mybatis中的配置及mysql的特有语句

package di.controller;

import java.io.IOException;

import java.io.Reader;

import java.util.HashMap;

import java.util.LinkedHashMap;

import java.util.List;

import java.util.Map;

import li.utils.JsonUtils;

import org.apache.ibatis.io.Resources;

import org.apache.ibatis.session.SqlSessionFactory;

import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;

import di.dao.GisMapper;

import di.model.GisModel;

@Controller

@RequestMapping(value = "/gis")

public class GisController {

/**

* @ClassName GisController

* @Description 地理信息系统服务

* @Author libi

* @CreateDate 2016年3月24日

*/

private GisMapper gisMapper = null;

public GisController() {

// TODO Auto-generated constructor stub

if(gisMapper == null){

gisMapper = (GisMapper) getMapper(GisMapper.class);

}

}

@RequestMapping

public String gis(){

return "GISMap/index.html";

}

@RequestMapping(value = "/search")

public @ResponseBody List<GisModel> search(String key){

System.out.println(key);

return gisMapper.search("%"+key+"%");

}

@RequestMapping(value = "/getDetail")

public @ResponseBody Map<String,Object> getDetail(String kid, String type){

Map<String, Object> param = new HashMap<String, Object>();

param.put("kid", Integer.valueOf(kid));

param.put("type", type);

param.put("kcln", gisMapper.getKeyColumn(type));

LinkedHashMap<String,Object> map = (LinkedHashMap<String,Object>) gisMapper.getDetail(param);

System.out.println(map.size());

Map<String,Object> map2 = JsonUtils.changeToString(map);

map2.put("size",map.size());

System.out.print(map2);

return map2;

}

@SuppressWarnings({ "unchecked", "rawtypes" })

private Object getMapper(Class obj){

Reader reader = null;

try {

reader = Resources.getResourceAsReader("mybatis-config.xml");

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

return null;

}

SqlSessionFactory sqlSession = new SqlSessionFactoryBuilder().build(reader);

return sqlSession.openSession(true).getMapper(obj);

}

}

package di.dao;

import java.util.List;

import java.util.Map;

import di.model.GisModel;

@SuppressWarnings("rawtypes")

public interface GisMapper {

public List<GisModel> search(String key);

public Map getDetail(Map param);

public String getKeyColumn(String tbname);

}

<?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="di.dao.GisMapper">

<select id="search"
resultType="di.model.GisModel">

<![CDATA[

select intcitycid id, varcityname name, fltlongitude longitude, fltlatitude latitude, varoverview detail,

'tbcity' type from tbcity where varcityname like
#{key}

union

select intdamid id,vardamname name,fltlongitude longitude,fltlatitude latitude,txtoverview detail,'tbdam' type

from tbdam where vardamname like #{key}

union

select intoildepotid id,varoildepname name,fltlongitude longitude,fltlatitude latitude,txtoverview detail,'tboildepot' type

from tboildepot where varoildepname like #{key}

]]>

</select>

<select id="getDetail"
parameterType="java.util.Map" resultType="java.util.LinkedHashMap">

<![CDATA[

select * from ${type}

where ${kcln}=${kid}

]]>

</select>

<select id="getKeyColumn"
parameterType="String" resultType="String">

<![CDATA[ 下面的语句是mysql的特有语句

select column_name

from information_schema.columns

where table_name=#{type} and column_name LIKE 'int%id'

]]>

</select>

</mapper>