ssm整合快速入门程序(二)

时间：2017-10-04 15:21:43 阅读：276 评论：0 收藏：0 [点我收藏+]

标签：autowire mapping 完成 model pat delete 前端控制器商品列表 dispatch

下面我们配置serivce层到项目中

1.service包中创建ItemsService.java接口，和service.imp包中创建一个service实现类ItemsServiceImpl.java

package cn.my.ssm.serive;

import java.util.List;

import cn.my.ssm.po.Items;

public interface ItemsService {

      List<Items> selectFind(Items items) throws Exception;
}

package cn.my.ssm.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import cn.my.ssm.mapper.ItemsMapper;
import cn.my.ssm.po.Items;
import cn.my.ssm.serive.ItemsService;
@Service
public class ItemsServiceImpl implements ItemsService {

    @Autowired
    private ItemsMapper itemDao;
    @Override
    public List<Items> selectFind(Items items) throws Exception {
        return itemDao.selectFind(items);
    }
}

2.在spring包中创建一个applicationContext-service.xml文件，为了测试我们暂时会将applicationContext-dao.xml引入到applicationContext-service.xml中

<?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:mvc="http://www.springframework.org/schema/mvc"
    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-3.2.xsd 
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.2.xsd 
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">
        <!-- service层我们使用组件扫描 -->
        <context:component-scan base-package="cn.my.ssm.service.impl"></context:component-scan>
        
        <!-- 1、配置事物管理器 -->
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource"></property>
        </bean>
        <!-- 2、配置事物管理器驱动 -->
        <tx:annotation-driven transaction-manager="transactionManager"/>
        
        <import resource="applicationContext-dao.xml"/>
</beans>

下面测试service整合是否成功

    @Test
    public void testService() throws Exception{
        ItemsService userService = (ItemsService) context.getBean("itemsServiceImpl");
        List<Items> list = userService.selectFind(null);
        System.out.println(list);
    }


测试结果
[Items [id=1, name=台式机, price=3000.0, pic=null, createtime=Tue Oct 03 23:22:36 CST 2017, detail=该电脑质量非常好！！！！111], Items [id=2, name=笔记本, price=7000.0, pic=null, createtime=Tue Oct 03 23:23:06 CST 2017, detail=笔记本性能好，质量好！！！！！], Items [id=3, name=背包, price=1200.0, pic=null, createtime=Tue Oct 03 23:23:21 CST 2017, detail=名牌背包，容量大质量好！！！！]]

下面我们就需要整合springmvc了

首先在cn.my.ssm.controller包中创建一个ItemsController.java

package cn.my.ssm.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import cn.my.ssm.po.Items;
import cn.my.ssm.serive.ItemsService;
@Controller
@RequestMapping("/Items")
public class ItemsController {

    @Autowired
    private ItemsService itemsService;
    @RequestMapping("/queryItems")
    public ModelAndView ItemsList() throws Exception{
        ModelAndView mav = new ModelAndView();
        List<Items> itemsList = itemsService.selectFind(null);
        mav.addObject("itemsList", itemsList);
        mav.setViewName("items/itemsList");
        return mav;
    }
}

spring包中创建一个springmvc.xml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:mvc="http://www.springframework.org/schema/mvc"
    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-3.2.xsd 
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.2.xsd 
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">
        
        <!-- 扫描组件 进行依赖注入-->
        <context:component-scan base-package="cn.my.ssm.service"></context:component-scan>
        <!-- 映射器和适配器驱动 -->
        <mvc:annotation-driven></mvc:annotation-driven>
        <!-- 1、配置事物管理器 -->
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource"></property>
        </bean>
        <!-- 2、配置事物管理器驱动 -->
        <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

创建一个jsp文件itemsList.jsp

<%@ 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>查询商品列表</title>
</head>
<body> 
<form action="${pageContext.request.contextPath }/item/queryItem.action" method="post">
查询条件：
<table width="100%" border=1>
<tr>
<td><input type="submit" value="查询"/></td>
</tr>
</table>
商品列表：
<table width="100%" border=1>
<tr>
    <td>商品名称</td>
    <td>商品价格</td>
    <td>生产日期</td>
    <td>商品描述</td>
    <td>操作</td>
</tr>
<c:forEach items="${itemsList }" var="item">
<tr>
    <td>${item.name }</td>
    <td>${item.price }</td>
    <td><fmt:formatDate value="${item.createtime}" pattern="yyyy-MM-dd HH:mm:ss"/></td>
    <td>${item.detail }</td>
    
    <td><a href="${pageContext.request.contextPath }/items/editItems.action?id=${item.id}">修改</a></td>

</tr>
</c:forEach>

</table>
</form>
</body>

</html>

现在基本配置都完成了，还差最后一个web.xml里面配置了。

springmvc有一个前端控制器(必须要配置)和三大组件,基本上都不需要自己开发，自己开发的只有handler（controller）和视图渲染这块(jsp)

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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>ssm-002</display-name>
  <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>
  
  <!-- 加载spring容器 -->
  <context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/classes/spring/applicationContext-*.xml</param-value>
  </context-param>
  <!-- 配置监听器 -->
  <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 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:spring/springmvc.xml</param-value>
      </init-param>
  </servlet>
  <!-- 拦截器 -->
  <servlet-mapping>
      <servlet-name>springmvc</servlet-name>
      <url-pattern>*.action</url-pattern>
  </servlet-mapping>
</web-app>