Spring SpringMvc Mybatis 整合
1. 创建Maven项目，pom.xml，导入依赖
<properties>
<project-build-sourceEncode>UTF-8</project-build-sourceEncode>
<java-compiler-source>1.8</java-compiler-source>
<java-compiler-target>1.8</java-compiler-target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- 导入SSM需要的jar -->
<!-- MyBatis Generator -->
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<!-- Spring MVC -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- Spring单元测试 -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.7.RELEASE</version>
<scope>test</scope>
</dependency>
<!-- Spring JDBC -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- Spring 面向切面 -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- MyBatis -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.2</version>
</dependency>
<!-- MyBatis 整合 Spring 的包 -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- 数据库连接池、驱动 -->
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</version>
</dependency>
<!-- https://mvnrepository.com/artifact/jstl/jstl -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- servlet API包 -->
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- 单元测试包 -->
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<!-- json -->
<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.47</version>
</dependency>
<!-- 阿里巴巴 druid 数据源 -->
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
<!--处理JSON格式数据-->
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.8</version>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
</dependencies>
然后在 resources 目录下创建项目需要的xml配置文件
2. applicationContext-dao.xml
Dao层，mybatis整合spring，通过spring管理 SqlSessionFactory、mapper代理对象。
这里用的是阿里的连接池，当然也可以用c3p0，个人建议用阿里
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 加载数据库连接信息 database.properties-->
<context:property-placeholder location="classpath:database.properties"/>
<!-- 配置数据源 dbcp连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="maxActive" value="10"/>
<property name="minIdle" value="5"/>
</bean>
<!-- 创建sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据源 -->
<property name="dataSource" ref="dataSource"/>
<!-- 所有Sql 映射文件路径 -->
<property name="mapperLocations">
<value>classpath:mapper/*.xml</value>
</property>
<!--为所有sql标签 返回值 设置别名-->
<property name="typeAliasesPackage" value="cn.wengzi.ssm.entity.Student"></property>
</bean>
<!-- 自动扫描 将Mapper接口生成代理注入到Spring -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- value 的包名 就是所有dao接口的包名 -->
<property name="basePackage" value="cn.wengzi.ssm.repository"/>
</bean>
</beans>
2.1 database.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/student?useUnicode=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=xxx
3. ApplicationContext-service
service层
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!--
Spring容器可以自动去扫描base-pack所指定的包或其子包下面的java类文件，
如果扫描到有@Component、@Controller、@Service 、@Repository等注解修饰的Java类，
则将这些类注册为spring容器中的bean。
-->
<context:component-scan base-package="cn.wengzi.ssm.service"/>
</beans>
4. ApplicationContext-tx.xml
配置Spring声明式事务
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"
>
<!-- Spring声明式事务-->
<!-- 配置事物管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置哪些方法需要添加什么事务-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!--Spring 事务的传播机制-->
<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="select*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="add*" propagation="REQUIRED"/>
<tx:method name="insert*" propagation="REQUIRED"/>
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="upd*" propagation="REQUIRED"/>
<tx:method name="del*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<aop:config>
<!-- 配置切点 -->
<aop:pointcut expression="execution(* cn.wengzi.ssm.service.*.*(..))" id="pointcut"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>
</aop:config>
</beans>
5. SpringMvc.xml
Springmvc整合spring框架，由springmvc管理controller
<?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/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--开启Controller包的注解
注意:如果扫描所有包,此标签必须写在SpringMvc-config.xml中
-->
<context:component-scan base-package="cn.wengzi.ssm.controller"/>
<!-- 针对静态资源不会进行拦截 .css .js .jpg..... -->
<mvc:default-servlet-handler/>
<!-- 会自动的去查找最新的处理器映射器 和处理器适配器并进行配置 -->
<mvc:annotation-driven>
<mvc:message-converters>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="objectMapper">
<bean class="com.fasterxml.jackson.databind.ObjectMapper">
<property name="dateFormat">
<bean class="java.text.SimpleDateFormat">
<!--处理JSON返回的日期格式-->
<constructor-arg type="java.lang.String" value="yyyy-MM-dd"/>
</bean>
</property>
</bean>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!--配置视图解析器-->
<!--<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>-->
</beans>
6. Log4j.properties
log4j.rootLogger=error,CONSOLE,A
log4j.addivity.org.apache=false
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=error
log4j.appender.CONSOLE.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} -%-4r [%t] %-5p %x - %m%n
log4j.appender.CONSOLE.Target=System.out
log4j.appender.CONSOLE.Encoding=gbk
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.A=org.apache.log4j.DailyRollingFileAppender
log4j.appender.A.File=${catalina.home}/logs/FH_log/PurePro_
log4j.appender.A.DatePattern=yyyy-MM-dd'.log'
log4j.appender.A.layout=org.apache.log4j.PatternLayout
log4j.appender.A.layout.ConversionPattern=[FH_sys] %d{yyyy-MM-dd HH:mm:ss} %5p %c{1}:%L : %m%n
7. Web.xml
前面配置的xml文件，需要在在Web.xml中配置，随着tomcat启动通过监听器将配置文件加载，
初始化Spring Ioc容器。
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<!--加载所有Spring配置文件-->
<param-value>classpath:ApplicationContext-*.xml</param-value>
</context-param>
<listener>
<!--配置Spring-web.jar提供的监听器,此监听器可以在服务器启动时初始化Ioc容器-->
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--拦截器 解决乱码-->
<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>
<!--配置DispatcherServlet-->
<servlet>
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!--加载SpringMvc-config.xml-->
<param-value>classpath:SpringMvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<!--所有请求都被SpringMvc拦截-->
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
8. 编写代码
8.1 实体类
package cn.wengzi.ssm.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.ToString;
import java.io.Serializable;
import java.util.Date;
@Data
@AllArgsConstructor
@NoArgsConstructor
@ToString
public class Student implements Serializable {
private Integer id;
private String name;
private Integer age;
private Date birthday;
}
8.2 DAO层
package cn.wengzi.ssm.repository;
import cn.wengzi.ssm.entity.Student;
import java.util.List;
public interface StudentRepository {
List<Student> findAll();
Student findById(Integer id);
int addStudent(Student student);
int updStudent(Student student);
int delStudent(Integer id);
}
8.3 Service层
package cn.wengzi.ssm.service;
import cn.wengzi.ssm.entity.Student;
import java.util.List;
public interface StudentService {
List<Student> findAll();
Student findById(Integer id);
int addStudent(Student student);
int updStudent(Student student);
int delStudent(Integer id);
}
package cn.wengzi.ssm.service.impl;
import cn.wengzi.ssm.entity.Student;
import cn.wengzi.ssm.repository.StudentRepository;
import cn.wengzi.ssm.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class StudentServiceImpl implements StudentService {
@Autowired
private StudentRepository studentRepository;
public List<Student> findAll() {
return studentRepository.findAll();
}
public Student findById(Integer id) {
return studentRepository.findById(id);
}
public int addStudent(Student student) {
return studentRepository.addStudent(student);
}
public int updStudent(Student student) {
return studentRepository.updStudent(student);
}
public int delStudent(Integer id) {
return studentRepository.delStudent(id);
}
}
8.3 Sql映射文件
<?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">
<mapper namespace="cn.wengzi.ssm.repository.StudentRepository">
<select id="findAll" resultType="Student">
select * from student
</select>
<select id="findById" parameterType="java.lang.Integer" resultType="Student">
select * from student where id = #{id}
</select>
<insert id="addStudent" parameterType="Student">
insert into student(name,age,birthday) values (#{name},#{age},#{birthday})
</insert>
<update id="updStudent" parameterType="Student">
update student set name = #{name},age = #{age},birthday = #{birthday} where id = #{id}
</update>
<delete id="delStudent" parameterType="java.lang.Integer">
delete from student wehere id = #{id}
</delete>
</mapper>
8.3 handler
package cn.wengzi.ssm.controller;
import cn.wengzi.ssm.entity.Student;
import cn.wengzi.ssm.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.List;
/**
* created Arley 19/8/10
*/
@RestController
@RequestMapping(value = "/student")
public class StudentHandler {
@Autowired
private StudentService studentService;
@ResponseBody
@GetMapping(value = "/findAll")
public List<Student> findAll() {
return studentService.findAll();
}
@ResponseBody
@GetMapping(value = "findById/{id}")
public Student findById(@PathVariable("id") Integer id) {
return studentService.findById(id);
}
}
到此，Spring、SpringMvc及MyBatis整合就结束了。
项目地址 ：https://github.com/wengzi/spring-mybatis