整合Spring+SpringMVC+Mybatis+Maven+Mysql
Spring+SpringMVC+Mybatis+Maven+Mysql
一、建立Maven專案
建立完成此時的包結構目錄:
此時在WEB-INF下已經有一個log4j.xml配置檔案,檢視此檔案內容可以看到已經自動對log4j進行了一些基本配置。不過這裡我們採用log4j.properties方式來配置log4j。log4j相關用法參考另一篇部落格:log4j的知識點以及相關報錯問題解決辦法。
本專案的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>MistraRSSSMMM</name>
<groupId> com.sm</groupId>
<artifactId>MistraRSSSMMM</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<file.encoding>UTF-8</file.encoding>
<spring.version>3.2.0.RELEASE</spring.version>
<mysql.version>5.1.29</mysql.version >
<servlet.version>3.0-alpha-1</servlet.version>
<aspectj.version>1.8.1</aspectj.version>
<commons-codec.version>1.9</commons-codec.version>
<commons-dbcp.version>1.4</commons-dbcp.version>
<jetty.version>8.1.8.v20121106</jetty.version>
<slf4j.version>1.7.5</slf4j.version>
<testng.version>6.8.7</testng.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat6-maven-plugin</artifactId>
<version>2.1</version>
<configuration>
<url>http://localhost:8080/manager</url>
<server>Tomcat6</server>
<port>8080</port>
<path>/mistrasssmmm</path>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.17</version>
<configuration>
<parallel>methods</parallel>
<threadCount>10</threadCount>
</configuration>
</plugin>
<!-- mybatisn逆向工程外掛 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<!--配置檔案的位置-->
<configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
<executions>
<execution>
<id>Generate MyBatis Artifacts</id>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
<dependencies>
<!-- 依賴的spring 類庫-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<!-- mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<!-- mybatis核心 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>org.apache.ibatis</groupId>
<artifactId>ibatis-sqlmap</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>org.apache.ibatis</groupId>
<artifactId>ibatis-core</artifactId>
<version>3.0</version>
</dependency>
<!--依賴的連線池類庫-->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!--依賴的資料庫驅動類-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!--log4j-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!--jstl-->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.11</version>
</dependency>
<!--依賴的測試類庫-->
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>${testng.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-clean-plugin</artifactId>
<version>2.5</version>
</dependency>
</dependencies>
</project>
各個包的版本真的很重要,有時候一個包版本不匹配就會報些奇怪的錯誤,要是想使用不同版本的包就只能自己慢慢調了。
建立好相應的包結構:
建立資料庫:建立一張有:使用者名稱、密碼欄位的user表就好了。
二、整合
1、在src/main/resources下建立jdbc.properties和log4j.properties
jdbc.properties
db.driver=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/ssmintroduction?useUnicode=true&characterEncoding=utf8
db.username=root
db.password=123456
log4j.properties
# Global logging configuration
log4j.rootLogger=DEBUG,out
# Console output...
log4j.appender.out=org.apache.log4j.ConsoleAppender
log4j.appender.out.layout=org.apache.log4j.PatternLayout
log4j.appender.out.layout.ConversionPattern=%d{HH:mm:ss} %-5p [%F\:%L] -- %m%n
log4j.logger.org.apache=INFO
2、在src/main/resources下建立generatorConfig.xml
在pom.xml裡面已經加入了mybatis-generator-maven-plugin外掛。運用Mybatis逆向工程生成對映類mapper.java、po、mapper.xml檔案到對應的包。相關部落格:Mybatis逆向工程Generator。這裡踩了坑。在maven裡面使用這個外掛有個痛點就是每次啟動Tomcat的時候這個外掛都會執行一次,生成相應的檔案。po類等檔案都能覆蓋掉,但是不會覆蓋*.xml檔案。相當於把裡面的程式碼copy了一次追加在後面。
這時候啟動就會報錯:java.lang.IllegalArgumentException: Result Maps collection already contains value for com.sm.mapper.UserMapper.BaseResultMap
網上有相關部落格和解決辦法:
mybatis-generator重新生成程式碼時的SQL對映檔案覆蓋
Mybatis code generator1.3.4版本 XML 檔案重新生成不會覆蓋原檔案
我這裡是建立好依賴,寫好配置檔案generatorConfig.xml之後,在Maven-Projects裡面手動執行了一次mybatis-generator:generate,生成相應檔案之後我就把pom.xml裡面的gengerator依賴註釋掉了。相當於就用一次,這裡寫demo倒是無關緊要。推薦還是自己寫個逆向工程的工具專案,這樣有需要就跑一次,copy過來就好了。
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>
<!-- 指定資料庫連線驅動地址 -->
<classPathEntry location="D:\jarPackage\mysqlforjdbc\mysql-connector-java-5.1.7-bin.jar" />
<!-- 一個數據庫一個 context -->
<context id="testTables" targetRuntime="MyBatis3">
<commentGenerator>
<!-- 將不會向任何生成的元素添加註釋 -->
<property name="suppressAllComments" value="true"/>
<property name="suppressDate" value ="true"/>
</commentGenerator>
<!--資料庫連線的資訊:驅動類、連線地址、使用者名稱、密碼 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost/ssmintroduction" userId="root" password="123456">
</jdbcConnection>
<!-- 預設false,把JDBC DECIMAL 和 NUMERIC 型別解析為 Integer,為 true時把JDBC DECIMAL 和
NUMERIC 型別解析為java.math.BigDecimal -->
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!-- targetProject:生成PO類的位置 -->
<javaModelGenerator targetPackage="com.sm.po" targetProject="src/main/java">
<!-- enableSubPackages:是否讓schema作為包的字尾 -->
<property name="enableSubPackages" value="false" />
<!-- 從資料庫返回的值被清理前後的空格 -->
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- targetProject:mapper.xml對映檔案生成的位置 -->
<sqlMapGenerator targetPackage="com.sm.mapper" targetProject="src/main/resources">
<!-- enableSubPackages:是否讓schema作為包的字尾 -->
<property name="enableSubPackages" value="false" />
</sqlMapGenerator>
<!-- targetPackage:mapper介面生成的位置 -->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.sm.mapper" targetProject="src/main/java">
<!-- enableSubPackages:是否讓schema作為包的字尾 -->
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<!-- 指定資料庫表 -->
<table tableName="user" domainObjectName="User"></table>
<!-- 有些表的欄位需要指定java型別
<table schema="" tableName="">
<columnOverride column="" javaType="" />
</table> -->
</context>
</generatorConfiguration>
這裡有個坑爹的地方就是要自己指定本地的資料庫連線驅動jar包,配置中的< classPathEntry / >標籤。
上面配置的輸出檔案的位置很重要,mapper.xml一定要輸出在resources下面,並且包結構要和UserMapper.java所在包結構一樣。
雙擊:
就會發現指定包下已經生成了User.java等檔案:
3、開發controller、service、serviceImpl
UserService.java
package com.sm.service;
import com.sm.po.User;
/**
* Created by Mistra.WR on 2017/11/10/010.
*/
public interface UserService {
int insertSelective(User user);
}
UserServiceImpl.java
package com.sm.serviceimpl;
import com.sm.mapper.UserMapper;
import com.sm.po.User;
import com.sm.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* Created by Mistra.WR on 2017/11/10/010.
*/
@Service
public class UserServiceImpl implements UserService{
@Autowired
private UserMapper userMapperDao;
public int insertSelective(User user) {
return userMapperDao.insertSelective(user);
}
}
UserAddController.java
package com.sm.controller;
import com.sm.po.User;
import com.sm.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* Created by Mistra.WR on 2017/11/10/010.
*/
@Controller
@RequestMapping("/userAdd")
public class UserAddController {
@Autowired
private UserService userService;
@RequestMapping("/index.do")
public String addPage(){
return "addUser";
}
@RequestMapping("/userAdd.do")
public String UserAdd(User user, Model model){
if(userService.insertSelective(user)>0){
model.addAttribute("successMsg", "註冊成功!");
model.addAttribute("name", user.getUsername());
return "success";//返回的頁面
}else{
model.addAttribute("failMsg", "註冊失敗!");
return "fail";
}
}
}
4、在src/main/resources下建立mybatis的配置檔案mybatis-config.xml
這個配置檔案相當於用來給實體類定義別名。
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>
<typeAliases>
<typeAlias alias="user" type="com.sm.po.User"/>
</typeAliases>
</configuration>
5、在src/main/resources下建立spring-mybatis.xml
spring和mybatis整合的重要檔案。
<?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:p="http://www.springframework.org/schema/p"
xmlns:c="http://www.springframework.org/schema/c"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:ehcache="http://www.springmodules.org/schema/ehcache"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springmodules.org/schema/ehcache http://www.springmodules.org/schema/cache/springmodules-ehcache.xsd">
<!--引入屬性檔案-->
<context:property-placeholder location="classpath:jdbc.properties" />
<!-- 配置資料來源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${db.driver}" />
<property name="url" value="${db.url}" />
<property name="username" value="${db.username}" />
<property name="password" value="${db.password}" />
</bean>
<!-- myBatis檔案 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自動掃描entity目錄, 省掉Configuration.xml裡的手工配置 -->
<property name="configLocation" value="classpath:mybatis-config.xml" />
<property name="mapperLocations" value="classpath*:com/sm/mapper/*.xml" />
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.sm.mapper" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
<!-- 配置事務管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 配置事物的註解方式注入 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg index="0" ref="sqlSessionFactory" />
<constructor-arg index="1" value="BATCH" />
</bean>
</beans>
6、在src/main/resources下建立spring-mvc.xml
<?xml version="1.0" encoding="utf-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p" 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" xmlns:util="http://www.springframework.org/schema/util"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
">
<!-- Enables the Spring MVC @Controller programming model -->
<mvc:annotation-driven />
<!-- 掃描serviceimpl -->
<context:component-scan base-package="com.sm.serviceimpl" />
<!-- 為controller加上自動代理 -->
<aop:aspectj-autoproxy proxy-target-class="true" />
<!-- controller包(自動注入) -->
<context:component-scan base-package="com.sm.controller" />
<!-- **********開啟註解***********
spring3.1之前DefaultAnnotionHandlerMapping AnnotionMethodHandlerAdapter
spring3.1之後RequestMappingHandlerMapping RequestMappingHandlerAdapter -->
<!-- 啟動Spring MVC 的註解功能,完成請求和註解POJO的對映 即啟用@RequestMapping -->
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="mappingJacksonHttpMessageConverter" />
</list>
</property>
</bean>
<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
</bean>
<!-- 檢視解析器對模型檢視名稱的解析,即在模型檢視名稱新增前後綴 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
<property name="order" value="10"/>
</bean>
</beans>
5、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-mybatis的配置檔案 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mybatis.xml</param-value>
</context-param>
<!-- log4j的配置檔案 -->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:log4j.properties</param-value>
</context-param>
<listener>
<description>spring監聽器</description>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<description>log4j監聽器</description>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
<!-- 防止spring記憶體溢位監聽器 -->
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<!-- spring mvc servlet -->
<servlet>
<description>spring mvc servlet</description>
<servlet-name>springMvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<description>spring mvc 配置檔案</description>
<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>springMvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<filter>
<description>字符集過濾器</description&