spring中使用JsonFilter的动态序列化

public class User {
    private String username;

    @JsonFilter("userFilter")
    private String email;

    // getters and setters
}

@RestController
public class UserController {
    @GetMapping("/user")
    public MappingJacksonValue getUser() {
        User user = new User();
        user.setUsername("John");
        user.setEmail("john@example.com");

        MappingJacksonValue mappingJacksonValue = new MappingJacksonValue(user);
        return mappingJacksonValue;
    }
}

@RestController
public class UserController {
    @GetMapping("/user")
    public MappingJacksonValue getUser() {
        User user = new User();
        user.setUsername("John");
        user.setEmail("john@example.com");

        MappingJacksonValue mappingJacksonValue = new MappingJacksonValue(user);

        SimpleFilterProvider filterProvider = new SimpleFilterProvider();
        filterProvider.addFilter("userFilter", SimpleBeanPropertyFilter.filterOutAllExcept("username"));

        mappingJacksonValue.setFilters(filterProvider);

        return mappingJacksonValue;
    }
}