入门案例 - maven工程中ssm的整合

我们可以通过一个简单的功能需求: 在页面输入一个 id , 页面跳转并返回该 id 对应的 item 明细 来实现 maven 工程中 ssm 的整合.

首先,要做的是配置相关环境(数据库模板导入 maven工程的创建等)

一. 数据库模板导入

1. 打开数据库(我将使用 SQLyog 可视化工具进行讲解), 创建一张 item 表:

sql语句:

-- 创建数据库 CREATE DATABASE IF NOT EXISTS maven_test; -- 使用数据库 USE maven_test; -- 创建表 DROP TABLE IF EXISTS `items`; CREATE TABLE `items` (   `id` INT(10) NOT NULL AUTO_INCREMENT,   `name` VARCHAR(20) DEFAULT NULL,   `price` FLOAT(10,0) DEFAULT NULL,   `createtime` DATETIME DEFAULT NULL,   `detail` VARCHAR(200) DEFAULT NULL,   PRIMARY KEY  (`id`) ) ENGINE=INNODB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8; -- 添加字段 INSERT INTO `items` VALUES (NULL, '张三', '1000', '2018-10-11 09:29:30', '我是张三'); INSERT INTO `items` VALUES (NULL, '李四', '2000', '2018-10-12 10:05:52', '我是李四'); INSERT INTO `items` VALUES (NULL, '王五', '3000', '2018-10-13 10:08:04', '我是王五'); INSERT INTO `items` VALUES (NULL, '赵六', '4000', '2018-10-14 10:08:04', '我是赵六'); INSERT INTO `items` VALUES (NULL, '田七', '5000', '2018-10-15 10:08:04', '我是田七');

二. maven 聚合工程的创建

1. 打开 IDEA 按照如下步骤创建 maven 工程的父工程 maven_parent :

创建工程:

自动导入:

此时父工程 maven_parent 模板就已经创建好了;

2. 按照如下步骤创建 maven 工程的子工程 maven_dao :

此时子工程 maven_dao 模板就已经创建好了;

3. 按照创建子工程 maven_dao 的步骤创建 maven 工程的子工程 maven_service, 步骤都不变, 只需要记得修改子工程名为 maven_service 即可, 此步骤将不做截图演示

4. 按照如下步骤创建 maven 工程的子工程 maven_web :

***此时需要勾选 create from archetype 选择 maven-archetype-webapp 使用骨架创建 web表现层:

此时子工程 maven_web 模板就已经创建好了;

以上 maven 聚合工程的模板就已经搭建好了;

三. maven 聚合工程父工程 maven_parent 中的代码编写

此时的父工程可以抽取其下所有的子工程共有的代码, 其下的所有子工程均可以继承该父工程中的代码, 那么此时的父工程中只需要编写 pom.xml 文件即可:

<?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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.itcast</groupId>
    <artifactId>maven_parent</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>maven_dao</module>
        <module>maven_service</module>
        <module>maven_web</module>
    </modules>

    <!-- 统一管理jar包版本 -->
    <properties>
        <spring.version>5.0.2.RELEASE</spring.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <shiro.version>1.2.3</shiro.version>
        <mysql.version>5.1.6</mysql.version>
        <mybatis.version>3.4.5</mybatis.version>
        <spring.security.version>5.0.1.RELEASE</spring.security.version>
    </properties>

    <!-- 锁定jar包版本 -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</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>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-tx</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>${mybatis.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <!-- 项目依赖jar包 -->
    <dependencies>
        <!-- spring -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.6.8</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</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>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</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-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- log start -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</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 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.1.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>${spring.security.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>${spring.security.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-core</artifactId>
            <version>${spring.security.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-taglibs</artifactId>
            <version>${spring.security.version}</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.9</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>
    <!-- 添加tomcat7插件 -->
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
            </plugin>
        </plugins>
    </build>
    
</project>

四. maven 聚合工程子工程 maven_dao 中的代码编写

该子工程的任务主要是负责与数据库打交道的dao持久层, 我们所用到的框架是 mabatis 

1. 首先我们需要编辑 pom.xml 文件来继承父工程中的 pom.xml 文件来获取相关依赖

<?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/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>maven_parent</artifactId>
        <groupId>com.itcast</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>maven_dao</artifactId>
    
</project>

由于此子工程直接与数据库打交道, 为父工程的第一层, 其 pom.xml 自动默任继承父工程中的 pom.xml .

2. 然后我们需要在 main\java 下创建组编写 domain  来封装数据库中 item 的实体类:

package com.itcast.domain;

import java.util.Date;

/**
 * 封装数据库中items表的实体类
 */
public class Items {

    //成员属性
    //成员类型 成员值 需与数据库中列类型 列名称对应
    private Integer id;
    private String name;
    private Double price;
    private Date createtime;
    private String detail;

    //Getter & Setter
    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;
    }

    public Double getPrice() {
        return price;
    }

    public void setPrice(Double price) {
        this.price = price;
    }

    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;
    }

    //重写 toString()
    @Override
    public String toString() {
        return "Items{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", price=" + price +
                ", createtime=" + createtime +
                ", detail='" + detail + '\'' +
                '}';
    }

}

同时我们需要创建 IItemsDao 接口, 定义要实现的方法:

package com.itcast.dao;

import com.itcast.domain.Items;

/**
 * dao持久层接口
 * 定义方法
 */
public interface IItemsDao {

    //通过 id 查询 item
    public Items findById(Integer id);

}

3. 最后我们需要在 main\resources 中创建 sql 映射文件, 该文件路径必须与 IItemsDao 接口路径一致(同包同名, 建包要求: 如 com\itcast\dao 或者一个一个地创建 不可连续):

<?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="com.itcast.dao.IItemsDao">
    <select id="findById" parameterType="int" resultType="items">
        select * from items where id = #{id}
    </select>
</mapper>

4. 同时我们需要在 main\resources 中创建 applicationContext-dao.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"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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
			    http://www.springframework.org/schema/mvc
			    http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--dao层配置文件-->
    <!--配置连接池-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql:///maven_test"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <!--配置生产SqlSession对象的工厂-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--扫描pojo包，给包下所有pojo对象起别名-->
        <property name="typeAliasesPackage" value="com.itcast.domain"/>
    </bean>

    <!--扫描接口包路径，生成包下所有接口的代理对象，并且放入spring容器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.itcast.dao"/>
    </bean>

</beans>

五. maven 聚合工程子工程 maven_service 中的代码编写

该子工程的任务主要是负责业务层代码的逻辑处理, 我们所用到的框架是 spring 

1. 首先我们需要编辑 pom.xml 文件来依赖子工程 maven_dao 中的 pom.xml 文件来获取相关依赖

<?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/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>maven_parent</artifactId>
        <groupId>com.itcast</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    
    <artifactId>maven_service</artifactId>

    <!-- 导入dao层 -->
    <dependencies>
        <dependency>
            <groupId>com.itcast</groupId>
            <artifactId>maven_dao</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

2. 然后我们需要在 main\java 下创建组编写 IItemsService 接口:

package com.itcast.service;

import com.itcast.domain.Items;

/**
 * service业务层接口
 * 定义方法
 */
public interface IItemsService {

    //通过 id 查询 item
    public Items findById(Integer id);

}

3.  同时我们需要在 main\java 下创建组实现 IItemsService 接口的实现类:

package com.itcast.service.impl;

import com.itcast.dao.IItemsDao;
import com.itcast.domain.Items;
import com.itcast.service.IItemsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * service业务层接口实现类
 */
@Service
public class ItemsServiceImpl implements IItemsService {

    @Autowired      //自动从容器中获取 itemsDao 代理对象
    private IItemsDao itemsDao;

    public Items findById(Integer id) {
        //调用方法并返回
        return itemsDao.findById(id);
    }

}

4. 最后我们需要在 main\resources 中创建 applicationContext-service.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"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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
			    http://www.springframework.org/schema/mvc
			    http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--引入dao层配置文件-->
    <import resource="applicationContext-dao.xml"/>

    <!--service层配置文件-->
    <!--组件扫描配置-->
    <context:component-scan base-package="com.itcast.service"/>

    <!--aop面向切面编程，切面就是切入点和通知的组合-->
    <!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置事务的通知-->
    <tx:advice id="advice">
        <tx:attributes>
            <tx:method name="save*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <!--配置切面-->
    <aop:config>
        <aop:pointcut id="pointcut" expression="execution(* com.itcast.service.impl.*.*(..))"/>
        <aop:advisor advice-ref="advice" pointcut-ref="pointcut"/>
    </aop:config>

</beans>

六. maven 聚合工程子工程 maven_web 中的代码编写

该子工程的任务主要是负责展示从数据库中查询到的数据到页面, 我们所用到的框架是 springmvc 

1. 首先我们需要编辑 pom.xml 文件来依赖子工程 maven_service 中的 pom.xml 文件来获取相关依赖:

<?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/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>maven_parent</artifactId>
        <groupId>com.itcast</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>maven_web</artifactId>

    <!--导入service层-->
    <dependencies>
        <dependency>
            <groupId>com.itcast</groupId>
            <artifactId>maven_service</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

2. 然后我们需要在 main\java 下创建组编写 controller 类:

package com.itcast.controller;

import com.itcast.domain.Items;
import com.itcast.service.IItemsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Controller
@RequestMapping("/items")
public class ItemsController {

    @Autowired
    private IItemsService itemsService;

    @RequestMapping("/findById")
    public String findById(Model model, HttpServletRequest request, HttpServletResponse response){
        //获取请求页面传递过来的参数
        String sid = request.getParameter("id");
        int id = Integer.parseInt(sid);
        System.out.println(id);
        //调用方法
        Items item = itemsService.findById(id);
        System.out.println(item);
        //将结果存入session域
        model.addAttribute("item", item);
        //跳转页面
        return "findById";
    }

}

3. 其次我们需要在 main\resources 中创建 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"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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
			    http://www.springframework.org/schema/mvc
			    http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--引入service配置文件-->
    <import resource="applicationContext-service.xml"/>

</beans>

4. 同时我们需要在 main\resources 中创建 springmvc.xml 容器配置文件:

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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
			    http://www.springframework.org/schema/mvc
			    http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--组件扫描-->
    <context:component-scan base-package="com.itcast.controller"/>

    <!--处理器映射器，处理器适配器,springmvc注解支持-->
    <mvc:annotation-driven/>

    <!--视图解析器-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <!--释放静态资源-->
    <mvc:default-servlet-handler/>

</beans>

5. 导入log4j.properties 日志文件:

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=debug, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

6. 最后 配置 web.xml 核心配置文件:

<!DOCTYPE web-app PUBLIC
        "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
        "http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
          http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">

  <!--编码过滤器-->
  <filter>
    <filter-name>encoding</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>encoding</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <!--springmvc的核心servlet 前端控制器-->
  <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:springmvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!--配置spring核心监听器-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--重新指定spring配置文件的路径-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

</web-app>

7. index.jsp 页面:

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>

<form action="items/findById" method="post">
    id: <input type="text" name="id"><br>
    <input type="submit" value=" 查 询 ">
</form>

</body>
</html>

8. 结果返回界面:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt"  prefix="fmt"%>    
 
<!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> 
	<form>
		<table width="100%" border=1>
			<tr>
				<td>id</td>
				<td>${item.id}</td>
			</tr>
			<tr>
				<td>name</td>
				<td>${item.name}</td>
			</tr>
			<tr>
				<td>price</td>
				<td>${item.price }</td>
			</tr>
			<tr>
				<td>createtime</td>
				<td><fmt:formatDate value="${item.createtime}" pattern="yyyy-MM-dd HH:mm:ss"/></td>
			</tr>
			<tr>
				<td>detail</td>
				<td>${item.detail}</td>
			</tr>
		</table>
	</form>
</body>
</html>

代码下载: https://pan.baidu.com/s/1Lbbnfqrdp0lv-5vPOjaNHA

***此代码需在 jdk1.9 下运行使用***