示例#1
0
 /**
  * Mybatis拦截器方法
  *
  * @param invocation 拦截器入参
  * @return 返回执行结果
  * @throws Throwable 抛出异常
  */
 public Object processPage(Invocation invocation) throws Throwable {
   try {
     Object result = _processPage(invocation);
     return result;
   } finally {
     clearLocalPage();
     OrderByHelper.clear();
   }
 }
示例#2
0
  @RequestMapping(value = "/bd_quick_reply", method = RequestMethod.GET)
  public @ResponseBody Map<String, Object> allList() {
    Map<String, Object> result = new HashMap<>();
    List<QuickReply> quickReply = null;
    try {
      OrderByHelper.orderBy("sort asc");
      quickReply = quickReplyService.selectAll();
    } catch (Exception e) {
      log.error(e.getMessage(), e);
    }

    result.put("data", quickReply);

    return result;
  }
示例#3
0
  /**
   * Mybatis拦截器方法
   *
   * @param invocation 拦截器入参
   * @return 返回执行结果
   * @throws Throwable 抛出异常
   */
  private Object _processPage(Invocation invocation) throws Throwable {
    final Object[] args = invocation.getArgs();
    RowBounds rowBounds = (RowBounds) args[2];
    if (SqlUtil.getLocalPage() == null && rowBounds == RowBounds.DEFAULT) {
      if (OrderByHelper.getOrderBy() != null) {
        OrderByHelper.processIntercept(invocation);
      }
      return invocation.proceed();
    } else {
      // 获取原始的ms
      MappedStatement ms = (MappedStatement) args[0];
      // 判断并处理为PageSqlSource
      if (!isPageSqlSource(ms)) {
        processMappedStatement(ms, parser);
      }
      // 忽略RowBounds-否则会进行Mybatis自带的内存分页
      args[2] = RowBounds.DEFAULT;
      // 分页信息
      Page page = getPage(rowBounds);
      // pageSizeZero的判断
      if ((page.getPageSizeZero() != null && page.getPageSizeZero()) && page.getPageSize() == 0) {
        COUNT.set(null);
        // 执行正常(不分页)查询
        Object result = invocation.proceed();
        // 得到处理结果
        page.addAll((List) result);
        // 相当于查询第一页
        page.setPageNum(1);
        // 这种情况相当于pageSize=total
        page.setPageSize(page.size());
        // 仍然要设置total
        page.setTotal(page.size());
        // 返回结果仍然为Page类型 - 便于后面对接收类型的统一处理
        return page;
      }

      // 简单的通过total的值来判断是否进行count查询
      if (page.isCount()) {
        COUNT.set(Boolean.TRUE);
        // 替换MS
        args[0] = msCountMap.get(ms.getId());
        // 查询总数
        Object result = invocation.proceed();
        // 还原ms
        args[0] = ms;
        // 设置总数
        page.setTotal((Integer) ((List) result).get(0));
        if (page.getTotal() == 0) {
          return page;
        }
      }
      // pageSize>0的时候执行分页查询,pageSize<=0的时候不执行相当于可能只返回了一个count
      if (page.getPageSize() > 0
          && ((rowBounds == RowBounds.DEFAULT && page.getPageNum() > 0)
              || rowBounds != RowBounds.DEFAULT)) {
        // 将参数中的MappedStatement替换为新的qs
        COUNT.set(null);
        BoundSql boundSql = ms.getBoundSql(args[1]);
        args[1] = parser.setPageParameter(ms, args[1], boundSql, page);
        COUNT.set(Boolean.FALSE);
        // 执行分页查询
        Object result = invocation.proceed();
        // 得到处理结果
        page.addAll((List) result);
      }
      // 返回结果
      return page;
    }
  }