本文為大家分享了mybatis分頁效果展示的具體代碼，供大家參考，具體內(nèi)容如下
mybatis版本3.4以下
結(jié)構(gòu)：
spring-mvc.xml
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<?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xsi:schemalocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd"><!-- 自動(dòng)掃描加載注解的包 --><context:component-scan base-package="com.ij34.bean"/><bean id="viewresolver" class="org.springframework.web.servlet.view.internalresourceviewresolver"> <property name="prefix" value="/web-inf/view/"></property><property name="suffix" value=".jsp" ></property></bean></beans> |
com.ij34.mybatis
applicationcontext.xml
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<?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" xsi:schemalocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd" default-autowire="byname" default-lazy-init="false"> <!-- showcase's customfreemarkermanager example --> <bean id="datasource" class="org.apache.commons.dbcp2.basicdatasource"> <property name="driverclassname" value="com.mysql.jdbc.driver"></property> <property name="url" value="jdbc:mysql://localhost:3306/mybatis"></property> <property name="username" value="root"></property> <property name="password" value="123456"></property> </bean> <bean id="transactionmanager" class="org.springframework.jdbc.datasource.datasourcetransactionmanager"> <property name="datasource" ref="datasource" /> </bean> <bean id="sqlsessionfactory" class="org.mybatis.spring.sqlsessionfactorybean"> <property name="datasource" ref="datasource"></property> <property name="configlocation" value="classpath:com/ij34/mybatis/mybatis-config.xml"></property> <property name="mapperlocations" value="classpath:com/ij34/mybatis/usermapper.xml"></property> </bean><bean class="org.mybatis.spring.mapper.mapperscannerconfigurer"> <property name="basepackage" value="com.ij34.model"></property> <property name="sqlsessionfactory" ref="sqlsessionfactory" /> </bean></beans> |
mybatis-config.xml
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<?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><typealiases><typealias type="com.ij34.model.article" alias="article"/><typealias type="com.ij34.model.user" alias="user"/><typealias type="com.ij34.pages.pageinfo" alias="pageinfo"/></typealiases> <plugins> <plugin interceptor="com.ij34.pages.pageplugin"> <property name="dialect" value="mysql" /> <property name="pagesqlid" value=".*listpage.*" /> </plugin> </plugins></configuration> |
usermapper.xml
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<?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.ij34.model.usermapper"><resultmap type="article" id="resultaticlelist"> <id property="id" column="aid"/> <result property="title" column="title"/> <result property="content" column="content"/> <association property="user" javatype="user"> <id property="id" column="id"/> <result property="name" column="name"/> <result property="age" column="age"/> </association> </resultmap> <select id="selectarticle" parametertype="int" resultmap="resultaticlelist"> select users.id,users.name,users.age,article.id aid,article.title,article.content from users,article where users.id=article.userid and users.id=#{id} </select> <select id="listpage" resultmap="resultaticlelist"> select users.id,users.name,users.age,article.id aid,article.title,article.content from users,article where users.id=article.userid and users.id=#{userid} </select> </mapper> |
com.ij34.model
user.java
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package com.ij34.model;public class user { private int id; private string name; private int age; public int getid() { return id;}public void setid(int id) { this.id = id;}public string getname() { return name;}public void setname(string name) { this.name = name;}public int getage() { return age;}public void setage(int age) { this.age = age;}public string tostring() { return "user [id=" + id + ", name=" + name + ", age=" + age + "]";}} |
article.java
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package com.ij34.model;public class article { private int id; private user user; private string title; private string content; public string getcontent() { return content;}public void setcontent(string content) { this.content = content;}public int getid() { return id;}public void setid(int id) { this.id = id;}public user getuser() { return user;}public void setuser(user user) { this.user = user;}public string gettitle() { return title;}public void settitle(string title) { this.title = title;} } |
usermapper.java
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package com.ij34.model;import java.util.list;import org.apache.ibatis.annotations.param;import com.ij34.pages.pageinfo;public interface usermapper { public list<article> selectarticle(int id); public list<article> listpage(@param("page") pageinfo page,@param("userid") int userid);} |
com.ij34.pages
參考網(wǎng)上的分頁插件
pageinfo.java
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package com.ij34.pages;import java.io.serializable;public class pageinfo implements serializable { private static final long serialversionuid = 587754556498974978l; //pagesize ，每一頁顯示多少 private int showcount = 9; //總頁數(shù) private int totalpage; //總記錄數(shù) private int totalresult; //當(dāng)前頁數(shù) private int currentpage; //當(dāng)前顯示到的id, 在mysql limit 中就是第一個(gè)參數(shù). private int currentresult; private string sortfield; private string order; public int getshowcount() { return showcount; } public void setshowcount(int showcount) { this.showcount = showcount; } public int gettotalpage() { return totalpage; } public void settotalpage(int totalpage) { this.totalpage = totalpage; } public int gettotalresult() { return totalresult; } public void settotalresult(int totalresult) { this.totalresult = totalresult; } public int getcurrentpage() { return currentpage; } public void setcurrentpage(int currentpage) { this.currentpage = currentpage; } public int getcurrentresult() { return currentresult; } public void setcurrentresult(int currentresult) { this.currentresult = currentresult; } public string getsortfield() { return sortfield; } public void setsortfield(string sortfield) { this.sortfield = sortfield; } public string getorder() { return order; } public void setorder(string order) { this.order = order; } } |
pageplugin.java
@intercepts({ @signature(type = statementhandler.class, method = "prepare", args = { connection.class }) })
要用3.4以下版本，可以參考官方
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package com.ij34.pages;import java.lang.reflect.field;import java.sql.connection;import java.sql.preparedstatement;import java.sql.resultset;import java.sql.sqlexception;import java.util.list;import java.util.map;import java.util.properties;import javax.xml.bind.propertyexception;import org.apache.ibatis.executor.errorcontext;import org.apache.ibatis.executor.executorexception;import org.apache.ibatis.executor.statement.basestatementhandler;import org.apache.ibatis.executor.statement.routingstatementhandler;import org.apache.ibatis.executor.statement.statementhandler;import org.apache.ibatis.mapping.boundsql;import org.apache.ibatis.mapping.mappedstatement;import org.apache.ibatis.mapping.parametermapping;import org.apache.ibatis.mapping.parametermode;import org.apache.ibatis.plugin.interceptor;import org.apache.ibatis.plugin.intercepts;import org.apache.ibatis.plugin.invocation;import org.apache.ibatis.plugin.plugin;import org.apache.ibatis.plugin.signature;import org.apache.ibatis.reflection.metaobject;import org.apache.ibatis.reflection.property.propertytokenizer;import org.apache.ibatis.scripting.xmltags.foreachsqlnode;import org.apache.ibatis.session.configuration;import org.apache.ibatis.type.typehandler;import org.apache.ibatis.type.typehandlerregistry;@intercepts({ @signature(type = statementhandler.class, method = "prepare", args = { connection.class }) })public class pageplugin implements interceptor { private static string dialect = ""; private static string pagesqlid = ""; @suppresswarnings("unchecked") public object intercept(invocation ivk) throws throwable { if (ivk.gettarget() instanceof routingstatementhandler) { routingstatementhandler statementhandler = (routingstatementhandler) ivk .gettarget(); basestatementhandler delegate = (basestatementhandler) reflecthelper .getvaluebyfieldname(statementhandler, "delegate"); mappedstatement mappedstatement = (mappedstatement) reflecthelper .getvaluebyfieldname(delegate, "mappedstatement"); if (mappedstatement.getid().matches(pagesqlid)) { boundsql boundsql = delegate.getboundsql(); object parameterobject = boundsql.getparameterobject(); if (parameterobject == null) { throw new nullpointerexception("parameterobject error"); } else { connection connection = (connection) ivk.getargs()[0]; string sql = boundsql.getsql(); string countsql = "select count(0) from (" + sql + ") mycount"; system.out.println("總數(shù)sql 語句:"+countsql); preparedstatement countstmt = connection .preparestatement(countsql); boundsql countbs = new boundsql( mappedstatement.getconfiguration(), countsql, boundsql.getparametermappings(), parameterobject); setparameters(countstmt, mappedstatement, countbs, parameterobject); resultset rs = countstmt.executequery(); int count = 0; if (rs.next()) { count = rs.getint(1); } rs.close(); countstmt.close(); pageinfo page = null; if (parameterobject instanceof pageinfo) { page = (pageinfo) parameterobject; page.settotalresult(count); } else if(parameterobject instanceof map){ map<string, object> map = (map<string, object>)parameterobject; page = (pageinfo)map.get("page"); if(page == null) page = new pageinfo(); page.settotalresult(count); }else { field pagefield = reflecthelper.getfieldbyfieldname( parameterobject, "page"); if (pagefield != null) { page = (pageinfo) reflecthelper.getvaluebyfieldname( parameterobject, "page"); if (page == null) page = new pageinfo(); page.settotalresult(count); reflecthelper.setvaluebyfieldname(parameterobject, "page", page); } else { throw new nosuchfieldexception(parameterobject .getclass().getname()); } } string pagesql = generatepagesql(sql, page); system.out.println("page sql:"+pagesql); reflecthelper.setvaluebyfieldname(boundsql, "sql", pagesql); } } } return ivk.proceed(); } private void setparameters(preparedstatement ps, mappedstatement mappedstatement, boundsql boundsql, object parameterobject) throws sqlexception { errorcontext.instance().activity("setting parameters") .object(mappedstatement.getparametermap().getid()); list<parametermapping> parametermappings = boundsql .getparametermappings(); if (parametermappings != null) { configuration configuration = mappedstatement.getconfiguration(); typehandlerregistry typehandlerregistry = configuration .gettypehandlerregistry(); metaobject metaobject = parameterobject == null ? null : configuration.newmetaobject(parameterobject); for (int i = 0; i < parametermappings.size(); i++) { parametermapping parametermapping = parametermappings.get(i); if (parametermapping.getmode() != parametermode.out) { object value; string propertyname = parametermapping.getproperty(); propertytokenizer prop = new propertytokenizer(propertyname); if (parameterobject == null) { value = null; } else if (typehandlerregistry .hastypehandler(parameterobject.getclass())) { value = parameterobject; } else if (boundsql.hasadditionalparameter(propertyname)) { value = boundsql.getadditionalparameter(propertyname); } else if (propertyname .startswith(foreachsqlnode.item_prefix) && boundsql.hasadditionalparameter(prop.getname())) { value = boundsql.getadditionalparameter(prop.getname()); if (value != null) { value = configuration.newmetaobject(value) .getvalue( propertyname.substring(prop .getname().length())); } } else { value = metaobject == null ? null : metaobject .getvalue(propertyname); } typehandler typehandler = parametermapping.gettypehandler(); if (typehandler == null) { throw new executorexception( "there was no typehandler found for parameter " + propertyname + " of statement " + mappedstatement.getid()); } typehandler.setparameter(ps, i + 1, value, parametermapping.getjdbctype()); } } } } private string generatepagesql(string sql, pageinfo page) { if (page != null && (dialect !=null || !dialect.equals(""))) { stringbuffer pagesql = new stringbuffer(); if ("mysql".equals(dialect)) { pagesql.append(sql); pagesql.append(" limit " + page.getcurrentresult() + "," + page.getshowcount()); } else if ("oracle".equals(dialect)) { pagesql.append("select * from (select tmp_tb.*,rownum row_id from ("); pagesql.append(sql); pagesql.append(") tmp_tb where rownum<="); pagesql.append(page.getcurrentresult() + page.getshowcount()); pagesql.append(") where row_id>"); pagesql.append(page.getcurrentresult()); } return pagesql.tostring(); } else { return sql; } } public object plugin(object arg0) { // todo auto-generated method stub return plugin.wrap(arg0, this); } public void setproperties(properties p) { dialect = p.getproperty("dialect"); if (dialect ==null || dialect.equals("")) { try { throw new propertyexception("dialect property is not found!"); } catch (propertyexception e) { // todo auto-generated catch block e.printstacktrace(); } } pagesqlid = p.getproperty("pagesqlid"); if (dialect ==null || dialect.equals("")) { try { throw new propertyexception("pagesqlid property is not found!"); } catch (propertyexception e) { // todo auto-generated catch block e.printstacktrace(); } } }} |
reflecthelper.java
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package com.ij34.pages;import java.lang.reflect.field;public class reflecthelper { public static field getfieldbyfieldname(object obj, string fieldname) { for (class<?> superclass = obj.getclass(); superclass != object.class; superclass = superclass .getsuperclass()) { try { return superclass.getdeclaredfield(fieldname); } catch (nosuchfieldexception e) { } } return null; } public static object getvaluebyfieldname(object obj, string fieldname) throws securityexception, nosuchfieldexception, illegalargumentexception, illegalaccessexception { field field = getfieldbyfieldname(obj, fieldname); object value = null; if(field!=null){ if (field.isaccessible()) { value = field.get(obj); } else { field.setaccessible(true); value = field.get(obj); field.setaccessible(false); } } return value; } public static void setvaluebyfieldname(object obj, string fieldname, object value) throws securityexception, nosuchfieldexception, illegalargumentexception, illegalaccessexception { field field = obj.getclass().getdeclaredfield(fieldname); if (field.isaccessible()) { field.set(obj, value); } else { field.setaccessible(true); field.set(obj, value); field.setaccessible(false); } } } |
com.ij34.bean
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package com.ij34.bean;import java.util.list;import javax.servlet.http.httpservletrequest;import javax.servlet.http.httpservletresponse;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 com.ij34.model.*;import com.ij34.pages.pageinfo;@controller@requestmapping("/article")public class test { @autowired usermapper mapper; @requestmapping("/list") public modelandview listall(httpservletrequest request,httpservletresponse response){ list<article> articles=mapper.selectarticle(1); //制定視圖，也就是list.jsp modelandview mav=new modelandview("list"); mav.addobject("articles",articles); return mav; } @requestmapping("/pagelist") public modelandview pagelist(httpservletrequest request,httpservletresponse response){ int currentpage = request.getparameter("page")==null?1:integer.parseint(request.getparameter("page")); int pagesize = 9; if (currentpage<=1){ currentpage =1; } int currentresult = (currentpage-1) * pagesize; system.out.println(request.getrequesturi()); system.out.println(request.getquerystring()); pageinfo page = new pageinfo(); page.setshowcount(pagesize); page.setcurrentresult(currentresult); list<article> articles=mapper.listpage(page,1); system.out.println(page); int totalcount = page.gettotalresult(); int lastpage=0; if (totalcount % pagesize==0){ lastpage = totalcount % pagesize; } else{ lastpage =1+ totalcount / pagesize; } if (currentpage>=lastpage){ currentpage =lastpage; } string pagestr = ""; pagestr=string.format("<a href=\"%s\">上一頁</a> <a href=\"%s\">下一頁</a>", request.getrequesturi()+"?page="+(currentpage-1),request.getrequesturi()+"?page="+(currentpage+1) ); //制定視圖，也就是list.jsp modelandview mav=new modelandview("list"); mav.addobject("articles",articles); mav.addobject("pagestr",pagestr); return mav; }/* public modelandview show(){//@requestparam 請(qǐng)求參數(shù) list<article> articles=mapper.selectarticle(1); modelandview mav=new modelandview("list"); mav.addobject("articles", articles); return mav; }*/} |
webcontent
web.xml
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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>mybatis_springmvc</display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <context-param> <param-name>contextconfiglocation</param-name> <param-value>classpath:com/ij34/mybatis/applicationcontext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.contextloaderlistener</listener-class> </listener> <listener> <listener-class> org.springframework.web.context.contextcleanuplistener</listener-class> </listener> <servlet> <servlet-name>springdispatcherservlet</servlet-name> <servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class> <init-param> <param-name>contextconfiglocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springdispatcherservlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <filter> <filter-name>characterencodingfilter</filter-name> <filter-class>org.springframework.web.filter.characterencodingfilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>utf8</param-value> </init-param> <init-param> <param-name>forceencoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>characterencodingfilter</filter-name> <url-pattern>*</url-pattern> </filter-mapping></web-app> |
index.jsp
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<%@ page language="java" contenttype="text/html; charset=utf-8" pageencoding="utf-8"%><html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"><title>insert title here</title></head><body> <a href="article/list" rel="external nofollow" >不分頁測(cè)試</a><br /><p /> <a href="article/pagelist" rel="external nofollow" >分頁測(cè)試</a></body></html> |
list.jsp
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<%@ page language="java" contenttype="text/html; charset=utf-8" pageencoding="utf-8"%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><!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><table><c:foreach var="article" items="${articles}"><tr><td>${article.id} |</td><td> ${article.title}|</td><td> ${article.content}|</td><td>${article.user}</td> </tr> </c:foreach></table><h4>${pagestr}</h4></body></html> |
結(jié)果
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持服務(wù)器之家。
