我有一个json形式的表,其中包含对象此对象的变量之一是u对象我该如何获取它我将通过示例进行说明,我想获取变量使用Java我该怎么做
{
"data": [
{
"id": "40406",
"processInstanceId": "40398",
"processInstanceUrl": "http://10.6.99.57:8888/activiti-
rest/service/history/historic-process-instances/40398",
"taskId": null,
"variable": {
"name": "nbj",
"type": "string",
"value": "3",
"scope": null
}
},
{
"id": "40408",
"processInstanceId": "40398",
"processInstanceUrl": "http://10.6.99.57:8888/activiti-
rest/service/history/historic-process-instances/40398",
"taskId": null,
"variable": {
"name": "nom",
"type": "string",
"value": "yasmine",
"scope": null
}
},
{
"id": "40404",
"processInstanceId": "40398",
"processInstanceUrl": "http://10.6.99.57:8888/activiti-
rest/service/history/historic-process-instances/40398",
"taskId": null,
"variable": {
"name": "reponse",
"type": "string",
"value": "1",
"scope": null
}
}
],
答案 0 :(得分:0)
我猜您想执行rest调用并使用java读取rest响应。您可以使用Spring RestTemplate类和“ restTemplate.exchange”来执行调用。然后,您将需要使用jackson库读取响应,该库会将json转换为java对象-在这种情况下为java对象的集合。 Baeldung有restTemplate和jackson的指南。您可以将Java类基于was originally used to generate the json的Java。您可能会发现设置@JsonIgnoreProperties(ignoreUnknown = true)很有用,这样您就不必在Java中为所有json建模。或者,您可以通过将响应读取为String开头,以便首先可以看到rest调用正在正确执行。