo.entity;
    
    import java.io.Serializable;
    
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.GeneratedValue;
    import javax.persistence.GenerationType;
    import javax.persistence.Id;
    import javax.persistence.Table;
    
    @Entity
    @Table(name = "tb_user")
    public class User implements Serializable {
    
        private static final long serialVersionUID = 7419229779731522702L;
    
        @Id
        @GeneratedValue(strategy = GenerationType.IDENTITY)
        @Column(name = "id")
        private Long id;
        
        @Column(name="user_name")
        private String name;
        
        @Column(length = 50)
        private String account;
        public Long getId() {
            return id;
        }
    
        public void setId(Long id) {
            this.id = id;
        }
    
        public String getAccount() {
            return account;
        }
    
        public void setAccount(String account) {
            this.account = account;
        }
        public static long getSerialversionuid() {
            return serialVersionUID;
        }
    
    	public String getName() {
    		return name;
    	}
    
    	public void setName(String name) {
    		this.name = name;
    	}
        
        
    }

UserDao类:

package com.fendo.dao;
    
    import org.springframework.data.jpa.repository.JpaRepository;
    
    import com.fendo.entity.User;
    
    public interface UserDao extends JpaRepository<User, Long> {
    	
    }

UserService类:

package com.fendo.service;
    
    import java.util.List;
    
    import javax.transaction.Transactional;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.jdbc.core.JdbcTemplate;
    import org.springframework.stereotype.Service;
    
    import com.fendo.dao.UserDao;
    import com.fendo.entity.User;
    
    @Service
    @Transactional
    public class UserService {
    	
        @Autowired
        private UserDao userDao;
        
        
        
        public String add(User user){
            userDao.save(user);
            return "添加成功！";
        }
        
        public String addUser(String account){
            User user = new User();
            user.setAccount(account);
            userDao.save(user);
            return "添加成功！";
        }
        
        public User getOneUser(Long id){
            return userDao.findOne(id);
        }
        
        public List<User> findAll(){
        	return userDao.findAll();
        }
        
    }

UserController类:

package com.fendo.controller;
    
    import java.util.List;
    
    import javax.persistence.Column;
    
    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.fendo.entity.User;
    import com.fendo.service.UserService;
    
    @Controller
    @RequestMapping(value="user")
    public class UserController {
    
        @Autowired
        private UserService userService;
        
        @RequestMapping("/addUser")    
        public ModelAndView addPerson(User user){    
            System.out.println("页面数据："+user.toString());    
                
            //加入数据    
            userService.add(user);    
                
            //查数据    
            List<User> ls=userService.findAll();
              
            //存起来    
            ModelAndView modelAndView=new ModelAndView();    
            modelAndView.setViewName("success");    
            modelAndView.addObject("user", ls);  
            return modelAndView;    
        } 
    	
    }

index.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"    
        pageEncoding="utf-8"%>    
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">    
    <html>    
    <head>    
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">    
    <title>注册页面</title>    
    </head>    
    <body>    
        <form action="user/addUser" method="post">    
            name:<input type="text" name="name"/><br/>    
            <input type="submit" value="添加"/><br/>    
        </form>    
    </body>    
    </html>

success.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    
        pageEncoding="UTF-8"%>    
    <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>        
        
    <%@ page isELIgnored="false" %>    
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">    
    <html>    
    <head>    
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">    
    <title>Insert title here</title>    
    </head>    
    <body>    
        <table border="1">    
            <tr>    
                <th>姓名</th>    
            </tr>   
           <c:forEach items="${user}" var="p">    
                <tr>    
                    <td>${p.name}</td>    
                </tr>    
            </c:forEach>  
        </table>    
    </body>    
    </html>

加入JdbcTemplate

然后在applicationContext.xml中注入JdbcTemplate

<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"
            p:dataSource-ref="dataSource" />

新建JdbcDao类:

package com.fendo.dao;
    
    import java.util.List;
    
    import com.fendo.entity.User;
    
    public interface JdbcDao {
    
    	public String searchUserName(int id);
    	public List<User> findAll();
    }

JdbcDaoImp实现类:

package com.fendo.dao.imp;
    
    import java.util.List;
    import java.util.Map;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.jdbc.core.JdbcTemplate;
    import org.springframework.stereotype.Service;
    
    import com.fendo.dao.JdbcDao;
    import com.fendo.entity.User;
    
    @Service
    public class JdbcDaoImp implements JdbcDao{
    
    	@Autowired
    	JdbcTemplate jdbcTemplate;
    
    	@Override
    	public String searchUserName(int id) {
            String sql = "select user_name from tb_user where id=?";  
            // 返回类型为String(String.class)  
            return jdbcTemplate.queryForObject(sql, String.class, id);  
    	}
    
    	@Override
    	public List<User> findAll() {
    		String sql="select * from tb_user";
    		List<Map<String,Object>> lists = jdbcTemplate.queryForList(sql); 
    		return User.toObject(lists);  
    	}
    
    }

在User实体类中加入:

public static User toObject(Map map) {  
    		User user = new User();  
    		user.setId((Long) map.get("id"));  
    		user.setName((String) map.get("user_name"));  
    	    return user;  
    	}  
    	  
    	public static List toObject(List<Map<String,Object>> lists){  
    	    List users = new ArrayList();  
    	    for (Map map : lists) {  
    	        User user =  User.toObject(map);  
    	        if (user != null) {  
    	        	users.add(user);  
    	        }  
    	    }  
    	    return users;  
    	}

然后在UserController注入:

@Autowired
        private JdbcDaoImp jdbcDaoImp;

写个获取所有数据的Controller

@RequestMapping("/getAll")
        public ModelAndView getAll(){
        	List<User> lst=jdbcDaoImp.findAll();
            ModelAndView modelAndView=new ModelAndView();    
            modelAndView.setViewName("success");    
            modelAndView.addObject("user", lst);  
        	return modelAndView;
        }

**三、测试功能**

运行项目访问:[http://localhost:8099/JPA/index.jsp][http_localhost_8099_JPA_index.jsp]

效果如下:

![20170610231940841][]

输入用户名点击添加,添加成功之后,打印所有的数据:

![20170610232106062][]

完整示例: [http://download.csdn.net/detail/u011781521/9866948][http_download.csdn.net_detail_u011781521_9866948] 没有加入JdbcTemplate

通过JdbcTemplate获取所有的数据: [http://localhost:8099/JPA/user/getAll][http_localhost_8099_JPA_user_getAll]

![20170611132706017][]

带JdbcTemplate的示例: [http://download.csdn.net/detail/u011781521/9867172][http_download.csdn.net_detail_u011781521_9867172]

[20170611132813348]: /images/20220614/c9c9a02e90f54bb881d659d4a346d322.png
[http_localhost_8099_JPA_index.jsp]: http://localhost:8099/JPA/index.jsp
[20170610231940841]: /images/20220614/86107314c5e54b52b90745cf471914d5.png
[20170610232106062]: /images/20220614/335d190d1329429b8f4dd3c5b72e5bb5.png
[http_download.csdn.net_detail_u011781521_9866948]: http://download.csdn.net/detail/u011781521/9866948
[http_localhost_8099_JPA_user_getAll]: http://localhost:8099/JPA/user/getAll
[20170611132706017]: /images/20220614/dfd5f6d5131042fe9e99df2d2211cf31.png
[http_download.csdn.net_detail_u011781521_9867172]: http://download.csdn.net/detail/u011781521/9867172