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Small example of SSM project, detailed tutorial of SSM integration
2022-06-26 10:14:00 【Study diary】
SSM Project small example
Today, let's build a SSM The small example of the project is simple , The project template is still our template , Is that we are JavaWeb The last small example , Then SSM How do we achieve , Let's see later springboot How to realize
javaweb Project example in ：https://blog.csdn.net/hello_list/article/details/124734814
First of all, let's build one SSM project , It's also SSM Project integration ！
web Project creation
Environmental Science ：idea2019 、maven、jdk1.8
Create a maven project , direct next
Now it is not a web project
Item right click , Choose this
We put web On the hook
This is a standard web Project , Compared with maven I think the self built one looks good , Ordinary maven The project looks the most pleasing to the eye
The project will be created , We run , Before running, let's put login.jsp page , I found a page on the Internet ：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Login</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">
<style> .loginForm {
/* Frame height */ height: 350px; /* Border width */ width: 500px; /* Border color */ border: #4d4d4d solid 1px; /* Border fillet */ border-radius: 4px; /* shadow horizontal direction , In the vertical direction , A fuzzy distance */ box-shadow: 5px 5px 5px #4d4d4d; /* Upper boundary distance */ margin-top: 300px; /* Left boundary distance ： Automatically */ margin-left: auto; /* Right border distance ： Automatically */ margin-right: auto; /* user name 、 Password spacing */ padding: 20px 40px; } /* Put the user login in the middle */ .loginForm h2 {
text-align: center; } /* modify button attribute */ .button {
text-align: center; vertical-align: middle; } </style>
</head>
<body>
<div class="loginForm">
<h2> The user login </h2>
<form>
<div class="form-group">
<label for="exampleInputEmail1"> user name </label>
<input type="email" class="form-control" id="exampleInputEmail1" placeholder=" Please enter a user name ">
</div>
<div class="form-group">
<label for="exampleInputPassword1"> password </label>
<input type="password" class="form-control" id="exampleInputPassword1" placeholder=" Please input a password ">
</div>
<div class="checkbox">
<label>
<input type="checkbox"> agree!
<a href="#"> xxx Security protocols </a> And <a href="#"> xxx Privacy agreement </a>
</label>
</div>
<div class="button">
<input type="submit" class="btn btn-primary" value=" deng record "/>
</div>
</form>
</div>
</body>
</html>
Package run project , Hand to hand ,
If not packed , Pack your own bag , Do we see lib Catalog , The dependencies of our projects will not necessarily be added , Now there is no dependency , We may need to build one later , May be you idea Dissimilarity , Depending on the situation
Add our project
OK, Successful launch
Now let's start SSM Integrate , Then start writing examples
SSM Integrate
Everything begins with adding dependencies ：
<dependencies>
<!--Junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!-- Database driven -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!-- Database connection pool -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!--Servlet - JSP -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--Mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.2</version>
</dependency>
<!--Spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
</dependencies>
Be sure to check that your dependencies have been added
Add one maven The filter
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
First we build spring frame ：
General profile 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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
</beans>
We first spring Integrate mybatis
database.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/huanying?useSSL=false&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=
mybatis Configuration file for ：mybatis-config.xml
<?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>
<package name="com.xxx.pojo"/>
</typeAliases>
<mappers>
<package name="com.xxx.dao.mapper"/>
</mappers>
</configuration>
And then through spring Take over ：spring-dao
<?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 https://www.springframework.org/schema/context/spring-context.xsd">
<!-- Configuration integration mybatis -->
<!-- 1. Associate database file -->
<context:property-placeholder location="classpath:database.properties"/>
<!-- 2. Database connection pool -->
<!-- Database connection pool dbcp Semi automatic operation Can't automatically connect c3p0 Automation （ Automatically load the configuration file And set it in the object ） -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!-- Configure connection pool properties -->
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- c3p0 Private properties of connection pool -->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!-- Do not automatically close the connection commit -->
<property name="autoCommitOnClose" value="false"/>
<!-- Get connection timeout -->
<property name="checkoutTimeout" value="10000"/>
<!-- Number of retries when get connection failed -->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!-- 3. To configure SqlSessionFactory object -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- Inject the database connection pool -->
<property name="dataSource" ref="dataSource"/>
<!-- To configure MyBaties Global profile :mybatis-config.xml -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!-- 4. Configure scan Dao Interface package , Dynamic implementation Dao Interface injection to spring In the container -->
<!-- explain ：https://www.cnblogs.com/jpfss/p/7799806.html-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- Inject sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- Give need to scan Dao Interface package -->
<property name="basePackage" value="com.xuerxiriji.dao"/>
</bean>
</beans>
Let's just put service The next layer is finished ：spring-service.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" 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">
<!-- scanning service dependent bean -->
<context:component-scan base-package="com.xuexiriji.service" />
<!-- Configure transaction manager -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- Inject the database connection pool -->
<property name="dataSource" ref="dataSource" />
</bean>
</beans>
OK, Next we integrate springMVC
web.xml
<?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">
<!--DispatcherServlet-->
<servlet>
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!-- Be sure to pay attention to : What we're loading here is the general configuration file , Before I was trapped here ！-->
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--encodingFilter-->
<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>
<!--Session Expiration time -->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</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/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 https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- To configure SpringMVC -->
<!-- 1. Turn on SpringMVC Annotation driven -->
<mvc:annotation-driven />
<!-- 2. Static resource default servlet To configure -->
<mvc:default-servlet-handler/>
<!-- 3. To configure jsp Show ViewResolver view resolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 4. scanning web dependent bean -->
<!-- Actually, a scan like this , We can completely configure a general directness com.xuexiriji But since we want to stay mybatis and service and controller The sense of hierarchy is like this -->
<context:component-scan base-package="com.xuexiriji.controller" />
</beans>
Finally, it was put on us applicationContext.xml In total configuration
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<import resource="spring-dao.xml"/>
<import resource="spring-service.xml"/>
<import resource="spring-mvc.xml"/>
</beans>
We can see , Configured file idea Will automatically identify spring Small leaf
Wrote so many configuration files , The project has been set up , But I haven't written the code yet , Let's try a watch CRUD
Table structure , No mistake, we are javaweb Medium Good Cargo list
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for good
-- ----------------------------
DROP TABLE IF EXISTS `good`;
CREATE TABLE `good` (
`goodid` int(20) NOT NULL AUTO_INCREMENT,
`goodname` varchar(20) NOT NULL,
`surplus` int(20) NOT NULL,
`goodprice` int(20) NOT NULL,
PRIMARY KEY (`goodid`)
) ENGINE=InnoDB AUTO_INCREMENT=24 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of good
-- ----------------------------
INSERT INTO `good` VALUES ('1', ' Black forest ', '2', '15');
INSERT INTO `good` VALUES ('2', ' Cream cake ', '3', '13');
INSERT INTO `good` VALUES ('3', ' The fruit cake ', '2', '11');
INSERT INTO `good` VALUES ('4', ' Ice cream cake ', '5', '13');
INSERT INTO `good` VALUES ('9', ' Milk cake ', '34', '9');
INSERT INTO `good` VALUES ('11', ' Dried meat floss cake ', '13', '13');
INSERT INTO `good` VALUES ('12', ' Strawberry cake ', '99', '23');
INSERT INTO `good` VALUES ('13', ' Apple cake ', '32', '12');
INSERT INTO `good` VALUES ('14', ' Banana Cake ', '32', '12');
INSERT INTO `good` VALUES ('15', ' Pitaya cake ', '43', '43');
INSERT INTO `good` VALUES ('16', ' Orange cake ', '65', '31');
INSERT INTO `good` VALUES ('17', ' Apple ', '43', '54');
INSERT INTO `good` VALUES ('18', ' Pineapple ', '32', '32');
INSERT INTO `good` VALUES ('19', ' The oranges ', '435', '32');
INSERT INTO `good` VALUES ('20', ' Sichuan Pepper ', '43', '65');
INSERT INTO `good` VALUES ('21', ' garlic ', '23', '54');
INSERT INTO `good` VALUES ('22', ' egg ', '32', '43');
INSERT INTO `good` VALUES ('23', ' tomatoes ', '32', '43');
And that is javaweb Display page in , Because it's all jsp So it's all the same , So no change
We put index.jsp Change to our one
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="zh">
<head>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
<title> Study diary </title>
</head>
<body>
<!-- Main content of the page -->
<main class="ftdms-layout-content">
<div style="margin-bottom: 90px;">
<div class="row" style="margin-top: 15px;">
<div class="col-lg-12">
<div class="card">
<div class="card-toolbar clearfix">
<form class="pull-right search-bar" method="post" action="GoodGetSearchServlet" role="form">
<div class="input-group">
<input type="hidden" name="search_field" id="search-field"
value="title">
<input type="text" class="form-control col-lg-4" value="${keyword }" name="keyword" placeholder=" Please enter name "/>
<div class="input-group-btn">
<button class="btn btn-default dropdown-toggle" id="search-btn" type="submit">
Search for
<!--<span class="caret"></span>-->
</button>
</div>
<!-- <ul class="dropdown-menu">
<li> <a tabindex="-1" href="javascript:void(0)" data-field="title"> title </a> </li>
<li> <a tabindex="-1" href="javascript:void(0)" data-field="cat_name"> The column </a> </li>
</ul>
-->
</div>
</form>
<div class="toolbar-btn-action">
<a class="btn btn-primary m-r-5 submenuitem"
href="goodinsert.jsp" data-id="link552" data-index="552">
newly added </a>
</div>
</div>
<div class="card-body">
<div class="table-responsive">
<table class="table table-bordered">
<thead>
<tr>
<th width="5"><label
class="ftdms-checkbox checkbox-primary"> <input
type="checkbox" id="check-all"><span></span>
</label></th>
<th> Cargo number </th>
<th> Name of goods </th>
<th> The remaining quantity </th>
<th> Price of goods </th>
<th> operation </th>
</tr>
</thead>
<tbody>
<c:forEach items="${goods}" var="good">
<tr>
<td>${good.goodId}</td>
<td>${good.goodName}</td>
<td>${good.surplus}</td>
<td>${good.goodPrice}</td>
<td><font class="text-success"> normal </font></td>
<td>
<div class="btn-group">
<div class="toolbar-btn-action">
<a class="btn btn-success m-r-5 submenuitem" href="GoodGetByIdServlet?goodid=${good.goodId}" data-id="link553" data-index="553"><i class="ftsucai-edit-2"> edit </i></a>
<a class="btn btn-warning m-r-5 submenuitem" href="GoodDeleteByIdServlet?goodId=${good.goodId}" data-id="link554" data-index="554"><i class="ftsucai-edit-2"> Delete </i></a>
</div>
</div>
</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
<ul class="pagination">
<li class="disabled"><span>«</span></li>
<li class="active"><span>1</span></li>
<li><a class="submenuitem" href="pages_data.html#2">2</a></li>
<li><a href="#3">3</a></li>
<li><a href="#4">4</a></li>
<li><a href="#5">5</a></li>
<li><a href="#1">6</a></li>
<li><a href="#1">7</a></li>
<li><a href="#1">8</a></li>
<li class="disabled"><span>...</span></li>
<li><a href="#">14452</a></li>
<li><a href="#">14453</a></li>
<li><a href="#">»</a></li>
</ul>
</div>
</div>
</div>
</div>
</div>
</main>
<!--End Main content of the page -->
<!-- new Bootstrap The core CSS file -->
<link
href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css"
rel="stylesheet">
<!-- jQuery file . Be sure to bootstrap.min.js Introduced before -->
<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
<!-- Abreast of the times Bootstrap The core JavaScript file -->
<script
src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script>
$(function() {
$('.search-bar .dropdown-menu a')
.click(
function() {
var field = $(this).data('field') || '';
$('#search-field').val(field);
$('#search-btn')
.html(
$(this).text()
+ ' <span class="caret"></span>');
});
});
</script>
</body>
</html>
Step by step , Start Good.java
package com.xuexiriji.pojo;
public class Good {
private int goodId;
private String goodName;
private int surplus;
private int goodPrice;
public int getGoodId() {
return goodId;
}
public void setGoodId(int goodId) {
this.goodId = goodId;
}
public String getGoodName() {
return goodName;
}
public void setGoodName(String goodName) {
this.goodName = goodName;
}
public int getSurplus() {
return surplus;
}
public void setSurplus(int surplus) {
this.surplus = surplus;
}
public int getGoodPrice() {
return goodPrice;
}
public void setGoodPrice(int goodPrice) {
this.goodPrice = goodPrice;
}
public Good(int goodId, String goodName, int surplus, int goodPrice) {
super();
this.goodId = goodId;
this.goodName = goodName;
this.surplus = surplus;
this.goodPrice = goodPrice;
}
public Good() {
super();
}
@Override
public String toString() {
return "Good [goodId=" + goodId + ", goodName=" + goodName + ", surplus=" + surplus + ", goodPrice=" + goodPrice
+ "]";
}
}
mapper Interface ：goodDao.java
package com.xuexiriji.dao;
import com.xuexiriji.pojo.Good;
import java.util.List;
public interface GoodDao {
public List<Good> selectAllGood();
}
GoodMapper.xml
<?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="com.xuexiriji.dao.GoodDao">
<select id="selectAllGood" resultType="Good">
select * from good
</select>
</mapper>
service Here I will not face the interface ：GoodService
@Service
public class GoodService {
@Autowired
GoodDao GoodDao;
public List<Good> selectAllGood(){
return GoodDao.selectAllGood();
}
}
Here we look at , As long as it is spring All the pipes have small leaves , And click to jump over , If you don't jump over , That's not taking over , Projects don't have to run , You can find the mistake
GoodController
@Controller
public class GoodController {
@Autowired
GoodService goodService;
@RequestMapping("/selectAllGood")
public String selectAllGood(Model model){
List<Good> goods = goodService.selectAllGood();
model.addAttribute("goods",goods);
return "index";
}
}
Let's go to the login page later , Login page form plus request path 
Launch our project , There is no test in writing so much , harm , I hope not to make a lot of mistakes , No error is reported to start successfully ：
As expected, I must report an error , Say there is no such class , Actually, seeing me, I thought , Remember to start before web Did you say it during the project ,lib Dependency may not be added , So we have to pack again
So these bags have
Restart , Ook , Successful startup
Click login , Report errors ：
This must be our mapper There is a problem with the interface , Take a look at our configuration , It should be , Because this time our class name has not been , Then don't change , Add one mapper.xml Just remember to register here
Ok, Test done
It's OK , I'm almost , This is my third time , Integrate this , In fact, the first integration , The second time is copy and paste , This is almost the first time to replicate , So a project that you have integrated yourself , Keep it , Maybe this is the base of your later projects .
Summary
Here we are going to give you a small example of integration , Let's integrate it here today , We'll do it later , See here , Don't you like it , It's OK to pay attention ,bye~
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