jdbcTemplate + spring + springmvc 整合案例 超级详细滴案例
1.创建maven - webapp项目
![]()
2.项目名称xxx
![]()
3.pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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.baijie</groupId>
<artifactId>SpringmvcProject3.23</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>SpringmvcProject3.23 Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<!--统一设置spring框架相关jar的版本号-->
<spring.version>5.0.5.RELEASE</spring.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.0.5.RELEASE</version>
</dependency>
<!-- aspectj的织入（aop坐标） -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.13</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<!--<scope>test</scope>-->
</dependency>
<!-- C3P0连接池 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- Druid连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
<!-- mysql驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.39</version>
</dependency>
<dependency>
<grou
4.springmvc_config.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!--配置注解扫描-->
<context:component-scan base-package="baijie"/>
<!--读取外部jdbc的文件-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!--c3p0配置spring连接池-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${driver}"/>
<property name="jdbcUrl" value="${url}"/>
<property name="user" value="${user}"/>
<property name="password" value="${password}"/>
<!--配置连接池常用属性-->
<property name="initialPoolSize" value="${initSize}"/>
<property name="maxPoolSize" value="${maxSize}"/>
<property name="minPoolSize" value="${minSize}"/>
</bean>
<!--配置jdbc模板对象-->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--配置事务管理器对象-->
<bean id="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--配置内部资源视图解析器-->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- /jsp/success.jsp -->
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!--扫描组件：扫描哪些包下面的类添加了注解-->
<context:component-scan base-package="baijie"></context:component-scan>
</beans>
5.jdbc.properties
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/baijie
user=root
password=123456
initSize=10
minSize=20
maxSize=1000
6.web.xml
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<!--配置前端控制器+springMVC配置文件-->
<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:springmvc_config.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>
</web-app>
7.pojo.User类
package baijie.pojo;
public class User {
private int id;
private String username;
private String password;
public User(int id, String username, String password) {
this.id = id;
this.username = username;
this.password = password;
}
public User() {
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
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;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", username='" + username + '\'' +
", password='" + password + '\'' +
'}';
}
}
8.dao
package baijie.dao;
import baijie.pojo.User;
import java.util.List;
public interface UserDao {
//查询数据
public List<User> findAll();
}
package baijie.dao;
import baijie.pojo.User;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;
import javax.annotation.Resource;
import java.util.List;
@Repository("userDao")
public class UserDaoImpl implements UserDao{
//注入jdbcTemplate对象
@Resource
private JdbcTemplate jdbcTemplate;
//查询所有数据
@Override
public List<User> findAll() {
String sql="select * from user";
List<User> userList=jdbcTemplate.query(sql,
new BeanPropertyRowMapper<User>(User.class));
return userList;
}
}
9.service
package baijie.service;
import baijie.pojo.User;
import java.util.List;
public interface UserService {
//查询数据
public List<User> findAllUser();
}
package baijie.service;
import baijie.dao.UserDao;
import baijie.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
@Service
@Transactional(isolation = Isolation.REPEATABLE_READ,propagation = Propagation.REQUIRED)//配置公共的事务特性
public class UserServiceImpl implements UserService{
//调用Dao层
@Autowired
private UserDao userDao;
//查询所有数据
@Override
public List<User> findAllUser() {
return userDao.findAll();
}
}
10.control
package baijie.control;
import baijie.dao.UserDao;
import baijie.pojo.User;
import baijie.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.annotation.Resource;
import javax.servlet.http.HttpServlet;
import java.util.List;
@Controller
@RequestMapping("/user")
public class UserControl {
@Resource
private UserService userService;
//查询所有
@RequestMapping(value = "/showUser")
public String showUserMethod(){
List<User>allMethod=userService.findAllUser();
System.out.println(allMethod);
return "show";
}
}
11.index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h2><a href="user/showUser">点我wwwwwww</a></h2>
</body>
</html>
12.show.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h1>sssssssssssssss</h1>
</body>
</html>
浙公网安备 33010602011771号