如何从json响应中动态删除字段？

如何从json响应中动态删除字段？

我也在为此要求而苦苦挣扎。

我正在使用Spring Boot 1.2.3。

Views.java

package demo;public class Views {    static interface Public {}    static interface Internal extends Public {}}

album.java

package demo;import com.fasterxml.jackson.annotation.JsonView;public class Album {    @JsonView(Views.Public.class)    private String id;    @JsonView(Views.Public.class)    private String title;    @JsonView(Views.Public.class)    private String artist;    @JsonView(Views.Internal.class)    private String secret;    public Album(String id, String title, String artist, String secret) {        this.id = id;        this.title = title;        this.artist = artist;        this.secret = secret;    }}

AlbumController.java

package demo;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.http.MediaType;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RestController;import com.fasterxml.jackson.core.JsonProcessingException;import com.fasterxml.jackson.databind.ObjectMapper;import com.fasterxml.jackson.databind.ObjectWriter;@RestControllerpublic class AlbumController {    @Autowired    ObjectMapper mapper;    @RequestMapping(value = "/album", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)    public String getAlbum() throws JsonProcessingException {        Album foo = new Album("1", "foo", "John Doe", "secretProperty");        // replace the following value with runtime logic of your choice,        // e.g. role of a user        boolean forInternal = false;        ObjectWriter viewWriter;        if (forInternal) { viewWriter = mapper.writerWithView(Views.Internal.class);        } else { viewWriter = mapper.writerWithView(Views.Public.class);        }        return viewWriter.writevalueAsString(foo);    }}

因此，关键是使用杰克逊的ObjectMapper和ObjectWriter生成对象的json表示形式的
字符串 。

对我来说有点丑陋，但是有效。当然，问题仍然在于定义多个时如何缩放

RequestMapping

。