整合Spring+SpringMVC+Mybatis+Maven+Mysql

其他 2018-05-19 13:51:24 阅读次数: 9

Spring+SpringMVC+Mybatis+Maven+Mysql

一、创建Maven项目

详情见博客：IntelliJ IDEA 创建Maven 工程

创建完成此时的包结构目录：

这里写图片描述

此时在WEB-INF下已经有一个log4j.xml配置文件，查看此文件内容可以看到已经自动对log4j进行了一些基本配置。不过这里我们采用log4j.properties方式来配置log4j。log4j相关用法参考另一篇博客：log4j的知识点以及相关报错问题解决办法。

本项目的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逆向工程插件 -->
      <plugin>
        <groupId>org.mybatis.generator</groupId>
        <artifactId>mybatis-generator-maven-plugin</artifactId>
        <version>1.3.2</version>
        <configuration>
          <!--配置文件的位置-->
          <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>
    <!-- 依赖的spring 类库-->
    <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>
    <!--依赖的连接池类库-->
    <dependency>
      <groupId>commons-dbcp</groupId>
      <artifactId>commons-dbcp</artifactId>
      <version>1.4</version>
    </dependency>
    <!--依赖的数据库驱动类-->
    <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>
    <!--依赖的测试类库-->
    <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>

各个包的版本真的很重要，有时候一个包版本不匹配就会报些奇怪的错误，要是想使用不同版本的包就只能自己慢慢调了。

创建好相应的包结构：

这里写图片描述

创建数据库：创建一张有：用户名、密码字段的user表就好了。

二、整合

1、在src/main/resources下创建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

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# 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下创建generatorConfig.xml

在pom.xml里面已经加入了mybatis-generator-maven-plugin插件。运用Mybatis逆向工程生成映射类mapper.java、po、mapper.xml文件到对应的包。相关博客：Mybatis逆向工程Generator。这里踩了坑。在maven里面使用这个插件有个痛点就是每次启动Tomcat的时候这个插件都会执行一次，生成相应的文件。po类等文件都能覆盖掉，但是不会覆盖*.xml文件。相当于把里面的代码copy了一次追加在后面。

这里写图片描述

这时候启动就会报错：java.lang.IllegalArgumentException: Result Maps collection already contains value for com.sm.mapper.UserMapper.BaseResultMap
网上有相关博客和解决办法：
mybatis-generator重新生成代码时的SQL映射文件覆盖
Mybatis code generator1.3.4版本 XML 文件重新生成不会覆盖原文件
我这里是创建好依赖，写好配置文件generatorConfig.xml之后，在Maven-Projects里面手动执行了一次mybatis-generator:generate，生成相应文件之后我就把pom.xml里面的gengerator依赖注释掉了。相当于就用一次，这里写demo倒是无关紧要。推荐还是自己写个逆向工程的工具项目，这样有需要就跑一次，copy过来就好了。

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>

    <!-- 指定数据库连接驱动地址 -->
    <classPathEntry location="D:\jarPackage\mysqlforjdbc\mysql-connector-java-5.1.7-bin.jar" />

    <!-- 一个数据库一个 context -->
    <context id="testTables" targetRuntime="MyBatis3">
        <commentGenerator>
            <!-- 将不会向任何生成的元素添加注释 -->
            <property name="suppressAllComments" value="true"/>
            <property name="suppressDate" value ="true"/>
        </commentGenerator>
        <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost/ssmintroduction" userId="root" password="123456">
        </jdbcConnection>

        <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和
            NUMERIC 类型解析为java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- targetProject:生成PO类的位置 -->
        <javaModelGenerator targetPackage="com.sm.po" targetProject="src/main/java">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
            <!-- 从数据库返回的值被清理前后的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- targetProject:mapper.xml映射文件生成的位置 -->
        <sqlMapGenerator targetPackage="com.sm.mapper" targetProject="src/main/resources">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- targetPackage：mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.sm.mapper" targetProject="src/main/java">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <!-- 指定数据库表 -->
        <table tableName="user" domainObjectName="User"></table>

        <!-- 有些表的字段需要指定java类型
         <table schema="" tableName="">
            <columnOverride column="" javaType="" />
        </table> -->
    </context>
</generatorConfiguration>

这里有个坑爹的地方就是要自己指定本地的数据库连接驱动jar包，配置中的< classPathEntry / >标签。
上面配置的输出文件的位置很重要，mapper.xml一定要输出在resources下面，并且包结构要和UserMapper.java所在包结构一样。
双击：

这里写图片描述

就会发现指定包下已经生成了User.java等文件：

这里写图片描述

3、开发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", "注册成功！");
            model.addAttribute("name", user.getUsername());
            return "success";//返回的页面
        }else{
            model.addAttribute("failMsg", "注册失败！");
            return "fail";
        }
    }
}

4、在src/main/resources下创建mybatis的配置文件mybatis-config.xml

这个配置文件相当于用来给实体类定义别名。

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下创建spring-mybatis.xml

spring和mybatis整合的重要文件。

<?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: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">

    <!--引入属性文件-->
    <context:property-placeholder location="classpath:jdbc.properties" />

    <!-- 配置数据源 -->
    <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文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->
        <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>
    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <!-- 配置事物的注解方式注入 -->
    <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下创建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 />
    <!-- 扫描serviceimpl -->
    <context:component-scan base-package="com.sm.serviceimpl" />
    <!-- 为controller加上自动代理 -->
    <aop:aspectj-autoproxy proxy-target-class="true" />
    <!-- controller包(自动注入) -->
    <context:component-scan base-package="com.sm.controller" />

    <!-- **********开启注解***********
    spring3.1之前DefaultAnnotionHandlerMapping AnnotionMethodHandlerAdapter
    spring3.1之后RequestMappingHandlerMapping RequestMappingHandlerAdapter -->
    <!-- 启动Spring MVC 的注解功能,完成请求和注解POJO的映射 即启用@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>

    <!-- 视图解析器对模型视图名称的解析,即在模型视图名称添加前后缀 -->
    <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的配置文件 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring-mybatis.xml</param-value>
  </context-param>
  <!-- log4j的配置文件 -->
  <context-param>
    <param-name>log4jConfigLocation</param-name>
    <param-value>classpath:log4j.properties</param-value>
  </context-param>
  <listener>
    <description>spring监听器</description>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <listener>
    <description>log4j监听器</description>
    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
  </listener>
  <!-- 防止spring内存溢出监听器 -->
  <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 配置文件</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>字符集过滤器</description>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <description>字符集编码</description>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <!-- 配置session超时时间，单位分钟 -->
  <session-config>
    <session-timeout>60</session-timeout>
  </session-config>

  <!-- DEFAULT PAGE -->
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

6、jsp

addUser.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
    <head>
        <title>添加用户</title>
    </head>
    <body>
        <c:if test="${!empty error}">
            <font color="red"><c:out value="${error}" /></font>
        </c:if>
        <form action="<c:url value="userAdd.do"/>" method="post">
            用户名：
            <input type="text" name="username">
            <br>
            密 码：
            <input type="password" name="password">
            <br>
            <input type="submit" value="注册" />
            <input type="reset" value="重置" />
        </form>
    </body>
</html>

success.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
</head>
<body>
    <h1>注册成功</h1>
</body>
</html>

代码完成时的包结构：

这里写图片描述

三、测试

跑起来！

这里写图片描述
输入请求地址：http://localhost:8080/mistrasssmmm/userAdd/index.do

这里写图片描述

返回success.jsp

这里写图片描述

数据插入完成

这里写图片描述

此实例
GitHub地址：MistraR/MistraRSSSMMM
CSDN：CSDN下载地址
欢迎一起交流学习！

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