SSM项目快速建立

前言

SSM框架阶段性学习后,从头到尾搭建一个项目,记录过程。

项目环境:

  • IDEA:2020.1
  • jdk:1.8
  • tomcat:9.0.37
  • Maven:3.6.1
  • MySQL:8.0.20

原始方式整合

首先创建一个Maven项目,目录如下:

创建test数据库,在其中创建account表,设置id(int,主键、自增)、name(varchar)和money(double)字段:

配置pom.xml的依赖:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
<?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/maven-v4_0_0.xsd">

<modelVersion>4.0.0</modelVersion>
<packaging>war</packaging>

<name>ssm</name>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>6</source>
<target>6</target>
</configuration>
</plugin>
</plugins>
</build>
<groupId>org.example</groupId>
<artifactId>ssm</artifactId>
<version>1.0-SNAPSHOT</version>

<dependencies>
<!--spring相关-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.0.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.7</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.0.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.0.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.0.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.0.5.RELEASE</version>
</dependency>
<!--servlet和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>
<!--mybatis相关-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.21</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!--junit测试-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>

</project>

/src/main/java/ssm/domain目录下编写Account类:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
public class Account {
private Integer id;
private String name;
private Double money;

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Double getMoney() {
return money;
}

public void setMoney(Double money) {
this.money = money;
}

@Override
public String toString() {
return "Account{" +
"id=" + id +
", name='" + name + '\'' +
", money=" + money +
'}';
}
}

/src/main/java/ssm/mapper目录下编写接口AccountMapper

1
2
3
4
5
6
7
import ssm.domain.Account;
import java.util.List;

public interface AccountMapper {
public void save(Account account);
public List<Account> findAll();
}

/src/main/java/ssm/service目录下编写接口AccountService

1
2
3
4
5
6
7
import ssm.domain.Account;
import java.util.List;

public interface AccountService {
public void save(Account account);
public List<Account> findAll();
}

/src/main/java/ssm/service/impl目录下编写AccountServiceImpl实现类:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
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.springframework.stereotype.Service;
import ssm.domain.Account;
import ssm.mapper.AccountMapper;
import ssm.service.AccountService;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

@Service("accountService")
public class AccountServiceImpl implements AccountService {
@Override
public void save(Account account) {
try {
InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
SqlSession sqlSession = sqlSessionFactory.openSession();
AccountMapper mapper = sqlSession.getMapper(AccountMapper.class);
mapper.save(account);
sqlSession.commit();
sqlSession.close();
} catch (IOException e) {
e.printStackTrace();
}
}

@Override
public List<Account> findAll() {
try {
InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
SqlSession sqlSession = sqlSessionFactory.openSession();
AccountMapper mapper = sqlSession.getMapper(AccountMapper.class);
List<Account> accountList = mapper.findAll();
sqlSession.close();
return accountList;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}

/src/main/java/ssm/controller目录下编写AccountController类:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import ssm.domain.Account;
import ssm.service.AccountService;

import java.util.List;

@Controller
@RequestMapping("/account")
public class AccountController {

@Autowired
private AccountService accountService;

//保存
@RequestMapping(value = "/save", produces = "text/html;charest=UTF-8")
@ResponseBody
public String save(Account account) {
accountService.save(account);
return "保存成功!";
}

//查询
@RequestMapping("/findAll")
public ModelAndView findAll() {
List<Account> accountList = accountService.findAll();
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("accountList",accountList);
modelAndView.setViewName("accountList");
return modelAndView;
}
}

/src/main/webapp目录下编写index.jsp页面:

1
2
3
4
5
6
7
8
9
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h2>Hello World!</h2>
</body>
</html>

/src/main/webapp目录下编写save.jsp页面:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h1>添加账户信息表单</h1>
<form name="accountForm" action="${pageContext.request.contextPath}/account/save" method="post">
账户名称:<input type="text" name="name"><br>
账户金额:<input type="text" name="money"><br>
<input type="submit" value="保存"><br>
</form>
</body>
</html>

/src/main/webapp/WEB-INF/pages目录下编写accountList.jsp页面:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h1>展示账户数据</h1>
<table border="1">
<tr>
<th>账户id</th>
<th>账户名称</th>
<th>账户金额</th>
</tr>
<c:forEach items="${accountList}" var="account">
<tr>
<td>${account.id}</td>
<td>${account.name}</td>
<td>${account.money}</td>
</tr>
</c:forEach>
</table>
</body>
</html>

/src/main/resources目录下编写jdbc.properties配置文件:

1
2
3
4
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
jdbc.username=root
jdbc.password=root

/src/main/resources目录下编写log4j.properties配置文件:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
#
# Hibernate, Relational Persistence for Idiomatic Java
#
# License: GNU Lesser General Public License (LGPL), version 2.1 or later.
# See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
#

### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### direct messages to file hibernate.log ###
#log4j.appender.file=org.apache.log4j.FileAppender
#log4j.appender.file.File=hibernate.log
#log4j.appender.file.layout=org.apache.log4j.PatternLayout
#log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### set log levels - for more verbose logging change 'info' to 'debug' ###

log4j.rootLogger=all, stdout

/src/main/webapp/WEB-INF目录下编写web.xml配置文件:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
<?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">

<!--配置spring监听器-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!--配置springmvc的前端控制器-->
<servlet>
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.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>

<!--乱码过滤器-->
<filter>
<filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

</web-app>

/src/main/resources目录下编写applicationContext.xml配置文件:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">

<!--组件扫描 扫描service和mapper-->
<context:component-scan base-package="ssm">
<!--排除controller的扫描-->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>

</beans>

/src/main/resources目录下编写spring-mvc.xml配置文件:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
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
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">

<!--组件扫描 主要扫描controller-->
<context:component-scan base-package="ssm.controller"></context:component-scan>

<!--配置mvc注解驱动-->
<mvc:annotation-driven></mvc:annotation-driven>

<!--内部资源视图解析器-->
<bean id="resourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"></property>
<property name="suffix" value=".jsp"></property>
</bean>

<!--开放静态资源访问权限-->
<mvc:default-servlet-handler></mvc:default-servlet-handler>

</beans>

/src/main/resources/ssm/mapper目录下编写AccountMapper.xml配置文件:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
<?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="ssm.mapper.AccountMapper">

<insert id="save" parameterType="account">
insert into account values(#{id},#{name},#{money})
</insert>

<select id="findAll" resultType="account">
select * from account
</select>

</mapper>

/src/main/resources目录下编写sqlMapConfig.xml配置文件:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
<?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>

<!--加载properties文件-->
<properties resource="jdbc.properties"></properties>

<!--定义别名-->
<typeAliases>
<!--<typeAlias type="ssm.domain.Account" alias="account"></typeAlias>-->
<!--扫包的方式(包下所有的实体都赋予别名:类名小写)-->
<package name="ssm.domain"></package>
</typeAliases>

<!--数据源环境-->
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"></transactionManager>
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</dataSource>
</environment>
</environments>

<!--加载映射-->
<mappers>
<!--<mapper resource="ssm/mapper/AccountMapper.xml"></mapper>-->
<!--扫包方式-->
<package name="ssm.mapper"/>
</mappers>

</configuration>

配置tomcat,启动服务。

浏览器访问:localhost:8080/save.jsp

如图添加信息,提交表单,刷新数据库,可以看到信息已添加:

浏览器访问:localhost:8080/account/findAll

展示用户数据(如下图)

Spring整合MyBatis

  • 将Session工厂交给Spring容器管理,从容器中获得执行操作的Mapper实例
  • 将事务的控制交给Spring容器进行声明式事务控制

在同一目录下复制sqlMapConfig.xml配置文件,并重命名为sqlMapConfig-spring.xml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
<?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>

<!--定义别名-->
<typeAliases>
<!--<typeAlias type="ssm.domain.Account" alias="account"></typeAlias>-->
<!--扫包的方式(包下所有的实体都赋予别名:类名小写)-->
<package name="ssm.domain"></package>
</typeAliases>

</configuration>

编写AccountServiceImpl实现类:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import ssm.domain.Account;
import ssm.mapper.AccountMapper;
import ssm.service.AccountService;

import java.util.List;

@Service("accountService")
public class AccountServiceImpl implements AccountService {

@Autowired
private AccountMapper accountMapper;

@Override
public void save(Account account) {
accountMapper.save(account);
}

@Override
public List<Account> findAll() {
return accountMapper.findAll();
}
}

编写applicationContext.xml配置文件:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">

<!--组件扫描 扫描service和mapper-->
<context:component-scan base-package="ssm">
<!--排除controller的扫描-->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>

<!--加载properties文件-->
<context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>

<!--配置数据源信息-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"></property>
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>

<!--配置sessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!--加载mybatis核心文件-->
<property name="configLocation" value="classpath:sqlMapConfig-spring.xml"></property>
</bean>

<!--扫描mapper所在的包 为mapper创建实现类-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="ssm.mapper"></property>
</bean>

<!--声明式事物控制-->
<!--平台事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>

<!--配置事务增强-->
<tx:advice id="txAdvice">
<tx:attributes>
<tx:method name="*"/>
</tx:attributes>
</tx:advice>

<!--事务的aop织入-->
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* ssm.service.impl.*.*(..))"></aop:advisor>
</aop:config>

</beans>

重新启动tomcat服务,进行测试。


后记

学一遍懵懵的,前面好多东西还得复习。

关于aop(面向切面编程)的内容以后有时间补充。