C#如何使用ES

1 var node = new Uri("http://myserver:9200");2 var settings = new ConnectionSettings(node);3 var client = new ElasticClient(settings);

 1 var nodes = new Uri[] 2 { 3     new Uri("http://myserver1:9200"), 4     new Uri("http://myserver2:9200"), 5     new Uri("http://myserver3:9200") 6 }; 7  8 var pool = new StaticConnectionPool(nodes); 9 var settings = new ConnectionSettings(pool);10 var client = new ElasticClient(settings);

1 var settings = new ConnectionSettings()2     .DefaultIndex("defaultindex");

1 var settings = new ConnectionSettings()2     .MapDefaultTypeIndices(m => m3         .Add(typeof(Project), "projects")4     );

1 var response = client.Index(student, s=>s.Index("db_test"));2 var result = client.Search<Student>(s => s.Index("db_test"));3 var result = client.Delete<Student>(null, s => s.Index("db_test"));4 ……

 1 //请求单一节点 2 var singleString = Nest.Indices.Index("db_studnet"); 3 var singleTyped = Nest.Indices.Index<Student>(); 4  5 ISearchRequest singleStringRequest = new SearchDe or<Student>().Index(singleString); 6 ISearchRequest singleTypedRequest = new SearchDe or<Student>().Index(singleTyped); 7  8 //请求多个节点 9 var manyStrings = Nest.Indices.Index("db_studnet", "db_other_student");10 var manyTypes = Nest.Indices.Index<Student>().And<OtherStudent>();11 12 ISearchRequest manyStringRequest = new SearchDe or<Student>().Index(manyStrings);13 ISearchRequest manyTypedRequest = new SearchDe or<Student>().Index(manyTypes);14 15 //请求所有节点16 var indicesAll = Nest.Indices.All;17 var allIndices = Nest.Indices.AllIndices;18 19 ISearchRequest indicesAllRequest = new SearchDe or<Student>().Index(indicesAll);20 ISearchRequest allIndicesRequest = new SearchDe or<Student>().Index(allIndices);

1 var de or = new CreateIndexDe or("db_student")2     .Settings(s => s.NumberOfShards(5).NumberOfReplicas(1));3 4 client.CreateIndex(de or);

1 var de or = new DeleteIndexDe or("db_student").Index("db_student");2 3 client.DeleteIndex(de or)

1 //删除指定索引所在节点下的所有索引2 var de or = new DeleteIndexDe or("db_student").AllIndices();

 1 [ElasticsearchType(Name = "student")] 2 public class Student 3 { 4     [Nest.String(Index = FieldIndexOption.NotAnalyzed)] 5     public string Id { get; set; } 6  7     [Nest.String(Analyzer = "standard")] 8     public string Name { get; set; } 9 10     [Nest.String(Analyzer = "standard")]11     public string De ion { get; set; }12 13     public DateTime DateTime { get; set; }14 }

1 var de or = new CreateIndexDe or("db_student")2     .Settings(s => s.NumberOfShards(5).NumberOfReplicas(1))3     .Mappings(ms => ms4         .Map<Student>(m => m.AutoMap())5     );6 7 client.CreateIndex(de or);

1 var query = new Nest.SearchDe or<Models.ES >();2 3 var result = client.Search<Student>(x => query)

 1 query.Query(q => 2     q.Bool(b => 3         b.Must(m => 4             m.MultiMatch(t => t.Fields(f => f.Field(obj => obj. ).Field(obj => obj.Content)).Query(key)) 5         ) 6         .MustNot(m => 7             m.QueryString(t => t.Fields(f => f.Field(obj => obj.Author)).Query("wenli")) 8         ) 9     )10 );

query.PostFilter(x => x.Term(t => t.Field(obj => obj.Author).Value("wenli")));

1 query.PostFilter(x => x.QueryString(t => t.Fields(f => f.Field(obj => obj.Author)).Query("wenli yswenli")));

1 query.PostFilter(x => x.Range(t => t.Field(obj => obj.Number).GreaterThanOrEquals(1).LessThanOrEquals(100)));

1 query.Sort(x => x.Field("_score", Nest.SortOrder.Descending));

1 query.Highlight(h => h2     .PreTags("<b>")3     .PostTags("</b>")4     .Fields(5         f => f.Field(obj => obj. ),6         f => f.Field(obj => obj.Content),7         f => f.Field("_all")8     )9 );

 1 var list = result.Hits.Select(c => new Models.ES () 2 { 3     Id = c.Source.Id, 4       = c.Highlights == null ? c.Source.  : c.Highlights.Keys.Contains(" ") ? string.Join("", c.Highlights[" "].Highlights) : c.Source. , //高亮显示的内容，一条记录中出现了几次 5     Content = c.Highlights == null ? c.Source.Content : c.Highlights.Keys.Contains("content") ? string.Join("", c.Highlights["content"].Highlights) : c.Source.Content, //高亮显示的内容，一条记录中出现了几次 6     Author = c.Source.Author, 7     Number = c.Source.Number, 8     IsDisplay = c.Source.IsDisplay, 9     Tags = c.Source.Tags,10     Comments = c.Source.Comments,11     DateTime = c.Source.DateTime,12 })

1 Client.Index(student);

1 var list = new List<Student>();2 3 client.IndexMany<Student>(list);

1 client.Update<Student,  >("002", upt => upt.Doc(new { Name = "wenli" }));

var ids = new List<string>() { "002" };var bulkQuest = new BulkRequest() { Operations = new List<IBulkOperation>() };foreach (var v in ids){    var operation = new BulkUpdateOperation<Student,  >(v);    operation.Doc = new { Name = "wenli" };    bulkQuest.Operations.Add(operation);}var result = client.Bulk(bulkQuest);

1 client.Delete<Student>("001");

 1 var ids = new List<string>() { "001", "002" }; 2  3 var bulkQuest = new BulkRequest() { Operations = new List<IBulkOperation>() }; 4  5 foreach (var v in ids) 6 { 7     bulkQuest.Operations.Add(new BulkDeleteOperation<Student>(v)); 8 } 9 10 var result = client.Bulk(bulkQuest);