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本篇內(nèi)容介紹了“如何使用json字符串插入節(jié)點或者覆蓋節(jié)點”的有關(guān)知識,在實際案例的操作過程中,不少人都會遇到這樣的困境,接下來就讓小編帶領(lǐng)大家學(xué)習(xí)一下如何處理這些情況吧!希望大家仔細(xì)閱讀,能夠?qū)W有所成!
JSONObject obj=JSONObject.parseObject(jfdaJson); obj.put("dj",xydjDm);// 更新dj字段 obj.put("xydjMc",xydjMc);// 添加xydjMc字段 obj.toString();
按ID查詢樹
http://host/tree_data/node/${treeId} in: {node: {key: ..., ...}, parent: ${key}, sequ: ${sequ}}
http://host/tree_data/node/${treeId}/${key} in: {node: {key: ..., ...}}
http://host/tree_data/node/${treeId}/${key}
CREATE TABLE `catagory_tree` ( `id` bigint(11) NOT NULL AUTO_INCREMENT, `name` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '分類樹名稱:PRODUCT:產(chǎn)品分類 GOODS:商品分類', `json_tree` text CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '直接存儲ANTD樹表的數(shù)據(jù)結(jié)構(gòu)', `modify_staff` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL, `modify_time` datetime(0) NOT NULL, PRIMARY KEY (`id`) USING BTREE, INDEX `AK_uni_catagory_tree_name`(`name`) USING BTREE ) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;
[{ "id": 1, "code": "FLOW_NODE_1", "name": "環(huán)節(jié)A", "children": [{ "id": 2, "code": "RULE_NODE_1", "name": "規(guī)則A" }, { "id": 3, "code": "RULE_NODE_2", "name": "規(guī)則B" }, { "id": 4, "code": "PARALLEL_NODE_2", "name": "并行節(jié)點", "children": [{ "id": 5, "code": "RULE_NODE_3", "name": "規(guī)則C1" }, { "id": 6, "code": "RULE_COLLECTION_1", "name": "規(guī)則集1", "children": [{ "id": 7, "code": "RULE_NODE_4", "name": "規(guī)則C21" }, { "id": 8, "code": "RULE_NODE_5", "name": "規(guī)則C22" }] }] }, { "id": 9, "code": "MUTUAL_NODE_1", "name": "互斥節(jié)點", "children": [{ "id": 10, "code": "RULE_NODE_6", "name": "規(guī)則D1" }, { "id": 11, "code": "RULE_NODE_7", "name": "規(guī)則D2" }] }] }, { "id": 12, "code": "FLOW_NODE_2", "name": "環(huán)節(jié)B" }]
<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.49</version> </dependency>
package cn.chinaunicom.srigz.goods.admin.controller; import cn.chinaunicom.srigz.goods.admin.service.CatagoryTreeService; import cn.chinaunicom.srigz.goods.admin.utils.ActionHelper; import io.swagger.annotations.ApiOperation; import io.swagger.annotations.ApiParam; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; import java.util.Map; @RestController public class CatagoryTreeController { @Autowired private CatagoryTreeService catagoryTreeService; @ApiOperation(value="查詢分類樹信息", notes="輸入分類樹Id") @RequestMapping(value = "/api/v1/tree_data/node/{treeId}", method = RequestMethod.GET) public Map getOne(@ApiParam(required = true, value = "分類樹ID") @PathVariable Integer treeId){ return ActionHelper.responseOk(catagoryTreeService.getOne(treeId)); } @ApiOperation(value="新建節(jié)點", notes="根據(jù)輸入?yún)?shù)創(chuàng)建節(jié)點") @RequestMapping(value = "/tree_data/node/{treeId}", method = RequestMethod.POST) public Map addOne(@ApiParam(required = true, value = "分類樹ID")@PathVariable Integer treeId, @ApiParam(required = true, value = "節(jié)點信息、父類ID、數(shù)組位置") @RequestBody Map map){ return ActionHelper.responseOk(catagoryTreeService.addOne(treeId,map)); } @ApiOperation(value="更新節(jié)點信息", notes="更新節(jié)點信息") @RequestMapping(value = "/tree_data/node/{treeId}/{id}", method = RequestMethod.PATCH) public Map updateOne(@ApiParam(required = true, value = "分類樹ID")@PathVariable Integer treeId, @ApiParam(required = true, value = "節(jié)點ID")@PathVariable Integer id, @ApiParam(required = true, value = "節(jié)點信息") @RequestBody Map map){ return ActionHelper.responseOk(catagoryTreeService.updateOne(treeId,id,map)); } @ApiOperation(value="刪除節(jié)點詳情", notes="刪除節(jié)點詳情") @RequestMapping(method = RequestMethod.DELETE,value = "/tree_data/node/{treeId}/{id}") public Map remove(@ApiParam(required = true, value = "分類樹ID")@PathVariable Integer treeId, @ApiParam(required = true, value = "節(jié)點ID")@PathVariable Integer id){ return ActionHelper.responseOk(catagoryTreeService.remove(treeId,id)); } }
JSONArray jsonArray = JSON.parseArray(jsonTree); //由json字符串變成json數(shù)組對象 jsonArray.toJSONString() //由json數(shù)組對象變成json字符串
package cn.chinaunicom.srigz.goods.admin.service; import cn.chinaunicom.srigz.goods.admin.database.dao.CatagoryTreeRepository; import cn.chinaunicom.srigz.goods.admin.database.model.CatagoryTree; import cn.chinaunicom.srigz.goods.admin.utils.Recursive; import cn.chinaunicom.srigz.goods.common.exception.AlreadyExistException; import cn.chinaunicom.srigz.goods.common.exception.BadRequestException; import cn.chinaunicom.srigz.goods.common.exception.NotFoundException; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import java.util.*; @Service public class CatagoryTreeService { @Autowired private CatagoryTreeRepository catagoryTreeRepository; /** * 查詢單個分類樹 * @param treeId * @return */ public JSON getOne(Integer treeId) { CatagoryTree catagoryTree = catagoryTreeRepository.findById(treeId.longValue()).get(); return JSON.parseArray(catagoryTree.getJsonTree()); } /** * 增加單個節(jié)點 * @param treeId * @param map * @return */ @Transactional public JSON addOne(Integer treeId, Map map) { CatagoryTree catagoryTree = catagoryTreeRepository.findById(treeId.longValue()).get(); String jsonTree = catagoryTree.getJsonTree(); JSONArray jsonArray = JSON.parseArray(jsonTree); Object parentId = map.get("parentId"); Integer sequ = (Integer) map.get("sequ"); if(sequ <= 0 ){ throw new BadRequestException("數(shù)組位置不正確"); } Map nodeMap = (Map) map.get("node"); JSONObject node = new JSONObject(nodeMap); List list = new ArrayList(); List keyList = Recursive.recursive(jsonArray,"id",list); for (Object key : keyList) { if (nodeMap.get("id").toString().equals(key.toString())) { throw new AlreadyExistException("節(jié)點ID為" + key); } } Recursive.addRecursive(jsonArray,node,sequ,"id",parentId); catagoryTree.setJsonTree(jsonArray.toJSONString()); catagoryTreeRepository.save(catagoryTree); return jsonArray; } /** * 修改單個節(jié)點 * @param treeId * @param id * @param map * @return */ @Transactional public JSON updateOne(Integer treeId, Integer id, Map map) { CatagoryTree catagoryTree = catagoryTreeRepository.findById(treeId.longValue()).get(); String jsonTree = catagoryTree.getJsonTree(); JSONArray jsonArray = JSON.parseArray(jsonTree); List list = new ArrayList(); List keyList = Recursive.recursive(jsonArray,"id",list); JSONObject node = new JSONObject(map); if (id.toString().equals(map.get("id").toString())) { for (Object key : keyList) { if (id.toString().equals(key.toString())) { Recursive.updateRecursive(jsonArray,"id",id,node); catagoryTree.setJsonTree(jsonArray.toJSONString()); catagoryTree.setModifyTime(new Date()); catagoryTreeRepository.save(catagoryTree); return jsonArray; } } }else { throw new BadRequestException("id is not allowed to be modified"); } throw new NotFoundException("節(jié)點ID為" + id); } /** * 刪除節(jié)點以及子節(jié)點 * @param treeId * @param id * @return */ @Transactional public JSON remove(Integer treeId, Integer id) { CatagoryTree catagoryTree = catagoryTreeRepository.findById(treeId.longValue()).get(); String jsonTree = catagoryTree.getJsonTree(); JSONArray jsonArray = JSON.parseArray(jsonTree); List list = new ArrayList(); List keyList = Recursive.recursive(jsonArray,"id",list); for (Object key : keyList) { if (id.toString().equals(key.toString())) { Recursive.removeRecursive(jsonArray,"id",id); catagoryTree.setJsonTree(jsonArray.toJSONString()); catagoryTreeRepository.save(catagoryTree); return jsonArray; } } throw new NotFoundException("節(jié)點ID為" + id); } }
package cn.chinaunicom.srigz.goods.admin.utils; import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; import java.util.List; public class Recursive { /** * 遞歸取出所有Key對應(yīng)的value值 * @param jsonArray 需要查詢的目標(biāo)主體 * @param key 需要查詢的字段名key * @param list 存儲value值 * @return */ public static List recursive(JSONArray jsonArray, String key, List list) { for (Object obj : jsonArray) { JSONObject jsonObject = (JSONObject) obj; JSONArray children = jsonObject.getJSONArray("children"); if (children != null) { list.add(jsonObject.get(key)); recursive(children,key,list); }else { list.add(jsonObject.get(key)); } } return list; } /** * 增加節(jié)點 * @param jsonArray 需要更新的目標(biāo)主體 * @param node 增加節(jié)點信息 * @param sequ 數(shù)組的位置 * @param key 目標(biāo)主體中的字段名key * @param value 節(jié)點信息與key對應(yīng)的value */ public static void addRecursive(JSONArray jsonArray, JSONObject node, Integer sequ, String key, Object value) { for (Object obj : jsonArray) { JSONObject jsonObject = (JSONObject) obj; JSONArray children = jsonObject.getJSONArray("children"); if (children != null) { if (value.toString().equals(jsonObject.get(key).toString())) { if(sequ > children.size()){ children.add(children.size(), node); }else{ children.add(sequ-1, node); } return; } addRecursive(children,node,sequ,key,value); } else { if (value.toString().equals(jsonObject.get(key).toString())) { JSONArray array = new JSONArray(); array.add(node); jsonObject.put("children", array); return; } } } } /** * 根據(jù)條件更新節(jié)點 * @param jsonArray 需要更新的目標(biāo)主體 * @param key 目標(biāo)主體中的字段名key * @param value 更新節(jié)點信息與key對應(yīng)的value * @param node 更新節(jié)點信息 */ public static void updateRecursive(JSONArray jsonArray, String key, Object value, JSONObject node) { for (int i = 0; i < jsonArray.size() ; i++) { JSONObject jsonObject = jsonArray.getJSONObject(i); JSONArray children = jsonObject.getJSONArray("children"); if (value.toString().equals(jsonObject.get(key).toString())) { if(children != null){ node.put("children",children); } jsonArray.set(i,node); return; }else if(children != null){ updateRecursive(children,key,value,node); } } } /** * 刪除節(jié)點 * @param jsonArray 需要更新的目標(biāo)主體 * @param key 目標(biāo)主體中的字段名key * @param value 節(jié)點信息與key對應(yīng)的value */ public static void removeRecursive(JSONArray jsonArray,String key,Object value) { for (Object obj : jsonArray) { JSONObject jsonObject = (JSONObject) obj; if (value.toString().equals(jsonObject.get(key).toString())) { jsonArray.remove(jsonObject); return; } JSONArray children = jsonObject.getJSONArray("children"); if (children != null) { removeRecursive(children,key,value); } } } }
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