最近进入新的公司，别人数据库层直接使用Spring的JdbcTemplate和NamedParameterJdbcTemplate，之前mybatis，hibernate都用，写了个demo用了一下感觉这个也比较好用
1.环境搭建： Spring4.1.6+Springmvc+mysql5.6+eclipse4.2
项目的创建使用eclipse就不说了
pom.xml
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.share</groupId>
<artifactId>jdbc</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<!-- spring的版本号 -->
<org.springframework.version>4.1.6.RELEASE</org.springframework.version>
<!-- mybatis版本号
<mybatis.version>3.3.0</mybatis.version>-->
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!-- 导入Mysql数据库链接jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5-pre10</version>
</dependency>
<!-- JSTL标签类 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- 日志文件管理包 -->
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- 格式化对象，方便输出日志 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.1.41</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.12</version>
</dependency>
<!-- log end -->
<!-- 映入JSON -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<!-- 上传组件包 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.9</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-servlet-api</artifactId>
<version>8.0.23</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-support</artifactId>
<version>2.0.8</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
</dependencies>
</project>
2.配置文件的创建
jdbc.properties(数据库配置文件)
jdbc.driverClassName=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/learn?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=root
beans.xml(spring配置文件)
<?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.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd ">
<!-- 支持注解 -->
<context:annotation-config/>
<!-- 组件扫描 -->
<context:component-scan base-package="com.share.*"/>
<!--数据库配置:配置jdbc.properties -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 3、配置dataSource数据源c3p0 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driverClassName}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- <property name="maxPoolSize" value="${c3p0.pool.maxPoolSize}"/>
<property name="minPoolSize" value="${c3p0.pool.minPoolSize}"/>
<property name="initialPoolSize" value="${c3p0.pool.initialPoolSize}"/>
<property name="acquireIncrement" value="${c3p0.pool.acquireIncrement}"/> -->
</bean>
<!-- JDBCTemplate注入 -->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name = "dataSource" ref="dataSource"/>
</bean>
<!-- namedParameterJdbcTemplate注入，此处在构造器中 -->
<bean id="namedParameterJdbcTemplate" class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate">
<constructor-arg ref="dataSource"/>
</bean>
</beans>
springmvc.xml（springmvc配置文件）
<?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.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd ">
<!-- 支持注解驱动 -->
<mvc:annotation-driven/>
<!-- 组件扫描的包 -->
<context:component-scan base-package="com.share.*"/>
<!-- 静态资源目录 -->
<mvc:resources mapping="/js/**" location="/js/" />
<mvc:resources mapping="/images/**" location="/images/" />
<mvc:resources mapping="/css/**" location="/css/" />
<mvc:resources mapping="/common/**" location="/common/" />
<!-- 配置视图解析器 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 通过setter方法注入前缀 -->
<property name="prefix" value="/WEB-INF/pages/"/>
<!-- 通过setter方法注入后缀 -->
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 文件上传配置 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="20971520"/><!--byte为单位，最高上传20M-->
<property name="defaultEncoding" value="UTF-8"/>
<property name="resolveLazily" value="true"/>
</bean>
<!-- 配置文件上传异常，文件超出上传限制时抛出异常信息，跳到异常页面 -->
<bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
<property name="exceptionMappings">
<props>
<!-- 遇到MaxUploadSizeExceededException异常时，自动跳转到/WEB-INF/jsp/error_fileupload.jsp页面 -->
<prop key="org.springframework.web.multipart.MaxUploadSizeExceededException">error_fileupload</prop>
</props>
</property>
</bean>
</beans>
log4j.xml
log4j.rootLogger=INFO,stdout,file
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout.ConversionPattern=%-d{yyyy-MM-dd HH\:mm\:ss,SSS} [%c]-[%p] %m%n
log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
#log4j.appender.file.File=${spring_springmvc_jpa.root}/shirodemo.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c] [%p] - %m%n
log4j.logger.org.hibernate.tool.hbm2ddl=info
实体类：User.java
public class User implements Serializable {
private static final long serialVersionUID = 1L;
private long id;//用户id
private String username;//用户名
private int age;//用户年龄
private Date birthday;//用户生日
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public User() {
super();
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public User(String username, int age, Date birthday) {
super();
this.username = username;
this.age = age;
this.birthday = birthday;
}
@Override
public String toString() {
return "User [username=" + username + ", age=" + age + ", birthday="
+ birthday + "]";
}
}
dao层：BaseDao.java
package com.share.dao;
/**
* 基本dao
* @author share
*
*/
@Repository
public class BaseDao {
@Autowired
private JdbcTemplate jdbcTemplate;
@Autowired
private NamedParameterJdbcTemplate namedParameterJdbcTemplate;
/**
* 查询所有用户
* @param sql
* @return
*/
public List<Map<String, Object>> queryAll(String sql) {
System.out.println(jdbcTemplate + "&&" + namedParameterJdbcTemplate);
return jdbcTemplate.queryForList(sql);
}
/**
* 添加用户
* @param user
* @return
*/
public int addUser(User user) {
StringBuffer sqlKey = new StringBuffer("insert into user (");
StringBuffer sqlValue = new StringBuffer(" values ( ");
Map<String, Object> paramMap = new HashMap<String, Object>();
if(StringUtils.isNotBlank(user.getUsername())) {
sqlKey.append(" username, ");
sqlValue.append(" :username, ");
paramMap.put("username", user.getUsername());
}
if(StringUtils.isNotBlank(String.valueOf(user.getAge()))) {
sqlKey.append(" age");
sqlValue.append(" :age ");
paramMap.put("age", user.getAge());
}
sqlKey.append(" ) ");
sqlValue.append(" ) ");
sqlKey.append(sqlValue);
return namedParameterJdbcTemplate.update(sqlKey.toString(), paramMap);
}
/**
* 查找用户
*/
public User findUserByName(String username) {
String sql = "select * from user where username = ?";
User user = jdbcTemplate.queryForObject(sql, new BeanPropertyRowMapper<User>(User.class), username);//此处需要在实现RowMapper接口了
System.err.println(user.getUsername() + "::" + user.getAge());
Map<String, Object> queryForMap = jdbcTemplate.queryForMap(sql, username);
System.out.println("=========");
for (Map.Entry<String, Object> map : queryForMap.entrySet()) {
System.out.println(map.getKey() + "**" + map.getValue());
}
return user;
}
}
service层BaseService.java
/**
* @author caifan
*
* 2015年6月20日
*/
@Service
public class BaseService {
@Autowired
private BaseDao baseDao;
/**
* 基本service
* @return
*/
public List<Map<String, Object>> findAllUser() {
String sql = "select * from user order by age desc";
List<Map<String,Object>> queryForList = baseDao.queryAll(sql);
for (Map<String, Object> maps : queryForList) {
System.out.println( "------------");
for (Map.Entry<String, Object> map : maps.entrySet()) {
System.out.println(map.getKey() + ":" + map.getValue());
}
System.out.println( "------------");
}
return queryForList;
}
/**
* 添加用户
* @param user
* @return
*/
public int addUser(User user) {
return baseDao.addUser(user);
}
public User findByName(String username) {
return baseDao.findUserByName(username);
}
}
控制层： UserController.java
/**
*
*/
package com.share.controller;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.share.domain.User;
import com.share.service.BaseService;
/**
* @author caifan
*
* 2015年6月20日
*/
@Controller
public class UserController {
@Autowired
private BaseService baseService;
@RequestMapping(value="/alluser")
public String findAllUser(HttpServletRequest request) {
List<Map<String, Object>> userList = baseService.findAllUser();
request.setAttribute("userList", userList);
return "alluser";
}
@RequestMapping(value="/adduser")
public String addUser(HttpServletRequest request) {
User user = new User();
user.setUsername("tom");
user.setAge(22);
int userResult = baseService.addUser(user);
System.out.println(userResult);
request.setAttribute("user", user);
return "adduser";
}
@RequestMapping(value="/finduser")
public String findUser(HttpServletRequest request) {
String username = "tom";
User user = baseService.findByName(username);
request.setAttribute("user", user);
return "findUser";
}
}
附件中的jsp仅用于测试