JsonPath使用说明

 

依赖包:

        <dependency>
            <groupId>com.jayway.jsonpath</groupId>
            <artifactId>json-path</artifactId>
            <version>2.4.0</version>
        </dependency>

 

代码:

package json.jsonpath;

import com.google.gson.JsonObject;
import com.jayway.jsonpath.JsonPath;
import org.apache.commons.io.FileUtils;

import java.io.File;
import java.io.IOException;
import java.util.List;

/**
 * 测试Jsonpath
 * 作用:通过路径获取Json字段值
 */
public class MyJsonPath {
    public static void main(String[] args) throws IOException {
        String json = FileUtils.readFileToString(new File("src/main/resource/json/jq.json"), "utf8");
        System.out.println("Json:" + json);

        /**
         * 根据路径获取值
         * */
        String bjnr = JsonPath.read(json, "$.data.bjnr");
        System.out.println("报警内容:" + bjnr);

        String isInvolved = JsonPath.read(json, "$.data.isInvolved");
        System.out.println("报警人是否是涉案人:" + isInvolved);

        /**
         * 可以提前编辑一个路径,并多次使用它
         * */
        JsonPath path = JsonPath.compile("$.data.keywords");
        System.out.println("keywords:" + path.read(json));

        /**
         * 获取JSON中的对象数组
         * */
        List<JsonObject> hwList = JsonPath.read(json, "$.data.hwList");
        System.out.println("hwList:" + hwList);

        /**
         * 获取JSON中的所有id的值
         * */
        List<String> ids = JsonPath.read(json, "$..id");
        System.out.println("ids:" + ids);

    }
}

测试结果:

报警内容:报警人称发现一名小偷(男性,30岁左右,1米63,棕色外套,红色毛衣)往好利达超市方向逃跑。
报警人是否是涉案人:2
keywords:人称发现,发现小偷,方向逃跑
hwList:[{"id":24,"highFWords":"报警","count":46266,"pos":null,"section":"10000以上"},{"id":26,"highFWords":"人称","count":17806,"pos":null,"section":"10000以上"}]
ids:[24,26]

 json:

{
  "code": 200,
  "message": "查询成功",
  "data": {
    "jjdbh": "3323422",
    "danger": "",
    "keywords": "人称发现,发现小偷,方向逃跑",
    "verb": "发现,逃跑",
    "noun": "报警,人称,小偷,男性,棕色,外套,毛衣,利达,超市,方向",
    "adv": "往好","bjnr": "报警人称发现一名小偷(男性,30岁左右,1米63,棕色外套,红色毛衣)往好利达超市方向逃跑。",
    "fxwp": "2","hwList": [
      {
        "id": 24,
        "highFWords": "报警",
        "count": 46266,
        "pos": null,
        "section": "10000以上"
      },
      {
        "id": 26,
        "highFWords": "人称",
        "count": 17806,
        "pos": null,
        "section": "10000以上"
      }
    ],
    "isInvolved": "2"
  }
}

 

posted @ 2020-06-24 18:13  星瑞  阅读(747)  评论(0编辑  收藏  举报