一、説明
1、elasticsearch版本:6.2.4 。
jdk版本:1.8(該升級趕緊升級吧,現在很多技術都是最低要求1.8)。
jest版本:5.3.3。
2、一些不錯的文章
二、前提:
1、最好已經大概看過es的官方文檔,附上文檔地址:
2、知道自己需要的es命令:
比如想用jest進行索引模版的相關操作,需要知道操作模版的命令是“template” 等等。然後能在官方文檔裏查到相關命令的詳細操作。
簡單説就是現在已經知道怎麼在 es裏進行相關操作了。現在想要用jest進行實現。
三、開始:
1、pom依賴:
2、jest初始化,這裏就不説了。直接開始操作了,簡單説幾個命令拋磚引玉:
www.elastic.co/guide/cn/elasticsearch/guide/cn/index-templates.html
_template”。
現在在jest的jar包裏找 “template”相關的類
其實寫到這 大概應該知道啥意思了。補張圖:
寫的有點亂,以後整理吧。
-------------------------2018-07-17------------------------------------
附上自己的代碼實現(index的一些操作)。數據操作之後整理完,再發。
public void createIndex(String index) {
try {
JestResult jestResult = jestClient.execute(new CreateIndex.Builder(index).build());
System.out.println("createIndex:{}" + jestResult.isSucceeded());
} catch (IOException e) {
e.printStackTrace();
}
}
刪除index
public void deleteIndex(String index) {
try {
JestResult jestResult = jestClient.execute(new DeleteIndex.Builder(index).build());
System.out.println("deleteIndex result:{}" + jestResult.isSucceeded());
} catch (IOException e) {
e.printStackTrace();
}
}
設置index的mapping(設置數據類型和分詞方式)
public void createIndexMapping(String index, String type, String mappingString) {
//mappingString為拼接好的json格式的mapping串
PutMapping.Builder builder = new PutMapping.Builder(index, type, mappingString);
try {
JestResult jestResult = jestClient.execute(builder.build());
System.out.println("createIndexMapping result:{}" + jestResult.isSucceeded());
if (!jestResult.isSucceeded()) {
System.err.println("settingIndexMapping error:{}" + jestResult.getErrorMessage());
}
} catch (IOException e) {
e.printStackTrace();
}
}
獲取index的mapping
public String getMapping(String indexName, String typeName) {
GetMapping.Builder builder = new GetMapping.Builder();
builder.addIndex(indexName).addType(typeName);
try {
JestResult result = jestClient.execute(builder.build());
if (result != null && result.isSucceeded()) {
return result.getSourceAsObject(JsonObject.class).toString();
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
獲取索引index設置setting
public boolean getIndexSettings(String index) {
try {
JestResult jestResult = jestClient.execute(new GetSettings.Builder().addIndex(index).build());
System.out.println(jestResult.getJsonString());
if (jestResult != null) {
return jestResult.isSucceeded();
}
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
更改索引index設置setting
public boolean updateIndexSettings(String index) {
String source;
XContentBuilder mapBuilder = null;
try {
mapBuilder = XContentFactory.jsonBuilder();
mapBuilder.startObject().startObject("index").field("max_result_window", "1000000").endObject().endObject();
source = mapBuilder.string();
JestResult jestResult = jestClient.execute(new UpdateSettings.Builder(source).build());
System.out.println(jestResult.getJsonString());
if (jestResult != null) {
return jestResult.isSucceeded();
}
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
獲取索引 別名
public boolean getIndexAliases(String index) {
try {
JestResult jestResult = jestClient.execute(new GetAliases.Builder().addIndex(index).build());
System.out.println(jestResult.getJsonString());
if (jestResult != null) {
return jestResult.isSucceeded();
}
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
添加索引別名
public void addAlias(List<String> index, String alias) {
try {
AddAliasMapping build = new AddAliasMapping.Builder(index, alias).build();
JestResult jestResult = jestClient.execute(new ModifyAliases.Builder(build).build());
System.out.println("result:" + jestResult.getJsonString());
} catch (IOException e) {
e.printStackTrace();
}
}
獲取索引模版
public void getTemplate(String template) {
try {
JestResult jestResult = jestClient.execute(new GetTemplate.Builder(template).build());
System.out.println("result:" + jestResult.getJsonString());
} catch (IOException e) {
e.printStackTrace();
}
}
添加索引模版
public void putreturnreportTemplate() {
String source;
XContentBuilder mapBuilder = null;
try {
mapBuilder = XContentFactory.jsonBuilder();
mapBuilder.startObject().field("template", "df_returnreport*").field("order", 1)//
.startObject("settings").field("number_of_shards", 5)//五個分片
.startObject("index").field("max_result_window", "1000000")//一次查詢最大一百萬
.endObject()//
.endObject()//
.startObject("mappings")//
.startObject("df_returnreport")//type名
.startObject("properties")//
.startObject("id").field("type", "long").endObject()//
.startObject("username").field("type", "keyword").endObject()//
.startObject("content").field("type", "text").field("analyzer", "ik_max_word").endObject()//
.startObject("returntime").field("type", "date").field("format", "yyyy-MM-dd HH:mm:ss").endObject()//
.startObject("gateway").field("type", "integer").endObject()//
.endObject()//
.endObject()//
.endObject()//
.startObject("aliases").startObject("df_returnreport").endObject().endObject()//別名
.endObject();//
source = mapBuilder.string();
JestResult jestResult = jestClient.execute(new PutTemplate.Builder("my_returnreport", source).build());
System.out.println("result:" + jestResult.getJsonString());
} catch (IOException e) {
e.printStackTrace();
}
}
索引優化
public void optimizeIndex() {
Optimize optimize = new Optimize.Builder().build();
jestClient.executeAsync(optimize, new JestResultHandler<JestResult>() {
public void completed(JestResult jestResult) {
System.out.println("optimizeIndex result:{}" + jestResult.isSucceeded());
}
public void failed(Exception e) {
e.printStackTrace();
}
});
}
清理緩存
public void clearCache() {
try {
ClearCache clearCache = new ClearCache.Builder().build();
jestClient.execute(clearCache);
} catch (IOException e) {
e.printStackTrace();
}
}