springmvc+mybatis很經典的例子
springMVC+mybatis框架搭建
首先我們先要弄清搭建專案的一般流程,需要注意哪些方面,想要什麼樣的效果,自己的功能有哪些?
(假設效果:專案目錄結構清晰,能夠查詢到本地資料庫中的內容。。)
1. 工程目錄結構整理清楚
在src/main/java資料夾中,新建包cn.springmvc.model(存放javabean),
cn.springmvc.dao(存放spring與mybatis連線介面),
cn.springmvc.service(service介面),
cn.springmvc.service.impl(service介面的實現),
cn.springmvc.controller(存放控制層controller)
在src/main/resource資料夾中,新建包conf(存放配置檔案),
mapper(mybatis的mapper檔案)
在src/test/java資料夾中,新建包cn.springmvc.test(存放測試檔案)
在WEB-INF資料夾下新建jsp資料夾(存放jsp檔案)
這樣專案結構基本完成了
2. 引入依賴包
開啟maven的pom檔案,對本次開發所需使用的架包依次匯入(maven專案管理的優勢)
pom.xml(包依賴)
<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>eyas.springmvc</groupId> <artifactId>springmvc</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>springmvc Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <!-- spring版本號 --> <spring.version>3.2.4.RELEASE</spring.version> <!-- mybatis版本號 --> <mybatis.version>3.2.4</mybatis.version> <!-- log4j日誌檔案管理包版本 --> <slf4j.version>1.6.6</slf4j.version> <log4j.version>1.2.9</log4j.version> </properties> <dependencies> <!-- spring核心包 --> <!-- springframe start --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</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-oxm</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-jdbc</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-aop</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-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <!-- springframe end --> <!-- mybatis核心包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <!-- mybatis/spring包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency> <!-- mysql驅動包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.29</version> </dependency> <!-- junit測試包 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <!-- 阿里巴巴資料來源包 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.2</version> </dependency> <!-- json資料 --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.13</version> </dependency> <!-- 日誌檔案管理包 --> <!-- log start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${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 --> </dependencies> <build> <finalName>springmvc</finalName> </build> </project>
3. 配置資料庫連線屬性
conf/ jdbc.properties(jdbc配置檔案)
jdbc_driverClassName=com.mysql.jdbc.Driver
jdbc_url=jdbc:mysql://localhost:3306/mydays?useUnicode=true&characterEncoding=utf-8
jdbc_username=root
jdbc_password=root
4. 配置spring配置檔案
conf/spring.xml(spring配置檔案的掃描)
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 引入jdbc配置檔案 --> <context:property-placeholder location="classpath:conf/jdbc.properties"/> <!-- 掃描檔案(自動將servicec層注入) --> <context:component-scan base-package="cn.springmvc.service"/> </beans>conf/spring-mybatis.xml(spring與mybatis連線屬性)
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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/tx http://www.springframework.org/schema/tx/spring-tx-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/util http://www.springframework.org/schema/util/spring-util-3.2.xsd"> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close" > <property name="driverClassName"> <value>${jdbc_driverClassName}</value> </property> <property name="url"> <value>${jdbc_url}</value> </property> <property name="username"> <value>${jdbc_username}</value> </property> <property name="password"> <value>${jdbc_password}</value> </property> <!-- 連線池最大使用連線數 --> <property name="maxActive"> <value>20</value> </property> <!-- 初始化連線大小 --> <property name="initialSize"> <value>1</value> </property> <!-- 獲取連線最大等待時間 --> <property name="maxWait"> <value>60000</value> </property> <!-- 連線池最大空閒 --> <property name="maxIdle"> <value>20</value> </property> <!-- 連線池最小空閒 --> <property name="minIdle"> <value>3</value> </property> <!-- 自動清除無用連線 --> <property name="removeAbandoned"> <value>true</value> </property> <!-- 清除無用連線的等待時間 --> <property name="removeAbandonedTimeout"> <value>180</value> </property> <!-- 連線屬性 --> <property name="connectionProperties"> <value>clientEncoding=UTF-8</value> </property> </bean> <!-- mybatis檔案配置,掃描所有mapper檔案 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean" p:dataSource-ref="dataSource" p:configLocation="classpath:conf/mybatis-config.xml" p:mapperLocations="classpath:mapper/*.xml"/><!-- configLocation為mybatis屬性 mapperLocations為所有mapper--> <!-- spring與mybatis整合配置,掃描所有dao --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" p:basePackage="cn.springmvc.dao" p:sqlSessionFactoryBeanName="sqlSessionFactory"/> <!-- 對資料來源進行事務管理 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" p:dataSource-ref="dataSource"/> </beans>
5. java程式碼編寫(model,dao,service層程式碼)
cn.springmvc.model/User.java(使用者基本資訊)
package cn.springmvc.model;
/**
* 使用者表
*/
public class User {
private int id;
private int state;
private String nickname;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getState() {
return state;
}
public void setState(int state) {
this.state = state;
}
public String getNickname() {
return nickname;
}
public void setNickname(String nickname) {
this.nickname = nickname;
}
}
cn.springmvc.dao/UserDAO.java(dao操作介面)
package cn.springmvc.dao;
import cn.springmvc.model.User;
public interface UserDAO {
/**
* 新增新使用者
* @param user
* @return
*/
public int insertUser(User user);
}
cn.springmvc.service/UserService.java(service層介面)
package cn.springmvc.service;
import cn.springmvc.model.User;
public interface UserService {
public int insertUser(User user);
}
cn.springmvc.service.impl/UserServiceImpl.java(service層介面實現)
package cn.springmvc.service.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import cn.springmvc.dao.UserDAO;
import cn.springmvc.model.User;
import cn.springmvc.service.UserService;
@Service
public class UserServiceImpl implements UserService{
@Autowired
private UserDAO userDAO;
@Override
public int insertUser(User user) {
// TODO Auto-generated method stub
return userDAO.insertUser(user);
}
}
6. mybatis配置
conf/mybatis-config.xml(mybatis配置的基本檔案)
<?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> <!-- 名稱空間 --> <typeAliases> <typeAlias alias="User" type="cn.springmvc.model.User"/> </typeAliases> <!-- 對映map --> <mappers> </mappers> </configuration>mapper/UserMapper.xml(mybatis的實現)
<?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="cn.springmvc.dao.UserDAO"> <insert id="insertUser" parameterType="User" keyProperty="id"> insert into days_user( state, nickname) values ( #{state}, #{nickname}) </insert> </mapper>這樣就完成了基本插入使用者的功能!
7. junit測試插入功能
cn.springmvc.test/UserTest.java(使用者測試模組)
package cn.springmvc.test;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import cn.springmvc.model.User;
import cn.springmvc.service.UserService;
public class UserTest {
private UserService userService;
@Before
public void before(){
@SuppressWarnings("resource")
ApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"classpath:conf/spring.xml"
,"classpath:conf/spring-mybatis.xml"});
userService = (UserService) context.getBean("userServiceImpl");
}
@Test
public void addUser(){
User user = new User();
user.setNickname("你好");
user.setState(2);
System.out.println(userService.insertUser(user));
}
}
測試結果如圖:
即完成插入功能!
8. springMVC模組搭建
web.xml(web功能配置)
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 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>Archetype Created Web Application</display-name> <!-- 讀取spring配置檔案 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:conf/spring.xml; classpath:conf/spring-mybatis.xml </param-value> </context-param> <!-- 設計路徑變數值 --> <context-param> <param-name>webAppRootKey</param-name> <param-value>springmvc.root</param-value> </context-param> <!-- Spring字符集過濾器 --> <filter> <filter-name>SpringEncodingFilter</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>SpringEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 日誌記錄 --> <context-param> <!-- 日誌配置檔案路徑 --> <param-name>log4jConfigLocation</param-name> <param-value>classpath:conf/log4j.properties</param-value> </context-param> <context-param> <!-- 日誌頁面的重新整理間隔 --> <param-name>log4jRefreshInterval</param-name> <param-value>6000</param-value> </context-param> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- springMVC核心配置 --> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:conf/spring-mvc.xml</param-value> </init-param> <load-on-startup>2</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!-- 錯誤跳轉頁面 --> <error-page> <!-- 路徑不正確 --> <error-code>404</error-code> <location>/WEB-INF/errorpage/404.jsp</location> </error-page> <error-page> <!-- 沒有訪問許可權,訪問被禁止 --> <error-code>405</error-code> <location>/WEB-INF/errorpage/405.jsp</location> </error-page> <error-page> <!-- 內部錯誤 --> <error-code>500</error-code> <location>/WEB-INF/errorpage/500.jsp</location> </error-page> </web-app>conf/spring-mvc.xml(mvc配置檔案)
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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-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/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd"> <!-- 掃描controller(controller層注入) --> <context:component-scan base-package="cn.springmvc.controller"/> <!-- 避免IE在ajax請求時,返回json出現下載 --> <bean id="jacksonMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> </list> </property> </bean> <!-- 對模型檢視新增前後綴 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/jsp/" p:suffix=".jsp"/> </beans>
9. log4j日誌記錄搭建
conf/log4j.properties(日誌記錄的配置檔案)
### set log levels ### #log4j.rootLogger = debug , stdout , D , E log4j.rootLogger = debug , stdout , D ### output to the console ### log4j.appender.stdout = org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target = System.out log4j.appender.stdout.layout = org.apache.log4j.PatternLayout #log4j.appender.stdout.layout.ConversionPattern = %d{ABSOLUTE} %5p %c{ 1 }:%L - %m%n log4j.appender.stdout.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m%n ### Output to the log file ### log4j.appender.D = org.apache.log4j.DailyRollingFileAppender log4j.appender.D.File = ${springmvc.root}/WEB-INF/logs/log.log log4j.appender.D.Append = true log4j.appender.D.Threshold = DEBUG log4j.appender.D.layout = org.apache.log4j.PatternLayout log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n ### Save exception information to separate file ### log4j.appender.D = org.apache.log4j.DailyRollingFileAppender log4j.appender.D.File = ${springmvc.root}/WEB-INF/logs/error.log log4j.appender.D.Append = true log4j.appender.D.Threshold = ERROR log4j.appender.D.layout = org.apache.log4j.PatternLayout log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
10. 測試執行
WEB-INF/jsp/index.jsp(測試檔案)
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>
<h1>歡迎你!!!</h1>
</body>
</html>
cn.springmvc.controller/UserComtroller.java(controller層控制)
package cn.springmvc.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
@RequestMapping("/")
public class UserController {
@RequestMapping("index")
public String index(){
return "index";
}
}
將該專案部署到本地tomcat6中
右擊該專案選擇Run as,選擇Run on Server
選擇自己建立的tomcat6執行如圖:
控制檯打印出日誌如圖(啟動成功):
在瀏覽器中輸入:http://localhost:8080/springmvc/index.do 進行測試
效果如圖(返回成功):
整體包下載地址:
http://download.csdn.net/detail/fengerfhf/6916831
來自:http://my.oschina.net/u/1011897/blog/199172