[英]How to get the summation of values using gpath sum() in restassured on JSON Object
我試圖從以下 JSON 響應的 JSON 對象提取中找到已故計數的總和
https://api.covid19india.org/state_district_wise.json
上面的片段是 json
"Maharashtra": {
"districtData": {
"Ahmednagar": {
"notes": "",
"active": 4206,
"confirmed": 275516,
"migratedother": 1,
"deceased": 5565,
"recovered": 265744,
"delta": {
"confirmed": 559,
"deceased": 4,
"recovered": 0
}
},
我想從馬哈拉施特拉邦找到死者的總和。 我知道我們可以在 JSONArray 上使用 collect 但這里是 JSONObject。 我嘗試跟隨但無濟於事
int value=jsonPath.get("Maharashtra.districtData.collect{it.deceased}.sum()");
對象中有 2 個deceased
鍵,我假設您只想要外部對象中的deceased
。 到目前為止我得到的最簡單的解決方案。
@Test
void name3() {
Response res = RestAssured.given()
.get("https://api.covid19india.org/state_district_wise.json");
Map<String, ?> data = res.jsonPath().getMap("Maharashtra.districtData");
Set<String> keys = data.keySet();
int sum = keys.stream()
.mapToInt(key ->
JsonPath.read(res.asString(), String.format("$.Maharashtra.districtData.[\"%s\"].deceased", key)))
.sum();
System.out.println(sum); //126851
}
如果您不想使用 Java8 流。
int sum = 0;
for (String key : keys) {
int deceased = JsonPath.read(res.asString(), String.format("$.Maharashtra.districtData.[\"%s\"].deceased", key));
sum += deceased;
}
我使用 JsonPath (com.jayway.jsonpath.JsonPath)
pom.xml
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<version>2.6.0</version>
</dependency>
更新
我想出了另一個解決方案,即使用映射 POJO。
@Test
void name4() {
Response res = RestAssured.given()
.get("https://api.covid19india.org/state_district_wise.json");
Configuration configuration = Configuration.builder()
.jsonProvider(new JacksonJsonProvider())
.mappingProvider(new JacksonMappingProvider())
.build();
List<DistrictData> data = JsonPath.using(configuration).parse(res.asString())
.read("$.Maharashtra.districtData.*", new TypeRef<>() {});
int sum = data.stream().mapToInt(DistrictData::getDeceased).sum();
System.out.println(sum); //126851
}
POJO
import lombok.Data;
import java.util.Map;
@Data
public class DistrictData {
private String notes;
private int active;
private int confirmed;
private int migratedother;
private int deceased;
private int recovered;
private Map<String, Object> delta;
}
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