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SSM project construction
2022-06-23 06:02:00 【php_ kevlin】
Editor :idea（ The configuration has been downloaded maven and tomcat）
The idea of integration
- .1. First, build an integrated environment
- .2. The first Spring The configuration of is completed
- .3. Reuse Spring Integrate SpringMVC frame
- .4. Finally using Spring Integrate MyBatis frame
1. To configure maven
2. New projects 
3. Import dependency package , File is pom.xml ( The editor will prompt )
<?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>org.example</groupId>
<artifactId>springmvc01</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<!-- spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.6.RELEASE</version>
</dependency>
<!-- jstl -->
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>jstl-impl</artifactId>
<version>1.2</version>
</dependency>
<!-- servlet Compile environment -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- jsp Compile environment -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<!-- FastJson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.54</version>
</dependency>
<!-- pagehelper Pagination -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.2</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.1.16.RELEASE</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.1.16.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.1.16.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.16.RELEASE</version>
</dependency>
<!-- spring Integrate mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- MyBatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency>
<!-- mysql Driving dependency -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<!-- Connection pool -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.12</version>
</dependency>
<!-- Junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!-- log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<!-- <include>*.xml</include>-->
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
</project>
4. The essence is tomcat The directory where the web site runs , So create the following directory 
among ,web.xml The contents are as follows ：
<?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">
<!-- SpringMVC Front controller 1. front end ： Accept all requests 2. start-up springMVC factory mvc.xml 3.springmvc Process scheduling -->
<servlet>
<servlet-name>my_shine</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:mvc.xml</param-value>
</init-param>
<!-- Lazy loading Hungry loading Optional -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>my_shine</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- solve post Request Chinese garbled code filter -->
<!-- At this time, the filter will ：request.setCharactorEncoding("utf-8"); -->
<filter>
<filter-name>encoding</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>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- start-up spring -->
<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>
</web-app>
5. stay web.xml We'll quote springmvc Configuration file for mvc.xml and spring Configuration file for applicationContext.xml, The contents are as follows ：
<!--suppress ALL -->
<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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- Annotation scan scanning controller Annotations , No other scanning -->
<context:component-scan base-package="com.qf" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- Annotation driven -->
<mvc:annotation-driven>
<!-- install FastJson, converter -->
<mvc:message-converters>
<bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
<!-- Declare conversion type :json -->
<property name="supportedMediaTypes">
<list>
<value>application/json</value>
</list>
</property>
<property name="features">
<array value-type="com.alibaba.fastjson.serializer.SerializerFeature">
<!-- Avoid circular references -->
<value>DisableCircularReferenceDetect</value>
<!-- Whether the output value is null Field of -->
<value>WriteMapNullValue</value>
<!-- <value>QuoteFieldNames</value>-->
<!-- If the value field is null, Output is 0, Instead of null -->
<!-- <value>WriteNullNumberAsZero</value>-->
<!-- If the character type field is null, Output is "", Instead of null -->
<value>WriteNullStringAsEmpty</value>
<!-- List If the field is null, Output is [], Instead of null -->
<value>WriteNullListAsEmpty</value>
<!-- Boolean If the field is null, Output is false, Instead of null -->
<!-- <value>WriteNullBooleanAsFalse</value>-->
</array>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!-- view resolver effect ：1. Capture the return value of the back-end controller =“hello” 2. analysis ： Before and after the return value Splicing ==> "hello.jsp" -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- Prefix -->
<property name="prefix" value="/"></property>
<!-- suffix -->
<property name="suffix" value=".jsp"></property>
</bean>
<mvc:default-servlet-handler />
</beans>
6. In the last step ,mvc.xml scanning controller Annotations , stay controller Set the route and controller correspondence in , newly build ·userControlller.java·, The table of contents is shown in the figure below ：
userController.java The contents are as follows ：
package com.qf.web;
import com.github.pagehelper.PageInfo;
import com.qf.bean.BaseResultBean;
import com.qf.entiry.User;
import com.qf.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import java.text.SimpleDateFormat;
import java.util.List;
@Controller // Declare the back-end controller
public class UserController {
@Autowired
@Qualifier("userServiceImpl")
private UserService userService;
@GetMapping("/userlist")
public ModelAndView queryUsers(HttpServletRequest request){
//service doGet doPost
int page = Integer.parseInt(request.getParameter("page"));
int size = Integer.parseInt(request.getParameter("size"));
List<User> userlists = userService.queryUsers(page,size);
PageInfo<User> pageInfo = new PageInfo<User>(userlists);
System.out.println("queryUsers"+userlists);
System.out.println("pageInfo"+pageInfo);
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("users",userlists
);
modelAndView.setViewName("user");
//
return modelAndView;
}
@RequestMapping("/user")
@ResponseBody
public Object queryOne(Integer id)
{
System.out.println("query user id:"+id);
List<User> user = userService.queryOne(id);
System.out.println(user);
return user;
}
@PostMapping("/update")
public BaseResultBean updateUser(User user)
{
System.out.println("update user" + user);
userService.updateUser(user);
BaseResultBean baseResultBean = new BaseResultBean();
baseResultBean.setStatus(true);
baseResultBean.setMessage(" success ");
return baseResultBean;
}
@RequestMapping("/add")
public BaseResultBean addUser(User user)
{
System.out.println("add user" + user);
userService.insertUser(user);
BaseResultBean baseResultBean = new BaseResultBean();
baseResultBean.setStatus(true);
baseResultBean.setMessage(" success ");
return baseResultBean;
}
@RequestMapping("/deleteuser/{id}")
public BaseResultBean deleteUser(@PathVariable Integer id)
{
System.out.println("delete user" + id);
userService.deleteUser(id);
BaseResultBean baseResultBean = new BaseResultBean();
baseResultBean.setStatus(true);
baseResultBean.setMessage(" success ");
return baseResultBean;
}
}
7. In step five spring Configuration file for applicationContext.xml As shown below
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- Datasource -->
<context:property-placeholder location="classpath:jdbc.properties" />
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init">
<property name="driverClassName" value="${jdbc.driverClass}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- Configure the timeout time for getting connection waiting -->
<property name="maxWait" value="60000"/>
<!-- To configure a Minimum lifetime of a connection in the pool -->
<property name="minEvictableIdleTimeMillis" value="300000" />
</bean>
<!-- SqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- Inject the database connection pool -->
<property name="dataSource" ref="dataSource"></property>
<!-- Inject dao-mapper file information , If mapping files and dao Interface Same package and same name , This configuration can be ignored -->
<property name="mapperLocations">
<list>
<value>classpath:com/qf/dao/*.xml</value>
</list>
</property>
<!-- Automatic scanning mybatis The configuration file , Print sql journal -->
<property name="configLocation" value="classpath:sqlLog.xml"></property>
<!-- scanning entity package Use the alias by dao-mapper Entities in the file Define the default package path Such as ：<select id="queryAll" resultType="User"> in User Classes may not define packages -->
<property name="typeAliasesPackage" value="com.qf.entiry"></property>
<!-- Pagination -->
<property name="plugins">
<array>
<bean class="com.github.pagehelper.PageInterceptor">
<property name="properties">
<props>
<!-- Set page number , Adjust to a reasonable value 100 page -->
<prop key="reasonable">true</prop>
</props>
</property>
</bean>
</array>
</property>
</bean>
<!-- Configure scan Dao Interface package , Dynamic implementation Dao Interface , Injection into ioc In the container -->
<!-- DAO MapperScannerConfigurer -->
<bean id="mapperScannerConfigurer9" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- dao The package where the interface is located If there are more than one bag It can also be separated by commas or semicolons -->
<property name="basePackage" value="com.qf.dao"></property>
<!-- If there is only one factory SqlSessionFactory Of bean, This configuration can be ignored -->
<!-- <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>-->
</bean>
<!-- Read annotation position All classes should be scanned , however controller Class not scanned -->
<context:component-scan base-package="com.qf" use-default-filters="true">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- Introduce a transaction manager , It depends on DataSource, To get a connection , Then control the transaction logic -->
<bean id="tx" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- @Transactional -->
<tx:annotation-driven transaction-manager="tx" />
</beans>
The road is far , Yes, it will be
8.spring.xml Will read dao layer ,service layer The following notes , The contents are as follows ：
Don't know how , I can't write …
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