SpringMVC+MyBatis分頁（最新）

更新時(shí)間：2016年12月09日 11:43:27 作者：tonytfjing

本篇文章主要介紹了SpringMVC+MyBatis分頁，具有一定的參考價(jià)值，有興趣的可以了解一下。

目前主流的Web MVC框架，除了Struts這個(gè)主力外，還有Spring MVC，主要是由于Spring MVC配置比較簡(jiǎn)單，使用起來也十分明了，非常靈活，與Spring 集成較好，對(duì)RESTful API的支持也比struts要好。

MyBatis是ibatis的升級(jí)版，作為hibernate的老對(duì)手，它是一個(gè)可以自定義SQL、存儲(chǔ)過程和高級(jí)映射的持久層框架。

與hibernate的主要區(qū)別就是mybatis是半自動(dòng)化的，而hibernate是全自動(dòng)的，所以當(dāng)應(yīng)用需求越來越復(fù)雜的時(shí)候，自動(dòng)化的sql顯得比較笨拙。

由于前段時(shí)間接了個(gè)項(xiàng)目要用springmvc做，所以我抱著練手的態(tài)度，又玩起了整合框架的游戲。經(jīng)常搭框架的人應(yīng)該都清楚，框架搭建的核心就是配置文件。所以我主要貼下幾個(gè)配置文件的代碼。還是那句話，我都是寫好配置文件之后，運(yùn)行報(bào)錯(cuò)再加jar。這里列一下我用的jar包（應(yīng)該是最少的）：

備注：上圖有一些額外的jar，比如我用的數(shù)據(jù)庫連接池是阿里巴巴的druid、日志框架式logback，所以引入了相關(guān)jar。關(guān)于這兩個(gè)框架的使用和配置都是非常簡(jiǎn)單的，所以這里就不細(xì)說。

1.整合SpringMVC

springMybatis-servlet.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: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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 
   
    <!-- 啟用spring mvc 注解--> 
  <mvc:annotation-driven>  
  </mvc:annotation-driven> 
   
  <!-- 自動(dòng)掃描的包名 ，使Spring支持自動(dòng)檢測(cè)組件，如注解的Controller--> 
  <context:component-scan base-package="com.alibaba.controller" /> 
  <context:component-scan base-package="com.alibaba.service"/> 
   
   
  <!-- 視圖解析器:定義跳轉(zhuǎn)的文件的前后綴 -->  
  <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
    <property name="prefix" value="/WEB-INF/jsp/" />  
    <property name="suffix" value=".jsp" /> <!--可為空,方便實(shí)現(xiàn)自已的依據(jù)擴(kuò)展名來選擇視圖解釋類的邏輯 --> 
  </bean>  
 
  <!--配置攔截器, 多個(gè)攔截器,順序執(zhí)行 -->  
  <mvc:interceptors>  
    <mvc:interceptor>  
      <!-- 匹配的是url路徑 --> 
      <mvc:mapping path="/" /> 
      <mvc:mapping path="/user/**" /> 
      <mvc:mapping path="/test/**" /> 
       
      <bean class="com.alibaba.interceptor.CommonInterceptor"></bean>  
    </mvc:interceptor> 
    <!-- 當(dāng)設(shè)置多個(gè)攔截器時(shí)，先按順序調(diào)用preHandle方法，然后逆序調(diào)用每個(gè)攔截器的postHandle和afterCompletion方法 --> 
  </mvc:interceptors> 
    
</beans>

2.整合Mybatis

spring-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:mybatis="http://mybatis.org/schema/mybatis-spring" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 
    http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring.xsd 
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> 
   
  <!-- 該包下的類支持注解，表示會(huì)被當(dāng)作{@code mybatis mapper}處理 配置了之后表示可以自動(dòng)引入mapper類--> 
  <mybatis:scan base-package="com.alibaba.dao"/> 
  <!--引入屬性文件 --> 
  <context:property-placeholder location="classpath:configuration.properties"/> 
   
  <!--數(shù)據(jù)庫連接--> 
  <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">  
    <property name="url" value="${jdbc.url}" /> 
    <property name="username" value="${jdbc.username}"/> 
    <property name="password" value="${jdbc.password}"/> 
    <!-- 配置初始化大小、最小、最大 --> 
    <property name="initialSize"><value>1</value></property> 
    <property name="maxActive"><value>5</value></property> 
    <property name="minIdle"><value>1</value></property> 
    <!-- 配置獲取連接等待超時(shí)的時(shí)間 --> 
    <property name="maxWait"><value>60000</value></property> 
    <!-- 配置監(jiān)控統(tǒng)計(jì)攔截的filters --> 
    <property name="filters"><value>stat</value></property> 
    <!-- 配置間隔多久才進(jìn)行一次檢測(cè)，檢測(cè)需要關(guān)閉的空閑連接，單位是毫秒 --> 
    <property name="timeBetweenEvictionRunsMillis"><value>60000</value></property> 
    <!-- 配置一個(gè)連接在池中最小生存的時(shí)間，單位是毫秒 --> 
    <property name="minEvictableIdleTimeMillis"><value>300000</value></property> 
    <!-- 
    <property name="validationQuery"><value>SELECT 'x'</value></property> 
    <property name="testWhileIdle"><value>true</value></property> 
    <property name="testOnBorrow"><value>false</value></property> 
    <property name="testOnReturn"><value>false</value></property> 
    <property name="poolPreparedStatements"><value>true</value></property> 
    <property name="maxOpenPreparedStatements"><value>20</value></property> 
     --> 
  </bean> 
   
  <!-- mybatis配置 --> 
  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 
    <property name="dataSource" ref="dataSource" /> 
  </bean>  
</beans>

3.web.xml整合SpringMVC和Mybatis

<?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_3_0.xsd" version="3.0"> 
  <!--　該servlet為tomcat,jetty等容器提供,將靜態(tài)資源映射從/改為/static/目錄，如原來訪問　http://localhost/foo.css　,現(xiàn)在http://localhost/static/foo.css　--> 
  <!-- 不攔截靜態(tài)文件 --> 
  <servlet-mapping> 
    <servlet-name>default</servlet-name> 
    <url-pattern>/js/*</url-pattern> 
    <url-pattern>/css/*</url-pattern> 
    <url-pattern>/images/*</url-pattern> 
    <url-pattern>/fonts/*</url-pattern> 
  </servlet-mapping> 
   
  <!-- 配置字符集 --> 
  <filter> 
    <filter-name>encodingFilter</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>encodingFilter</filter-name> 
    <url-pattern>/*</url-pattern> 
  </filter-mapping> 
   
  <!-- 初始化 DispatcherServlet時(shí)，該框架在 web應(yīng)用程序WEB-INF目錄中尋找一個(gè)名為[servlet-名稱]-servlet.xml的文件， 
      并在那里定義相關(guān)的Beans，重寫在全局中定義的任何Beans --> 
  <servlet> 
    <servlet-name>springMybatis</servlet-name> 
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
    <load-on-startup>1</load-on-startup> 
  </servlet> 
  <servlet-mapping> 
    <servlet-name>springMybatis</servlet-name> 
    <!-- 所有的的請(qǐng)求，都會(huì)被DispatcherServlet處理 --> 
    <url-pattern>/</url-pattern> 
  </servlet-mapping> 
    
  <context-param> 
    <param-name>contextConfigLocation</param-name> 
    <param-value>/WEB-INF/config/spring-*.xml</param-value> 
  </context-param> 
  <listener> 
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
  </listener> 
  <!-- druid web 監(jiān)控 --> 
  <servlet> 
    <servlet-name>DruidStatView</servlet-name> 
    <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class> 
  </servlet> 
  <servlet-mapping> 
    <servlet-name>DruidStatView</servlet-name> 
    <url-pattern>/druid/*</url-pattern> 
  </servlet-mapping> 
   
  <error-page> 
    <error-code>404</error-code> 
    <location>/error/404.jsp</location> 
  </error-page> 
  <error-page> 
    <error-code>500</error-code> 
    <location>/error/500.jsp</location> 
  </error-page> 
</web-app>

4.logback.xml日志配置

<?xml version="1.0" encoding="UTF-8"?> 
<configuration> 
 
 <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"> 
  <encoder>  
    <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern> 
  </encoder> 
 </appender> 
  
 <logger name="test.LogbackTest" level="TRACE"/> 
  
 <logger name="com.alibaba.controller.TestController" level="TRACE"/> 
  
 <logger name="org.springframework.web.servlet.DispatcherServlet" level="DEBUG" /> 
 <logger name="druid.sql" level="INFO" /><!-- 如果spring-config里面沒有配置slf4j,就不會(huì)顯示sql日志，logback只是slf4j的一個(gè)實(shí)現(xiàn) --> 
 <root level="debug"> 
  <appender-ref ref="STDOUT" /> 
 </root> 
</configuration>

5.configuration.properties配置

jdbc.url=jdbc\:mysql\://localhost\:3306/druid?useUnicode\=true&characterEncoding\=UTF-8&zeroDateTimeBehavior\=convertToNull 
jdbc.username=root 
jdbc.password=123456

6.測(cè)試搭建是否成功，后臺(tái)代碼

首先是登錄，用了加密，可以去掉

package com.alibaba.controller;  
import javax.annotation.Resource; 
import javax.servlet.http.HttpServletRequest; 
 
import org.apache.commons.codec.digest.DigestUtils; 
import org.slf4j.Logger; 
import org.slf4j.LoggerFactory; 
import org.springframework.stereotype.Controller; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RequestMethod; 
import org.springframework.web.bind.annotation.RequestParam; 
 
import com.alibaba.model.User; 
import com.alibaba.service.UserService; 
import com.alibaba.util.RequestUtil; 
 
/** 
 * @author tfj 
 * 2014-7-26 
 */ 
@Controller 
public class SystemController { 
  private final Logger log = LoggerFactory.getLogger(SystemController.class); 
  @Resource 
  private UserService userService; 
   
  @RequestMapping(value = "/",method = RequestMethod.GET) 
  public String home() { 
    log.info("返回首頁！"); 
    return "index"; 
  } 
   
  @RequestMapping(value = "/test/hello",method = RequestMethod.GET) 
  public String testHello() { 
    log.info("執(zhí)行了testHello方法！"); 
    return "testHello"; 
  } 
   
  @RequestMapping(value = "/login",method = RequestMethod.POST) 
  public String testLogin(HttpServletRequest request,@RequestParam String username, @RequestParam String password) { 
    log.info("執(zhí)行了testLogin方法！"); 
    User user = userService.findUserByName(username); 
    if(user!=null){ 
      if(user.getPassword().equals(DigestUtils.md5Hex(password))){ 
        request.getSession().setAttribute("userId", user.getId());  
        request.getSession().setAttribute("user", username);  
        return "redirect:" + RequestUtil.retrieveSavedRequest();//跳轉(zhuǎn)至訪問頁面 
      }else{ 
        log.info("密碼錯(cuò)誤");  
        request.getSession().setAttribute("message", "用戶名密碼錯(cuò)誤，請(qǐng)重新登錄"); 
        return "login";  
      } 
    }else{ 
      log.info("用戶名不存在");  
      request.getSession().setAttribute("message", "用戶名不存在，請(qǐng)重新登錄"); 
      return "login";  
    } 
  } 
}

關(guān)于service和model就不寫了，寫一下mybatis的mapper類映射

<?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.alibaba.dao.UserMapper">   
  <select id="findUserByName" resultType="com.alibaba.model.User"> 
    select id, username , password from sysuser where username = #{username}  
  </select> 
</mapper>

7.前臺(tái)jsp主要是登錄和登錄成功的頁面，就不寫了

貼一下截圖：