最近闲来没事，做了个struts2+ibatis+spring入门例子 数据库用的是oracle 10。表是scott.emp和scott.dept两张表 级联查询（详细了解 ibatis in action）本例子采用的是后者
dao封装
package com.huasoft.common.dao;
import java.io.Serializable;
import java.util.List;
import java.util.Map;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
/**
* 类 编 号： 类 名 称：IBaseDao.java 内容摘要:DAO层封装接口，包含常用的CURD和分页操作 完成日期：2014-3-26
* 编码作者：马彪
*/
public abstract interface BaseDao<T> {
/*分页查询*/
QueryResult<T> pagedQuery(Map<String, Object> searchParams, Integer pageNumber,Integer pageSize, final String statementId);
}
package com.huasoft.common.dao;
import java.io.Serializable;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;
import org.apache.log4j.Logger;
import org.apache.poi.util.StringUtil;
import org.springframework.orm.ibatis.SqlMapClientCallback;
import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import com.ibatis.sqlmap.client.SqlMapExecutor;
/**
* 类 编 号：
* 类 名 称：BaseDaoSupport.java
* 内容摘要:DAO层封装使用了泛型，包含常用的CURD和分页操作
* 完成日期：2014-03-26 编码作者：马彪
*/
@SuppressWarnings("unchecked")
public class BaseDaoImpl<T> extends SqlMapClientDaoSupport implements BaseDao<T> {
private static Logger log=Logger.getLogger(BaseDaoImpl.class);
/*
* 分页查询
* */
public QueryResult<T> pagedQuery(Map<String, Object> searchParams, Integer pageNumber,Integer pageSize, final String statementId)
{
//if(pageNumber==null)pageNumber=1;
Integer total=(Integer)getSqlMapClientTemplate().queryForObject(statementId, searchParams);
Pageable page=buildPageRequest(pageNumber,pageSize);
searchParams.put("offset",(pageNumber-1)*pageSize);
searchParams.put("limit",page.getOffset());
List list=getSqlMapClientTemplate().queryForList(statementId, searchParams);
Page pagination=new PageImpl(list,page,total);
QueryResult queryResult=new QueryResult<T>();
queryResult.setContent(pagination.getContent());
queryResult.setTotal(total);
queryResult.setTotalpages(pagination.getTotalPages());
return queryResult;
}
private PageRequest buildPageRequest(Integer pageNumber, Integer pageSize)
{
return new PageRequest(pageNumber, pageSize);
}
}
分页查询辅助类
package com.huasoft.common.dao;
import java.util.List;
public class QueryResult<T>
{
private List<T> content;
private Integer total;
private Integer totalpages;
public List<T> getContent()
{
return content;
}
public void setContent(List<T> content) {
this.content = content;
}
public Integer getTotal() {
return total;
}
public void setTotal(Integer total) {
this.total = total;
}
public Integer getTotalpages() {
return totalpages;
}
public void setTotalpages(Integer totalpages) {
this.totalpages = totalpages;
}
}
javabean
package com.huasoft.common.domain;
import java.util.List;
import com.huasoft.common.domain.Emp
public class Dept
{
private String deptno;
private String dname;
private String loc;
private List<Emp> emp;
/*setter 和getter 省略*/
}
package com.huasoft.common.domain;
import java.math.BigDecimal;
import java.util.Date;
public class Emp
{
private Integer empno;
private String ename;
private String job;
private Integer mgr;
private Date hiredate;
private BigDecimal sal;
private BigDecimal comm;
private Integer deptno;
}
javabean映射文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN" "http://ibatis.apache.org/dtd/sql-map-2.dtd" >
<sqlMap namespace="EmpData">
<typeAlias alias="emp" type="com.huasoft.common.domain.Emp"/>
<typeAlias alias="dept"type="com.huasoft.common.domain.Dept"/>
<resultMap id="empResult" class="emp" >
<result column="EMPNO" property="empno" jdbcType="INTEGER" />
<result column="ENAME" property="ename" jdbcType="VARCHAR" />
<result column="JOB" property="job" jdbcType="VARCHAR" />
<result column="MGR" property="mgr" jdbcType="INTEGER" />
<result column="HIREDATE" property="hiredate" jdbcType="TIMESTAMP" />
<result column="SAL" property="sal" javaType="java.math.BigDecimal" jdbcType="DECIMAL" />
<result column="COMM" property="comm" jdbcType="DECIMAL" />
<result column="deptno2" property="deptno" jdbcType="VARCHAR" />
</resultMap>
<resultMap id="deptResult" class="dept">
<result column="deptno1" property="deptno" jdbcType="VARCHAR"/>
<result column="DNAME" property="dname" jdbcType="VARCHAR"/>
<result column="LOC" property="loc" jdbcType="VARCHAR"/>
<result property="problemdata" resultMap="EmpData.empResult" />
</resultMap>
<select id="EmpData.query" parameterClass="java.util.HashMap"
resultMap="deptResult">
select * from
(select tab.*, rownum row_num from (select tab1.deptno as deptno1,
tab.empno,
tab.ename,
tab.job,
tab.mgr,
tab.hiredate,
tab.sal,
tab.comm,
tab.deptno as deptno2,
tab1.dname,
tab1.loc
from scott.emp tab, scott.dept tab1
where tab1.deptno = tab.deptno) tab where rownum <![CDATA[
<=
]]> #limit#
)tab1 where row_num>#offset#
</select>
<select id="EmpData.count"
parameterClass="java.util.HashMap"
resultClass="java.lang.Integer">
select count(*) from
(select tab.*, rownum row_num from (select tab1.deptno as deptno1,
tab.empno,
tab.ename,
tab.job,
tab.mgr,
tab.hiredate,
tab.sal,
tab.comm,
tab.deptno as deptno2,
tab1.dname,
tab1.loc
from scott.emp tab, scott.dept tab1
where tab1.deptno = tab.deptno) tab
)tab1
</select>
</sqlMap>
sqlmap-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN"
"http://www.ibatis.com/dtd/sql-map-config-2.dtd">
<sqlMapConfig>
<settings enhancementEnabled="true" maxTransactions="20" maxRequests="32" maxSessions="10"/>
<!-- common -->
<sqlMap resource="com/huasoft/common/domain/EmpSqlMap.xml" />
</sqlMapConfig>
struts2和spring的配置文件，在网上都可以搜的到，这里不再写了。
