SSM整合：SpringMVC、Spring、Mybatis

其他 2019-04-02 13:21:05 阅读次数: 0

创建父工程

创建统一的父工程，用来管理依赖及其版本
可以删除src目录，只写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.ityang.parent</groupId>
    <artifactId>ssm</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <!-- 集中定义依赖版本号 -->
    <properties>
        <junit.version>4.12</junit.version>
        <spring.version>4.3.13.RELEASE</spring.version>
        <mybatis.version>3.2.8</mybatis.version>
        <mybatis.spring.version>1.2.2</mybatis.spring.version>
        <mybatis.paginator.version>1.2.15</mybatis.paginator.version>
        <mysql.version>5.1.32</mysql.version>
        <slf4j.version>1.6.4</slf4j.version>
        <jackson.version>2.9.0</jackson.version>
        <druid.version>1.0.9</druid.version>
        <httpclient.version>4.3.5</httpclient.version>
        <jstl.version>1.2</jstl.version>
        <servlet-api.version>2.5</servlet-api.version>
        <jsp-api.version>2.0</jsp-api.version>
        <joda-time.version>2.5</joda-time.version>
        <commons-lang3.version>3.3.2</commons-lang3.version>
        <commons-io.version>1.3.2</commons-io.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <!-- 单元测试 -->
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <version>${spring.version}</version>
                <scope>test</scope>
            </dependency>
            <!-- Spring -->
            <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-webmvc</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-aspects</artifactId>
                <version>${spring.version}</version>
            </dependency>

            <!-- Mybatis -->
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>${mybatis.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>${mybatis.spring.version}</version>
            </dependency>
            <dependency>
                <groupId>com.github.miemiedev</groupId>
                <artifactId>mybatis-paginator</artifactId>
                <version>${mybatis.paginator.version}</version>
            </dependency>

            <!-- MySql -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
                <scope>runtime</scope>
            </dependency>

            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
                <version>${slf4j.version}</version>
            </dependency>

            <!-- Jackson Json处理工具包 -->
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
                <version>${jackson.version}</version>
            </dependency>

            <!-- 连接池 -->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${druid.version}</version>
            </dependency>

            <!-- httpclient -->
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpclient</artifactId>
                <version>${httpclient.version}</version>
            </dependency>

            <!-- JSP相关 -->
            <dependency>
                <groupId>jstl</groupId>
                <artifactId>jstl</artifactId>
                <version>${jstl.version}</version>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
                <version>${servlet-api.version}</version>
                <scope>provided</scope>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jsp-api</artifactId>
                <version>${jsp-api.version}</version>
                <scope>provided</scope>
            </dependency>

            <!-- 时间操作组件 -->
            <dependency>
                <groupId>joda-time</groupId>
                <artifactId>joda-time</artifactId>
                <version>${joda-time.version}</version>
            </dependency>

            <!-- Apache工具组件 -->
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
                <version>${commons-lang3.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-io</artifactId>
                <version>${commons-io.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <build>
    <finalName>${project.artifactId}</finalName>
    <plugins>
        <!-- 资源文件拷贝插件 -->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-resources-plugin</artifactId>
            <version>2.7</version>
            <configuration>
                <encoding>UTF-8</encoding>
            </configuration>
        </plugin>
        <!-- java编译插件 -->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.2</version>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
                <encoding>UTF-8</encoding>
            </configuration>
        </plugin>
    </plugins>
    <pluginManagement>
        <plugins>
            <!-- 配置Tomcat插件 -->
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
            </plugin>
        </plugins>
    </pluginManagement>
    </build>
</project>

Spring整合SpringMVC

1、创建模块工程，引入依赖
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">
    <parent>
        <artifactId>ssm</artifactId>
        <groupId>com.ityang.parent</groupId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.ityang</groupId>
    <artifactId>demo-ssm</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
        </dependency>
        <!-- spring整合mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jsp-api</artifactId>
        </dependency>
    </dependencies>
    <build>
		<plugins>
			<!-- 配置Tomcat插件 -->
			<plugin>
				<groupId>org.apache.tomcat.maven</groupId>
				<artifactId>tomcat7-maven-plugin</artifactId>
				<configuration>
					<port>8080</port>
					<path>/</path>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

2、web.xml中配置spring核心监听器

    <!-- 指定spring配置文件路径 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/applicationContext*.xml</param-value>
    </context-param>
    <!-- 工程启动时，创建IOC容器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

3、log4j 配置日志输出（log4j.properties）

### 设置###
log4j.rootLogger = debug,stdout,D,E

### 输出信息到控制抬 ###
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n

### 输出DEBUG 级别以上的日志到=E://logs/error.log ###
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = E://logs/log.log
log4j.appender.D.Append = true
log4j.appender.D.Threshold = DEBUG 
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n

### 输出ERROR 级别以上的日志到=E://logs/error.log ###
log4j.appender.E = org.apache.log4j.DailyRollingFileAppender
log4j.appender.E.File =E://logs/error.log 
log4j.appender.E.Append = true
log4j.appender.E.Threshold = ERROR 
log4j.appender.E.layout = org.apache.log4j.PatternLayout
log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n

4、创建jdbc.properties

jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis
jdbc.username=root
jdbc.password=123456

5、创建spring核心配置文件applicationContext.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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context" 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/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!-- 引入外部的属性资源文件 -->
    <context:property-placeholder location="classpath:jdbc.properties" />
    <!-- 开启spring注解扫描，此处扫描的是业务包，controller交给springmvc扫描，mapper不用扫描，spring会自己创建mapper -->
    <context:component-scan base-package="com.ityang.service"></context:component-scan>
    <!-- 配置数据源，什么数据源都可以，c3p0也行,这里我们配置druid -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driverClass}"></property>
        <property name="url" value="${jdbc.url}"></property>
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>
</beans>

6、web.xml中配置springmvc入口

    <!-- springmvc入口 -->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 指定springmvc配置文件路径 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/springmvc-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <!-- /表示拦截除了jsp以外的所有请求 -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>

7、创建springmvc配置文件（springmvc-servlet.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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!-- 开启注解扫描，扫描controller包 -->
    <context:component-scan base-package="com.ityang.controller"></context:component-scan>
    <!-- mvc注解驱动 -->
    <mvc:annotation-driven></mvc:annotation-driven>
    <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    <!-- 入口处拦截除了jsp以外的所有请求(包括静态资源),这里处理静态资源拦截问题 -->
    <mvc:default-servlet-handler/>
</beans>

8、创建包结构，引入资源
在这里插入图片描述
9、创建Controller类并访问测试

@Controller
@RequestMapping("user")
public class UserController {
    @RequestMapping("list")
    public String getList(){
        return "users";
    }
}

在这里插入图片描述

Spring整合Mybatis

1、创建aplicationContext-mybatis.xml文件
aplicationContext-mybatis.xml文件，专门用来存放spring整合mybatis的配置

<?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:context="http://www.springframework.org/schema/context" 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/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">
        
        <!-- 把SqlSessionFactory交给spring管理 -->
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        	<!-- 注入数据源 -->
        	<property name="dataSource" ref="dataSource"></property>
        	<!-- 注入mybatis配置文件路径 -->
        	<property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property>
        </bean>        
</beans>

2、配置mapper接口
在applicationContext.xml中我们只配置了扫描service层，那么dao包也要扫描，怎么办？
在mybatis中，dao类也可以称为mapper类，为了简化代码，我们使用maper接口的动态代理实现。现在，就要把mapper接口的动态代理实现交给spring管理（动态代理终极优化）

    <!-- aplicationContext-mybatis.xml文件中把mapper接口的动态代理实现交给spring来管理 -->
    <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
        <!-- 注入SqlSessionFactory -->
        <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
        <!-- 注入mapper接口 -->
        <property name="mapperInterface" value="com.ityang.mapper.UserMapper"></property>
    </bean>

3、创建mapper接口和映射文件

public interface UserMapper {
    /**
     * 查询所有用户
     * @return
     */
    public List<User> findAllUsers();
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- namespace与接口的全路径名一致 -->
<mapper namespace="com.ityang.mapper.UserMapper">
    <!-- id与接口中的方法名一致 -->
    <select id="findAllUsers" resultType="User">
        select * from tb_user
    </select>
</mapper>

4、创建mybatis核心配置文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
        <!-- 开启驼峰匹配：完成从经典的数据库列名（下划线）到驼峰式属性的映射 -->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
    <typeAliases>
        <!-- 类型别名简化 -->
        <package name="com.ityang.domain"/>
    </typeAliases>
    <mappers>
        <mapper resource="mybatis/mapper/UserMapper.xml"/>
    </mappers>
</configuration>

5、Spring整合Mybatis优化

  • Mapper接口的配置过于麻烦，每一个接口要都配置；
    优化：aplicationContext-mybatis.xml配置接口扫描
    <!-- 配置mapper接口扫描,mapper接口动态代理交给spring管理 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ityang.mapper"></property>
    </bean>
  • Mapper映射文件，每次都需要在mybatis-config.xml中引入；
    优化：aplicationContext-mybatis.xml中注入映射文件路径
    <!-- 把SqlSessionFactory交给spring管理 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据源 -->
        <property name="dataSource" ref="dataSource"></property>
        <!-- 注入mybatis配置文件路径 -->
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property>
        <!-- 注入映射文件路径,mybatis/mapper/**/*.xml表示匹配mybatis/mapper目录及子目录下所有的xml文件 -->
        <property name="mapperLocations" value="classpath:mybatis/mapper/**/*.xml"></property>
    </bean>
  • mybatis别名能否交给spring管理？
    优化：aplicationContext-mybatis.xml中配置别名扫描
    <!-- 把SqlSessionFactory交给spring管理 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据源 -->
        <property name="dataSource" ref="dataSource"></property>
        <!-- 注入mybatis配置文件路径 -->
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property>
        <!-- 注入映射文件路径,mybatis/mapper/**/*.xml表示匹配mybatis/mapper目录及子目录下所有的xml文件 -->
        <property name="mapperLocations" value="classpath:mybatis/mapper/**/*.xml"></property>
        <!-- 别名扫描 -->
        <property name="typeAliasesPackage" value="com.ityang.domain"></property>
    </bean>

到此基本整合完毕

查询用户信息案例

1、编写Controller

@Controller
@RequestMapping("user")
public class UserController {

    @Autowired
    private UserService userService;

    @RequestMapping("list")
    public String getList(Model model){
        List<User> users = userService.findAllUsers();
        model.addAttribute("users",users);
        return "users";
    }
}

2、编写Service

@Service
public class UserServiceImpl implements UserService{
    @Autowired
    private UserMapper userMapper;
    @Override
    public List<User> findAllUsers() {
        List<User> users = userMapper.findAllUsers();
        return users;
    }
}

3、编写users.jsp页面

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<!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>
	<link rel="stylesheet" type="text/css" href="/css/user.css" />
</head>
<body>
	<table id="customers">
		<tr>
			<th>编号</th>
			<th>用户名</th>
			<th>姓名</th>
			<th>年龄</th>
			<th>性别</th>
			<th>出生日期</th>
			<th>创建时间</th>
			<th>更新时间</th>
		</tr>
		<c:forEach items="${users}" var="user">
			<tr>
				<td>${user.id}</td>
				<td>${user.userName}</td>
				<td>${user.name}</td>
				<td>${user.age}</td>
				<td>
					<c:choose>
						<c:when test="${user.sex==1}">
							男
						</c:when>
						<c:otherwise>
							女
						</c:otherwise>
					</c:choose>
				</td>
				<td>
					<fmt:formatDate value="${user.birthday}" pattern="yyyy-MM-dd"/>
				</td>
				<td>
					<fmt:formatDate value="${user.created}" pattern="yyyy-MM-dd HH:mm:ss"/>
				</td>
				<td>
					<fmt:formatDate value="${user.updated}" pattern="yyyy-MM-dd HH:mm:ss"/>
				</td>
			</tr>
		</c:forEach>

	</table>
</body>
</html>

4、启动测试
在这里插入图片描述

spring配置事务

增删改操作是要放在事务里的，多个增删改操作，要么全部成功，要么全部取消，保证数据的一致性与正确性。
创建applicationContext-tx.xml文件，专门存放与事物相关的配置

<?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:context="http://www.springframework.org/schema/context" 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/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 配置事务属性 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true" />
            <tx:method name="*" />
        </tx:attributes>
    </tx:advice>
    <!-- 配置事务切面 -->
    <aop:config>
        <aop:pointcut expression="execution(* com.ityang.service.impl.*.*(..))" id="pt"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt"/>
    </aop:config>
</beans>

解决中文乱码问题

在web.xml中配置一个编码过滤器，集中解决中文参数乱码问题

    <!-- 字符编码过滤器 -->
    <filter>
        <filter-name>encodingFilter</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>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

日期处理

1、有时候，用户输入的日期格式和系统需要接收的日期格式不符，就会报400参数列表错误，怎么办？

  • 在实体类的日期属性上加@DateTimeFormat注解
    // 出生日期
    @DateTimeFormat(pattern = "yyyy-MM-dd")
    private Date birthday;

2、如果我们需要单独接收一个日期参数，例如，在日常工作中，经常要以日期作为条件查询数据，那么springmvc怎么单独接收日期类型参数呢？

  • 接收日期类型参数时指定格式
    @RequestMapping("date")
    public String test(@DateTimeFormat(pattern = "yyyy-MM-dd")@RequestParam("date")Date date){
        System.out.println(date);
        return "hello";
    }

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