Ausführliche Erklärung zum Aufbau des SpringMVC+Mybatis-Projekts durch Maven-javaLernprogramm-php.cn

Vorwort

Ich war in letzter Zeit ziemlich beschäftigt, deshalb habe ich das Projekt überprüft und erstellt. Dieses Mal habe ich hauptsächlich Spring+SpringMVC+Mybatis verwendet. Die Persistenzschicht des Projekts verwendet Mybatis3, die Steuerungsschicht verwendet SpringMVC4.1, den Spring4.1-Verwaltungscontroller, der Datenbankverbindungspool verwendet Druid-Datenquellen und die Datenbank verwendet vorübergehend MySQL.

1. Datenbanktabellenstruktur und Maven-Projektstruktur

Die Datentabelle ist sehr einfach (nicht der Punkt), wie folgt:

Erstellen Sie ein Maven-Projekt. Weitere Informationen finden Sie im vorherigen Artikel zur Maven-Erstellung (http://www.php.cn/). Wählen Sie beim Erstellen eines Maven-Projekts Filter als org.apache.maven.archetypes. Nach dem Ausfüllen der relevanten Projektkoordinateninformationen lautet die Projektstruktur wie folgt:

Hinweis: Wenn kein src/main/Java, src/test/Java, src vorhanden ist /test/resources, erstellen Sie mehrere Quellen davon Ordner.

2. Ändern Sie pom.xml, um die entsprechenden Paketabhängigkeiten hinzuzufügen

Alle verwendeten Maven-Abhängigkeiten werden hier veröffentlicht und die entsprechenden Funktionen werden oben erläutert. , wie folgt:

pom.xml

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<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://www.php.cn/">  
    <modelVersion>4.0.0</modelVersion>  
    <groupId>org.andy.sm</groupId>  
    <artifactId>springmvc_mybatis_demo</artifactId>  
    <packaging>war</packaging>  
    <version>0.0.1-SNAPSHOT</version>  
  
    <name>springmvc_mybatis_demo Maven Webapp</name>  
    <url>http://www.php.cn/</url>  
  
    <properties>  
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
        <spring.version>4.1.4.RELEASE</spring.version>  
        <jackson.version>2.5.0</jackson.version>  
    </properties>  
  
    <dependencies>  
  
        <dependency>  
            <groupId>junit</groupId>  
            <artifactId>junit</artifactId>  
            <version>4.12</version>  
            <scope>test</scope>  
        </dependency>  
  
        <!-- spring -->  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-core</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <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-tx</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-webmvc</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-test</artifactId>  
            <version>${spring.version}</version>  
            <scope>test</scope>  
        </dependency>  
  
        <!-- mybatis 包 -->  
        <dependency>  
            <groupId>org.mybatis</groupId>  
            <artifactId>mybatis</artifactId>  
            <version>3.2.8</version>  
        </dependency>  
  
        <!--mybatis spring 插件 -->  
        <dependency>  
            <groupId>org.mybatis</groupId>  
            <artifactId>mybatis-spring</artifactId>  
            <version>1.2.2</version>  
        </dependency>  
  
        <!-- mysql连接 -->  
        <dependency>  
            <groupId>mysql</groupId>  
            <artifactId>mysql-connector-java</artifactId>  
            <version>5.1.34</version>  
        </dependency>  
  
        <!-- 数据源 -->  
        <dependency>  
            <groupId>com.alibaba</groupId>  
            <artifactId>druid</artifactId>  
            <version>1.0.12</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.aspectj</groupId>  
            <artifactId>aspectjweaver</artifactId>  
            <version>1.8.4</version>  
        </dependency>  
  
        <!-- log4j -->  
        <dependency>  
            <groupId>log4j</groupId>  
            <artifactId>log4j</artifactId>  
            <version>1.2.17</version>  
        </dependency>  
  
        <!-- servlet -->  
        <dependency>  
            <groupId>javax.servlet</groupId>  
            <artifactId>servlet-api</artifactId>  
            <version>3.0-alpha-1</version>  
        </dependency>  
  
        <dependency>  
            <groupId>javax.servlet</groupId>  
            <artifactId>jstl</artifactId>  
            <version>1.2</version>  
        </dependency>  
  
        <!-- json -->  
        <dependency>  
            <groupId>org.codehaus.jackson</groupId>  
            <artifactId>jackson-mapper-asl</artifactId>  
            <version>1.9.13</version>  
        </dependency>  
  
        <dependency>  
            <groupId>com.alibaba</groupId>  
            <artifactId>fastjson</artifactId>  
            <version>1.2.3</version>  
        </dependency>  
  
        <dependency>  
            <groupId>com.fasterxml.jackson.core</groupId>  
            <artifactId>jackson-annotations</artifactId>  
            <version>${jackson.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>com.fasterxml.jackson.core</groupId>  
            <artifactId>jackson-core</artifactId>  
            <version>${jackson.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>com.fasterxml.jackson.core</groupId>  
            <artifactId>jackson-databind</artifactId>  
            <version>${jackson.version}</version>  
        </dependency>  
        <!-- 文件上传 -->  
        <dependency>  
            <groupId>commons-io</groupId>  
            <artifactId>commons-io</artifactId>  
            <version>2.4</version>  
        </dependency>  
  
        <dependency>  
            <groupId>commons-fileupload</groupId>  
            <artifactId>commons-fileupload</artifactId>  
            <version>1.2.2</version>  
        </dependency>  
  
  
    </dependencies>  
  
  
    <build>  
        <finalName>springmvc_mybatis_demo</finalName>  
        <plugins>  
            <!-- Run the JUnit unit tests in an isolated classloader -->  
            <plugin>  
                <groupId>org.apache.maven.plugins</groupId>  
                <artifactId>maven-surefire-plugin</artifactId>  
                <version>2.4.2</version>  
                <configuration>  
                    <skipTests>true</skipTests>  
                </configuration>  
            </plugin>  
  
            <plugin>  
                <groupId>org.apache.maven.plugins</groupId>  
                <artifactId>maven-war-plugin</artifactId>  
                <version>2.3</version>  
                <configuration>  
                    <webXml>src/main/webapp/WEB-INF/web.xml</webXml>  
                </configuration>  
            </plugin>  
  
            <!-- generate java doc -->  
            <plugin>  
                <groupId>org.apache.maven.plugins</groupId>  
                <artifactId>maven-javadoc-plugin</artifactId>  
                <version>2.9.1</version>  
                <configuration>  
                    <javadocDirectory>target/javadoc</javadocDirectory>  
                    <reportOutputDirectory>target/javadoc</reportOutputDirectory>  
                    <charset>UTF-8</charset>  
                    <encoding>UTF-8</encoding>  
                    <docencoding>UTF-8</docencoding>  
                    <show>private</show>  
                </configuration>  
            </plugin>  
  
            <!-- 部署至本机 -->  
            <plugin>  
                <groupId>org.codehaus.cargo</groupId>  
                <artifactId>cargo-maven2-plugin</artifactId>  
                <version>1.0</version>  
                <configuration>  
                    <container>  
                        <containerId>tomcat6x</containerId>  
                        <home>D:\WebServer\apache-tomcat-6.0.39</home>  
                    </container>  
                    <configuration>  
                        <type>existing</type>  
                        <home>D:\WebServer\apache-tomcat-6.0.39</home>  
                    </configuration>  
                </configuration>  
            </plugin>  
  
        </plugins>  
  
    </build>  
</project>

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3. Verwenden Sie den Generator, um automatisch Mybatis-bezogene Informationen zu generieren Tabelleninformationen

Modell-, Mapping- und Dao-Dateien der Tabelle automatisch generieren. Weitere Informationen zur Verwendung finden Sie im Artikel http://www.php.cn/
und importieren Sie es in den Quellcode des Projekts /main/java.

Die UserInfo im generierten Modell lautet wie folgt:

UserInfo.java（其中List courseInfos手动添加的）

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package org.andy.shop.model;  
  
import java.util.List;  
  
public class UserInfo {  
    private Integer id;  
  
    private String uname;  
  
    private Integer unumber;  
  
    private List<CourseInfo> courseInfos;  
  
    public Integer getId() {  
        return id;  
    }  
  
    public void setId(Integer id) {  
        this.id = id;  
    }  
  
    public String getUname() {  
        return uname;  
    }  
  
    public void setUname(String uname) {  
        this.uname = uname == null ? null : uname.trim();  
    }  
  
    public Integer getUnumber() {  
        return unumber;  
    }  
  
    public void setUnumber(Integer unumber) {  
        this.unumber = unumber;  
    }  
  
    public List<CourseInfo> getCourseInfos() {  
        return courseInfos;  
    }  
  
}

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Dao包中的UserInfoMapper.java

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package org.andy.shop.dao;  
  
import java.util.List;  
  
import org.andy.shop.model.UserInfo;  
  
public interface UserInfoMapper {  
    int deleteByPrimaryKey(Integer id);  
  
    int insert(UserInfo record);  
  
    int insertSelective(UserInfo record);  
  
    UserInfo selectByPrimaryKey(Integer id);  
  
    int updateByPrimaryKeySelective(UserInfo record);  
  
    int updateByPrimaryKey(UserInfo record);  
      
    List<UserInfo> selectAll();  
}

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mapping 中的配置文件UserInfoMapper.xml

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<?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="org.andy.shop.dao.UserInfoMapper">  
    <resultMap id="BaseResultMap" type="org.andy.shop.model.UserInfo">  
        <id column="id" property="id" jdbcType="INTEGER" />  
        <result column="uname" property="uname" jdbcType="VARCHAR" />  
        <result column="unumber" property="unumber" jdbcType="INTEGER" />  
    </resultMap>  
    <sql id="Base_Column_List">  
        id, uname, unumber  
    </sql>  
    <select id="selectByPrimaryKey" resultMap="BaseResultMap"  
        parameterType="java.lang.Integer">  
        select  
        <include refid="Base_Column_List" />  
        from user_info  
        where id = #{id,jdbcType=INTEGER}  
    </select>  
    <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">  
        delete from  
        user_info  
        where id = #{id,jdbcType=INTEGER}  
    </delete>  
    <insert id="insert" parameterType="org.andy.shop.model.UserInfo">  
        insert into user_info (id,  
        uname, unumber  
        )  
        values (#{id,jdbcType=INTEGER},  
        #{uname,jdbcType=VARCHAR},  
        #{unumber,jdbcType=INTEGER}  
        )  
    </insert>  
    <insert id="insertSelective" parameterType="org.andy.shop.model.UserInfo">  
        insert into user_info  
        <trim prefix="(" suffix=")" suffixOverrides=",">  
            <if test="id != null">  
                id,  
            </if>  
            <if test="uname != null">  
                uname,  
            </if>  
            <if test="unumber != null">  
                unumber,  
            </if>  
        </trim>  
        <trim prefix="values (" suffix=")" suffixOverrides=",">  
            <if test="id != null">  
                #{id,jdbcType=INTEGER},  
            </if>  
            <if test="uname != null">  
                #{uname,jdbcType=VARCHAR},  
            </if>  
            <if test="unumber != null">  
                #{unumber,jdbcType=INTEGER},  
            </if>  
        </trim>  
    </insert>  
    <update id="updateByPrimaryKeySelective" parameterType="org.andy.shop.model.UserInfo">  
        update user_info  
        <set>  
            <if test="uname != null">  
                uname = #{uname,jdbcType=VARCHAR},  
            </if>  
            <if test="unumber != null">  
                unumber = #{unumber,jdbcType=INTEGER},  
            </if>  
        </set>  
        where id = #{id,jdbcType=INTEGER}  
    </update>  
    <update id="updateByPrimaryKey" parameterType="org.andy.shop.model.UserInfo">  
        update user_info  
        set uname = #{uname,jdbcType=VARCHAR},  
        unumber =  
        #{unumber,jdbcType=INTEGER}  
        where id = #{id,jdbcType=INTEGER}  
    </update>  
  
    <resultMap type="org.andy.shop.model.UserInfo" id="UserCourseMap"  
        extends="BaseResultMap">  
        <collection property="courseInfos" javaType="list"  
            ofType="org.andy.shop.model.CourseInfo">  
            <id property="id" column="course_id" jdbcType="INTEGER" />  
            <result property="cname" column="cname" jdbcType="VARCHAR" />  
            <result property="caddress" column="caddress" jdbcType="VARCHAR" />  
        </collection>  
  
  
    </resultMap>  
    <select id="selectAll" resultMap="UserCourseMap">  
        select u.id, u.uname,  
        u.unumber, c.id course_id, c.cname, c.caddress from user_info u left  
        join course_user_info cu on u.id = cu.uid  
        left join course_info c on  
        cu.cid = c.id  
    </select>  
</mapper>

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4、引入Spring并配置相关属性

在src/main/resources创建spring的配置文件，这里创建了spring.xml，信息如下：

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<?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:context="http://www.springframework.org/schema/context"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans  
            http://www.php.cn/  
            http://www.php.cn/  
            http://www.php.cn/">  
  
    <!--引入配置属性文件 -->  
    <context:property-placeholder location="classpath:config.properties" />  
  
    <!--自动扫描含有@Service将其注入为bean -->  
    <context:component-scan base-package="org.andy.shop.service" />  
  
</beans>

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5、引入Mybatis并配置数据连接池等信息

5.1、数据连接池druid配置信息

配置连接池配置信息在config.properties中，如下：

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#mysql version database druid setting  
validationQuery=SELECT 1  
jdbc.url=jdbc:mysql://localhost:3306/shop?useUnicode=true&characterEncoding=utf-8  
jdbc.username=root  
jdbc.password=12345

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5.2、配置Mybatis相关信息

以下是mybatis的配置信息：spring-mybatis.xml（ps：名字可随便起）

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<?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"  
    xsi:schemaLocation="  
        http://www.php.cn/   
        http://www.php.cn/   
        http://www.php.cn/   
        http://www.php.cn/  
        http://www.php.cn/   
        http://www.php.cn/  
        ">  
  
    <!-- 配置数据源 使用的是Druid数据源 -->  
    <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource"  
        init-method="init" destroy-method="close">  
        <property name="url" value="${jdbc.url}" />  
        <property name="username" value="${jdbc.username}" />  
        <property name="password" value="${jdbc.password}" />  
  
        <!-- 初始化连接大小 -->  
        <property name="initialSize" value="0" />  
        <!-- 连接池最大使用连接数量 -->  
        <property name="maxActive" value="20" />  
          
        <!-- 连接池最小空闲 -->  
        <property name="minIdle" value="0" />  
        <!-- 获取连接最大等待时间 -->  
        <property name="maxWait" value="60000" />  
        <property name="poolPreparedStatements" value="true" />  
        <property name="maxPoolPreparedStatementPerConnectionSize"  
            value="33" />  
        <!-- 用来检测有效sql -->  
        <property name="validationQuery" value="${validationQuery}" />  
        <property name="testOnBorrow" value="false" />  
        <property name="testOnReturn" value="false" />  
        <property name="testWhileIdle" value="true" />  
        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->  
        <property name="timeBetweenEvictionRunsMillis" value="60000" />  
        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->  
        <property name="minEvictableIdleTimeMillis" value="25200000" />  
        <!-- 打开removeAbandoned功能 -->  
        <property name="removeAbandoned" value="true" />  
        <!-- 1800秒，也就是30分钟 -->  
        <property name="removeAbandonedTimeout" value="1800" />  
        <!-- 关闭abanded连接时输出错误日志 -->  
        <property name="logAbandoned" value="true" />  
        <!-- 监控数据库 -->  
        <property name="filters" value="mergeStat" />  
    </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="mapperLocations" value="classpath:org/andy/shop/mapping/*.xml" />  
    </bean>  
  
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
        <property name="basePackage" value="org.andy.shop.dao" />  
        <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>  
  
    <!-- 注解方式配置事物 -->  
    <!-- <tx:annotation-driven transaction-manager="transactionManager" /> -->  
  
    <!-- 拦截器方式配置事物 -->  
    <tx:advice id="transactionAdvice" transaction-manager="transactionManager">  
        <tx:attributes>  
            <tx:method name="insert*" propagation="REQUIRED" />  
            <tx:method name="update*" propagation="REQUIRED" />  
            <tx:method name="delete*" propagation="REQUIRED" />  
  
            <tx:method name="get*" propagation="SUPPORTS" read-only="true" />  
            <tx:method name="find*" propagation="SUPPORTS" read-only="true" />  
            <tx:method name="select*" propagation="SUPPORTS" read-only="true" />  
  
        </tx:attributes>  
    </tx:advice>  
    <!-- Spring aop事务管理 -->  
    <aop:config>  
        <aop:pointcut id="transactionPointcut"  
            expression="execution(* org.andy.shop.service..*Impl.*(..))" />  
        <aop:advisor pointcut-ref="transactionPointcut"  
            advice-ref="transactionAdvice" />  
    </aop:config>  
  
</beans>

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主要配置数据连接池，事务管理， mybatis关联映射等，事务采用aop的声明式事务。

6、引入日志

在src/main/resources中添加log4j日志配置信息：

log4j.properties

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### set log levels ###  
log4j.rootLogger = INFO , C , D , E   
  
### console ###  
log4j.appender.C = org.apache.log4j.ConsoleAppender  
log4j.appender.C.Target = System.out  
log4j.appender.C.layout = org.apache.log4j.PatternLayout  
log4j.appender.C.layout.ConversionPattern = [springmvc_mybatis_demo][%p] [%-d{yyyy-MM-dd HH:mm:ss}] %C.%M(%L) | %m%n  
  
### log file ###  
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender  
log4j.appender.D.File = ../logs/springmvc-mybatis-demo.log  
log4j.appender.D.Append = true  
log4j.appender.D.Threshold = INFO   
log4j.appender.D.layout = org.apache.log4j.PatternLayout  
log4j.appender.D.layout.ConversionPattern = [springmvc_mybatis_demo][%p] [%-d{yyyy-MM-dd HH:mm:ss}] %C.%M(%L) | %m%n  
  
### exception ###  
log4j.appender.E = org.apache.log4j.DailyRollingFileAppender  
log4j.appender.E.File = ../logs/springmvc-mybatis-demo_error.log   
log4j.appender.E.Append = true  
log4j.appender.E.Threshold = ERROR   
log4j.appender.E.layout = org.apache.log4j.PatternLayout  
log4j.appender.E.layout.ConversionPattern = [sspringmvc_mybatis_demo][%p] [%-d{yyyy-MM-dd HH:mm:ss}] %C.%M(%L) | %m%n

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7、创建Service

在src/main/java中创建相关的org.andy.shop.service包和org.andy.shop.service.Impl包。

UserService接口：

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package org.andy.shop.service;  
  
import java.util.List;  
  
import org.andy.shop.model.UserInfo;  
  
/**   
 * 创建时间：2015-1-27 下午5:15:03   
 * @author andy   
 * @version 2.2   
 */  
  
public interface UserService {  
  
    UserInfo getUserById(int id);  
      
    List<UserInfo> getUsers();  
      
    int insert(UserInfo userInfo);  
}

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UserServiceImpl实现Service：

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package org.andy.shop.service.impl;  
  
import java.util.List;  
  
import org.andy.shop.dao.UserInfoMapper;  
import org.andy.shop.model.UserInfo;  
import org.andy.shop.service.UserService;  
import org.springframework.beans.factory.annotation.Autowired;  
import org.springframework.stereotype.Service;  
  
/** 
 * 创建时间：2015-1-27 下午5:22:59 
 *  
 * @author andy 
 * @version 2.2 
 */  
@Service("userService")  
public class UserServiceImpl implements UserService {  
  
    @Autowired  
    private UserInfoMapper userInfoMapper;  
  
    @Override  
    public UserInfo getUserById(int id) {  
        return userInfoMapper.selectByPrimaryKey(id);  
    }  
  
    @Override  
    public List<UserInfo> getUsers() {  
        return userInfoMapper.selectAll();  
    }  
  
    @Override  
    public int insert(UserInfo userInfo) {  
          
        int result = userInfoMapper.insert(userInfo);  
          
        System.out.println(result);  
        return result;  
    }  
  
}

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8、测试Spring和Mybatis配置

在src/test/java中写测试类，检测是否能够读出数据，若能读出则证明Spring+Mybatis整合成功。

TestUserService测试类：

[java] view plain copy

 
package org.andy.shop.service;  
  
import java.util.List;  
  
import org.andy.shop.model.UserInfo;  
import org.apache.log4j.Logger;  
import org.junit.Test;  
import org.junit.runner.RunWith;  
import org.springframework.beans.factory.annotation.Autowired;  
import org.springframework.test.context.ContextConfiguration;  
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;  
  
import com.alibaba.fastjson.JSON;  
  
/** 
 * 创建时间：2015-1-27 下午10:45:38 
 *  
 * @author andy 
 * @version 2.2 
 */  
@RunWith(SpringJUnit4ClassRunner.class)  
@ContextConfiguration(locations = { "classpath:spring.xml",  
        "classpath:spring-mybatis.xml" })  
public class TestUserService {  
  
    private static final Logger LOGGER = Logger  
            .getLogger(TestUserService.class);  
  
    @Autowired  
    private UserService userService;  
  
      
    @Test  
    public void testQueryById1() {  
        UserInfo userInfo = userService.getUserById(1);  
        LOGGER.info(JSON.toJSON(userInfo));  
    }  
  
    @Test  
    public void testQueryAll() {  
        List<UserInfo> userInfos = userService.getUsers();  
        LOGGER.info(JSON.toJSON(userInfos));  
    }  
  
    @Test  
    public void testInsert() {  
        UserInfo userInfo = new UserInfo();  
        userInfo.setUname("xiaoming");  
        userInfo.setUnumber(4);  
        int result = userService.insert(userInfo);  
        System.out.println(result);  
    }  
}

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若是测试成功，那证明已经成功了一半了。

9、引入SpringMVC

9.1 配置SpringMVC配置信息

SpringMVC的配置信息主要包括控制层Controller的bean管理，视图层和控制层配置等等，下面是spring-mvc.xml信息：

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<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"  
    xmlns:mvc="http://www.springframework.org/schema/mvc" 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"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans   
        http://www.php.cn/   
        http://www.php.cn/   
        http://www.php.cn/   
        http://www.php.cn/   
        http://www.php.cn/">  
  
    <!-- 自动扫描controller包下的所有类，如果@Controller注入为bean -->  
    <context:component-scan base-package="org.andy.shop.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.MappingJackson2HttpMessageConverter">  
        <property name="supportedMediaTypes">  
            <list>  
                <value>text/html;charset=UTF-8</value>  
            </list>  
        </property>  
    </bean>  
  
    <!-- 启动Spring MVC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>  
                <!-- json转换器 -->  
                <ref bean="mappingJacksonHttpMessageConverter" />  
            </list>  
        </property>  
    </bean>  
  
    <!-- 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="viewClass"  
            value="org.springframework.web.servlet.view.JstlView" />  
        <property name="prefix" value="/WEB-INF/views" />  
        <property name="suffix" value=".jsp" />  
    </bean>  
  
    <!-- 配置多文件上传 -->  
    <bean id="multipartResolver"  
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
        <property name="defaultEncoding">  
            <value>UTF-8</value>  
        </property>  
        <property name="maxUploadSize">  
            <!-- 上传文件大小限制为31M，31*1024*1024 -->  
            <value>32505856</value>  
        </property>  
        <property name="maxInMemorySize">  
            <value>4096</value>  
        </property>  
    </bean>  
  
</beans>

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自动扫描org.andy.shop.controller报下还有@Controller的控制层，注入为bean。

9.2、Web容器web.xml配置

web容器配置启动加载的配置文件，设置SpringMVC拦截的请求（此处拦截.htmls结尾的url请求）

[html] view
 plain copy
 
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://www.php.cn/"  
    id="WebApp_ID" version="2.5">  
  
    <display-name>springmvc_mybatis_demo</display-name>  
  
    <context-param>  
        <param-name>contextConfigLocation</param-name>  
        <param-value>classpath:spring.xml,classpath:spring-mybatis.xml</param-value>  
    </context-param>  
  
    <filter>  
        <filter-name>encodingFilter</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>  
        <init-param>  
            <param-name>forceEncoding</param-name>  
            <param-value>true</param-value>  
        </init-param>  
    </filter>  
    <filter-mapping>  
        <filter-name>encodingFilter</filter-name>  
        <url-pattern>/*</url-pattern>  
    </filter-mapping>  
  
    <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>  
  
    <servlet>  
        <description>spring mvc servlet</description>  
        <servlet-name>rest</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>  
    </servlet>  
    <servlet-mapping>  
        <servlet-name>rest</servlet-name>  
        <url-pattern>*.htmls</url-pattern>  
    </servlet-mapping>  
  
    <!-- 配置session超时时间，单位分钟 -->  
    <session-config>  
        <session-timeout>30</session-timeout>  
    </session-config>  
  
    <welcome-file-list>  
        <welcome-file>index.jsp</welcome-file>  
    </welcome-file-list>  
</web-app>

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9.3、Controller控制层

在org.andy.shop.controller创建控制层，如UserController.java

[java] view plain copy

package org.andy.shop.controller;  
  
import java.util.List;  
  
import org.andy.shop.model.UserInfo;  
import org.andy.shop.service.UserService;  
import org.springframework.beans.factory.annotation.Autowired;  
import org.springframework.stereotype.Controller;  
import org.springframework.ui.ModelMap;  
import org.springframework.web.bind.annotation.PathVariable;  
import org.springframework.web.bind.annotation.RequestMapping;  
import org.springframework.web.bind.annotation.ResponseBody;  
  
/**   
 * 创建时间：2015-1-28 下午1:17:27   
 * @author andy   
 * @version 2.2   
 */  
@Controller  
@RequestMapping("/user")  
public class UserController {  
  
    @Autowired  
    private UserService userService;  
      
    @RequestMapping("/showInfo/{userId}")  
    public String showUserInfo(ModelMap modelMap, @PathVariable int userId){  
        UserInfo userInfo = userService.getUserById(userId);  
        modelMap.addAttribute("userInfo", userInfo);  
        return "/user/showInfo";  
    }  
      
    @RequestMapping("/showInfos")  
    public @ResponseBody Object showUserInfos(){  
        List<UserInfo> userInfos = userService.getUsers();  
        return userInfos;  
    }  
}

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9.4、视图层

在WEB-INF创建视图总目录views(为了安全起见一般都在WEB-INF下创建)，创建/user/showInfo.jsp视图文件。

[html] view plain copy

 
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>  
  
<!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>userInfo</title>  
</head>  
<body>  
  
     姓名： ${userInfo.uname}  
  
</body>  
</html>

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9.5、项目总目录结构

到此为demo以及基本创建完成总目录如下：

10、项目测试

将项目编译，Maven build...输入clean compile package，部署到Tomcat服务器，启动项目。

测试1：测试第一个url， http://www.php.cn/:8080/springmvc_mybatis_demo/user/showInfo/1.htmls

测试2：测试第二个json数据返回的url， http://www.php.cn/:8080/springmvc_mybatis_demo/user/showInfos.htmls

ok，数据正常显示，SpringMVC+Mybatis搭建成功。

博客来源：http://www.php.cn/

源码地址：http://www.php.cn/

后续

在测试时，我们并不需要要启动web容器，junit测试时，需要以下几点注意事项：

1、测试时，将pom.xml文件中的依赖包的范围去掉

junit，spring-test，servlet-api的scope范围去掉。

2、在测试编译时，可能会把mybatis的映射配置文件.xml过滤掉，所以需要在pom.xml中添加如下配置：

[html] view plain copy

 
<resources>  
    <resource>  
        <directory>src/main/resources</directory>  
        <includes>  
            <include>**/*.properties</include>  
            <include>**/*.xml</include>  
        </includes>  
        <filtering>true</filtering>  
    </resource>  
    <resource>  
        <directory>src/main/java</directory>  
        <includes>  
            <include>**/*.xml</include>  
        </includes>  
        <filtering>true</filtering>  
    </resource>  
</resources>

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上述文件添加在节点中。

3、项目导入注意事项

下载完之后，只保留pom.xml 和 src两个文件，其他的删除。

右击“Import..” 选择maven项目导入（所以首先要将maven插件装好，maven配好），如下：

导入以后项目会出现叉号，项目是在jdk1.7基础上运行的，需要配置一下项目的环境（jdk装1.7及以上），右击该项目选择“Properties”弹出如下框：

Die oben genannten drei Felder müssen geändert werden:

1. Wählen Sie „Bibliotheken“ im Java Build Path und ändern Sie die JRE-Systembibliothek auf die installierte javase-1.7

2. JDK-Konformität in Java Compile Compiler Compliance Level auf 1.7 ändern

3. Dynamic Web Module in Project Facets auf 2.5 und höher ändern Die Version in Java wird auf 1.7 geändert

Das Obige ist das Maven-Setup für a Ausführliche Erläuterungen zum SpringMVC + Mybatis-Projekt. Weitere verwandte Inhalte finden Sie auf der chinesischen PHP-Website (www.php.cn)!