这段时间一直在观看Spring框架，自己去查询资料手动的去配置Spring文件，和Jdbc连接数据库进行crud的操作:
使用Maven加载项目中所需要的依赖jar:
<!-- servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<!-- jsp -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.2.1</version>
</dependency>
<!-- mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.37</version>
</dependency>
<!-- spring-context-support 开启spring 注解-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.0.0.RELEASE</version>
</dependency>
<!-- spring-jdbc 连接数据库-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.0.0.RELEASE</version>
</dependency>
<!-- spring-tx 配置事物-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.0.0.RELEASE</version>
</dependency>
<!-- spring-webmvc mvc中依赖的jar-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.0.0.RELEASE</version>
</dependency>
<!-- log4j -->
<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>
<!-- slf4j-api -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.7</version>
</dependency>
web.xml配置：
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<!-- 以 org.springframework.web.servlet.DispatcherServlet 启动spring 容器-->
<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:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 项目访问的方式 可以配置成 *.do -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--filter过滤器配置 中文乱码 -->
<filter>
<filter-name>encoding</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>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
spring-mvc.xml：
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<!-- 开启注解处理器: -->
<context:annotation-config/>
<!-- 出来当前 com.easypt 下面的注解进行自动装配 -->
<context:component-scan base-package="com.easypt"/>
<!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" ></property>
<property name="suffix" value=".jsp"></property>
<property name="order" value="1"/>
</bean>
<!-- 配置数据源-->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/test"></property>
<property name="username" value="root"></property>
<property name="password" value="root"></property>
</bean>
<!-- 使用 org.springframework.jdbc.core.JdbcTemplate 进行数据库的操作-->
<bean id="jdbcTemplateObject" class="org.springframework.jdbc.core.JdbcTemplate">
<constructor-arg ref="dataSource"></constructor-arg>
</bean>
<!-- 静态资源-->
<mvc:resources mapping="/pages/**" location="/WEB-INF/pages/" />
<mvc:annotation-driven/> <!-- spring MVC为@Controllers分发请求所必须的-->
</beans>
使用:
@Component
public class UserDaoImpl implements UserDao{
@Autowired
JdbcTemplate jdbcTemplateObject;
/**
* 添加用户信息:
*/
public void createUser(User user) {
System.err.println(user.getName()+"---"+user.getPassword()+"----jdbcTemplateObject"+jdbcTemplateObject);
String SQL = "insert into test (name, password) values (?, ?)";
String sql= "INSERT INTO test(name,password) VALUES(?,?)";
int update = jdbcTemplateObject.update(SQL,user.getName(),user.getPassword());
if(update<=0) {
System.out.println("添加失败");
}else {
System.out.println("添加成功");
}
}
/**
* 查询用户信息:
*/
public User findOne(int id) {
String SQL = "select * from test where id = ?";
User student = jdbcTemplateObject.queryForObject(SQL,
new Object[]{id}, new StudentMapper());
return student;
}
spring mvc配置所有的配置信息都写过注释，这所有的配置以及测试并且运行过，
在配置过程中发现，spring的强大，spring bean的自动装配使得spring更加的方便和好用
也就是IOC和Dl的强大之处