从零开始写项目第一篇【搭建环境】
使用Maven搭建SSM环境
SSM需要的基础jar包有哪些？？整理一下：
c3p0数据连接池
springMVC的JSON
springAOP
springCore
springPersitence
springWeb
myBatis
myBatisSpring
mysql
mybatis逆向工程插件
2017/10/24 16:00:31
我去的是：http://mvnrepository.com/这个网站中找jar包，大多数使用最新的jar包
本来是使用spring5来进行整合的，结果与asm冲突了，网上又没什么解决方案。
最后妥协了改成3.2.2
pom.xml文件配置
pom.xml
<?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>fuchengWeb</name>
<groupId>fuchengWeb</groupId>
<artifactId>fuchengWeb</artifactId>
<version>1.0-SNAPSHOT</version>
<!--逆向工程插件-->
<build>
<finalName>zhongfucheng</finalName>
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<!--c3p0-->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!--json-->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.13</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<!--mybatis-spring-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
<!--spring aop-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>3.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.11</version>
</dependency>
<dependency>
<groupId>org.aopalliance</groupId>
<artifactId>com.springsource.org.aopalliance</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>net.sourceforge.cglib</groupId>
<artifactId>com.springsource.net.sf.cglib</artifactId>
<version>2.1.3</version>
</dependency>
<!--spring-core-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>3.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>com.springsource.org.apache.commons.logging</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>3.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>3.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>3.2.2.RELEASE</version>
<scope>test</scope>
</dependency>
<!--spring-persitence-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>3.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>3.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>org.springframework.transaction</artifactId>
<version>3.2.2.RELEASE</version>
</dependency>
<!--spring-web-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>3.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.2.2.RELEASE</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.22.0-CR2</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.2.5</version>
</dependency>
<dependency>
<groupId>org.objectweb.asm</groupId>
<artifactId>com.springsource.org.objectweb.asm</artifactId>
<version>2.2.3</version>
</dependency>
</dependencies>
</project>
如果觉得下载太慢的话，我们可以使用阿里云的私服。只要在settings下配置如下代码即可：
<mirror>
<id>nexus-aliyun</id>
<mirrorOf>*</mirrorOf>
<name>Nexus aliyun</name>
<url>http://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>
创建mysql用户和数据库
mysql用户：
用户名：xxxx
密码：xxxx
数据库：
xxxx
mybatis配置文件
myBatis-config.xml
<?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>
<!-- 通过别名简化对类的使用 -->
<typeAliases>
<package name="zhongfucheng.entity"/>
</typeAliases>
</configuration>
application-context配置文件
<?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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd">
<!--配置数据源-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver"/>
<property name="jdbcUrl"
value="jdbc:mysql://localhost:3306/xxxx?useUnicode=true&characterEncoding=UTF-8"/>
<property name="user" value="xxxx"/>
<property name="password" value="xxxx"/>
</bean>
<!-- 配置session工厂，加载mybatis配置文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:myBatis-config.xml"/>
<!--配置扫描式加载SQL映射文件,那么在mybatis配置文件中就不用加载了-->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<!-- 配置事务管理器,管理数据源事务处理 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 配置事务通知 -->
<tx:advice id="advice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 默认只处理运行时异常，可加rollback-for="Exception/Throwable"等处理所有异常或包括错误 -->
<tx:method name="insert*" propagation="REQUIRED"
rollback-for="Exception"/>
<tx:method name="update*" propagation="REQUIRED"
rollback-for="Exception"/>
<tx:method name="delete*" propagation="REQUIRED"
rollback-for="Exception"/>
<tx:method name="*" propagation="SUPPORTS"/>
</tx:attributes>
</tx:advice>
<!-- 配置切面织入的范围,后边要把事务边界定在service层 -->
<aop:config>
<aop:advisor advice-ref="advice"
pointcut="execution(* zhongfucheng.service.impl.*.*(..))"/>
</aop:config>
<!-- 配置SessionTemplate，已封装了繁琐的数据操作，提交事务都不用做了。 -->
<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"/>
</bean>
<!-- 自动扫描组件，要把controller去除，他们是在spring-mvc.xml中配置，如果不去除会影响事务管理。 -->
<context:component-scan base-package="zhongfucheng">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--使用Mapper代理-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
<property name="basePackage" value="zhongfucheng.dao" />
</bean>
</beans>
配置spring-mvc
spring-mvc.xml
<?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"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
">
<!-- 同时开启json格式的支持 -->
<mvc:annotation-driven></mvc:annotation-driven>
<!-- 扫描所有的controller 但是不扫描service -->
<context:component-scan base-package="zhongfucheng">
<context:include-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Service" />
</context:component-scan>
<!--视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
逆向生成的配置文件
generatorConfig.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE generatorConfiguration PUBLIC
"-//mybatis.org//DTD MyBatis Generator Configuration
1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"
>
<generatorConfiguration>
<!-- 制定mysql的驱动包的路径 千万别放中文路径下 -->
<classPathEntry
location="X:\Users\ozc\Desktop\zhongfuchengWeb\mysql\mysql-connector-java\5.1.34\mysql-connector-java-5.1.34.jar"/>
<!-- 配置数据源和生成的代码所存放的位置 -->
<context id="context1">
<commentGenerator>
<!-- 是否取消注释 -->
<property name="suppressAllComments" value="true"/>
<!-- 是否生成注释代时间戳 -->
<property name="suppressDate" value="true"/>
</commentGenerator>
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/zhongfucheng" userId="zhongfucheng"
password="zhong"/>
<!-- 所生成的实体类的位置默认资源包src -->
<javaModelGenerator targetPackage="zhongfucheng.entity" targetProject="src/main/java"/>
<!-- 所生成的sqlMap的影射文件的位置,默认资源包src -->
<sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources"/>
<!-- 配置dao接口生成信息-->
<javaClientGenerator type="XMLMAPPER" targetPackage="zhongfucheng.dao" targetProject="src/main/java"/>
<!-- 为哪些表生成代码 tableName:表名 schema:不用填写 -->
<table schema="" tableName="EB_ORDER_DETAIL" enableCountByExample="false"
enableUpdateByExample="false" enableDeleteByExample="false"
enableSelectByExample="false" selectByExampleQueryId="false"
>
</table>
</context>
</generatorConfiguration>
web.xml配置
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<!--Spring监听器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicatoin-context.xml</param-value>
</context-param>
<!--springMVC核心分配器-->
<servlet>
<servlet-name>springmvc</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>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!--中文乱码过滤器-->
<filter>
<filter-name>SpringCharacterEncodingFilter</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>SpringCharacterEncodingFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
</web-app>
log4j配置文件
log4j.properties
# Rules reminder:
# DEBUG < INFO < WARN < ERROR < FATAL
# Global logging configuration
log4j.rootLogger=debug,stdout
# My logging configuration...
log4j.logger.cn.jbit.mybatisdemo=DEBUG
## Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p %d %C: %m%n
log4j.logger.org.apache.ibatis=DEBUG
## log4j.logger.org.apache.jdbc.SimpleDataSource=DEBUG
log4j.logger.org.apache.ibatis.jdbc.ScriptRunner=DEBUG
## log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapclientDelegate=DEBUG
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG
测试逆向工程
不知道是不是我的mysql驱动包太高了，出现了如下的问题：
The server time zone value '�й���ʱ��' is unrecognized or represents more than one time zone.
于是乎我就去找到了解决方案，只要在url后面加上时区就好了：
jdbc:mysql://localhost:3306/zhongfucheng?serverTimezone=UTC
随后又出现了下面的问题：
Column name pattern can not be NULL or empty
找到的解决方案，又是往后面加参数：
jdbc:mysql://localhost:3306/zhongfucheng?serverTimezone=UTC&useSSL=false&nullNamePatternMatchesAll=true
最终就成功了…
…还有问题:在刚开始的时候没注意到:Mybatis Generator 生成的mapper只有insert方法
链接:http://blog.csdn.net/qq_15127715/article/details/78139228
又去查了一大堆的资料，发现还是因为mysql的驱动包太高的问题。只能往下转了。
Failed to read candidate component class错误分析:
spring 3.2不支持1.8编译环境，解决办法就是降为1.7编译环境
解决连接:http://www.cnblogs.com/cxj20160928/p/5954336.html
编写BaseMapper
/**
* 将通用的方法抽取在BaseMapper中，那么就不用在每个单独的Mapper都要写对应的方法了。
* @param <T>
*/
public interface BaseMapper<T> {
int insert(T entity);
int insertSelective(T entity);
int deleteByPrimaryKey(String id);
T selectByPrimaryKey(String id);
int updateByPrimaryKeySelective(T entity);
int updateByPrimaryKey(T entity);
}
编写BaseService
/**
* 将通用的业务方法抽取到BaseService中，那么实现它的Service都有这些方法了。
* @param <T>
*/
public interface BaseService<T> {
int insert(T entity);
int insertSelective(T entity);
int deleteByPrimaryKey(String id);
T selectByPrimaryKey(String id);
int updateByPrimaryKeySelective(T entity);
int updateByPrimaryKey(T entity);
}
BaseServiceImpl
/**
* 使用initBaseMapper()将baseMapper实例化，service实现类是什么类型，baseMapper就是什么类型
* 将所有的Mapper都定义出来，那么子类service就可以直接使用了
* @param <T>
*/
public class BaseServiceImpl<T> implements BaseService<T> {
protected BaseMapper<T> baseMapper;
@Autowired
protected StoreHouseMapper storeHouseMapper;
@PostConstruct
private void initBaseMapper() throws Exception{
//获取泛型的信息
ParameterizedType type =(ParameterizedType) this.getClass().getGenericSuperclass();
Class clazz = (Class)type.getActualTypeArguments()[0];
//拼接成“泛型”Mapper字符串
String localField = clazz.getSimpleName().substring(0,1).toLowerCase()+clazz.getSimpleName().substring(1)+"Mapper";
//通过反射来获取成员变量的值
Field field=this.getClass().getSuperclass().getDeclaredField(localField);
Field baseField = this.getClass().getSuperclass().getDeclaredField("baseMapper");
//将baseDao来进行实例化
baseField.set(this, field.get(this));
System.out.println("------this:" + this);
System.out.println("------baseMapper:" + baseMapper);
}
public int insert(T entity) {
return baseMapper.insert(entity);
}
public int insertSelective(T entity) {
return baseMapper.insertSelective(entity);
}
public int deleteByPrimaryKey(String id) {
return baseMapper.deleteByPrimaryKey(id);
}
public T selectByPrimaryKey(String id) {
return baseMapper.selectByPrimaryKey(id);
}
public int updateByPrimaryKeySelective(T entity) {
return baseMapper.updateByPrimaryKeySelective(entity);
}
public int updateByPrimaryKey(T entity) {
return baseMapper.updateByPrimaryKey(entity);
}
}
测试Spring和Mybatis是否整合完成
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"/application-context.xml"})
public class TestSpringAndMybatis {
@Autowired
private StoreHouseService hoseService;
@Test
public void add() {
StoreHouse storeHouse = hoseService.selectByPrimaryKey("1");
System.out.println(storeHouse);
}
}
编写BaseAction
/**
* 将所有的service实现都定义出来，controller子类使用的使用就不需要定义了。
*/
public class BaseController {
@Autowired
protected StoreHouseService storeHoseService;
}
StoreHouseController
@Controller
@RequestMapping("/store")
public class StoreHouseController extends BaseController {
@RequestMapping("/getById.do")
public void getById(String id ) {
StoreHouse storeHouse = storeHoseService.selectByPrimaryKey(id);
System.out.println(storeHouse);
}
}
测试spring-mvc
在测试的时候出现了： org.apache.ibatis.binding.BindingException: Invalid bound statement (not found)的异常。
上网上查看之后，****。因此我就将StoreHouseMapper.xml放到resouces下了。
同时，我们的application-context.xml加载配置文件和generator.xml逆向配置文件的位置也要修改。
说要把生成出来的mapper.xml放在resouces目录下才能识别出来
<!--配置扫描式加载SQL映射文件,那么在mybatis配置文件中就不用加载了-->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
<!-- 所生成的sqlMap的影射文件的位置,默认资源包src -->
<sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources"/>
测试JSON
测试代码：
@RequestMapping("/getById.do")
@ResponseBody
public Object getById(String id ) {
StoreHouse storeHouse = storeHoseService.selectByPrimaryKey(id);
System.out.println(storeHouse);
return storeHouse;
}
开发环境总结
到目前为止、SSM已整合完成。
创建web常用的目录结构。
Intellij idea
Spring 3.2.2
Mybatis3.4.5
mysql 5.1.34
Tomcat 7.0
jdk1.7
花了一个晚上总结出:不能太装逼去玩新的jar包、资料太少了，非常容易出错!
想用新版本的jar包遇到了很多的麻烦
使用spring5.0与asm发生冲突，无法启动Tomcat，降为3.2.2
使用Mysql 6.0在逆向工程的时候出现时区、无法创建表的问题，经过一轮解决，最后生成的SqlMapper只有insert语句。随后降为5.1.34
使用JDK1.8有提示过时的错误，后来在pom加入一段配置解决。
在初始化Spring容器的时候，无法创建对象。Spring3.2.2与JDK1.8发生冲突。随后降为JDK1.7
在Intellij idea降JDK版本需要指定4个部分，详情可参见上面的连接。
如果文章有错的地方欢迎指正，大家互相交流。习惯在微信看技术文章，想要获取更多的Java资源的同学，可以关注微信公众号:Java3y