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public PageResult<SysOperationLog> selectPageList(PageParam pageParam, SysOperationLog sysOperationLog) {
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        //分页参数带入 ,并放在最顶上
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        PageHelper.startPage(Integer.parseInt(pageParam.getCurrent()+""),Integer.parseInt(pageParam.getSize() +""));
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        //带入需要分页的列表
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        List<SysOperationLog> sysOperationLogResList = sysOperationLogMapper.selectByCondition(sysOperationLog);
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        //包装列表数据
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        PageInfo<SysOperationLog> pageInfo = new PageInfo<>(sysOperationLogResList);
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        PageResult<SysOperationLog> pageResult = new PageResult<>();
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        pageResult.setRecords(pageInfo.getList());
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        pageResult.setTotal(pageInfo.getTotal());
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        return pageResult;
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    }

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#Mapper层
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default PageResult<SysPermission> selectPageList(QueryReq queryReq){
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    //分页参数
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        PageParam pageParam = new PageParam();
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        pageParam.setCurrent(queryReq.getCurrent());
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        pageParam.setSize(queryReq.getSize());
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        IPage<SysPermission> page = this.prodPage(pageParam);
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        //分页查询参数
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        LambdaQueryWrapper<SysPermission> wrapper = Wrappers.lambdaQuery(SysPermission.class)
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                .likeIfPresent(SysPermission::getPermissionName,queryReq.getParameter().get("permissionName"))
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                .orderByDesc(SysPermission::getCreateTime);
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        this.selectPage(page, wrapper);
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        return new PageResult<>(page.getRecords(), page.getTotal());
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    }