本文为大家分享了mybatis分页效果展示的具体代码，供大家参考，具体内容如下
mybatis版本3.4以下
结构：
spring-mvc.xml
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
<?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"><!-- 自动扫描加载注解的包 --><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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
<?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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
<?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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
<?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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
|
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
参考网上的分页插件
pageinfo.java
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
package com.ij34.pages;import java.io.serializable;public class pageinfo implements serializable { private static final long serialversionuid = 587754556498974978l; //pagesize ，每一页显示多少 private int showcount = 9; //总页数 private int totalpage; //总记录数 private int totalresult; //当前页数 private int currentpage; //当前显示到的id, 在mysql limit 中就是第一个参数. 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，可以参考官方
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
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("总数sql 语句:"+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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
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); //制定视图，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\">上一页</a> <a href=\"%s\">下一页</a>", request.getrequesturi()+"?page="+(currentpage-1),request.getrequesturi()+"?page="+(currentpage+1) ); //制定视图，也就是list.jsp modelandview mav=new modelandview("list"); mav.addobject("articles",articles); mav.addobject("pagestr",pagestr); return mav; }/* public modelandview show(){//@requestparam 请求参数 list<article> articles=mapper.selectarticle(1); modelandview mav=new modelandview("list"); mav.addobject("articles", articles); return mav; }*/} |
webcontent
web.xml
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
<?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
|
1
2
3
4
5
6
7
8
9
10
11
12
|
<%@ 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" >不分页测试</a><br /><p /> <a href="article/pagelist" rel="external nofollow" >分页测试</a></body></html> |
list.jsp
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
<%@ 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> |
结果
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
