IDEA下SSM环境搭建
环境： jdk1.8 maven3.4
- new 一个project，这里我们选择最普通的maven项目
这里我打算将此工程作为一个父项目来处理，也就是说我们只需要它的一个大体的框架和相关依赖，因此删除它的src目录
父项目搭建完成
- 引入相关依赖文件，直接复制粘贴进去
<properties>
<spring.version>5.1.5.RELEASEspring.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aspectsartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-context-supportartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>com.fasterxml.jackson.coregroupId>
<artifactId>jackson-databindartifactId>
<version>2.9.9version>
dependency>
<dependency>
<groupId>commons-fileuploadgroupId>
<artifactId>commons-fileuploadartifactId>
<version>1.3.1version>
dependency>
<dependency>
<groupId>commons-iogroupId>
<artifactId>commons-ioartifactId>
<version>2.4version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>3.4.2version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatis-springartifactId>
<version>1.3.1version>
dependency>
<dependency>
<groupId>com.github.pagehelpergroupId>
<artifactId>pagehelperartifactId>
<version>5.0.0version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.41version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>1.1.10version>
dependency>
<dependency>
<groupId>jstlgroupId>
<artifactId>jstlartifactId>
<version>1.2version>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>javax.servlet-apiartifactId>
<version>3.0.1version>
<scope>providedscope>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.12version>
dependency>
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>1.2.16version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>fastjsonartifactId>
<version>1.2.47version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>poiartifactId>
<version>3.9version>
dependency>
dependencies>
<build>
<resources>
<resource>
<directory>src/main/reourcesdirectory>
<includes>
<include>**/*.propertiesinclude>
<include>**/*.xmlinclude>
includes>
resource>
<resource>
<directory>src/main/javadirectory>
<includes>
<include>**/*.propertiesinclude>
<include>**/*.xmlinclude>
includes>
resource>
resources>
build>
确保我们的文件能够正确载入
- 在父项目的基础上新建子模块，在原工程上右键new module
还是最简单的maven项目
完成
- 但很显然这算不上一个web项目，于是我们载入支持。
但项目还缺少lib目录，我们去右上角给它建立lib目录
5.紧接着去项目的src目录，我们发现resources目录不符合规范，手动将其配置成资源目录。
配置完成后我们建立对应的结构，已知项目下需要spring配置，mybatis配置，springmvc配置，日志，properties文件，而且还希望mapper的xml在这里，所以我们需要建立三个文件夹，两个文件。
然后我们建立一个config.properties文件，内容如下，数据库和密码需要填写自己的。
内容：
#############################\u6570\u636E\u6E90\u76F8\u5173\u914D\u7F6E########################################
url:jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf8&characterSetResults=utf8
driverClassName:com.mysql.jdbc.Driver
jdbc_username:root
jdbc_password:root
filters:stat
maxActive:20
initialSize:1
maxWait:60000
minIdle:10
timeBetweenEvictionRunsMillis:60000
minEvictableIdleTimeMillis:300000
validationQuery:SELECT 'x'
testWhileIdle:true
testOnBorrow:false
testOnReturn:false
maxOpenPreparedStatements:20
removeAbandoned:true
removeAbandonedTimeout:1800
logAbandoned:true
再按照刚才的步骤建立log4j.properties文件，内容如下：
# Global logging configuration\uff0c\u5efa\u8bae\u5f00\u53d1\u73af\u5883\u4e2d\u8981\u7528debug
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
接下来本应该配置spring一系列，但考虑到配置的时候要装载上包扫描，所以我们先把对应的搭建结构整出来。
接下来我么建立spring配置文件，在spring 文件夹下，这里取为beans_core.xml
内容：
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">
<context:annotation-config/>
<context:component-scan base-package="com.ssm">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller">context:exclude-filter>
context:component-scan>
<context:property-placeholder location="classpath:config.properties">context:property-placeholder>
<bean id="ds" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
<property name="url" value="${url}" />
<property name="username" value="${jdbc_username}" />
<property name="password" value="${jdbc_password}" />
<property name="driverClassName" value="${driverClassName}" />
<property name="filters" value="${filters}" />
<property name="maxActive" value="${maxActive}" />
<property name="initialSize" value="${initialSize}" />
<property name="maxWait" value="${maxWait}" />
<property name="minIdle" value="${minIdle}" />
<property name="timeBetweenEvictionRunsMillis" value="${timeBetweenEvictionRunsMillis}" />
<property name="minEvictableIdleTimeMillis" value="${minEvictableIdleTimeMillis}" />
<property name="validationQuery" value="${validationQuery}" />
<property name="testWhileIdle" value="${testWhileIdle}" />
<property name="testOnBorrow" value="${testOnBorrow}" />
<property name="testOnReturn" value="${testOnReturn}" />
<property name="maxOpenPreparedStatements" value="${maxOpenPreparedStatements}" />
<property name="removeAbandoned" value="${removeAbandoned}" />
<property name="removeAbandonedTimeout" value="${removeAbandonedTimeout}" />
<property name="logAbandoned" value="${logAbandoned}" />
bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="ds">property>
<property name="mapperLocations" value="classpath:mybatis/mapper/*.xml">property>
<property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml">property>
<property name="plugins">
<array>
<bean class="com.github.pagehelper.PageInterceptor">
<property name="properties">
<value>
helperDialect=mysql
reasonable=true
supportMethodsArguments=true
params=count=countSql
autoRuntimeDialect=true
value>
property>
bean>
array>
property>
bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.ssm.mapper">property>
bean>
<bean id="tm" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="ds">property>
bean>
<tx:annotation-driven transaction-manager="tm"/>
beans>
如果刚才建立的包结构跟我的是不一样的，需要在第20行和第100行将包扫描修改成自己的。
同时建立springmvc文件夹下的springmvc.xml文件，内容如下
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
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-4.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd">
<context:component-scan base-package="com.ssm.controller" />
<mvc:annotation-driven/>
<mvc:default-servlet-handler />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/">property>
<property name="suffix" value=".jsp">property>
bean>
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="UTF-8"/>
<property name="maxUploadSize" value="10485760"/>
<property name="maxUploadSizePerFile" value="10485760"/>
bean>
beans>
如果包不一样记得修改：
接着是mybatis文件夹，文件夹下建立一个mapper文件夹用来存xml文件，再建立一个mybatis配置文件，这里叫sqlMapConfig.xml，内容如下：
<?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>
</configuration>
同时别忘记去修改web.xml文件。
内容如下,直接粘贴进去：
<context-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:spring/beans_core.xmlparam-value>
context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
listener>
<servlet>
<servlet-name>springmvcservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:springmvc/springmvc.xmlparam-value>
init-param>
<load-on-startup>1load-on-startup>
servlet>
<servlet-mapping>
<servlet-name>springmvcservlet-name>
<url-pattern>/url-pattern>
servlet-mapping>
<filter>
<filter-name>encodingFilterfilter-name>
<filter-class>
org.springframework.web.filter.CharacterEncodingFilter
filter-class>
<init-param>
<param-name>encodingparam-name>
<param-value>UTF-8param-value>
init-param>
<init-param>
<param-name>forceEncodingparam-name>
<param-value>trueparam-value>
init-param>
filter>
<filter-mapping>
<filter-name>encodingFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<welcome-file-list>
<welcome-file>index.jspwelcome-file>
welcome-file-list>
这样一来大体的文件配置就完成了。
- 然后根据数据库去配置实体类和接口等，java目录下的结构如下
实体类：
package com.ssm.pojo;
import java.io.Serializable;
public class User implements Serializable {
private int id;
private String name;
private String pwd;
public User() {
super();
}
public User(int id, String name, String pwd) {
this.id = id;
this.name = name;
this.pwd = pwd;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", name='" + name + '\'' +
", pwd='" + pwd + '\'' +
'}';
}
}
Controller:
package com.ssm.controller;
import com.ssm.pojo.User;
import com.ssm.service.UserService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.annotation.Resource;
import java.util.List;
@Controller
public class UserController {
@Resource
private UserService userService;
@RequestMapping("/selectUser")
@ResponseBody
public List<User> selectUser(){
List<User> users = userService.selectUser();
return users;
}
}
Service接口：
package com.ssm.service;
import com.ssm.pojo.User;
import java.util.List;
public interface UserService {
public List<User> selectUser();
}
ServiceImpl实现类：
package com.ssm.service;
import com.ssm.mapper.UserMapper;
import com.ssm.pojo.User;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.List;
@Service
public class UserServiceImpl implements UserService {
@Resource
private UserMapper userMapper;
@Override
public List<User> selectUser() {
return userMapper.selectUser();
}
}
mapper接口：
package com.ssm.mapper;
import com.ssm.pojo.User;
import java.util.List;
public interface UserMapper {
List<User> selectUser();
}
resources下mapper文件夹建立mapper.xml文件
xml内容：
<?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.ssm.mapper.UserMapper">
<select id="selectUser" resultType="com.ssm.pojo.User">
select * from mybatis.user
</select>
</mapper>
这算完整的配置好了项目。
- 于是我们准备一下配置好tomcat跑项目。
最后访问我们的接口，出现数据。
