JsonPath is to JSON what XPATH is to XML, a simple way to extract parts of a given document. JsonPath is available in many programming languages such as Javascript, Python and PHP.

jsonpath依赖

       <json-path.version>2.3.0</json-path.version>
       <dependency>
            <groupId>com.jayway.jsonpath</groupId>
            <artifactId>json-path</artifactId>
        </dependency>

jsonpath使用

        List<String> authors = JsonPath.read(json, "$.store.book[*].author");

直接生成JsonNode

static {
        Configuration.setDefaults(new Configuration.Defaults() {

            private final JsonProvider jsonProvider = new JacksonJsonNodeJsonProvider();
            private final MappingProvider mappingProvider = new JacksonMappingProvider();

            @Override
            public JsonProvider jsonProvider() {
                return jsonProvider;
            }

            @Override
            public MappingProvider mappingProvider() {
                return mappingProvider;
            }

            @Override
            public Set<Option> options() {
                return EnumSet.noneOf(Option.class);
            }
        });
    }


        JsonNode authors = JsonPath.read(json, "$.store.book[*].author");

参考文档：
https://blog.csdn.net/koflance/article/details/63262484