Java框架搭建-Maven、Mybatis、Spring MVC整合搭建

1. 下载eclipse

到网站下载 http://www.eclipse.org/downloads/packages/eclipse-ide-java-ee-developers/marsr

选择自己所要的版本

2. 新建Maven项目

选择File –> New –> Maven Project

可看到下面界面

点击Next，可看到下面界面，我们选择maven-archetype-webapp

点击Next，可看到。Group Id为包名，Artifact Id为项目名。这里我们输入Group Id=com.cjt, Artifact Id=MyMaven。

最后点击Finish成功创建项目

3. 项目运行前准备工作

新建项目之后，可以看到错误，这是build path与没有引入javaee包引起的。

1）设置build path

右键项目 –> Build Path  --> Configure Build Path…

然后选择Libraries

 

Maven默认是选择一个Library的，这个错误的，我们双击这个来Edit。

下面界面我们选择Alternate JRE或者Workspace default JRE。这里我们选择Alternate JRE。

2）引入javaee包

在pom.xml上引入javaee包

<!-- 导入java ee jar 包 -->  
    <dependency>  
        <groupId>javax</groupId>  
        <artifactId>javaee-api</artifactId>  
        <version>7.0</version>  
    </dependency>

4. 项目配置文件设置

1) 设置pom.xml

我们现在设置pom.xml，下载jar包，这个过程可能有点慢

Pom.xml:

<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>
  <groupId>com.cjt</groupId>
  <artifactId>MyMaven</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>TestMaven01 Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <properties>  
        <!-- spring版本号 -->  
        <spring.version>4.0.2.RELEASE</spring.version>  
        <!-- mybatis版本号 -->  
        <mybatis.version>3.2.6</mybatis.version>  
        <!-- log4j日志文件管理包版本 -->  
        <slf4j.version>1.7.7</slf4j.version>  
        <log4j.version>1.2.17</log4j.version>  
  </properties>  
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope> 
    </dependency>
    <!-- 导入java ee jar 包 -->  
    <dependency>  
        <groupId>javax</groupId>  
        <artifactId>javaee-api</artifactId>  
        <version>7.0</version>  
    </dependency>
    <!-- spring核心包 -->  
    <dependency>  
        <groupId>org.springframework</groupId>  
        <artifactId>spring-core</artifactId>  
        <version>${spring.version}</version>  
    </dependency>  

    <dependency>  
        <groupId>org.springframework</groupId>  
        <artifactId>spring-web</artifactId>  
        <version>${spring.version}</version>  
    </dependency>  
    <dependency>  
        <groupId>org.springframework</groupId>  
        <artifactId>spring-oxm</artifactId>  
        <version>${spring.version}</version>  
    </dependency>  
    <dependency>  
        <groupId>org.springframework</groupId>  
        <artifactId>spring-tx</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>${spring.version}</version>  
    </dependency>  
    <dependency>  
        <groupId>org.springframework</groupId>  
        <artifactId>spring-aop</artifactId>  
        <version>${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-test</artifactId>  
        <version>${spring.version}</version>  
    </dependency>  
    <!-- mybatis核心包 -->  
    <dependency>  
        <groupId>org.mybatis</groupId>  
        <artifactId>mybatis</artifactId>  
        <version>${mybatis.version}</version>  
    </dependency>  
    <!-- mybatis/spring包 -->  
    <dependency>  
        <groupId>org.mybatis</groupId>  
        <artifactId>mybatis-spring</artifactId>  
        <version>1.2.2</version>  
    </dependency>  
    <!-- 导入java ee jar 包 -->  
    <dependency>  
        <groupId>javax</groupId>  
        <artifactId>javaee-api</artifactId>  
        <version>7.0</version>  
    </dependency>  
    <!-- 导入Mysql数据库链接jar包 -->  
    <dependency>  
        <groupId>mysql</groupId>  
        <artifactId>mysql-connector-java</artifactId>  
        <version>5.1.30</version>  
    </dependency>  
    <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->  
    <dependency>  
        <groupId>commons-dbcp</groupId>  
        <artifactId>commons-dbcp</artifactId>  
        <version>1.2.2</version>  
    </dependency>  
    <!-- JSTL标签类 -->  
    <dependency>  
        <groupId>jstl</groupId>  
        <artifactId>jstl</artifactId>  
        <version>1.2</version>  
    </dependency>  
    <!-- 日志文件管理包 -->  
    <!-- log start -->  
    <dependency>  
        <groupId>log4j</groupId>  
        <artifactId>log4j</artifactId>  
        <version>${log4j.version}</version>  
    </dependency>  
      
      
    <!-- 格式化对象，方便输出日志 -->  
    <dependency>  
        <groupId>com.alibaba</groupId>  
        <artifactId>fastjson</artifactId>  
        <version>1.1.41</version>  
    </dependency>  


    <dependency>  
        <groupId>org.slf4j</groupId>  
        <artifactId>slf4j-api</artifactId>  
        <version>${slf4j.version}</version>  
    </dependency>  

    <dependency>  
        <groupId>org.slf4j</groupId>  
        <artifactId>slf4j-log4j12</artifactId>  
        <version>${slf4j.version}</version>  
    </dependency>  
    <!-- log end -->  
    <!-- 映入JSON -->  
    <dependency>  
        <groupId>org.codehaus.jackson</groupId>  
        <artifactId>jackson-mapper-asl</artifactId>  
        <version>1.9.13</version>  
    </dependency>  
    <!-- 上传组件包 -->  
    <dependency>  
        <groupId>commons-fileupload</groupId>  
        <artifactId>commons-fileupload</artifactId>  
        <version>1.3.1</version>  
    </dependency>  
    <dependency>  
        <groupId>commons-io</groupId>  
        <artifactId>commons-io</artifactId>  
        <version>2.4</version>  
    </dependency>  
    <dependency>  
        <groupId>commons-codec</groupId>  
        <artifactId>commons-codec</artifactId>  
        <version>1.9</version>  
    </dependency>  
      
  </dependencies>
  <build>
    <finalName>TestMaven01</finalName>
  </build>
</project>

2) 创建jdbc.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/test
username=root
password=
#定义初始连接数  
initialSize=1
#定义最大连接数  
maxActive=20
#定义最大空闲  
maxIdle=20
#定义最小空闲  
minIdle=1
#定义最长等待时间  
maxWait=60000

3) log4j.properties

### set log levels ###
#log4j.rootLogger = debug , stdout , D , E
log4j.rootLogger = debug , stdout , D

###  output to the console ###
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
#log4j.appender.stdout.layout.ConversionPattern = %d{ABSOLUTE} %5p %c{ 1 }:%L - %m%n
log4j.appender.stdout.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m%n

### Output to the log file ###
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = ${springmvc.root}/WEB-INF/logs/log.log
log4j.appender.D.Append = true
log4j.appender.D.Threshold = DEBUG 
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n

### Save exception information to separate file ###
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = ${springmvc.root}/WEB-INF/logs/error.log 
log4j.appender.D.Append = true
log4j.appender.D.Threshold = ERROR 
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n

4) 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: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-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-4.0.xsd">  
    <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->  
    <context:component-scan base-package="com.cjt.controller" />  
    <!--避免IE执行AJAX时，返回JSON出现下载文件 -->  
    <bean id="mappingJacksonHttpMessageConverter"  
        class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">  
        <property name="supportedMediaTypes">  
            <list>  
                <value>text/html;charset=UTF-8</value>  
            </list>  
        </property>  
    </bean>  
    <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->  
    <bean  
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">  
        <property name="messageConverters">  
            <list>  
                <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->  
            </list>  
        </property>  
    </bean>  
    <!-- 定义跳转的文件的前后缀 ，视图模式配置-->  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
        <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->  
        <property name="prefix" value="/WEB-INF/jsp/" />  
        <property name="suffix" value=".jsp" />  
    </bean>  
      
    <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->  
    <bean id="multipartResolver"    
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">    
        <!-- 默认编码 -->  
        <property name="defaultEncoding" value="utf-8" />    
        <!-- 文件大小最大值 -->  
        <property name="maxUploadSize" value="10485760000" />    
        <!-- 内存中的最大值 -->  
        <property name="maxInMemorySize" value="40960" />    
    </bean>   
  
</beans>

5) spring-mybatis.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: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-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-4.0.xsd">  
    <!-- 自动扫描 -->  
    <context:component-scan base-package="com.cjt.service" />  
    <!-- 引入配置文件 -->  
    <bean id="propertyConfigurer"  
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="location" value="classpath:jdbc.properties" />  
    </bean>  
  
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"  
        destroy-method="close">  
        <property name="driverClassName" value="${driver}" />  
        <property name="url" value="${url}" />  
        <property name="username" value="${username}" />  
        <property name="password" value="${password}" />  
        <!-- 初始化连接大小 -->  
        <property name="initialSize" value="${initialSize}"></property>  
        <!-- 连接池最大数量 -->  
        <property name="maxActive" value="${maxActive}"></property>  
        <!-- 连接池最大空闲 -->  
        <property name="maxIdle" value="${maxIdle}"></property>  
        <!-- 连接池最小空闲 -->  
        <property name="minIdle" value="${minIdle}"></property>  
        <!-- 获取连接最大等待时间 -->  
        <property name="maxWait" value="${maxWait}"></property>  
    </bean>  
  
    <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->  
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
        <property name="dataSource" ref="dataSource" />  
        <!-- 自动扫描mapping.xml文件 -->  
        <property name="mapperLocations" value="classpath:com/cjt/mapping/*.xml"></property>  
    </bean>  
  
    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->  
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
        <property name="basePackage" value="com.cjt.dao" />  
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>  
    </bean>  
  
    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->  
    <bean id="transactionManager"  
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource" />  
    </bean>  
  
</beans>

上面的文件都创建在resources文件夹下

5. 数据库代码自动生成

1）新建表

首先，我们新建表user_t，字段如下：

2）下载包

下载包有：mybatis-3.2.6.jar、mybatis-generator-core-1.3.3.jar、mysql-connector-java-5.1.39-bin.jar

3）运行-自动生成代码

新建一个文件夹，下面包括如下文件

generatorConfig.xml是生成代码的xml文件，内容如下：

<?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>    
<!-- 数据库驱动-->   
    <classPathEntry  location="mysql-connector-java-5.1.39-bin.jar"/>    
    <context id="DB2Tables"  targetRuntime="MyBatis3">    
        <commentGenerator>    
            <property name="suppressDate" value="true"/>    
             <!-- 是否去除自动生成的注释 true：是 ： false:否 -->    
            <property name="suppressAllComments" value="true"/>    
        </commentGenerator>    
        <!--数据库链接URL，用户名、密码 -->    
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/test" userId="root" password="">    
        </jdbcConnection>    
        <javaTypeResolver>    
            <property name="forceBigDecimals" value="false"/>    
        </javaTypeResolver>    
         <!-- 生成模型的包名和位置-->    
        <javaModelGenerator targetPackage="com.cjt.domain" targetProject="src">    
            <property name="enableSubPackages" value="true"/>    
            <property name="trimStrings" value="true"/>    
        </javaModelGenerator>    
         <!-- 生成映射文件的包名和位置-->       
        <sqlMapGenerator targetPackage="com.cjt.mapping" targetProject="src">    
            <property name="enableSubPackages" value="true"/>    
        </sqlMapGenerator>    
         <!-- 生成DAO的包名和位置--> 
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.cjt.dao" targetProject="src">    
            <property name="enableSubPackages" value="true"/>    
        </javaClientGenerator>    
        <!-- 要生成的表 tableName是数据库中的表名或视图名 domainObjectName是实体类名-->      
        <table tableName="user_t" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>  
    </context>    
</generatorConfiguration>

然后我们用cmd命令进入到新建的文件夹下面，输入：

java -jar mybatis-generator-core-1.3.3.jar -configfile generatorConfig.xml -overwrite

最后，代码生成了。

备注：代码自动生成这里通过命令行的方式，读者也可以通过eclipse的插件方式生成。

6. 代码开始

新建包，如下： （箭头的都是上面自动生成的代码）

IUserService.java

public interface IUserService {

    public User getUserById(int id);
    
}

UserServiceImpl.java

@Service
public class UserServiceImpl implements IUserService {

    @Autowired
    private IUserDao userDao;
    
    public UserServiceImpl() {
        System.out.println("UserServiceImpl");
    }
    
    public User getUserById(int id) {
        return userDao.selectByPrimaryKey(id);
    }

}

UserController.java

@Controller
@RequestMapping("/user")
public class UserController {
    
    public UserController() {
        System.out.println("UserController");
    }

    @Resource
    private IUserService userService;
    
    @RequestMapping("/showUser")
    public String toIndex(HttpServletRequest request,Model model) {
        System.out.println("UserController showUser");
        int id = Integer.parseInt(request.getParameter("id"));  
        User user = userService.getUserById(id);  
        model.addAttribute("user", user);  
        return "showUser";  
    }
    
}

在WEB-INF下新建一个目录jsp，下面新建文件showUser.jsp

showUser.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8" import="java.util.*,com.cjt.domain.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
 ${user.userName}
</body>
</html>

最后，附上web.xml

<?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_3_0.xsd"  
    version="3.0">  
    <display-name>Archetype Created Web Application</display-name>  
    <!-- Spring和mybatis的配置文件 -->  
    <context-param>  
        <param-name>contextConfigLocation</param-name>  
        <param-value>classpath:spring-mybatis.xml</param-value>  
    </context-param>  
    <!-- 编码过滤器 -->  
    <filter>  
        <filter-name>encodingFilter</filter-name>  
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>  
        <async-supported>true</async-supported>  
        <init-param>  
            <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>  
    <!-- Spring监听器 -->  
    <listener>  
        <listener-class>org.springframework.web.context.ContextLoaderListener</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>  
        <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>  
        <load-on-startup>1</load-on-startup>  
        <async-supported>true</async-supported>  
    </servlet>  
    <servlet-mapping>  
        <servlet-name>SpringMVC</servlet-name>  
        <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 -->  
        <url-pattern>/</url-pattern>  
    </servlet-mapping>  
    <welcome-file-list>  
        <welcome-file>/index.jsp</welcome-file>  
    </welcome-file-list>  
  
</web-app>

上面，代码生成完成了。

可以下载项目：

https://github.com/cjt321/MavenSpirngmvcMybatis

下载自动生成包：

https://pan.baidu.com/s/1mhECTvi

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