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springmvc环境搭建

沈芏 2022-06-29 阅读 40

springmvc环境搭建

数据库:

建立好业务数据存储数据库。

Java环境:

jdk1.7、MyEclipse14、数据库MySQL 5.6、spring版本:4.2.1

功能需求

商品列表查询

第一步:

创建动态web工程,导入spring的所有jar​,注意一定要包含spring-webmvc-4.2.1.RELEASE.jar 日志:​commons-logging-1.1.1.jar

jsp标签库:​jstl.jar
连接数据库:​数据库连接驱动

创建一个资源文件夹,并在资源文件夹中创建springmvc.xml文件

springmvc环境搭建_spring

第二步:

配置前端控制器

在web.xml中配置前端控制器
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
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">
<!-- springmvc前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置springmvc加载的配置文件(配置处理器映射器、适配器等) -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet>

<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>

</web-app>

配置处理器映射器

在classpath:springmvc.xml中配置处理器映射器
BeanNameUrl:将bean的name作为url查找,需要在配置Handler是指定name(url)
-->
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />

配置处理适配器

<!-- 处理器适配器 -->
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />

配置视图解析器

<!-- 视图解析器 
配置解析jsp的视图解析器,默认使用jstl标签
-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" />

编写处理器Handler

package com.ld.springmvc.controller;


import java.util.ArrayList;
import java.util.List;

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

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

import com.ld.springmvc.po.Items;


public class ItemsController implements Controller{
@Override
public ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse response) throws Exception {
//使用静态数据模拟
List<Items> itemsList = new ArrayList<Items>();
Items item = new Items();
item.setName("旺仔");
item.setPrice(10f);

Items item1 = new Items();
item1.setName("旺1仔");
item1.setPrice(11f);

Items item2 = new Items();
item2.setName("旺仔");
item2.setPrice(10f);

Items item3 = new Items();
item3.setName("旺2仔");
item3.setPrice(10f);

itemsList.add(item);
itemsList.add(item1);
itemsList.add(item2);
itemsList.add(item3);

//返回ModelAndView
ModelAndView modelAndView = new ModelAndView();
//类似于request的setAttribute
modelAndView.addObject("itemsList", itemsList);
//指定视图

modelAndView.setViewName("/WEB-INF/jsp/items/itemsList.jsp");
return modelAndView;
}

}

配置处理器Handler

<!-- 配置Handler -->
<bean name="queryItem.action" class="com.ld.springmvc.controller.ItemsController" />
Handler需要实现Controller接口
package com.ld.springmvc.controller;


import java.util.ArrayList;
import java.util.List;

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

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

import com.ld.springmvc.po.Items;


public class ItemsController implements Controller{

@Override
public ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse response) throws Exception {
//使用静态数据模拟
List<Items> itemsList = new ArrayList<Items>();
Items item = new Items();
item.setName("旺仔");
item.setPrice(10f);

Items item1 = new Items();
item1.setName("旺1仔");
item1.setPrice(11f);

Items item2 = new Items();
item2.setName("旺仔");
item2.setPrice(10f);

Items item3 = new Items();
item3.setName("旺2仔");
item3.setPrice(10f);

itemsList.add(item);
itemsList.add(item1);
itemsList.add(item2);
itemsList.add(item3);

//返回ModelAndView
ModelAndView modelAndView = new ModelAndView();
//类似于request的setAttribute
modelAndView.addObject("itemsList", itemsList);
//指定视图

modelAndView.setViewName("/WEB-INF/jsp/items/itemsList.jsp");
return modelAndView;
}

}

编写视图(itemsList.jsp)

<%@ page language="java" import="java.util.*" 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" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>查询商品列表</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->

</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="${pageContext.request.contentType }/item/editItem.action?id=${item.id}">修改</a></td>
</tr>
</c:forEach>
</table>
</form>
</body>
</html>

测试路径:​​http://127.0.0.1/springmvc_first/queryItem.action​​

测试了一下,乱码了,把jsp页面编码改一下就OK了

<%
response.setContentType("text/html;charset = GB2312");
request.setCharacterEncoding("gb2312");
%>


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