mybatis的sql标记的使用

数据库：

create table INSURANCE_PRODUCT
(
  product_code  VARCHAR2(32) not null,
  product_name  NVARCHAR2(20),
  product_type  VARCHAR2(1),
  validate_date VARCHAR2(8)
)
;
alter table INSURANCE_PRODUCT
  add constraint PK primary key (PRODUCT_CODE);

insert into INSURANCE_PRODUCT (product_code, product_name, product_type, validate_date)
values ('01001', '牙刷', '1', '20150819');
insert into INSURANCE_PRODUCT (product_code, product_name, product_type, validate_date)
values ('01002', '毛巾', '1', '20150818');
insert into INSURANCE_PRODUCT (product_code, product_name, product_type, validate_date)
values ('01003', '脸盆', '1', '20150817');
insert into INSURANCE_PRODUCT (product_code, product_name, product_type, validate_date)
values ('02001', '手机', '2', '20150820');
insert into INSURANCE_PRODUCT (product_code, product_name, product_type, validate_date)
values ('02002', '笔记本', '2', '20150821');
insert into INSURANCE_PRODUCT (product_code, product_name, product_type, validate_date)
values ('02003', 'ipad', '2', '20150822');
insert into INSURANCE_PRODUCT (product_code, product_name, product_type, validate_date)
values ('03001', '苹果', '3', '20150101');
insert into INSURANCE_PRODUCT (product_code, product_name, product_type, validate_date)
values ('03002', '香蕉', '3', '20150102');
insert into INSURANCE_PRODUCT (product_code, product_name, product_type, validate_date)
values ('03003', '梨子', '3', '20150103');
insert into INSURANCE_PRODUCT (product_code, product_name, product_type, validate_date)
values ('04001', '衣服', '4', '20150808');
commit;

BaseMapper.xml：

<?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="baseMapper">
	<sql id="filterWhereParam">
		<foreach collection="mapTag" item="myvalue" index="mykey">
		   <if test="myvalue != null and myvalue != ''"></if>
	       and ${mykey} = #{myvalue}
	    </foreach>
	</sql>
</mapper>

InsuranceProductMapper.xml：

<?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="InsuranceProductMapper">
	<resultMap type="entity.InsuranceProduct" id="queryMap">
		<id column="PRODUCT_CODE" property="productCode"/>
		<result column="PRODUCT_NAME" property="productName"/>
		<result column="PRODUCT_TYPE" property="productType"/>
		<result column="VALIDATE_DATE" property="validateDate"/>
	</resultMap>
	<select id="selectAllByCondition" resultMap="queryMap" parameterType="query.Query">
	    select t.PRODUCT_CODE, t.PRODUCT_NAME, t.PRODUCT_TYPE, t.VALIDATE_DATE 
	    from INSURANCE_PRODUCT t  where 1 = 1 
	    <include refid="baseMapper.filterWhereParam"></include>
	</select>
</mapper>

查询参数 Query.java：

package query;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Query {
	private List<String> listTag = new ArrayList<String>();
	private Map<String, String> mapTag = new HashMap<String, String>();
	public List<String> getListTag() {
		return listTag;
	}
	public void setListTag(List<String> listTag) {
		this.listTag = listTag;
	}
	public Map<String, String> getMapTag() {
		return mapTag;
	}
	public void setMapTag(Map<String, String> mapTag) {
		this.mapTag = mapTag;
	}
}

表对应的实体类 InsuranceProduct.java：

package entity;

public class InsuranceProduct {
	private String productCode;
	private String productName;
	private String productType;
	private String validateDate;
	public String getProductCode() {
		return productCode;
	}
	public void setProductCode(String productCode) {
		this.productCode = productCode;
	}
	public String getProductName() {
		return productName;
	}
	public void setProductName(String productName) {
		this.productName = productName;
	}
	public String getProductType() {
		return productType;
	}
	public void setProductType(String productType) {
		this.productType = productType;
	}
	public String getValidateDate() {
		return validateDate;
	}
	public void setValidateDate(String validateDate) {
		this.validateDate = validateDate;
	}
	@Override
	public String toString() {
		return "\nInsuranceProduct [productCode=" + productCode
				+ ", productName=" + productName + ", productType="
				+ productType + ", validateDate=" + validateDate + "]\n";
	}
}

TestMybatis.java：

package test;

import java.io.InputStream;
import java.util.List;

import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;

import query.Query;

public class TestMybatis {
	@Test
	public void testCommon(){
		//mybatis的配置文件
        String resource = "mybatis-config.xml";
        //使用类加载器加载mybatis的配置文件（它也加载关联的映射文件）
        InputStream is = TestMybatis.class.getClassLoader().getResourceAsStream(resource);
        //构建sqlSession的工厂
        SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(is);
        //创建能执行映射文件中sql的sqlSession
        SqlSession session = sessionFactory.openSession();
        String statement = "InsuranceProductMapper.selectAllByCondition";//映射sql的标识字符串
        List<Object> list = session.selectList(statement);
        System.out.println(list);
	}
	
	@Test
	public void testForeachSimple(){
		//mybatis的配置文件
        String resource = "mybatis-config.xml";
        //使用类加载器加载mybatis的配置文件（它也加载关联的映射文件）
        InputStream is = TestMybatis.class.getClassLoader().getResourceAsStream(resource);
        //构建sqlSession的工厂
        SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(is);
        //创建能执行映射文件中sql的sqlSession
        SqlSession session = sessionFactory.openSession();
        String statement = "InsuranceProductMapper.selectAllByCondition";//映射sql的标识字符串
        Query query = new Query();
        query.getMapTag().put("t.PRODUCT_CODE", "01001");
        System.out.println(query.getMapTag());
        List<Object> list = session.selectList(statement, query);
        System.out.println(list);
	}
}

参考：http://blog.csdn.net/isea533/article/details/22336991