MyBatis+MySQL 传入参数

1.String 单独传参

public List<Teacher> selectTeacher(@Param(value="id") String id,@Param(value="sex") String sex); 

2，Mapper位置传参数

 #{0}

#{1}

3，Map出入参数

java：

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

        par.put("userId",userId);

        par.put("orderSn",orderSn);

        return marketCommentDao.getCommentByUid(par);

xml：

 <select id="getOrderCountForPlat"  parameterType="map" >

4，传入数组参数

@RequestMapping(value = "/applyJob", method = RequestMethod.POST,consumes = "application/json")

@ResponseBody

public DataTransferObject applyJob(@RequestBody Integer[] jobIds,HttpServletRequest request) {

Integer userId = SessionUtil.getUserId(request);

   return jobProxy.applyJob(jobIds,userId);

}

5，java对象中mappr属性传参

java中的代码
  
private Map<String, Object> params = new HashMap<String, Object>();

xml中代码

 <if test="params != null">
<if test="params.get('excludeId') != null">
or n.id = ${params.get('excludeId')} 
</if>
</if>

6，JsonObject传入参数

java代码：

@RequestMapping(value = "/page",method = RequestMethod.POST)
@ResponseBody
public DataTransferObject page(@RequestBody JSONObject param){

java取参数：  int pageNo = Integer.valueOf(param.get("pageNo").toString());

        int pageSize = Integer.valueOf(param.get("pageSize").toString());

String content = param.optString("content", ""); //推荐

        Integer result = param.optInt("result", 0); //推荐

java设置参数：

 param.put("start", pageNo * pageSize);

        param.put("end", pageSize);

java：判断，取出数组，移除

 if (param.has("attributeItemIds")) {

            JSONArray attributeItemIds = param.getJSONArray("attributeItemIds");

            if (null == attributeItemIds || attributeItemIds.size() == 0) {

                param.remove("attributeItemIds");

            }

        }

entityQO对象传递：

private Integer attributeId;

private JSONArray attributeItemIds;// 兼容web端

xml取出：

1，  <select id="phoneListCommodityCompleteInfo" resultType="com.uei.phone.manager.model.market.CommodityVo" parameterType="com.uei.phone.manager.model.market.CommodityQo" >

2， <select id="listCmomodityCompleteInfo" resultType="hashMap" parameterType="org.json.simple.JSONObject" >

取出与遍历

<if test="catagoryId != null and catagoryId != ''">

    AND b.catagory_id = #{catagoryId}

    </if>

    <if test="catagoryIds != null and catagoryIds.size != 0">

    AND b.catagory_id IN

    <foreach item="catagoryId" index="index" collection="catagoryIds" open="(" separator="," close=")">

        #{catagoryId}

  </foreach>

    </if>