mybatis 注解传入 list 集合

这里写一个查询的sql语句

首先看 mapper

 @SelectProvider(type = SqlModel.class, method = "listDeviceIndex")
    @Results(value = {
            @Result(column = "index_id",property = "userIndex"),
            @Result(column = "device_id",property = "deviceId")
    })
    List<DeviceIndex> selectByDeviceIdList(List<Integer> deviceIds);

@SelectProvider是生产动态sql的
type : 对应的类
method ： 方法

SqlModel.java

public String listDeviceIndex(Map map) {
        List<Integer> list = (List<Integer>) map.get("list");
        StringBuilder sb = new StringBuilder();
        sb.append("SELECT * FROM device_index WHERE device_id IN(");
        MessageFormat mf = new MessageFormat("#'{'list[{0}]}");
        for (int i = 0; i < list.size(); i++) {
            sb.append(mf.format(new Object[]{i}));
            if (i < list.size() - 1) {
                sb.append(",");
            }
        }
        sb.append(")");
        return sb.toString();
    }