需求:整合springmvc和mybatis
整合的目标是:控制层采用springmvc,持久层使用mybatis
整合思想
dao层:
1、SqlMapConfig.xml.空文件即可。但是需要头文件。使用逆向工程的时候可以不配置别名。
2、applicationContext.xml
1)数据库连接池
2)SqlSessionFactory对象
3)配置mapper文件扫描器
4)事务管理
5)开启注解事务
3、db.properties 存放数据库的配置信息
controller层:
springmvc.xml
1)包扫描器
2)配置注解驱动
3)配置视图解析器
web.xml
1)配置spring
2)配置前端控制器
其它可选配置
log4j.properties
整合步骤
1 创建动态web工程
2 导入所需的jar
3 SqlMapConfgi.xml
如果使用逆向工程的话,可以不需要配置别名,空文件即可,但是需要头文件。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 设置别名 -->
<typeAliases>
<!-- 2. 指定扫描包,会把包内所有的类都设置别名,别名的名称就是类名,大小写不敏感 -->
<package name="com.test.springmvc.pojo" />
</typeAliases>
</configuration>
4 applicationContext.xml
1.数据库连接池
2.SqlSessionFactory对象,需要spring和mybatis整合包下的
3.配置mapper文件扫描器
4.配置事务管理
5.开启注解
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
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:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-4.0.xsd">
<!-- 1加载配置文件 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 2配置连接池 -->
<bean name="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<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="10" />
<property name="maxIdle" value="5" />
</bean>
<!--3 配置SqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 配置mybatis核心配置文件 -->
<property name="configLocation" value="classpath:SqlMapConfig.xml" />
<!-- 配置数据源 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!--4 Mapper代理开发 扫描 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.test.springmvc.mapper"></property>
</bean>
<!--5 配置事务管理器 -->
<bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--6 开启注解 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
5 db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://39.105.94.154:3306/springmvc?characterEncoding=utf-8
jdbc.username=tom
jdbc.password=tom
6 springmvc.xml
1包扫描器
2配置处理器映射器和处理器适配器(或者直接配置注解驱动就可以了)
3配置视图解析器
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- 配置扫描组件 ,扫描@Controller,@Service等-->
<context:component-scan base-package="com.test.springmvc" />
<!-- 配置注解驱动,如果配置此标签可以不用配置处理器映射器和适配器 -->
<mvc:annotation-driven />
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 配置逻辑视图的前缀 -->
<property name="prefix" value="/WEB-INF/jsp/"></property>
<!-- 配置逻辑视图的后缀 -->
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
7 web.xml
- 配置spring监听器
- 配置前端控制器
<?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>springmvc</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>
<!-- 配置spring -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!-- 使用监听器加载Spring配置文件 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置过滤器,解决post的乱码问题 -->
<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>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 配置SrpingMVC的前端控制器 -->
<servlet>
<servlet-name>springmvc-web</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>
<!-- 配置springmvc什么时候启动,参数必须为整数 -->
<!-- 如果为0或者大于0,则springMVC随着容器启动而启动 -->
<!-- 如果小于0,则在第一次请求进来的时候启动 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc-web</servlet-name>
<!-- 配置所有以action结尾的请求进入SpringMVC -->
<url-pattern>*.action</url-pattern>
</servlet-mapping>
</web-app>
8 log4j.properties
### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### direct messages to file mylog.log ###
log4j.appender.file=org.apache.log4j.FileAppender
log4j.appender.file.File=d:\\mylog.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### set log levels - for more verbose logging change 'info' to 'debug' ###
### fatal error warn info debug trace \u5982\u679C\u4E0D\u60F3\u8981\u8F93\u51FA\uFF1B log4j.rootLogger=off, stdout
log4j.rootLogger=debug, stdout
9 配置完成后的效果
简单测试
1 准备一个jsp页面
代码内容:
<%@ 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="${pageContext.request.contextPath }/item/queryitem.action" method="post">
查询条件:
<table width="100%" border=1>
<tr>
<td><input type="submit" value="查询"/></td>
</tr>
</table>
商品列表:
<table width="100%" border=1>
<tr>
<td>商品名称</td>
<td>商品价格</td>
<td>生产日期</td>
<td>商品描述</td>
<td>操作</td>
</tr>
<c:forEach items="${itemList }" 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="${pageContext.request.contextPath }/itemEdit.action?id=${item.id}">修改</a></td>
</tr>
</c:forEach>
</table>
</form>
</body>
</html>
View Code
2 准备一个Items类
package com.test.springmvc.pojo;
import java.util.Date;
public class Items {
private Integer id;
private String name;
private Float price;
private String pic;
private Date createtime;
private String detail;
public Items(Integer id, String name, Float price, Date createtime, String detail) {
super();
this.id = id;
this.name = name;
this.price = price;
this.createtime = createtime;
this.detail = 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();
}
}
View Code
3 编写ItemsController
package com.test.springmvc.controller;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import com.test.springmvc.pojo.Items;
@Controller
public class ItemController {
// @RequestMapping:里面放的是请求的url,和用户请求的url进行匹配
// action可以写也可以不写
@RequestMapping("/item/itemList.action")
public ModelAndView queryItemList(){
// 创建页面需要显示的商品数据
List<Items> list = new ArrayList<>();
list.add(new Items(1, "1华为 荣耀8", 2399f, new Date(), "质量好!1"));
list.add(new Items(2, "2华为 荣耀8", 2399f, new Date(), "质量好!2"));
list.add(new Items(3, "3华为 荣耀8", 2399f, new Date(), "质量好!3"));
list.add(new Items(4, "4华为 荣耀8", 2399f, new Date(), "质量好!4"));
list.add(new Items(5, "5华为 荣耀8", 2399f, new Date(), "质量好!5"));
list.add(new Items(6, "6华为 荣耀8", 2399f, new Date(), "质量好!6"));
// 创建ModelAndView,用来存放数据和视图
ModelAndView modelAndView = new ModelAndView();
// 设置视图jsp,需要设置视图的物理地址
modelAndView.setViewName("itemList");
// 设置数据到模型中
modelAndView.addObject("itemList", list);
return modelAndView;
}
}
4 启动项目
输入网址:http://localhost:8080/springmvc/item/itemList.action
效果如下:
乱码问题解决
1 post提交乱码问题解决
在web.xml中加入:
<!-- 解决post乱码问题 -->
<filter>
<filter-name>encoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 设置编码参是UTF8 -->
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
2 get提交乱码问题解决
对于get请求中文参数出现乱码解决方法有两个:
修改tomcat配置文件添加编码与工程编码一致,如下:
另外一种方法对参数进行重新编码:
ISO8859-1是tomcat默认编码,需要将tomcat编码后的内容按utf-8编码