import com.jayway.jsonpath.spi.mapper.GsonMappingProvider; //导入依赖的package包/类
@Test
public void personToJsonString() {
    Person duke = new Person("Duke", LocalDate.of(1995, 5, 23));
    duke.setPhoneNumbers(
            Arrays.asList(
                    new PhoneNumber(HOME, "100000"),
                    new PhoneNumber(OFFICE, "200000")
            )
    );

    Jsonb jsonMapper = JsonbBuilder.create();
    String json = jsonMapper.toJson(duke);

    LOG.log(Level.INFO, "converted json result: {0}", json);

    String name = JsonPath.parse(json).read("$.name");
    assertEquals("Duke", name);

    Configuration config = Configuration.defaultConfiguration()
            .jsonProvider(new GsonJsonProvider())
            .mappingProvider(new GsonMappingProvider());
    TypeRef<List<String>> typeRef = new TypeRef<List<String>>() {
    };

    List<String> numbers = JsonPath.using(config).parse(json).read("$.phoneNumbers[*].number", typeRef);

    assertEquals(Arrays.asList("100000", "200000"), numbers);
}
 

import com.jayway.jsonpath.spi.mapper.GsonMappingProvider; //导入依赖的package包/类
/**
 * Remove a subelement in a JsonPath
 *
 * @param jsonString String of the json
 * @param expr       regex to be removed
 */

public String removeJSONPathElement(String jsonString, String expr) {

    Configuration conf = Configuration.builder().jsonProvider(new GsonJsonProvider()).mappingProvider(new GsonMappingProvider()).build();
    DocumentContext context = JsonPath.using(conf).parse(jsonString);
    context.delete(expr);
    return context.jsonString();
}