json对象转化为字符串,json字符串转换成对象有哪几种方法

一 引包

<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.31</version></dependency>

二 测试方法——将对象转化为JSON字符串

@Testpublic void objectToJSON(){ // 前端的请求 ReqDiffObjRuleSet reqDiffObjRuleSet = new ReqDiffObjRuleSet(); // 设置前端请求中的简单变量 reqDiffObjRuleSet.setObjectName("电视"); reqDiffObjRuleSet.setPipeLineId("1"); reqDiffObjRuleSet.setProductFamilyid("1"); reqDiffObjRuleSet.setRelationObjName("网线"); // 前端请求中的复杂变量 DiffObjRuleSet diffObjRuleSet = new DiffObjRuleSet(); // 封装复杂变量的对象 RelationObject relationObject = new RelationObject(); relationObject.setCompareResultRule(1); relationObject.setInvalidDataMode(1); relationObject.setMulDataMode(1); relationObject.setPipelineId("1"); relationObject.setProductFamilyId("1"); relationObject.setRelationObjectName("a"); relationObject.setRelationType(1); relationObject.setUpdateRule(1); // 封装复杂变量的第1个列表 List<DiffObjectAssoRuleSet> diffObjectAssoRuleSetList = new ArrayList<>(); DiffObjectAssoRuleSet diffObjectAssoRuleSet = new DiffObjectAssoRuleSet(); diffObjectAssoRuleSet.setAssoObjectCompareMode(1); diffObjectAssoRuleSet.setPipelineId("1"); diffObjectAssoRuleSet.setPriority(1); diffObjectAssoRuleSet.setProductFamilyId("1"); diffObjectAssoRuleSet.setAssoObjectCompareFieldName("a"); diffObjectAssoRuleSet.setAssoObjectName("a"); diffObjectAssoRuleSet.setSourceAttributeName("a"); diffObjectAssoRuleSet.setSourceObjectName("a"); diffObjectAssoRuleSet.setRuleName("test"); diffObjectAssoRuleSetList.add(diffObjectAssoRuleSet); // 封装复杂变量的第2个列表 List<DiffObjectUpdateRuleSet> diffObjectUpdateRuleSetList = new ArrayList<>(); DiffObjectUpdateRuleSet diffObjectUpdateRuleSet = new DiffObjectUpdateRuleSet(); diffObjectUpdateRuleSet.setPipelineId("1"); diffObjectUpdateRuleSet.setProductFamilyId("1"); diffObjectUpdateRuleSet.setInputAttributeName("a"); diffObjectUpdateRuleSet.setInputObjectName("a"); diffObjectUpdateRuleSet.setTargetAttributeName("a"); diffObjectUpdateRuleSet.setTargetObjectName("a"); diffObjectUpdateRuleSetList.add(diffObjectUpdateRuleSet); // 复杂变量中的对象和列表设置 diffObjRuleSet.setRelationObject(relationObject); diffObjRuleSet.setDiffObjectUpdateRuleSetList(diffObjectUpdateRuleSetList); diffObjRuleSet.setDiffObjectAssoRuleSetList(diffObjectAssoRuleSetList); // 设置前端请求中的复杂变量 reqDiffObjRuleSet.setDiffObjRuleSet(diffObjRuleSet); // 对象转字符串 String s= JSON.toJSONString(reqDiffObjRuleSet); System.out.println(s);}

三 运行结果如下

{"diffObjRuleSet":{"diffObjectAssoRuleSetList":[{"assoObjectCompareFieldName":"a","assoObjectCompareMode":1,"assoObjectName":"a","pipelineId":"1","priority":1,"productFamilyId":"1","ruleName":"test","sourceAttributeName":"a","sourceObjectName":"a"}],"diffObjectUpdateRuleSetList":[{"inputAttributeName":"a","inputObjectName":"a","pipelineId":"1","productFamilyId":"1","targetAttributeName":"a","targetObjectName":"a"}],"relationObject":{"compareResultRule":1,"invalidDataMode":1,"mulDataMode":1,"pipelineId":"1","productFamilyId":"1","relationObjectName":"a","relationType":1,"updateRule":1}},"objectName":"电视","pipeLineId":"1","productFamilyid":"1","relationObjName":"网线"}

四 将上面结果转化为标准格式

https://www.json.cn/

五 控制器

@PostMapping("/conf")public void diffObjAssoObjConf(@RequestBody ReqDiffObjRuleSet reqDiffObjRuleSet){ Result result = new Result(); System.out.println(reqDiffObjRuleSet);}

六 PostMan测试

七 控制台打印

ReqDiffObjRuleSet(diffObjRuleSet=DiffObjRuleSet(relationObject=RelationObject(relationObjectCode=null, relationObjectName=a, relationRuleName=null, relationType=1, compareResultRule=1, mulDataMode=1, invalidDataMode=1, updateRule=1, comparisonGroup=null, pipelineId=1, objectCode=null, productFamilyId=1), diffObjectAssoRuleSetList=[DiffObjectAssoRuleSet(ruleId=null, ruleCode=null, ruleName=test, sourceObjectCode=null, sourceObjectName=a, sourceAttributeCode=null, sourceAttributeName=a, assoObjectCode=null, assoObjectName=a, assoObjectCompareFieldCode=null, assoObjectCompareFieldName=a, assoObjectCompareMode=1, priority=1, pipelineId=1, productFamilyId=1)], diffObjectUpdateRuleSetList=[DiffObjectUpdateRuleSet(ruleId=null, ruleCode=null, ruleName=null, targetObjectCode=null, targetObjectName=a, targetAttributeCode=null, targetAttributeName=a, inputObjectCode=null, inputObjectName=a, inputAttributeCode=null, inputAttributeName=a, pipelineId=1, productFamilyId=1)]), pipeLineId=1, productFamilyid=1, objectName=电视, relationObjName=网线)