springMVC4.x+spring4+Mybatis3整合
文章目录
- 1.各框架在整合过程中的作用
- 整合步骤
- 第一步：导入jar包(springmvc4.x、spring4.x、mybatis3、整合的jar)
- 创建文件结构
- 导入jar包
- 第二步：书写配置文件springmvc.xml、applicationContext.xml、web.xml、mybatis
- springmvc.xml
- applicationContext.xml
- web.xml
- mybatis
- 第三步：启动框架测试
- jsp
- controller层
- service层
- mapper层
- entity
- 事务
- controller层
- service层
- entity
- mapper
- 1553424350566|4|statement|connection 1|UPDATE account SET money=money+? WHERE bankNo=?|UPDATE account SET money=money+-200 WHERE bankNo='110'
- 1553424350575|8|rollback|connection 1||
1.各框架在整合过程中的作用
整合步骤
第一步：导入jar包(springmvc4.x、spring4.x、mybatis3、整合的jar)
创建文件结构
导入jar包
第二步：书写配置文件springmvc.xml、applicationContext.xml、web.xml、mybatis
springmvc.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-4.2.xsd">
<context:component-scan base-package="cn.java.controller.*"/>
<mvc:annotation-driven/>
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/pages/">property>
<property name="suffix" value="">property>
bean>
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8">property>
<property name="maxUploadSize" value="1048576">property>
bean>
beans>
applicationContext.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
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-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.2.xsd">
<context:component-scan base-package="cn.java.service.impl"/>
<bean id="propertyPlaceholderConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:database.properties">property>
bean>
<bean id="basicDataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${driver}"/>
<property name="url" value="${url}"/>
<property name="username" value="${username}"/>
<property name="password" value="${password}"/>
bean>
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="basicDataSource">property>
<property name="mapperLocations" value="classpath*:cn/java/mapper/*.xml">property>
bean>
<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="cn.java.mapper">property>
bean>
beans>
web.xml
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>ssmdisplay-name>
<welcome-file-list>
<welcome-file>index.jspwelcome-file>
welcome-file-list>
<filter>
<filter-name>characterEncodingFilterfilter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
<init-param>
<param-name>encodingparam-name>
<param-value>utf-8param-value>
init-param>
filter>
<filter-mapping>
<filter-name>characterEncodingFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<context-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:applicationContext.xmlparam-value>
context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
listener>
<servlet>
<servlet-name>dispatcherServletservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:springmvc.xmlparam-value>
init-param>
<load-on-startup>1load-on-startup>
servlet>
<servlet-mapping>
<servlet-name>dispatcherServletservlet-name>
<url-pattern>*.shtmlurl-pattern>
servlet-mapping>
<error-page>
<error-code>404error-code>
<location>/pages/error/404.jsplocation>
error-page>
web-app>
mybatis
目前没用到，用到再配
第三步：启动框架测试
新建index.jsp能启动不报错基本就算搭建成功了
jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<html>
<head>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>首页title>
<script type="text/javascript" src="jquery-3.3.1.js">script>
<script type="text/javascript">
script>
head>
<body>
<h1>HELLO WORLDh1>
<form action="<%=basePath%>/getPersonById.shtml">
<input type="text" name="id" >
<input type="submit" value="提交">
form>
body>
html>
接下来写一个查询测试框架。
controller层
package cn.java.controller.front;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import cn.java.entity.Person;
import cn.java.entity.QQ;
import cn.java.service.PersonService;
/**
* @Description: TODO
* @Title: FrontController.java
* @author: Matthew
* @date: 2019年3月20日 下午8:19:22
* @version V1.0
*/
@Controller
@RequestMapping(value = "/front/")
public class FrontController {
@Autowired
private PersonService ps;
@RequestMapping("getPersonById")
@ResponseBody
public Person getPersonById(Long id){
return ps.selectByPrimaryKey(id);
}
}
service层
package cn.java.service;
import cn.java.entity.Person;
public interface PersonService {
int deleteByPrimaryKey(Long id);
int insert(Person record);
int insertSelective(Person record);
Person selectByPrimaryKey(Long id);
int updateByPrimaryKeySelective(Person record);
int updateByPrimaryKey(Person record);
int zhuanMoney(String bankNo1, String bankNo2, Integer money);
}
package cn.java.service.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import cn.java.entity.Person;
import cn.java.mapper.AccountMapper;
import cn.java.mapper.PersonMapper;
import cn.java.service.PersonService;
/**
* @Description: TODO
* @Title: PersonServiceImpl.java
* @author: Matthew
* @date: 2019年3月20日 下午8:14:06
* @version V1.0
*/
@Service
public class PersonServiceImpl implements PersonService {
@Autowired
private PersonMapper pm;
@Autowired
private AccountMapper am;
@Override
public int deleteByPrimaryKey(Long id) {
return 0;
}
@Override
public int insert(Person record) {
return 0;
}
@Override
public int insertSelective(Person record) {
return 0;
}
/**
* 根据指定id查询用户
*/
@Override
public Person selectByPrimaryKey(Long id) {
return pm.selectByPrimaryKey(id);
}
@Override
public int updateByPrimaryKeySelective(Person record) {
return 0;
}
@Override
public int updateByPrimaryKey(Person record) {
return 0;
}
@Transactional(readOnly = false, rollbackFor = Exception.class)//使方法具有事务性
@Override
public int zhuanMoney(String bankNo1, String bankNo2, Integer money){
//1.给宝强-200万
System.out.println("hahahah");
int result1 = am.updateMoney(-money, bankNo1);
// result1 = 1/0;
if (result1 >= 1) {
//2.给马荣+200万
result1 = am.updateMoney(money, bankNo2);
}
return result1;
}
}
mapper层
entity
package cn.java.entity;
public class Person {
private Long id;
private String username;
private String idcard;
private String gender;
private String address;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getIdcard() {
return idcard;
}
public void setIdcard(String idcard) {
this.idcard = idcard;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}
package cn.java.mapper;
import cn.java.entity.Person;
public interface PersonMapper {
int deleteByPrimaryKey(Long id);
int insert(Person record);
int insertSelective(Person record);
Person selectByPrimaryKey(Long id);
int updateByPrimaryKeySelective(Person record);
int updateByPrimaryKey(Person record);
}
<mapper namespace="cn.java.mapper.PersonMapper">
<resultMap id="BaseResultMap" type="cn.java.entity.Person">
<id column="id" property="id" jdbcType="BIGINT" />
<result column="username" property="username" jdbcType="VARCHAR" />
<result column="idcard" property="idcard" jdbcType="VARCHAR" />
<result column="gender" property="gender" jdbcType="VARCHAR" />
<result column="address" property="address" jdbcType="VARCHAR" />
resultMap>
<sql id="Base_Column_List">
id, username, idcard, gender, address
sql>
<select id="selectByPrimaryKey" resultMap="BaseResultMap"
parameterType="java.lang.Long">
select
<include refid="Base_Column_List" />
from persons
where id = #{id,jdbcType=BIGINT}
select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from persons
where id = #{id,jdbcType=BIGINT}
delete>
<insert id="insert" parameterType="cn.java.entity.Person">
insert into persons (id, username, idcard,
gender, address)
values (#{id,jdbcType=BIGINT}, #{username,jdbcType=VARCHAR},
#{idcard,jdbcType=VARCHAR},
#{gender,jdbcType=VARCHAR}, #{address,jdbcType=VARCHAR})
insert>
<insert id="insertSelective" parameterType="cn.java.entity.Person">
insert into persons
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="id != null">
id,
if>
<if test="username != null">
username,
if>
<if test="idcard != null">
idcard,
if>
<if test="gender != null">
gender,
if>
<if test="address != null">
address,
if>
trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="id != null">
#{id,jdbcType=BIGINT},
if>
<if test="username != null">
#{username,jdbcType=VARCHAR},
if>
<if test="idcard != null">
#{idcard,jdbcType=VARCHAR},
if>
<if test="gender != null">
#{gender,jdbcType=VARCHAR},
if>
<if test="address != null">
#{address,jdbcType=VARCHAR},
if>
trim>
insert>
<update id="updateByPrimaryKeySelective" parameterType="cn.java.entity.Person">
update persons
<set>
<if test="username != null">
username = #{username,jdbcType=VARCHAR},
if>
<if test="idcard != null">
idcard = #{idcard,jdbcType=VARCHAR},
if>
<if test="gender != null">
gender = #{gender,jdbcType=VARCHAR},
if>
<if test="address != null">
address = #{address,jdbcType=VARCHAR},
if>
set>
where id = #{id,jdbcType=BIGINT}
update>
<update id="updateByPrimaryKey" parameterType="cn.java.entity.Person">
update persons
set username = #{username,jdbcType=VARCHAR},
idcard = #{idcard,jdbcType=VARCHAR},
gender = #{gender,jdbcType=VARCHAR},
address = #{address,jdbcType=VARCHAR}
where id = #{id,jdbcType=BIGINT}
update>
mapper>
事务
王宝强给马荣转200w，如果正在王宝强扣完钱后系统出错，王宝强的钱应该回滚
controller层
@RequestMapping("zhuanMoney")
@ResponseBody
public Integer zhuanMoney(String bankNo1, String bankNo2, Integer money){
return ps.zhuanMoney(bankNo1, bankNo2, money);
}
service层
@Transactional(readOnly = false, rollbackFor = Exception.class)//使方法具有事务性
@Override
public int zhuanMoney(String bankNo1, String bankNo2, Integer money){
//1.给宝强-200万
System.out.println("hahahah");
int result1 = am.updateMoney(-money, bankNo1);
result1 = 1/0;
if (result1 >= 1) {
//2.给马荣+200万
result1 = am.updateMoney(money, bankNo2);
}
return result1;
}
entity
package cn.java.entity;
public class Account {
private Long id;
private String bankno;
private String username;
private Integer money;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getBankno() {
return bankno;
}
public void setBankno(String bankno) {
this.bankno = bankno;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public Integer getMoney() {
return money;
}
public void setMoney(Integer money) {
this.money = money;
}
}
mapper
package cn.java.mapper;
import cn.java.entity.Account;
public interface AccountMapper {
int deleteByPrimaryKey(Long id);
int insert(Account record);
int insertSelective(Account record);
Account selectByPrimaryKey(Long id);
int updateByPrimaryKeySelective(Account record);
int updateByPrimaryKey(Account record);
// 转账
int updateMoney(Integer money, String bankNo);
}
<mapper namespace="cn.java.mapper.AccountMapper" >
<resultMap id="BaseResultMap" type="cn.java.entity.Account" >
<id column="id" property="id" jdbcType="BIGINT" />
<result column="bankNo" property="bankno" jdbcType="VARCHAR" />
<result column="username" property="username" jdbcType="VARCHAR" />
<result column="money" property="money" jdbcType="INTEGER" />
resultMap>
<sql id="Base_Column_List" >
id, bankNo, username, money
sql>
<select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Long" >
select
<include refid="Base_Column_List" />
from account
where id = #{id,jdbcType=BIGINT}
select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long" >
delete from account
where id = #{id,jdbcType=BIGINT}
delete>
<insert id="insert" parameterType="cn.java.entity.Account" >
insert into account (id, bankNo, username,
money)
values (#{id,jdbcType=BIGINT}, #{bankno,jdbcType=VARCHAR}, #{username,jdbcType=VARCHAR},
#{money,jdbcType=INTEGER})
insert>
<insert id="insertSelective" parameterType="cn.java.entity.Account" >
insert into account
<trim prefix="(" suffix=")" suffixOverrides="," >
<if test="id != null" >
id,
if>
<if test="bankno != null" >
bankNo,
if>
<if test="username != null" >
username,
if>
<if test="money != null" >
money,
if>
trim>
<trim prefix="values (" suffix=")" suffixOverrides="," >
<if test="id != null" >
#{id,jdbcType=BIGINT},
if>
<if test="bankno != null" >
#{bankno,jdbcType=VARCHAR},
if>
<if test="username != null" >
#{username,jdbcType=VARCHAR},
if>
<if test="money != null" >
#{money,jdbcType=INTEGER},
if>
trim>
insert>
<update id="updateByPrimaryKeySelective" parameterType="cn.java.entity.Account" >
update account
<set >
<if test="bankno != null" >
bankNo = #{bankno,jdbcType=VARCHAR},
if>
<if test="username != null" >
username = #{username,jdbcType=VARCHAR},
if>
<if test="money != null" >
money = #{money,jdbcType=INTEGER},
if>
set>
where id = #{id,jdbcType=BIGINT}
update>
<update id="updateByPrimaryKey" parameterType="cn.java.entity.Account" >
update account
set bankNo = #{bankno,jdbcType=VARCHAR},
username = #{username,jdbcType=VARCHAR},
money = #{money,jdbcType=INTEGER}
where id = #{id,jdbcType=BIGINT}
update>
<update id="updateMoney">
UPDATE account SET money=money+#{0} WHERE bankNo=#{1}
update>
mapper>
hahahah
2019-03-24 18:45:50,516 org.apache.ibatis.logging.slf4j.Slf4jLoggerImpl.debug(Slf4jLoggerImpl.java:54) Creating a new SqlSession
2019-03-24 18:45:50,521 org.apache.ibatis.logging.slf4j.Slf4jLoggerImpl.debug(Slf4jLoggerImpl.java:54) Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@7cf214f7]
2019-03-24 18:45:50,529 org.apache.ibatis.logging.slf4j.Slf4jLoggerImpl.debug(Slf4jLoggerImpl.java:54) JDBC Connection [jdbc:mysql://localhost:3306/dt48?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT, UserName=root@localhost, MySQL Connector/J] will be managed by Spring
2019-03-24 18:45:50,530 org.apache.ibatis.logging.slf4j.Slf4jLoggerImpl.debug(Slf4jLoggerImpl.java:54) ==> Preparing: UPDATE account SET money=money+? WHERE bankNo=?
2019-03-24 18:45:50,561 org.apache.ibatis.logging.slf4j.Slf4jLoggerImpl.debug(Slf4jLoggerImpl.java:54) ==> Parameters: -200(Integer), 110(String)
1553424350566|4|statement|connection 1|UPDATE account SET money=money+? WHERE bankNo=?|UPDATE account SET money=money±200 WHERE bankNo=‘110’
2019-03-24 18:45:50,566 org.apache.ibatis.logging.slf4j.Slf4jLoggerImpl.debug(Slf4jLoggerImpl.java:54) <== Updates: 1
2019-03-24 18:45:50,566 org.apache.ibatis.logging.slf4j.Slf4jLoggerImpl.debug(Slf4jLoggerImpl.java:54) Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@7cf214f7]
2019-03-24 18:45:50,566 org.apache.ibatis.logging.slf4j.Slf4jLoggerImpl.debug(Slf4jLoggerImpl.java:54) Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@7cf214f7]
2019-03-24 18:45:50,567 org.apache.ibatis.logging.slf4j.Slf4jLoggerImpl.debug(Slf4jLoggerImpl.java:54) Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@7cf214f7]
2019-03-24 18:45:50,567 org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java:851) Initiating transaction rollback
2019-03-24 18:45:50,567 org.springframework.jdbc.datasource.DataSourceTransactionManager.doRollback(DataSourceTransactionManager.java:284) Rolling back JDBC transaction on Connection [jdbc:mysql://localhost:3306/dt48?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT, UserName=root@localhost, MySQL Connector/J]
1553424350575|8|rollback|connection 1||
java.lang.ArithmeticException: / by zero
我们这里用到的注解就是
@Transactional(readOnly = false, rollbackFor = Exception.class)
readOnly默认就是false可以省略，rollbackFor 后面跟的是遇到什么异常回滚
要使用这个注解需要在applicationContext.xml里配置
<bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="basicDataSource">property>
bean>
<tx:annotation-driven transaction-manager="dataSourceTransactionManager" proxy-target-class="true"/>