SpringMVC学习笔记（三）

2019-11-08 02:45:00

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SPRingMVC学习笔记（三）

SSI框架的整合及优化

个人笔记，如有错误，恳请批评指正。

ssi整合

创建项目

新建项目后规划好各层的包。

导入包

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整合spring与mybatis

调整spring与mybatis配置文件

创建、编写配置文件：

myBatis-config.xml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></configuration>

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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd">  <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="com.MySQL.jdbc.Driver" /> <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=UTF-8" /> <property name="user" value="root" /> <property name="passWord" value="root" /> </bean>  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:myBatis-config.xml" /> </bean>  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean>  <tx:advice id="advice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="insert*" propagation="REQUIRED" rollback-for="Exception"/> <tx:method name="update*" propagation="REQUIRED" rollback-for="Exception"/> <tx:method name="delete*" propagation="REQUIRED" rollback-for="Exception"/> <tx:method name="*" propagation="SUPPORTS"/> </tx:attributes> </tx:advice>  <aop:config> <aop:advisor advice-ref="advice" pointcut="execution(* cn.ustb.scm.dao.impl.*.*(..))"/> </aop:config>  <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"/> </bean> <context:component-scan base-package="*"/></beans>

web.xml配置

<?xml version="1.0" encoding="UTF-8"?><web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <display-name></display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <servlet> <servlet-name>mvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>mvc</servlet-name> <url-pattern>*.action</url-pattern> </servlet-mapping> <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></web-app>

编写实体及sql映射文件

如没有建库表，先建库表,可参考如下sql:

drop database if exists mybatis;create database mybatis CHARACTER SET UTF8;use mybatis;create table dept( dept_id int primary key auto_increment, dept_name varchar(50), dept_address varchar(50));insert into dept(dept_name,dept_address) values('研发部一部','广州');insert into dept(dept_name,dept_address) values('研发部二部','广州');insert into dept(dept_name,dept_address) values('研发部三部','深圳');select * from dept;

编写实体类

public class Dept implements Serializable { private Integer deptId; private String deptName; private String deptAddress; ......}

sql映射文件，并将相关信息映射到mybatis-config.xml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.ustb.entity.DeptMapper"> <resultMap type="Dept" id="deptResultMap"> <id property="deptId" column="dept_id" /> <result property="deptName" column="dept_name" /> <result property="deptAddress" column="dept_address" /> </resultMap>  <select id="selectDept" parameterType="Integer" resultMap="deptResultMap">  select * from dept where dept_id=#{deptID} </select> <insert id="insertDept" parameterType="Dept"> insert into dept(dept_name,dept_address) values(#{deptName},#{deptAddress}); </insert></mapper>

myBatis-config.xml文件修改后为如下内容

<?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><typeAliases> <typeAlias type="cn.ustb.entity.Dept" alias="Dept" /></typeAliases> <mappers> <mapper resource="cn/ustb/entity/DeptMapper.xml" /> </mappers> </configuration>

编写Dao接口及实现

DeptDaoImpl.java@Repository("deptDao")public class DeptDaoImpl{ @Resource private SqlSessionTemplate sqlSessionTemplate; /** * 根据部门编号查询部门信息 * @param deptId 部门编号 * @return 部门信息 */ public Dept selectDept(Integer deptId){ Dept dept= sqlSessionTemplate.selectOne("cn.ustb.entity.DeptMapper.selectDept", deptId); return dept; } /** * 添加部门信息 * @param dept 部门信息 * @return 添加成功的记录数 */ public int insertDept(Dept dept){ System.out.println("------dao.dept:"+dept); return sqlSessionTemplate.insert("cn.ustb.entity.DeptMapper.insertDept", dept); }}

测试spring与mybatis整合

public class TestDeptDao { //@Resource //这里没法使用，后继版本有其它方式可以注入 static private DeptDaoImpl deptDao; @BeforeClass public static void setUpBeforeClass() throws Exception { ApplicationContext context =new ClassPathXmlApplicationContext("applicationContext.xml"); deptDao=(DeptDaoImpl) context.getBean("deptDao"); } @AfterClass public static void tearDownAfterClass() throws Exception { } @Test public void testSelectDept() { System.out.println(deptDao.selectDept(1)); } @Test public void testInsertDept() { Dept dept=new Dept(); //dept.setDeptId(117); dept.setDeptName("name117"); dept.setDeptAddress("address117"); System.out.println("受影响行数："+deptDao.insertDept(dept)); }}

整合springmvc

修改web.xml文件，加入springmvc相关信息，编写控制器类及相关jsp 文件

spring-mvc.xml

web.xml文件配置

编写控制器类

@Controller@RequestMapping(value="/dept")public class DeptAction { @Resource private DeptDaoImpl deptDao; @RequestMapping(value="/insert") public String insert(Dept dept){ System.out.println("---action.dept:"+dept); deptDao.insertDept(dept); return "forward:/jsp/main.jsp"; }}

缩写跳转页面

/jsp/main.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><html><head></head><body> this is main jsp</body></html>

测试ssi整合

缩写测试页面

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><html><head></head><body> <form action="dept/insert.action" method="post"> 名称：<input type="text" name="deptName"><br> 地址：<input type="text" name="deptAddress"><br> <input type="submit" value="ok"> </form></body></html>

优化

中文乱码

中文乱码处理，在web.xml中配置拦截器（参考前面）

<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>

添加业务层

添加业务层相关包、接口及实现

接口包：cn.ustb.service 实现类包：cn.ustb.service.impl 编写接口与实现类（实现类用@Service进行注解，dao接口结合下边的配置，通过@Autowired方式注入代理实例），略。

添加dao层接口

略

修改applicationContext.xml与spring-mvc.xml文件

添加如下内容：

<aop:config> <aop:advisor advice-ref="advice" pointcut="execution(* cn.ustb.scm.service.impl.*.*(..))"/> </aop:config> <context:component-scan base-package="cn.ustb"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan>  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactory" ref="sqlSessionFactory"/> <property name="basePackage" value="cn.ustb.scm.dao"/> </bean>

spring-mvc.xml

<context:component-scan base-package="cn.ustb"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" /> </context:component-scan>