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IDEA 2017 整合SSM框架(使用Maven创建工程)

标签:
Java SSM

       SSM框架(Spring+SpringMVC+MyBatis)是目前Java WEB开发使用较多的框架,搭建起来起来比较麻烦,之前也曾搭建成功过。这次通过结合SSM开发的相关学习视频,再一次系统性的将整个SSM框架的搭建过程记录下来,以此来方便日后的开发。本文的前提条件,是Maven已经成功安装完毕!

     搭建环境:

 IDEA  2017.1
 Maven 3.3.9
 Jdk  1.7
 Tomcat 7.0
 Mysql 5.7

1、建立Maven Project

(1)新建一个Maven项目

 

https://img1.sycdn.imooc.com//5c206e900001e6c905000342.jpg

(2)输入GroupId和ArtifactId,可随意输入,GroupId可认为是项目的包名,ArtifactId为项目的名称

https://img1.sycdn.imooc.com//5c206eb1000124b205000344.jpg

 

(3) 找到Maven安装的Home,关于Maven使用的镜像仓库是在Setting.xml中可修改的,这里注意下选择的Setting.xml的存放位置

https://img1.sycdn.imooc.com//5c206eca0001be2a05000344.jpg

(4)完成

https://img1.sycdn.imooc.com//5c206ede0001aad905000315.jpg

(5)查看IDEA Console中Maven项目是否建立成功

[INFO] ----------------------------------------------------------------------------
[INFO] Using following parameters for creating project from 
Archetype: maven-archetype-webapp:RELEASE
[INFO] ----------------------------------------------------------------------------
[INFO] Parameter: groupId, Value: com.test
[INFO] Parameter: artifactId, Value: test
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: package, Value: com.test
[INFO] Parameter: packageInPathFormat, Value: com/test
[INFO] Parameter: package, Value: com.test
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: groupId, Value: com.test
[INFO] Parameter: artifactId, Value: test
[INFO] Project created from Archetype in dir: 
C:\Users\Administrator\AppData\Local\Temp\archetypetmp\test
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 13.736 s
[INFO] Finished at: 2018-12-13T11:13:40+08:00
[INFO] Final Memory: 14M/150M
[INFO] ------------------------------------------------------------------------
[INFO] Maven execution finished

(6)建立好的Maven项目树状结构图

https://img1.sycdn.imooc.com//5c206ef00001c0ad03460243.jpg

2、整合SSM框架

(1)在Pom.xml中添加Spring、SpringMVC、MyBatis相关jar

<!--属性中,配置使用的Spring和mybatis版本号-->
<properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  <maven.compiler.source>1.7</maven.compiler.source>
  <maven.compiler.target>1.7</maven.compiler.target>
  <!--配置spring和mybatis的版本号-->
  <spring.version>3.2.0.RELEASE</spring.version>
  <mybatis.version>3.2.7</mybatis.version>
</properties>
<!--第一部分:Spring配置-->
<!--Spring Core-->
<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>${spring.version}</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context-support</artifactId>
  <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId>
    <version>${spring.version}</version>
</dependency>
<!--Spring整合Mybatis的jar-->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jdbc</artifactId>
  <version>${spring.version}</version>
</dependency>
<!--Spring Mvc-->
<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-test</artifactId>
  <version>${spring.version}</version>
</dependency>
<!--第二部分 MyBatis -->
<dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis</artifactId>
  <version>${mybatis.version}</version>
</dependency>
<!-- mybatis-spring整合包 -->
<dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis-spring</artifactId>
  <version>1.2.2</version>
</dependency>
<!--第三部分:Servlet Web-->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.0.1</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>javax.servlet.jsp</groupId>
    <artifactId>jsp-api</artifactId>
    <version>2.2</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>
<dependency>
    <groupId>taglibs</groupId>
    <artifactId>standard</artifactId>
    <version>1.1.2</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.9.4</version>
</dependency>
<!-- 第四部分 数据库的连接 -->
<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>5.1.39</version>
</dependency>
<!-- 数据库连接池 -->
<dependency>
  <groupId>commons-dbcp</groupId>
  <artifactId>commons-dbcp</artifactId>
  <version>1.2.2</version>
</dependency>
<dependency>
  <groupId>commons-pool</groupId>
  <artifactId>commons-pool</artifactId>
  <version>1.3</version>
</dependency>
<!--第五部分:其他如日志、单元测试等-->
<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-classic</artifactId>
  <version>1.1.1</version>
</dependency>
<!--单元测试-->
<dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
  <version>4.11</version>
  <scope>test</scope>
</dependency>

(2)在main/,新建java、resources文件夹,分别设为Sources Root和Resources Root,java主要是用来存放业务逻辑代码,resources主要是存放相关配置文件。

https://img1.sycdn.imooc.com//5c206f170001195503100297.jpg

https://img1.sycdn.imooc.com//5c206f170001820303770241.jpg

(3)在resources/,新建db.properties和log4j.properties,主要用于存放数据库的连接配置信息和日志配置信息。

db.properties:

jdbc.driver=com.mysql.jdbc.Driver  //使用的是mysql jdbc驱动
jdbc.url=jdbc:mysql://localhost:3306/database  //url、port、database
jdbc.username=root              //账号
jdbc.password=123456           //密码

log4j.properties:

#Global logging 
configuration\uff0c\u5efa\u8bae\u5f00\u53d1\u73af\u5883\u4e2d\u8981\u7528debug
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

(4) 在mybatis/,创建mybatis整合需要的配置文件sqlMapConfig.xml

<!-- 配置别名 -->
<typeAliases>
   <!-- 批量扫描别名 -->
   <package name="cn.ssm.test.po"/>
</typeAliases>


注:由于使用spring和mybatis的整合包进行mapper扫描,这里不需要进行mapper配置了。但必须遵循:mapper.xml和mapper.java文件同名且在一个目录。

 

(5) 在spring/,创建spring整合需要的配置文件applicationContext.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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop" 
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!--第一部分:DAO层配置(Spring整合Mybatis)-->
    <!-- 加载properties文件中的内容,properties中的key要有一定的特殊命名规则-->
    <context:property-placeholder location="classpath:db.properties"/>
    <!--配置数据源,dbcp-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" 
    destroy-method="close">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="maxActive" value="30"/>
        <property name="maxIdle"   value="5"/>
    </bean>
    <!--Spring整合Mybatis配置-->
    <!--SqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
      <!--数据库连接池-->
      <property name="dataSource" ref="dataSource"/>
      <!--读取mybatis配置文件-->
      <property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml"/>
    </bean>
    <!--Mapper扫描器-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--如需扫描多个包,中间用逗号隔开-->
        <property name="basePackage" value="cn.ssm.test.mapper"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>
    <!--第二部分:Service层配置-->
    <bean id="itemsService" class="cn.ssm.test.service.impl.ItemsServiceImpl"/>
    <!--第三部分:事务管理器-->
    <!-- 事务管理器
   对mybatis操作数据库事务控制,spring使用jdbc的事务控制类
-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.
     DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!-- 通知 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
         <!-- 传播行为 -->
          <tx:method name="save*" propagation="REQUIRED"/>
          <tx:method name="delete*" propagation="REQUIRED"/>
          <tx:method name="insert*" propagation="REQUIRED"/>
          <tx:method name="update*" propagation="REQUIRED"/>
          <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
          <tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
          <tx:method name="select*" propagation="SUPPORTS" read-only="true"/>
        </tx:attributes>
    </tx:advice>
    <!-- aop -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" 
        pointcut="execution(* cn.ssm.test.service.impl.*.*(..))"/>
    </aop:config>
</beans>

(6) 在spring/,创建springmvc.xml,配置注解映射器、注解适配器、视图解析器等

<?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:util="http://www.springframework.org/schema/util"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/util
    http://www.springframework.org/schema/util/spring-util.xsd 
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context.xsd">
    <!--可以扫描controller、service等包-->
      <context:component-scan base-package="cn.ssm.test.controller"/>
    <!--使用 mvc:annotation-driven代替上边注解映射器和注解适配器配置
    mvc:annotation-driven默认加载很多的参数绑定方法,比如json转换解析器就默认加载了,
     如果使用mvc:annotation-driven不用配置上边的RequestMappingHandlerMapping和
     RequestMappingHandlerAdapter,实际开发时使用mvc:annotation-driven-->
      <mvc:annotation-driven conversion-service="conversionService"/>
    <!--视图解析器-->
        <bean class="org.springframework.web.servlet.view.
        InternalResourceViewResolver">
            <!--配置前缀-->
            <property name="prefix" value="/WEB-INF/jsp/"/>
            <!--配置后缀-->
            <property name="suffix" value=".jsp"/>
      </bean>
     <!--自定义参数-->
      <bean id="conversionService" class="org.springframework.format.support.
      FormattingConversionServiceFactoryBean">
         <!--转换器-->
        <property name="converters">
          <util:list list-class="java.util.ArrayList">
            <bean class="cn.ssm.test.controller.converter.
            CustomDateConverter"/>
          </util:list>
        </property>
      </bean>
  </beans>

(7) 创建逆向工程,自动生成po及mapper文件

  Po文件主要生成的是数据库表的字段定义,相关字段的Get和Set方法。

  mapper文件主要生成的是数据库表中一般字段的查询接口及相关xml文件等。

 po对象:

public class Items {
    private Integer id;
    private String name;
    private Float price;
    private String pic;
    private Date createtime;
    private String detail;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name == null ? null : name.trim();
    }
    public Float getPrice() {
        return price;
    }
    public void setPrice(Float price) {
        this.price = price;
    }
    public String getPic() {
        return pic;
    }
    public void setPic(String pic) {
        this.pic = pic == null ? null : pic.trim();
    }
    public Date getCreatetime() {
        return createtime;
    }
    public void setCreatetime(Date createtime) {
        this.createtime = createtime;
    }
    public String getDetail() {
        return detail;
    }
    public void setDetail(String detail) {
        this.detail = detail == null ? null : detail.trim();
    }
}

Mapper:

mapper接口类:

public interface ItemsMapper {
    int countByExample(ItemsExample example);
    int deleteByExample(ItemsExample example);
    int deleteByPrimaryKey(Integer id);
    int insert(Items record);
    int insertSelective(Items record);
    List<Items> selectByExampleWithBLOBs(ItemsExample example);
    List<Items> selectByExample(ItemsExample example);
    Items selectByPrimaryKey(Integer id);
    int updateByExampleSelective(@Param("record") Items record, 
    @Param("example") ItemsExample example);
    int updateByExampleWithBLOBs(@Param("record") Items record, 
    @Param("example") ItemsExample example);
    int updateByExample(@Param("record") Items record, 
    @Param("example") ItemsExample example);
    int updateByPrimaryKeySelective(Items record);
    int updateByPrimaryKeyWithBLOBs(Items record);
    int updateByPrimaryKey(Items record);
}

Mapper xml文件:

<?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="cn.ssm.test.mapper.ItemsMapper" >
  <resultMap id="BaseResultMap" type="cn.ssm.test.po.Items" >
    <id column="id" property="id" jdbcType="INTEGER" />
    <result column="name" property="name" jdbcType="VARCHAR" />
    <result column="price" property="price" jdbcType="REAL" />
    <result column="pic" property="pic" jdbcType="VARCHAR" />
    <result column="createtime" property="createtime" jdbcType="TIMESTAMP" />
  </resultMap>
  <resultMap id="ResultMapWithBLOBs" type="cn.ssm.test.po.Items" 
  extends="BaseResultMap" >
    <result column="detail" property="detail" jdbcType="LONGVARCHAR" />
  </resultMap>
  <sql id="Example_Where_Clause" >
    <where >
      <foreach collection="oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} 
                  and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" 
                  item="listItem" open="(" close=")" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Update_By_Example_Where_Clause" >
    <where >
      <foreach collection="example.oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} 
                  and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" 
                  item="listItem" open="(" close=")" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List" >
    id, name, price, pic, createtime
  </sql>
  <sql id="Blob_Column_List" >
    detail
  </sql>
  <select id="selectByExampleWithBLOBs" resultMap="ResultMapWithBLOBs" 
  parameterType="cn.ssm.test.po.ItemsExample" >
    select
    <if test="distinct" >
      distinct
    </if>
    <include refid="Base_Column_List" />
    ,
    <include refid="Blob_Column_List" />
    from items
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null" >
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByExample" resultMap="BaseResultMap" 
  parameterType="cn.ssm.test.po.ItemsExample" >
    select
    <if test="distinct" >
      distinct
    </if>
    <include refid="Base_Column_List" />
    from items
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null" >
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" resultMap="ResultMapWithBLOBs" 
  parameterType="java.lang.Integer" >
    select 
    <include refid="Base_Column_List" />
    ,
    <include refid="Blob_Column_List" />
    from items
    where id = #{id,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from items
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <delete id="deleteByExample" parameterType="cn.ssm.test.po.ItemsExample" >
    delete from items
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="cn.ssm.test.po.Items" >
    insert into items (id, name, price, 
      pic, createtime, detail
      )
    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, 
    #{price,jdbcType=REAL}, 
      #{pic,jdbcType=VARCHAR}, #{createtime,jdbcType=TIMESTAMP}, 
      #{detail,jdbcType=LONGVARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="cn.ssm.test.po.Items" >
    insert into items
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        id,
      </if>
      <if test="name != null" >
        name,
      </if>
      <if test="price != null" >
        price,
      </if>
      <if test="pic != null" >
        pic,
      </if>
      <if test="createtime != null" >
        createtime,
      </if>
      <if test="detail != null" >
        detail,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        #{id,jdbcType=INTEGER},
      </if>
      <if test="name != null" >
        #{name,jdbcType=VARCHAR},
      </if>
      <if test="price != null" >
        #{price,jdbcType=REAL},
      </if>
      <if test="pic != null" >
        #{pic,jdbcType=VARCHAR},
      </if>
      <if test="createtime != null" >
        #{createtime,jdbcType=TIMESTAMP},
      </if>
      <if test="detail != null" >
        #{detail,jdbcType=LONGVARCHAR},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="cn.ssm.test.po.ItemsExample" 
  resultType="java.lang.Integer" >
    select count(*) from items
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map" >
    update items
    <set >
      <if test="record.id != null" >
        id = #{record.id,jdbcType=INTEGER},
      </if>
      <if test="record.name != null" >
        name = #{record.name,jdbcType=VARCHAR},
      </if>
      <if test="record.price != null" >
        price = #{record.price,jdbcType=REAL},
      </if>
      <if test="record.pic != null" >
        pic = #{record.pic,jdbcType=VARCHAR},
      </if>
      <if test="record.createtime != null" >
        createtime = #{record.createtime,jdbcType=TIMESTAMP},
      </if>
      <if test="record.detail != null" >
        detail = #{record.detail,jdbcType=LONGVARCHAR},
      </if>
    </set>
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExampleWithBLOBs" parameterType="map" >
    update items
    set id = #{record.id,jdbcType=INTEGER},
      name = #{record.name,jdbcType=VARCHAR},
      price = #{record.price,jdbcType=REAL},
      pic = #{record.pic,jdbcType=VARCHAR},
      createtime = #{record.createtime,jdbcType=TIMESTAMP},
      detail = #{record.detail,jdbcType=LONGVARCHAR}
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map" >
    update items
    set id = #{record.id,jdbcType=INTEGER},
      name = #{record.name,jdbcType=VARCHAR},
      price = #{record.price,jdbcType=REAL},
      pic = #{record.pic,jdbcType=VARCHAR},
      createtime = #{record.createtime,jdbcType=TIMESTAMP}
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="cn.ssm.test.po.Items" >
    update items
    <set >
      <if test="name != null" >
        name = #{name,jdbcType=VARCHAR},
      </if>
      <if test="price != null" >
        price = #{price,jdbcType=REAL},
      </if>
      <if test="pic != null" >
        pic = #{pic,jdbcType=VARCHAR},
      </if>
      <if test="createtime != null" >
        createtime = #{createtime,jdbcType=TIMESTAMP},
      </if>
      <if test="detail != null" >
        detail = #{detail,jdbcType=LONGVARCHAR},
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKeyWithBLOBs" parameterType="cn.ssm.test.po.Items" >
    update items
    set name = #{name,jdbcType=VARCHAR},
      price = #{price,jdbcType=REAL},
      pic = #{pic,jdbcType=VARCHAR},
      createtime = #{createtime,jdbcType=TIMESTAMP},
      detail = #{detail,jdbcType=LONGVARCHAR}
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="cn.ssm.test.po.Items" >
    update items
    set name = #{name,jdbcType=VARCHAR},
      price = #{price,jdbcType=REAL},
      pic = #{pic,jdbcType=VARCHAR},
      createtime = #{createtime,jdbcType=TIMESTAMP}
    where id = #{id,jdbcType=INTEGER}
  </update>
</mapper>

(8) 在service文件夹内,通过使用service整合mapper接口,实现相关查询功能

@Autowired
private ItemsMapper itemsMapper;
@Override
public List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo)
        throws Exception {
    //通过ItemsMapperCustom查询数据库
    return itemsMapperCustom.findItemsList(itemsQueryVo);
}

(9) 创建controller,使用注解功能

@Controller
//为了对url进行分类管理 ,可以在这里定义根路径,最终访问url是根路径+子路径
//比如:商品列表:/items/queryItems.action
@RequestMapping("/items")
public class ItemsController {
    @Autowired
    private ItemsService itemsService;
    // 商品查询
    @RequestMapping("/queryItems")
    public ModelAndView queryItems(HttpServletRequest request) throws Exception {
        //测试forward后request是否可以共享
        System.out.println(request.getParameter("id"));
        // 调用service查找 数据库,查询商品列表
        List<ItemsCustom> itemsList = itemsService.findItemsList(null);
        // 返回ModelAndView
        ModelAndView modelAndView = new ModelAndView();
        // 相当 于request的setAttribut,在jsp页面中通过itemsList取数据
        modelAndView.addObject("itemsList", itemsList);
      // 指定视图
      // 下边的路径,如果在视图解析器中配置jsp路径的前缀和jsp路径的后缀,修改为
        // modelAndView.setViewName("/WEB-INF/jsp/items/itemsList.jsp");
        // 上边的路径配置可以不在程序中指定jsp路径的前缀和jsp路径的后缀
        modelAndView.setViewName("items/itemsList");
        return modelAndView;
       }
    }

(10) 在WEB-INF下添加jsp文件,在jsp文件夹内添加html文件

(11) 修改web.xml的配置,修改访问路径、配置外路径等。

<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_2_5.xsd"
         id="WebApp_ID" version="2.5">
  <display-name>test</display-name>
  <!-- 加载spring容器 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/applicationContext.xml</param-value>
  </context-param>
  <listener>
    <listener-class>
       org.springframework.web.context.ContextLoaderListener
    </listener-class>
  </listener>
  <!-- springmvc前端控制器 -->
  <servlet>
    <servlet-name>spring_mybatis</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!-- contextConfigLocation配置springmvc加载的配置文件
    (配置处理器映射器、适配器等等) 如果不配置contextConfigLocation,
    默认加载的是/WEB-INF/servlet名称-serlvet.xml(springmvc-servlet.xml) -->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring/springmvc.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>spring_mybatis</servlet-name>
    <!-- 第一种:*.action,访问以.action结尾 由DispatcherServlet进行解析 
    第二种:/,所以访问的地址都由DispatcherServlet进行解析,
    对于静态文件的解析需要配置不让DispatcherServlet进行解析,
    使用此种方式可以实现 RESTful风格的url 
    第三种:/*,这样配置不对,使用这种配置,最终要转发到一个jsp页面时, 
    仍然会由DispatcherServlet解析jsp地址,不能根据jsp页面找到handler,会报错。 -->
    <url-pattern>*.action</url-pattern>
  </servlet-mapping>
  <!-- post乱码过虑器 -->
  <filter>
    <filter-name>CharacterEncodingFilter</filter-name>
    <filter-class>
       org.springframework.web.filter.CharacterEncodingFilter
     </filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
</web-app>

3、实现Tomcat热部署

(1)找到Edit configurations,进入到如下界面

https://img1.sycdn.imooc.com//5c206f520001065e15870832.jpg

(2)点击fix或者点击Deployment,进入如下界面设置相关参数

https://img1.sycdn.imooc.com//5c20f11b000133a705000110.jpg

(3)更改下图中的两项参数

https://img1.sycdn.imooc.com//5c207030000190aa15880834.jpg

(4)Build项目

https://img1.sycdn.imooc.com//5c2070470001b5e104830265.jpg

(5)build后的结果展示

https://img1.sycdn.imooc.com//5c20705c0001e96403720465.jpg

 

4、注意事项

(1)需要在pom.xml中的build下添加如下代码,解决编译后的mapper文件内无法编译XXXmapper.xml内容

<!--编译main/java/*下的.xml文件-->

<resources>
    <resource>
        <directory>src/main/java</directory><!---设置编译的包-->
        <includes>
        <include>**/*.xml</include><!---该路径下的.xml类型文件也要编译-->
        <include>**/*.properties</include><!---该路径下的.properties
        类型文件也要编译-->
        </includes>
        <filtering>false</filtering>
    </resource>
</resources>

(2)热部署的时候,注意不要改变Application context的默认配置,需要修改首页显示的页面,路径可在Server中配置

https://img1.sycdn.imooc.com//5c20707c0001c6c711140196.jpg

https://img1.sycdn.imooc.com//5c20707d0001749915870349.jpg

 

 

 

 

 

 

 

 


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