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本文链接：https://blog.youkuaiyun.com/m0_70953413/article/details/136685655

该篇文章介绍了如何使用SpringMVC的@RequestMapping注解处理GET请求，通过LambdaQueryWrapper查询报表配置数据，并构建一个递归函数getTreeList来生成包含父子关系的报表配置树结构。

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@RequestMapping(value = "/listChildren", method = RequestMethod.GET)
public Result<List<RepConfigTree>> list(RepConfigInfo repConfigInfo, @RequestParam(name = "repLx", defaultValue = "") String repLx) {
    long start = System.currentTimeMillis();
    Result<List<RepConfigTree>> result = new Result<>();
    try {
        LambdaQueryWrapper<RepConfigInfo> query = new LambdaQueryWrapper<RepConfigInfo>();
        query.orderByAsc(RepConfigInfo::getXh);
        if(!repLx.isEmpty()){
            query.like(RepConfigInfo::getRepLx, repLx);
        }
        List<RepConfigInfo> list = repConfigService.list(query);
        List<RepConfigTree> treeList = new ArrayList<>();
        getTreeList(treeList, list, null);
        result.setResult(treeList);
        result.setSuccess(true);
        log.info("======获取全部报表配置数据=====耗时:" + (System.currentTimeMillis() - start) + "毫秒");
    } catch (Exception e) {
        log.error(e.getMessage(), e);
    }
    return result;
}


private void getTreeList(List<RepConfigTree> treeList, List<RepConfigInfo> metaList, RepConfigTree temp) {
    for (RepConfigInfo rep : metaList) {
        String tempPid = rep.getParentNodeId();
        RepConfigTree tree = new RepConfigTree(rep);
        if (temp == null && oConvertUtils.isEmpty(tempPid)) {
            treeList.add(tree);
            if (tree.getNodeVisible()) {
                getTreeList(treeList, metaList, tree);
            }
        }else if (temp != null && tempPid != null && tempPid.equals(temp.getId())) {
            temp.getChildren().add(tree);
            if (tree.getNodeVisible()) {
                getTreeList(treeList, metaList, tree);
            }
        }

    }
}

递归加载树节点