PageHelper只对紧跟着的第一条SQL起作用

这个sql的中心思想就是根据查询到的schema然后分别查询schema中的相关数据再用union all将结果及拼接在一起。
LocServiceImpl.findAllLoc(Loc loc)

@Overridepublic List<Loc> findAllLoc(Loc loc) {try {HashMap<String,Object> map = new HashMap<String,Object>();List<String> schemas = this.locMapper.findAllSchema(loc);//查询所有的schemamap.put("schemas", schemas);map.put("loc", loc);return this.locMapper.findAllLoc(map);} catch (Exception e) {e.printStackTrace();return new ArrayList<>();}}

//分页异常的代码的LocController中代码

@RequestMapping("loc/list")@ResponseBodypublic Map<String, Object> locList(QueryRequest request, Loc loc) {PageHelper.startPage(request.getPageNum(), request.getPageSize());List<Loc> list = this.locService.findAllLoc(loc);//具体实现在第一段代码。系统认为findAllSchema(loc)是第一条语句。PageHelper只对紧跟着的第一条SQL起作用//        HashMap<String,Object> map = new HashMap<String,Object>();
//        List<String> schemas = this.locMapper.findAllSchema(loc);//        map.put("schemas", schemas);
//        map.put("loc", loc);
//        
//        PageHelper.startPage(request.getPageNum(), request.getPageSize());
//        List<Loc> list =  this.locMapper.findAllLoc(map);
        PageInfo<Loc> pageInfo = new PageInfo<>(list);return getDataTable(pageInfo);}

//yml配置

#pagehelper
pagehelper: helperDialect: oraclereasonable: false//这个熟悉需要改成falsesupportMethodsArguments: trueparams: count=countSql

//分页正常的LocController中代码，拆分开，然后把PageHelper放在需要分页的SQL之前，就正常了。

@RequestMapping("loc/list")@ResponseBodypublic Map<String, Object> locList(QueryRequest request, Loc loc) {
//        PageHelper.startPage(request.getPageNum(), request.getPageSize());
//        List<Loc> list = this.locService.findAllLoc(loc);
HashMap<String,Object> map = new HashMap<String,Object>();List<String> schemas = this.locMapper.findAllSchema(loc);map.put("schemas", schemas);map.put("loc", loc);PageHelper.startPage(request.getPageNum(), request.getPageSize());//PageHelper只对紧跟着的第一条SQL起作用List<Loc> list =  this.locMapper.findAllLoc(map);//这条语句被视为紧跟着的第一条语句PageInfo<Loc> pageInfo = new PageInfo<>(list);return getDataTable(pageInfo);}