maven工程中ssm的整合
我們可以通過一個簡單的功能需求: 在頁面輸入一個 id , 頁面跳轉並返回該 id 對應的 item 明細 來實現 maven 工程中 ssm 的整合.
首先,要做的是配置相關環境(資料庫模板匯入 maven工程的建立等)
一. 資料庫模板匯入
1. 開啟資料庫(我將使用 SQLyog 視覺化工具進行講解), 建立一張 item 表:
sql語句:
-- 建立資料庫 CREATE DATABASE IF NOT EXISTS maven_test; -- 使用資料庫 USE maven_test; -- 建立表 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; -- 新增欄位 INSERT INTO `items` VALUES (NULL, '張三', '1000', '2018-10-11 09:29:30', '我是張三'); 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, '趙六', '4000', '2018-10-14 10:08:04', '我是趙六'); INSERT INTO `items` VALUES (NULL, '田七', '5000', '2018-10-15 10:08:04', '我是田七'); |
二. maven 聚合工程的建立
1. 開啟 IDEA 按照如下步驟建立 maven 工程的父工程 maven_parent :
此時父工程 maven_parent 模板就已經建立好了;
2. 按照如下步驟建立 maven 工程的子工程 maven_dao :
此時子工程 maven_dao 模板就已經建立好了;
3. 按照建立子工程 maven_dao 的步驟建立 maven 工程的子工程 maven_service, 步驟都不變, 只需要記得修改子工程名為 maven_service 即可, 此步驟將不做截圖演示
4. 按照如下步驟建立 maven 工程的子工程 maven_web :
此時子工程 maven_web 模板就已經建立好了;
以上 maven 聚合工程的 模板就已經搭建好了;
二. maven 聚合工程父工程 maven_parent 中的程式碼編寫
此時的父工程可以抽取其下所有的子工程共有的程式碼, 其下的所有子工程均可以繼承該父工程中的程式碼, 那麼此時的父工程中只需要編寫 pom.xml 檔案即可:
<?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>
<!-- 統一管理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>
<!-- 鎖定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>
<!-- 專案依賴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>
<!-- 新增tomcat7外掛 -->
<build>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
</plugin>
</plugins>
</build>
</project>
三. maven 聚合工程子工程 maven_dao 中的程式碼編寫
該子工程的任務主要是負責與資料庫打交道的dao持久層, 我們所用到的框架是 mabatis
1. 首先我們需要編輯 pom.xml 檔案來繼承父工程中的 pom.xml 檔案來獲取相關依賴
<?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>
由於此子工程直接與資料庫打交道, 為父工程的第一層, 其 pom.xml 自動默任繼承父工程中的 pom.xml .
2. 然後我們需要在 main\java 下建立組編寫 domain 來封裝資料庫中 item 的實體類
package com.itcast.dao;
import com.itcast.domain.Items;
/**
* dao持久層介面
* 定義方法
*/
public interface IItemsDao {
//通過 id 查詢 item
public Items findById(Integer id);
}
3. 最後我們需要在 main\resources 中建立 sql 對映檔案, 該檔案路徑必須與 IItemsDao 介面路徑一致(同包同名, 建包要求 \ 不可連續):
<?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. 同時我們需要在 main\resources 中建立 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層配置檔案-->
<!--配置連線池-->
<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>
<!--配置生產SqlSession物件的工廠-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!--掃描pojo包,給包下所有pojo物件起別名-->
<property name="typeAliasesPackage" value="com.itcast.domain"/>
</bean>
<!--掃描介面包路徑,生成包下所有介面的代理物件,並且放入spring容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.itcast.dao"/>
</bean>
</beans>
四. maven 聚合工程子工程 maven_service 中的程式碼編寫
該子工程的任務主要是負責業務層程式碼的邏輯處理, 我們所用到的框架是 spring
1. 首先我們需要編輯 pom.xml 檔案來依賴子工程 maven_dao 中的 pom.xml 檔案來獲取相關依賴
<?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>
<!-- 匯入dao層 -->
<dependencies>
<dependency>
<groupId>com.itcast</groupId>
<artifactId>maven_dao</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
2. 然後我們需要在 main\java 下建立組編寫 IItemsService 介面:
package com.itcast.service;
import com.itcast.domain.Items;
/**
* service業務層介面
* 定義方法
*/
public interface IItemsService {
//通過 id 查詢 item
public Items findById(Integer id);
}
3. 同時我們需要在 main\java 下建立組實現 IItemsService 介面:
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業務層介面實現類
*/
@Service
public class ItemsServiceImpl implements IItemsService {
@Autowired //自動從容器中獲取 itemsDao 代理物件
private IItemsDao itemsDao;
public Items findById(Integer id) {
//呼叫方法並返回
return itemsDao.findById(id);
}
}
4. 最後我們需要在 main\resources 中建立 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層配置檔案-->
<import resource="applicationContext-dao.xml"/>
<!--service層配置檔案-->
<!--元件掃描配置-->
<context:component-scan base-package="com.itcast.service"/>
<!--aop面向切面程式設計,切面就是切入點和通知的組合-->
<!--配置事務管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--配置事務的通知-->
<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>
五. maven 聚合工程子工程 maven_web 中的程式碼編寫
該子工程的任務主要是負責展示從資料庫中查詢到的資料到頁面, 我們所用到的框架是 springmvc
1. 首先我們需要編輯 pom.xml 檔案來依賴子工程 maven_service 中的 pom.xml 檔案來獲取相關依賴:
<?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>
<!--匯入service層-->
<dependencies>
<dependency>
<groupId>com.itcast</groupId>
<artifactId>maven_service</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
2. 然後我們需要在 main\java 下建立組編寫 controller 類:
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){
//獲取請求頁面傳遞過來的引數
String sid = request.getParameter("id");
int id = Integer.parseInt(sid);
System.out.println(id);
//呼叫方法
Items item = itemsService.findById(id);
System.out.println(item);
//將結果存入session域
model.addAttribute("item", item);
//跳轉頁面
return "findById";
}
}
3. 其次我們需要在 main\resources 中建立 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配置檔案-->
<import resource="applicationContext-service.xml"/>
</beans>
4. 同時我們需要在 main\resources 中建立 springmvc.xml 容器配置檔案:
<?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">
<!--元件掃描-->
<context:component-scan base-package="com.itcast.controller"/>
<!--處理器對映器,處理器介面卡,springmvc註解支援-->
<mvc:annotation-driven/>
<!--檢視解析器-->
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!--釋放靜態資源-->
<mvc:default-servlet-handler/>
</beans>
5. 匯入log4j.properties 日誌檔案:
# 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. 最後 配置 web.xml 核心配置檔案:
<!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">
<!--編碼過濾器-->
<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核心監聽器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--重新指定spring配置檔案的路徑-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
</web-app>
7. index.jsp 頁面:
<%@ 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 詢 ">
</form>
</body>
</html>
8. 結果返回介面:
<%@ 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>