@Autowried 中使用static接口.

@Component
public class CheckDataBase {

    @Autowired
    private ZhutiMapper zhutiMapper;
    private static CheckDataBase checkDataBase;

    @PostConstruct
    public void init() {
        checkDataBase = this;
        checkDataBase.zhutiMapper = this.zhutiMapper;
    }

    public static boolean get(String name) {
        String flag = checkDataBase.zhutiMapper.CheckDataBase(name);
        if ("t".equals(flag)) {
            return true;
        }
        return false;
    }
}

@Component
public class CheckDataBase {

    private static ZhutiMapper zhutiMapper;

    @Autowired
    public CheckDataBase(ZhutiMapper zhutiMapper) {
        CheckDataBase.zhutiMapper = zhutiMapper;
    }

    public static boolean get(String name) {
        String flag = zhutiMapper.CheckDataBase(name);
        if ("t".equals(flag)) {
            return true;
        }
        return false;
    }
}

用这种方式,同时附上postgresql检测表的方法:

 <select id="CheckDataBase" resultType="String">
        SELECT to_regclass("${name}") is not null
    </select>

返回t是true,f是false