SSM 完整搭建Web项目 1分钟快速开始
在pomxml下
1.导入依赖
<groupId>org.example</groupId>
<artifactId>Onlineauctionsystems</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<!--Junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!-- 数据库连接池 -->
<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>3.5.7</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>5.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.7.RELEASE</version>
</dependency>
<!--mvc支持ajax-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.70</version>
</dependency>
<!--log4-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>
<!--懒人实体类-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.10</version>
<scope>provided</scope>
</dependency>
</dependencies>
2 静态资源过滤
<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>
确保你的包都添加进来了
绑定数据库
选择您使用的数据库,我这里使用的是mysql5.7版本的
添加Web项目,选择4.0版本
搭建三层
配置resources下的xml
applicationContext.xml
不需要改
<?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>
database.properties
把数据库信息改成自己的
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/smbms?useUnicode=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=123456
log4j.properties
### 设置Logger输出级别和输出目的地 ###
log4j.rootLogger=debug, stdout,logfile
### 把日志信息输出到控制台 ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.SimpleLayout
### 把日志信息输出到文件:T200.log ###
log4j.appender.logfile=org.apache.log4j.FileAppender
log4j.appender.logfile.File=T200.log
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss}%l %F %p %m%n
mybatis-config.xml
把需要扫描的包改成自己的
<?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>
<settings>
<!--配置支持log4-->
<setting name="logImpl" value="LOG4J"/>
<!--关闭mabatss自动映射,默认PARTIAL,自动匹配所有-->
<setting name="autoMappingBehavior" value="FULL"/>
</settings>
<typeAliases>
<!--扫描pojo下所有实体类-->
<package name="com.jiahe.pojo"/>
</typeAliases>
<mappers>
<!--填写映射的mapper路径-->
<mapper resource="com/jiahe/dao/SmsbmsMapper.xml"/>
<mapper resource="com/jiahe/dao/BillMapper.xml"/>
</mappers>
</configuration>
spring-dao.xml
把需要扫描的包改成自己的
<?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">
<!-- 配置整合mybatis -->
<!-- 1.关联数据库文件 -->
<context:property-placeholder location="classpath:database.properties"/>
<!-- 2.数据库连接池 -->
<!--数据库连接池
dbcp 半自动化操作 不能自动连接
c3p0 自动化操作(自动的加载配置文件 并且设置到对象里面)
-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!-- 配置连接池属性 -->
<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连接池的私有属性 -->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!-- 关闭连接后不自动commit -->
<property name="autoCommitOnClose" value="false"/>
<!-- 获取连接超时时间 -->
<property name="checkoutTimeout" value="10000"/>
<!-- 当获取连接失败重试次数 -->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!-- 3.配置SqlSessionFactory对象 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"/>
<!-- 配置MyBaties全局配置文件:mybatis-config.xml -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!-- 4.配置扫描Dao接口包,动态实现Dao接口注入到spring容器中 -->
<!--解释 :https://www.cnblogs.com/jpfss/p/7799806.html-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 给出需要扫描Dao接口包 -->
<property name="basePackage" value="com.jiahe.dao"/>
</bean>
</beans>
spring-mvc.xml
把需要扫描的包改成自己的
<?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">
<!--扫描的controller包->
<context:component-scan base-package="controller包路径用." />
<mvc:annotation-driven>
<!--配置消息转换器,解决中文乱码-->
<mvc:message-converters>
<bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>application/json;charset=utf-8</value>
</list>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<mvc:cors>
<mvc:mapping path="/**"
allowed-origins="*"
allowed-methods="POST, GET, OPTIONS, DELETE, PUT"
allowed-headers="Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With"
allow-credentials="true" />
</mvc:cors>
<!-- 配置SpringMVC -->
<!-- 1.开启SpringMVC注解驱动 -->
<mvc:annotation-driven />
<!-- 2.静态资源默认servlet配置-->
<mvc:default-servlet-handler/>
<!-- 3.配置jsp 显示ViewResolver视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp" />
</bean>
<!-- 4.扫描web相关的bean -->
</beans>
spring-service.xml
把需要映射的impl改成自己的类
<?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">
<!-- 扫描service相关的bean -->
<context:component-scan base-package="com.jiahe.service"/>
<!--SmsbmsServiceimpl注入到IOC容器中-->
<bean id="SmsbmsServiceimpl" class="com.jiahe.service.SmsbmsServiceimpl">
<property name="smsbmsMapper" ref="smsbmsMapper"/>
</bean>
<bean id="实现类" class="实现类的路径">
<property name="需要映设的SET" ref="需要映设的SET"/>
</bean>
<!-- 配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
把这些都打上勾
web.xml
不需要改
<?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>
<!--一定要注意:我们这里加载的是总的配置文件,之前被这里坑了!-->
<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过期时间-->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
三层架构
dao 核心注解 @Mapper
package com.jiahe.dao;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface AuctionMapper {
}
service
package com.jiahe.service;
public interface AuctionuserService {
/**
* 登录
* @param
* @return
*/
boolean login(String usname,String password);
}
serviceImpl 核心注解 @Service SET注入
package com.jiahe.service.impl;
import com.jiahe.dao.AuctionuserMapper;
import com.jiahe.pojo.Auctionuser;
import com.jiahe.service.AuctionuserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class AuctionuserServiceImpl implements AuctionuserService {
@Autowired
private AuctionuserMapper auctionuserMapper;
public void setAuctionuserMapper(AuctionuserMapper auctionuserMapper) {
this.auctionuserMapper = auctionuserMapper;
}
@Override
public boolean login(String usname,String password) {
Auctionuser auctionuser = auctionuserMapper.getAuctionuser(usname);
if(auctionuser!=null){
if (password.equals(auctionuser.getUserPassword())){
return true;
}
}
return false;
}
}
pojo 注解 lombok
package com.jiahe.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor //所有构造
@NoArgsConstructor
public class Auctionuser {
private int userId;
private String userName;
private String userPassword;
private String userCardNo;
private String userTel;
private String userAddress;
private String userPostNumber;
private int userIsAdmin;
private String userQuestion;
private String userAnswer;
}
TEST测试
import com.jiahe.service.AuctionuserService;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Testf {
@Qualifier("AuctionuserServiceImpl")
private AuctionuserService auctionuserService;
@Test
public void test1(){
ClassPathXmlApplicationContext classPathXmlApplicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
AuctionuserService auctionuserService = (AuctionuserService) classPathXmlApplicationContext.getBean("AuctionuserServiceImpl");
boolean admin = auctionuserService.login("ff","123456");
System.out.println(admin);
}
}
简单的登录就完成了
Controller 返回json数据
package com.jiahe.controller;
import com.alibaba.fastjson.JSON;
import com.jiahe.service.impl.AuctionuserServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/*@RestController*/ //不跳转在本页面显示
@Controller //跳转网页
@RequestMapping(value = "/system", produces = {"application/json;charset=UTF-8"})
public class AuctionuserController {
@Autowired
@Qualifier("AuctionuserServiceImpl")
private AuctionuserServiceImpl userService;
@RequestMapping("/login")
public String login(String usname,String password){
boolean login = userService.login(usname, password);
System.out.println(login);
return JSON.toJSONString(login);
}
}
扩展Web使用方法
在main目录下手动添加一个Webapp包
添加一个WEB-INF
下面再写一个Web.xml
在目录下把web添加上