mybatis+spring实现分页

重点是要实现interceptor的接口，然后在配置sqlSessionFactory设置configLocation的值指向classpath:MyBatis-Configuration.xml,MyBatis-Configuration.xml重点是设置<configuration>
<plugins>  

        <!-- 指定数据库分页方言Dialect, 其它方言:OracleDialect,SQLServerDialect,SybaseDialect,DB2Dialect,PostgreSQLDialect,MySQLDialect,DerbyDialect-->  

        <plugin interceptor="com.toone.core.framework.dao.page.OffsetLimitInterceptor">  

            <!--<property name="databaseType" value="mysql"/>  -->

        </plugin>

    </plugins>

</configuration>

来指定分页拦截器

拦截器的实现

package com.toone.core.framework.dao.page;

import java.util.Properties;

import org.apache.ibatis.executor.Executor;

import org.apache.ibatis.mapping.BoundSql;

import org.apache.ibatis.mapping.MappedStatement;

import org.apache.ibatis.mapping.MappedStatement.Builder;

import org.apache.ibatis.mapping.SqlSource;

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.session.ResultHandler;

import org.apache.ibatis.session.RowBounds;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import com.toone.core.utils.ArrayUtil;

/**

 * 参考网络实现

 * @author 刘正军

 *

 */

@Intercepts({ @Signature(type = Executor.class, method = "query", args = {
MappedStatement.class, Object.class, RowBounds.class,
ResultHandler.class }) })

public class OffsetLimitInterceptor implements Interceptor {
public static Logger LOG = LoggerFactory.getLogger(OffsetLimitInterceptor.class);
static int MAPPED_STATEMENT_INDEX = 0;
static int PARAMETER_INDEX = 1;
static int ROWBOUNDS_INDEX = 2;
static int RESULT_HANDLER_INDEX = 3;

Dialect dialect=new MySQLDialect();

public Object intercept(Invocation invocation) throws Throwable {
processIntercept(invocation.getArgs());
return invocation.proceed();
}

void processIntercept(final Object[] queryArgs) {
MappedStatement ms = (MappedStatement) queryArgs[MAPPED_STATEMENT_INDEX];
Object parameter = queryArgs[PARAMETER_INDEX];
final RowBounds rowBounds = (RowBounds) queryArgs[ROWBOUNDS_INDEX];
int offset = rowBounds.getOffset();
int limit = rowBounds.getLimit();

if (dialect.supportsLimit()
&& (offset != RowBounds.NO_ROW_OFFSET || limit != RowBounds.NO_ROW_LIMIT)) {
BoundSql boundSql = ms.getBoundSql(parameter);
String sql = boundSql.getSql().trim();
if (dialect.supportsLimitOffset()) {
sql = dialect.getLimitString(sql, offset, limit);
offset = RowBounds.NO_ROW_OFFSET;
} else {
sql = dialect.getLimitString(sql, 0, limit);
}
limit = RowBounds.NO_ROW_LIMIT;

queryArgs[ROWBOUNDS_INDEX] = new RowBounds(offset, limit);
BoundSql newBoundSql = new BoundSql(ms.getConfiguration(), sql,
boundSql.getParameterMappings(),
boundSql.getParameterObject());
MappedStatement newMs = copyFromMappedStatement(ms,
new BoundSqlSqlSource(newBoundSql));
queryArgs[MAPPED_STATEMENT_INDEX] = newMs;
}
}

private MappedStatement copyFromMappedStatement(MappedStatement ms,
SqlSource newSqlSource) {
Builder builder = new MappedStatement.Builder(ms.getConfiguration(),
ms.getId(), newSqlSource, ms.getSqlCommandType());
builder.resource(ms.getResource());
builder.fetchSize(ms.getFetchSize());
builder.statementType(ms.getStatementType());
builder.keyGenerator(ms.getKeyGenerator());
builder.keyProperty(ArrayUtil.arrayToString(ms.getKeyProperties()));
builder.timeout(ms.getTimeout());
builder.parameterMap(ms.getParameterMap());
builder.resultMaps(ms.getResultMaps());
builder.cache(ms.getCache());
MappedStatement newMs = builder.build();
return newMs;
}

public Object plugin(Object target) {
return Plugin.wrap(target, this);
}

public void setProperties(Properties properties) {  

   }  

public static class BoundSqlSqlSource implements SqlSource {
BoundSql boundSql;

public BoundSqlSqlSource(BoundSql boundSql) {
this.boundSql = boundSql;
}

public BoundSql getBoundSql(Object parameterObject) {
return boundSql;
}
}

}