SSM框架搭建流程
搭建Spring框架
創建一個maven的web項目
2、創建項目之後,會發生報錯,缺少web-inf下的web.xml文件
3、從其他項目中拷貝下來web.xml文件
項目不報錯拉。
MVC設計模式創建包路徑和目錄
利用MVC設計模式:
開始搭建spring框架
配置pom.xml文件:
<!-- 整合spring框架 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
創建applicationContext.xml文件
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
</beans>
測試spring框架
創建User對象類:
配置applicationContext.xml
<bean id="user" class="cn.tedu.pojo.User"></bean>
寫測試類
寫測試類:
public class TestSpring {
@Test
public void test() {
//加載spring的文件
ClassPathXmlApplicationContext cpx = new ClassPathXmlApplicationContext("spring/applicationContext.xml");
//獲取bean對象
User user = (User)cpx.getBean("user");
System.out.println(user);
}
}
運行結果
搭建SpringMVC框架
配置springmvc-config的文件
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<mvc:default-servlet-handler/>
<!-- 註解驅動,識別註解 -->
<mvc:annotation-driven></mvc:annotation-driven>
<!-- 配置掃描包 -->
<context:component-scan base-package="cn.tedu.controller">
</context:component-scan>
<!-- 配置內部資源的解析器
prefix:路徑的前綴
suffix:文件的後綴
-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
配置web.xml文件:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>day_jsp</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<!-- 配置springmvc, 將所有請求交給springmvc來處理 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置springmvc核心配置文件的位置,默認Springmvc的配置文件是在WEB-INF目錄下,默認的名字爲springmvc-servlet.xml,如果要放在其他目錄,則需要指定如下配置: -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/*.xml</param-value>
</init-param>
</servlet>
<!-- 其中的斜槓(/)表示攔截所有請求(除JSP以外), 所有請求都要經過springmvc前端控制器 -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 亂碼處理過濾器 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 指定編碼集 -->
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<!-- 指定攔截方式爲攔截所有請求 -->
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
測試springmvc框架
寫一個TestSpringmvc的測試類:
@Controller
public class TestSpringmvc {
@RequestMapping("/test")
public String test() {
return "test1";
}
}
在pages下創建test1.jsp:
<%@ page pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<h1>test springmvc</h1>
</body>
</html>
發現報錯:
解決方法:
配置tomcat服務器:如上
保證項目不報錯。
將項目部署到tomcat服務器上:
右鍵運行tomcat:即可
瀏覽器輸入進行測試
搭建mybatis框架
pom.xml文件中添加依賴
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.8</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.32</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.6</version>
</dependency>
配置mybatis-config
<?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">
<!-- MyBatis的全局配置文件 -->
<configuration >
<!-- 1.配置開發環境 -->
<environments default="develop">
<!-- 這裏可以配置多個環境,比如develop,test等 -->
<environment id="develop">
<!-- 1.1.配置事務管理方式:JDBC:將事務交給JDBC管理(推薦) -->
<transactionManager type="JDBC"></transactionManager>
<!-- 1.2.配置數據源,即連接池方式:JNDI/POOLED/UNPOOLED -->
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/llxy_db?characterEncoding=utf-8"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</dataSource>
</environment>
</environments>
<!-- 2.加載Mapper配置文件,路徑以斜槓間隔: xx/xx/../xx.xml -->
<mappers>
<mapper resource="mybatis/mapper/UserMapper.xml"/>
</mappers>
</configuration>
注意修改:"jdbc:mysql://localhost:3306/llxy_db?characterEncoding=utf-8"數據庫名稱。
利用之前的創建好的User對象:
package cn.tedu.pojo;
import java.util.Date;
/**
* @author 作者: bjzhangjian
* @version 創建時間:2020年5月19日 上午9:45:36
* @description 描述:pojo對象
*/
public class User {
private Integer userid;
private String username;
private String password;
private Date regtime;
private String email;
private String telephone;
public Integer getUserid() {
return userid;
}
public void setUserid(Integer userid) {
this.userid = userid;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Date getRegtime() {
return regtime;
}
public void setRegtime(Date regtime) {
this.regtime = regtime;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getTelephone() {
return telephone;
}
public void setTelephone(String telephone) {
this.telephone = telephone;
}
@Override
public String toString() {
return "User [userid=" + userid + ", username=" + username + ", password=" + password + ", regtime=" + regtime
+ ", email=" + email + ", telephone=" + telephone + "]";
}
}
新建UserMapper.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>
</mapper>
<mapper namespace="cn.tedu.dao.UserMapper">
</mapper>
Dao層下新建UserMapper 接口
public interface UserMapper {
public List<User> findAll();
}
在userMapper.xml–mapper標籤下中添加:
<!-- 查詢user表中的所有的信息 -->
<select id="findAll" resultType="cn.tedu.pojo.User">
select *from user
</select>
寫測試類TestMybatis類(寫數據庫表設計)
數據庫準備
代碼實現
package cn.tedu.controller;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;
import cn.tedu.dao.UserMapper;
import cn.tedu.pojo.User;
/**
* @author 作者: bjzhangjian
* @version 創建時間:2020年5月15日 上午10:46:07
* @description 描述:
*/
public class TestMybatis {
private static SqlSession session = null;
static{
//讀取核心配置文件mybatis-config.xml
InputStream in;
try {
in = Resources.getResourceAsStream("mybatis/mybatis-config.xml");
//獲取一個sqlsessionFactory工廠對象
SqlSessionFactory fac = new SqlSessionFactoryBuilder().build(in);
//獲取一個sqlsession對象
session = fac.openSession();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* 接口開發
*/
@Test
public void testFindById() {
UserMapper mapper = session.getMapper(UserMapper.class);
List<User> list = mapper.findAll();
for (User user : list) {
System.out.println(user);
}
}
}
運行結果
整合spring和mybatis
去除掉:mybatis-config中的配置信息
<?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">
<!-- MyBatis的全局配置文件 -->
<configuration >
<!-- 1.配置開發環境 -->
<!-- 這裏可以配置多個環境,比如develop,test等 -->
<!-- 1.1.配置事務管理方式:JDBC:將事務交給JDBC管理(推薦) -->
<!-- 1.2.配置數據源,即連接池方式:JNDI/POOLED/UNPOOLED -->
<!-- 2.加載Mapper配置文件,路徑以斜槓間隔: xx/xx/../xx.xml -->
</configuration>
在applicationContext中:配置druid連接池
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- 1.加載jdbc.properties文件的位置 -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 2.配置druid連接池 ,id是固定值,class是druid連接池類的全路徑 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<!--配置連接數據庫的基本信息 -->
<property name="driverClassName" value="${db.driverClassName}"></property>
<property name="url" value="${db.url}"></property>
<property name="username" value="${db.username}"></property>
<property name="password" value="${db.password}"></property>
</bean>
<!-- 3.整合spring和mybatis框架
將SqlSession等對象的創建交給Spring容器
id值(sqlSessionFactory)是固定值
-->
<bean id="sqlSessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 3.1.指定mybatis核心配置文件的位置 -->
<property name="configLocation"
value="classpath:mybatis/mybatis-config.xml"></property>
<!-- 3.2.配置連接池(數據源) ref指向連接池bean對象的id值 -->
<property name="dataSource" ref="dataSource"></property>
<!-- 3.3、掃描所有的 XxxMapper.xml映射文件,讀取其中配置的SQL語句 -->
<property name="mapperLocations" value="classpath:mybatis/mapper/*.xml"/>
</bean>
<!-- 5、定義mapper接口掃描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 掃描所有XxxMapper接口,將接口實例的創建交給spring容器 -->
<property name="basePackage"
value="cn.tedu.dao"/>
</bean>
<!-- 6.配置需要掃描的包(service層):spring自動去掃描 base-package下的類,
如果掃描到的類上有 @Controller、@Service、@Component等註解,
將會自動將類註冊爲bean(即由spring創建實例)
-->
<context:component-scan
base-package="cn.tedu.service">
</context:component-scan>
<!-- 聲明bean對象 -->
<bean id="user" class="cn.tedu.pojo.User"></bean>
</beans>
新建jdbc.properties
在resource下新建jdbc.properties
db.driverClassName=com.mysql.jdbc.Driver
db.url=jdbc:mysql:///mishop?characterEncoding=utf-8
db.username=root
db.password=root
編寫測試SSM的測試類
package cn.tedu.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import cn.tedu.dao.UserMapper;
import cn.tedu.pojo.User;
/**
* @author 作者: bjzhangjian
* @version 創建時間:2020年5月19日 上午11:25:42
* @description 描述:
*/
@Controller
public class TestSSM {
@Autowired //自動裝配:自動爲屬性賦值操作
UserMapper mapper;
@RequestMapping("/testssm")
public String test() {
List<User> list = mapper.findAll();
for (User user : list) {
System.out.println(user);
}
return "test";
}
}
運行結果
SSM框架全部搞定搭建,初學者學習很適合的。歡迎關注。分享給身邊有需要的人。