(转)Mybatis使用篇之十二：实现物理分页 http://chenjc-it.iteye.com/blog/1402965

转自http://chenjc-it.iteye.com/blog/1402965

Mybatis 物理分页 

Mybatis的自带分页方法只是逻辑分页，如果数据量很大，内存会溢出，不知道为什么开源组织不在里面实现类似Hibernate的物理分页处理方法。在不改动Mybatis源代码的情况下，怎么使Mybatis支持物理分页呢？下面我们来看看。

（1）新建一个Java类Dialect.java，该类的内容如下：

1. package org.mybatis.extend.interceptor;   
2.   
3. public abstract class Dialect {   
4.   
5.     public static enum Type{   
6.         MYSQL,   
7.         ORACLE   
8.     }   
9.        
10.     public abstract String getLimitString(String sql, int skipResults, int maxResults);   
11.        
12. }  

package org.mybatis.extend.interceptor;

public abstract class Dialect {

	public static enum Type{
		MYSQL,
		ORACLE
	}
	
	public abstract String getLimitString(String sql, int skipResults, int maxResults);
	
}

（2）新建一个Java类OracleDialect.java，该类继承Dialect 类，具体的内容如下：

Java代码  

1. package org.mybatis.extend.interceptor;   
2.   
3. public class OracleDialect extends Dialect{   
4.   
5.     /* (non-Javadoc)  
6.      * @see org.mybatis.extend.interceptor.IDialect#getLimitString(java.lang.String, int, int)  
7.      */  
8.     @Override  
9.     public String getLimitString(String sql, int offset, int limit) {   
10.   
11.         sql = sql.trim();   
12.         StringBuffer pagingSelect = new StringBuffer(sql.length() + 100);   
13.            
14.         pagingSelect.append("select * from ( select row_.*, rownum rownum_ from ( ");   
15.            
16.         pagingSelect.append(sql);   
17.            
18.         pagingSelect.append(" ) row_ ) where rownum_ > ").append(offset).append(" and rownum_ <= ").append(offset + limit);   
19.            
20.         return pagingSelect.toString();   
21.     }   
22.   
23. }  

package org.mybatis.extend.interceptor;

public class OracleDialect extends Dialect{

	/* (non-Javadoc)
	 * @see org.mybatis.extend.interceptor.IDialect#getLimitString(java.lang.String, int, int)
	 */
	@Override
	public String getLimitString(String sql, int offset, int limit) {

		sql = sql.trim();
		StringBuffer pagingSelect = new StringBuffer(sql.length() + 100);
		
		pagingSelect.append("select * from ( select row_.*, rownum rownum_ from ( ");
		
		pagingSelect.append(sql);
		
		pagingSelect.append(" ) row_ ) where rownum_ > ").append(offset).append(" and rownum_ <= ").append(offset + limit);
		
		return pagingSelect.toString();
	}

}

（3）新建一个Mybaits的拦截器PaginationInterceptor.java，实现Interceptor接口，该类的内容如下：

Java代码  

1. package org.mybatis.extend.interceptor;   
2.   
3. import java.sql.Connection;   
4. import java.util.Map;   
5. import java.util.Properties;   
6.   
7. import org.apache.ibatis.executor.parameter.DefaultParameterHandler;   
8. import org.apache.ibatis.executor.statement.StatementHandler;   
9. import org.apache.ibatis.mapping.BoundSql;   
10. import org.apache.ibatis.plugin.Interceptor;   
11. import org.apache.ibatis.plugin.Intercepts;   
12. import org.apache.ibatis.plugin.Invocation;   
13. import org.apache.ibatis.plugin.Plugin;   
14. import org.apache.ibatis.plugin.Signature;   
15. import org.apache.ibatis.reflection.MetaObject;   
16. import org.apache.ibatis.session.Configuration;   
17. import org.apache.ibatis.session.RowBounds;   
18. import org.slf4j.Logger;   
19. import org.slf4j.LoggerFactory;   
20.   
21.   
22. @Intercepts({@Signature(type=StatementHandler.class,method="prepare",args={Connection.class})})   
23. public class PaginationInterceptor implements Interceptor {   
24.     //日志对象   
25.     protected static Logger log = LoggerFactory.getLogger(PaginationInterceptor.class);   
26.     /* (non-Javadoc)  
27.      * @see org.apache.ibatis.plugin.Interceptor#intercept(org.apache.ibatis.plugin.Invocation)  
28.      */  
29.     @Override  
30.     public Object intercept(Invocation invocation) throws Throwable {   
31.         StatementHandler statementHandler = (StatementHandler)invocation.getTarget();   
32.         MetaObject metaStatementHandler = MetaObject.forObject(statementHandler);   
33.            
34.         RowBounds rowBounds = (RowBounds)metaStatementHandler.getValue("delegate.rowBounds");   
35.         if(rowBounds == null || rowBounds == RowBounds.DEFAULT){   
36.             return invocation.proceed();   
37.         }   
38.            
39.         DefaultParameterHandler defaultParameterHandler = (DefaultParameterHandler)metaStatementHandler.getValue("delegate.parameterHandler");   
40.         Map parameterMap = (Map)defaultParameterHandler.getParameterObject();   
41.         Object sidx = parameterMap.get("_sidx");   
42.         Object sord = parameterMap.get("_sord");   
43.            
44.         String originalSql = (String)metaStatementHandler.getValue("delegate.boundSql.sql");   
45.            
46.         if(sidx != null && sord != null){   
47.             originalSql = originalSql + " order by " + sidx + " " + sord;   
48.         }   
49.            
50.         Configuration configuration = (Configuration)metaStatementHandler.getValue("delegate.configuration");   
51.            
52.                             Dialect.Type databaseType  = null;   
53.         try{   
54.             databaseType = Dialect.Type.valueOf(configuration.getVariables().getProperty("dialect").toUpperCase());   
55.         } catch(Exception e){   
56.             //ignore   
57.         }   
58.         if(databaseType == null){   
59.             throw new RuntimeException("the value of the dialect property in configuration.xml is not defined : " + configuration.getVariables().getProperty("dialect"));   
60.         }   
61.         Dialect dialect = null;   
62.         switch(databaseType){   
63.             case ORACLE:   
64.                 dialect = new OracleDialect();   
65.                 break;   
66.             case MYSQL://需要实现MySQL的分页逻辑   
67.                 break;   
68.                    
69.         }   
70.            
71.            
72.         metaStatementHandler.setValue("delegate.boundSql.sql", dialect.getLimitString(originalSql, rowBounds.getOffset(), rowBounds.getLimit()) );   
73.         metaStatementHandler.setValue("delegate.rowBounds.offset", RowBounds.NO_ROW_OFFSET );   
74.         metaStatementHandler.setValue("delegate.rowBounds.limit", RowBounds.NO_ROW_LIMIT );   
75.         if(log.isDebugEnabled()){   
76.             BoundSql boundSql = statementHandler.getBoundSql();   
77.             log.debug("生成分页SQL : " + boundSql.getSql());   
78.         }   
79.         return invocation.proceed();   
80.     }   
81.   
82.     /* (non-Javadoc)  
83.      * @see org.apache.ibatis.plugin.Interceptor#plugin(java.lang.Object)  
84.      */  
85.     @Override  
86.     public Object plugin(Object target) {   
87.         return Plugin.wrap(target, this);   
88.     }   
89.   
90.     /* (non-Javadoc)  
91.      * @see org.apache.ibatis.plugin.Interceptor#setProperties(java.util.Properties)  
92.      */  
93.     @Override  
94.     public void setProperties(Properties arg0) {   
95.         // TODO Auto-generated method stub   
96.            
97.     }   
98.   
99. }  

package org.mybatis.extend.interceptor;

import java.sql.Connection;
import java.util.Map;
import java.util.Properties;

import org.apache.ibatis.executor.parameter.DefaultParameterHandler;
import org.apache.ibatis.executor.statement.StatementHandler;
import org.apache.ibatis.mapping.BoundSql;
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.session.Configuration;
import org.apache.ibatis.session.RowBounds;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


@Intercepts({@Signature(type=StatementHandler.class,method="prepare",args={Connection.class})})
public class PaginationInterceptor implements Interceptor {
	//日志对象
	protected static Logger log = LoggerFactory.getLogger(PaginationInterceptor.class);
	/* (non-Javadoc)
	 * @see org.apache.ibatis.plugin.Interceptor#intercept(org.apache.ibatis.plugin.Invocation)
	 */
	@Override
	public Object intercept(Invocation invocation) throws Throwable {
		StatementHandler statementHandler = (StatementHandler)invocation.getTarget();
		MetaObject metaStatementHandler = MetaObject.forObject(statementHandler);
		
		RowBounds rowBounds = (RowBounds)metaStatementHandler.getValue("delegate.rowBounds");
		if(rowBounds == null || rowBounds == RowBounds.DEFAULT){
			return invocation.proceed();
		}
		
		DefaultParameterHandler defaultParameterHandler = (DefaultParameterHandler)metaStatementHandler.getValue("delegate.parameterHandler");
		Map parameterMap = (Map)defaultParameterHandler.getParameterObject();
		Object sidx = parameterMap.get("_sidx");
		Object sord = parameterMap.get("_sord");
		
		String originalSql = (String)metaStatementHandler.getValue("delegate.boundSql.sql");
		
		if(sidx != null && sord != null){
			originalSql = originalSql + " order by " + sidx + " " + sord;
		}
		
		Configuration configuration = (Configuration)metaStatementHandler.getValue("delegate.configuration");
        
                            Dialect.Type databaseType  = null;
		try{
			databaseType = Dialect.Type.valueOf(configuration.getVariables().getProperty("dialect").toUpperCase());
		} catch(Exception e){
			//ignore
		}
		if(databaseType == null){
			throw new RuntimeException("the value of the dialect property in configuration.xml is not defined : " + configuration.getVariables().getProperty("dialect"));
		}
		Dialect dialect = null;
		switch(databaseType){
			case ORACLE:
				dialect = new OracleDialect();
				break;
			case MYSQL://需要实现MySQL的分页逻辑
				break;
				
		}
		
		
		metaStatementHandler.setValue("delegate.boundSql.sql", dialect.getLimitString(originalSql, rowBounds.getOffset(), rowBounds.getLimit()) );
		metaStatementHandler.setValue("delegate.rowBounds.offset", RowBounds.NO_ROW_OFFSET );
		metaStatementHandler.setValue("delegate.rowBounds.limit", RowBounds.NO_ROW_LIMIT );
		if(log.isDebugEnabled()){
			BoundSql boundSql = statementHandler.getBoundSql();
			log.debug("生成分页SQL : " + boundSql.getSql());
		}
		return invocation.proceed();
	}

	/* (non-Javadoc)
	 * @see org.apache.ibatis.plugin.Interceptor#plugin(java.lang.Object)
	 */
	@Override
	public Object plugin(Object target) {
		return Plugin.wrap(target, this);
	}

	/* (non-Javadoc)
	 * @see org.apache.ibatis.plugin.Interceptor#setProperties(java.util.Properties)
	 */
	@Override
	public void setProperties(Properties arg0) {
		// TODO Auto-generated method stub
		
	}

}

 （4）将Mybatis的拦截器配置到Mybatis的全局配置文件(mybatis.cfg.xml)中，具体如下：

Java代码  

1. <?xml version="1.0" encoding="UTF-8" ?>   
2.   
3. <!DOCTYPE configuration PUBLIC    
4.     "-//mybatis.org//DTD Config 3.0//EN"  
5.     "http://mybatis.org/dtd/mybatis-3-config.dtd">   
6.   
7. <configuration>   
8.     <properties>   
9.               <property name="dialect" value="oracle"/>   
10.     </properties>   
11.            
12.     <plugins>   
13.             <plugin interceptor="org.mybatis.extend.interceptor.PaginationInterceptor"/>   
14.     </plugins>   
15.           
16. </configuration>  

<?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>
	<properties>
    	      <property name="dialect" value="oracle"/>
	</properties>
	    
 	<plugins>
	        <plugin interceptor="org.mybatis.extend.interceptor.PaginationInterceptor"/>
	</plugins>
	   
</configuration>

（5）使用方法同Mybatis逻辑分页一样，拦截器会自动拦截执行SQL的地方，加上分页代码：

Java代码  

1. getSqlSession().selectList(sqlId, paramMap,new RowBounds(pageId, pageSize));  

Mybatis的自带分页方法只是逻辑分页，如果数据量很大，内存会溢出，不知道为什么开源组织不在里面实现类似Hibernate的物理分页处理方法。在不改动Mybatis源代码的情况下，怎么使Mybatis支持物理分页呢？下面我们来看看。

（1）新建一个Java类Dialect.java，该类的内容如下：

1. package org.mybatis.extend.interceptor;   
2.   
3. public abstract class Dialect {   
4.   
5.     public static enum Type{   
6.         MYSQL,   
7.         ORACLE   
8.     }   
9.        
10.     public abstract String getLimitString(String sql, int skipResults, int maxResults);   
11.        
12. }  

package org.mybatis.extend.interceptor;

public abstract class Dialect {

	public static enum Type{
		MYSQL,
		ORACLE
	}
	
	public abstract String getLimitString(String sql, int skipResults, int maxResults);
	
}

（2）新建一个Java类OracleDialect.java，该类继承Dialect 类，具体的内容如下：

Java代码  

1. package org.mybatis.extend.interceptor;   
2.   
3. public class OracleDialect extends Dialect{   
4.   
5.     /* (non-Javadoc)  
6.      * @see org.mybatis.extend.interceptor.IDialect#getLimitString(java.lang.String, int, int)  
7.      */  
8.     @Override  
9.     public String getLimitString(String sql, int offset, int limit) {   
10.   
11.         sql = sql.trim();   
12.         StringBuffer pagingSelect = new StringBuffer(sql.length() + 100);   
13.            
14.         pagingSelect.append("select * from ( select row_.*, rownum rownum_ from ( ");   
15.            
16.         pagingSelect.append(sql);   
17.            
18.         pagingSelect.append(" ) row_ ) where rownum_ > ").append(offset).append(" and rownum_ <= ").append(offset + limit);   
19.            
20.         return pagingSelect.toString();   
21.     }   
22.   
23. }  

package org.mybatis.extend.interceptor;

public class OracleDialect extends Dialect{

	/* (non-Javadoc)
	 * @see org.mybatis.extend.interceptor.IDialect#getLimitString(java.lang.String, int, int)
	 */
	@Override
	public String getLimitString(String sql, int offset, int limit) {

		sql = sql.trim();
		StringBuffer pagingSelect = new StringBuffer(sql.length() + 100);
		
		pagingSelect.append("select * from ( select row_.*, rownum rownum_ from ( ");
		
		pagingSelect.append(sql);
		
		pagingSelect.append(" ) row_ ) where rownum_ > ").append(offset).append(" and rownum_ <= ").append(offset + limit);
		
		return pagingSelect.toString();
	}

}

（3）新建一个Mybaits的拦截器PaginationInterceptor.java，实现Interceptor接口，该类的内容如下：

Java代码  

1. package org.mybatis.extend.interceptor;   
2.   
3. import java.sql.Connection;   
4. import java.util.Map;   
5. import java.util.Properties;   
6.   
7. import org.apache.ibatis.executor.parameter.DefaultParameterHandler;   
8. import org.apache.ibatis.executor.statement.StatementHandler;   
9. import org.apache.ibatis.mapping.BoundSql;   
10. import org.apache.ibatis.plugin.Interceptor;   
11. import org.apache.ibatis.plugin.Intercepts;   
12. import org.apache.ibatis.plugin.Invocation;   
13. import org.apache.ibatis.plugin.Plugin;   
14. import org.apache.ibatis.plugin.Signature;   
15. import org.apache.ibatis.reflection.MetaObject;   
16. import org.apache.ibatis.session.Configuration;   
17. import org.apache.ibatis.session.RowBounds;   
18. import org.slf4j.Logger;   
19. import org.slf4j.LoggerFactory;   
20.   
21.   
22. @Intercepts({@Signature(type=StatementHandler.class,method="prepare",args={Connection.class})})   
23. public class PaginationInterceptor implements Interceptor {   
24.     //日志对象   
25.     protected static Logger log = LoggerFactory.getLogger(PaginationInterceptor.class);   
26.     /* (non-Javadoc)  
27.      * @see org.apache.ibatis.plugin.Interceptor#intercept(org.apache.ibatis.plugin.Invocation)  
28.      */  
29.     @Override  
30.     public Object intercept(Invocation invocation) throws Throwable {   
31.         StatementHandler statementHandler = (StatementHandler)invocation.getTarget();   
32.         MetaObject metaStatementHandler = MetaObject.forObject(statementHandler);   
33.            
34.         RowBounds rowBounds = (RowBounds)metaStatementHandler.getValue("delegate.rowBounds");   
35.         if(rowBounds == null || rowBounds == RowBounds.DEFAULT){   
36.             return invocation.proceed();   
37.         }   
38.            
39.         DefaultParameterHandler defaultParameterHandler = (DefaultParameterHandler)metaStatementHandler.getValue("delegate.parameterHandler");   
40.         Map parameterMap = (Map)defaultParameterHandler.getParameterObject();   
41.         Object sidx = parameterMap.get("_sidx");   
42.         Object sord = parameterMap.get("_sord");   
43.            
44.         String originalSql = (String)metaStatementHandler.getValue("delegate.boundSql.sql");   
45.            
46.         if(sidx != null && sord != null){   
47.             originalSql = originalSql + " order by " + sidx + " " + sord;   
48.         }   
49.            
50.         Configuration configuration = (Configuration)metaStatementHandler.getValue("delegate.configuration");   
51.            
52.                             Dialect.Type databaseType  = null;   
53.         try{   
54.             databaseType = Dialect.Type.valueOf(configuration.getVariables().getProperty("dialect").toUpperCase());   
55.         } catch(Exception e){   
56.             //ignore   
57.         }   
58.         if(databaseType == null){   
59.             throw new RuntimeException("the value of the dialect property in configuration.xml is not defined : " + configuration.getVariables().getProperty("dialect"));   
60.         }   
61.         Dialect dialect = null;   
62.         switch(databaseType){   
63.             case ORACLE:   
64.                 dialect = new OracleDialect();   
65.                 break;   
66.             case MYSQL://需要实现MySQL的分页逻辑   
67.                 break;   
68.                    
69.         }   
70.            
71.            
72.         metaStatementHandler.setValue("delegate.boundSql.sql", dialect.getLimitString(originalSql, rowBounds.getOffset(), rowBounds.getLimit()) );   
73.         metaStatementHandler.setValue("delegate.rowBounds.offset", RowBounds.NO_ROW_OFFSET );   
74.         metaStatementHandler.setValue("delegate.rowBounds.limit", RowBounds.NO_ROW_LIMIT );   
75.         if(log.isDebugEnabled()){   
76.             BoundSql boundSql = statementHandler.getBoundSql();   
77.             log.debug("生成分页SQL : " + boundSql.getSql());   
78.         }   
79.         return invocation.proceed();   
80.     }   
81.   
82.     /* (non-Javadoc)  
83.      * @see org.apache.ibatis.plugin.Interceptor#plugin(java.lang.Object)  
84.      */  
85.     @Override  
86.     public Object plugin(Object target) {   
87.         return Plugin.wrap(target, this);   
88.     }   
89.   
90.     /* (non-Javadoc)  
91.      * @see org.apache.ibatis.plugin.Interceptor#setProperties(java.util.Properties)  
92.      */  
93.     @Override  
94.     public void setProperties(Properties arg0) {   
95.         // TODO Auto-generated method stub   
96.            
97.     }   
98.   
99. }  

package org.mybatis.extend.interceptor;

import java.sql.Connection;
import java.util.Map;
import java.util.Properties;

import org.apache.ibatis.executor.parameter.DefaultParameterHandler;
import org.apache.ibatis.executor.statement.StatementHandler;
import org.apache.ibatis.mapping.BoundSql;
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.session.Configuration;
import org.apache.ibatis.session.RowBounds;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


@Intercepts({@Signature(type=StatementHandler.class,method="prepare",args={Connection.class})})
public class PaginationInterceptor implements Interceptor {
	//日志对象
	protected static Logger log = LoggerFactory.getLogger(PaginationInterceptor.class);
	/* (non-Javadoc)
	 * @see org.apache.ibatis.plugin.Interceptor#intercept(org.apache.ibatis.plugin.Invocation)
	 */
	@Override
	public Object intercept(Invocation invocation) throws Throwable {
		StatementHandler statementHandler = (StatementHandler)invocation.getTarget();
		MetaObject metaStatementHandler = MetaObject.forObject(statementHandler);
		
		RowBounds rowBounds = (RowBounds)metaStatementHandler.getValue("delegate.rowBounds");
		if(rowBounds == null || rowBounds == RowBounds.DEFAULT){
			return invocation.proceed();
		}
		
		DefaultParameterHandler defaultParameterHandler = (DefaultParameterHandler)metaStatementHandler.getValue("delegate.parameterHandler");
		Map parameterMap = (Map)defaultParameterHandler.getParameterObject();
		Object sidx = parameterMap.get("_sidx");
		Object sord = parameterMap.get("_sord");
		
		String originalSql = (String)metaStatementHandler.getValue("delegate.boundSql.sql");
		
		if(sidx != null && sord != null){
			originalSql = originalSql + " order by " + sidx + " " + sord;
		}
		
		Configuration configuration = (Configuration)metaStatementHandler.getValue("delegate.configuration");
        
                            Dialect.Type databaseType  = null;
		try{
			databaseType = Dialect.Type.valueOf(configuration.getVariables().getProperty("dialect").toUpperCase());
		} catch(Exception e){
			//ignore
		}
		if(databaseType == null){
			throw new RuntimeException("the value of the dialect property in configuration.xml is not defined : " + configuration.getVariables().getProperty("dialect"));
		}
		Dialect dialect = null;
		switch(databaseType){
			case ORACLE:
				dialect = new OracleDialect();
				break;
			case MYSQL://需要实现MySQL的分页逻辑
				break;
				
		}
		
		
		metaStatementHandler.setValue("delegate.boundSql.sql", dialect.getLimitString(originalSql, rowBounds.getOffset(), rowBounds.getLimit()) );
		metaStatementHandler.setValue("delegate.rowBounds.offset", RowBounds.NO_ROW_OFFSET );
		metaStatementHandler.setValue("delegate.rowBounds.limit", RowBounds.NO_ROW_LIMIT );
		if(log.isDebugEnabled()){
			BoundSql boundSql = statementHandler.getBoundSql();
			log.debug("生成分页SQL : " + boundSql.getSql());
		}
		return invocation.proceed();
	}

	/* (non-Javadoc)
	 * @see org.apache.ibatis.plugin.Interceptor#plugin(java.lang.Object)
	 */
	@Override
	public Object plugin(Object target) {
		return Plugin.wrap(target, this);
	}

	/* (non-Javadoc)
	 * @see org.apache.ibatis.plugin.Interceptor#setProperties(java.util.Properties)
	 */
	@Override
	public void setProperties(Properties arg0) {
		// TODO Auto-generated method stub
		
	}

}

 （4）将Mybatis的拦截器配置到Mybatis的全局配置文件(mybatis.cfg.xml)中，具体如下：

Java代码  

1. <?xml version="1.0" encoding="UTF-8" ?>   
2.   
3. <!DOCTYPE configuration PUBLIC    
4.     "-//mybatis.org//DTD Config 3.0//EN"  
5.     "http://mybatis.org/dtd/mybatis-3-config.dtd">   
6.   
7. <configuration>   
8.     <properties>   
9.               <property name="dialect" value="oracle"/>   
10.     </properties>   
11.            
12.     <plugins>   
13.             <plugin interceptor="org.mybatis.extend.interceptor.PaginationInterceptor"/>   
14.     </plugins>   
15.           
16. </configuration>  

<?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>
	<properties>
    	      <property name="dialect" value="oracle"/>
	</properties>
	    
 	<plugins>
	        <plugin interceptor="org.mybatis.extend.interceptor.PaginationInterceptor"/>
	</plugins>
	   
</configuration>

（5）使用方法同Mybatis逻辑分页一样，拦截器会自动拦截执行SQL的地方，加上分页代码：

Java代码  

1. getSqlSession().selectList(sqlId, paramMap,new RowBounds(pageId, pageSize));