我在Ubuntu服务器上使用Elastic Search 2.4.5。我需要通过我的Java应用程序访问一些记录。首先，这里是对象在弹性服务器中的显示方式。
{
"total": 1,
"max_score": 1.0,
"hits": [{
"_index": "ensembl",
"_type": "track",
"_id": "1",
"_score": 1.0,
"_source": {
"version": "1.0.0",
"short_name": "GENCODE M24",
"long_name": "GENCODE gene set for Mouse Build 24",
"description": "The gencode gene set is ...",
"track_type": "gene",
"genome": {
"genome_species": "mus_musculus",
"genome_assembly": "GRCm38",
"genome_strain": 0
},
"release": {
"release_division": "ensembl",
"release_version": 89
},
"location": {
"location_type": "mysql",
"location_object_type": "gene",
"location_species": "mus_musculus",
"location_dbtype": "core",
"location_logic_names": "ensembl"
}
}
你可以看到基因组，发布和位置都有一些子对象。为了访问这个数据对象，我为此创建了java模型类。这是我创建的代码。
package com.chanaka.book.model;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
@Document(indexName = "ensembl", type = "track")
public class Track {
@Id
private int id;
private String short_name;
private String long_name;
private String description;
private String track_type;
private String genome_species;
private String genome_assembly;
private boolean genome_strain;
private String release_division;
private int release_version;
private String location_type;
private String location_object_type;
private String location_species;
private String location_dbtype;
private String location_logic_names;
public Track() {
}
public Track(int id, String short_name, String long_name, String description, String track_type, String genome_species, String genome_assembly, boolean genome_strain, String release_division, int release_version, String location_type, String location_object_type, String location_species, String location_dbtype, String location_logic_names) {
this.id = id;
this.short_name = short_name;
this.long_name = long_name;
this.description = description;
this.track_type = track_type;
this.genome_species = genome_species;
this.genome_assembly = genome_assembly;
this.genome_strain = genome_strain;
this.release_division = release_division;
this.release_version = release_version;
this.location_type = location_type;
this.location_object_type = location_object_type;
this.location_species = location_species;
this.location_dbtype = location_dbtype;
this.location_logic_names = location_logic_names;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getShort_name() {
return short_name;
}
public void setShort_name(String short_name) {
this.short_name = short_name;
}
public String getLong_name() {
return long_name;
}
public void setLong_name(String long_name) {
this.long_name = long_name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getTrack_type() {
return track_type;
}
public void setTrack_type(String track_type) {
this.track_type = track_type;
}
public String getGenome_species() {
return genome_species;
}
public void setGenome_species(String genome_species) {
this.genome_species = genome_species;
}
public String getGenome_assembly() {
return genome_assembly;
}
public void setGenome_assembly(String genome_assembly) {
this.genome_assembly = genome_assembly;
}
public boolean isGenome_strain() {
return genome_strain;
}
public void setGenome_strain(boolean genome_strain) {
this.genome_strain = genome_strain;
}
public String getRelease_division() {
return release_division;
}
public void setRelease_division(String release_division) {
this.release_division = release_division;
}
public int getRelease_version() {
return release_version;
}
public void setRelease_version(int release_version) {
this.release_version = release_version;
}
public String getLocation_type() {
return location_type;
}
public void setLocation_type(String location_type) {
this.location_type = location_type;
}
public String getLocation_object_type() {
return location_object_type;
}
public void setLocation_object_type(String location_object_type) {
this.location_object_type = location_object_type;
}
public String getLocation_species() {
return location_species;
}
public void setLocation_species(String location_species) {
this.location_species = location_species;
}
public String getLocation_dbtype() {
return location_dbtype;
}
public void setLocation_dbtype(String location_dbtype) {
this.location_dbtype = location_dbtype;
}
public String getLocation_logic_names() {
return location_logic_names;
}
public void setLocation_logic_names(String location_logic_names) {
this.location_logic_names = location_logic_names;
}
@Override
public String toString() {
return "Track{" +
"id=" + id +
", short_name='" + short_name + '\'' +
", long_name='" + long_name + '\'' +
", description='" + description + '\'' +
", track_type='" + track_type + '\'' +
", genome_species='" + genome_species + '\'' +
", genome_assembly='" + genome_assembly + '\'' +
", genome_strain=" + genome_strain +
", release_division='" + release_division + '\'' +
", release_version=" + release_version +
", location_type='" + location_type + '\'' +
", location_object_type='" + location_object_type + '\'' +
", location_species='" + location_species + '\'' +
", location_dbtype='" + location_dbtype + '\'' +
", location_logic_names='" + location_logic_names + '\'' +
'}';
}
}
此处还有我正在使用的控制器代码来访问此模型并从Elastic Server获取数据。
public class TrackController {
@Autowired
private TrackService trackService;
@RequestMapping(method = RequestMethod.GET)
private Iterable<Track> findAll() {
return trackService.findAll();
}
}
但是当我运行代码时，会出现正常json对象中的那些值。但嵌套的json对象中的那些值，不会出现在结果中。这是我来到这里的结果。
{
"content": [
{
"id": 0,
"short_name": "GENCODE M24",
"long_name": "GENCODE gene set for Mouse Build 24",
"description": "The gencode gene set is ...",
"track_type": "gene",
"genome_species": null,
"genome_assembly": null,
"genome_strain": false,
"release_division": null,
"release_version": 0,
"location_type": null,
"location_object_type": null,
"location_species": null,
"location_dbtype": null,
"location_logic_names": null
}
],
"last": true,
"totalElements": 1,
"totalPages": 1,
"sort": null,
"numberOfElements": 1,
"first": true,
"size": 1,
"number": 0
}
您可以看到这些字段为null.ow将这些值输出到我的输出中？我是否需要更改Track模型类？