ibatis的几种resultClass
ibatis在编写sqlmap的查询时，可以使用多种输出格式，比如：实体类，hashmap，xml格式。sqlmap中的hashmap和xml都是内置别名。
1.实体类：
<resultMap id="UserResult" class="User"><result property="id" column="T_ID"/><result property="name" column="T_NAME"/><result property="sex" column="T_SEX"/><result property="address" column="T_ADDRESS"/></resultMap><select id="selectAllUser" resultMap="UserResult"> select * from t_user</select>
List list = userdao.selectAllUser();for(int i=0;i<list.size();i++) { System.out.println(list.get(i));}
注：当作一个对象使用。
2.hashmap:
<select id="selectAllUser" resultClass="hashmap"> select * from t_user</select>
List list = userdao.selectAllUser();for(int i=0;i<list.size();i++) {Map map = (Map)list.get(i);System.out.print(map.get("id")+" ");System.out.print(map.get("name")+" ");System.out.print(map.get("sex")+" ");System.out.print(map.get("address"));System.out.println();}
注：当作一个键值对的MAP使用。
3.XML：
<select id="selectXML" resultClass="xml" xmlResultName="log"> select * from t_user</select>
List list = userdao.selectAllUser();for(int i=0;i<list.size();i++) {System.out.println(list.get(i));}
XML结果：
<?xml version="1.0" encoding="UTF-8"?><log><id>1</id><name>hua</name><sex>1</sex><address>1</address></log><?xml version="1.0" encoding="UTF-8"?><log><id>2</id><name> zhupan </name><sex>2</sex><address>1</address></log><?xml version="1.0" encoding="UTF-8"?><log><id>4</id><name> 4 </name><sex>4</sex><address>1</address></log><?xml version="1.0" encoding="UTF-8"?><log><id>5</id><name> 5 </name><sex>5</sex><address>2</address></log>
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