hbase 提供了rest api来操作访问hbase.

1. 启动REST服务 

  a.启动一个非守护进程模式的REST服务器(ctrl+c 终止)

     bin/hbase rest start 

  b.启动守护进程模式的REST服务器

     bin/hbase-daemon.sh start rest

  默认启动的是8080端口(可以使用参数在启动时指定端口 hbase-daemon.sh start rest -p8080)，可以被访问。eg.  curl  http://:8080/

2.获取表list(get请求)：
http://example.com:8080/

返回结果：

{"table":[{"name":"TSL_EvcRealTimeData"},{"name":"test"},{"name":"test2"}]}

java代码案例：

public static String getTableList(String acceptInfo){
 String uriAPI = "http://example.com:8080/";
 String result = "";
 HttpGet httpRequst = new HttpGet(uriAPI);
   try {
     httpRequst.setHeader("accept", acceptInfo);
     HttpResponse httpResponse = new DefaultHttpClient().execute(httpRequst);
     // 其中HttpGet是HttpUriRequst的子类
     int statusCode = httpResponse.getStatusLine().getStatusCode();
       if (statusCode == 200 || statusCode == 403) {
         HttpEntity httpEntity = httpResponse.getEntity();
         result = EntityUtils.toString(httpEntity);// 取出应答字符串
         // 一般来说都要删除多余的字符
         // 去掉返回结果中的"\r"字符，否则会在结果字符串后面显示一个小方格
         // result.replaceAll("\r", "");
       } else {
         httpRequst.abort();
         result = "异常的返回码:"+statusCode;
       }
     } catch (ClientProtocolException e) {
       e.printStackTrace();
       result = e.getMessage().toString();
     } catch (IOException e) {
       e.printStackTrace();
       result = e.getMessage().toString();
 }
 return result;
}

3.获取表结构(get请求)：
http://example.com:8080/tableName/schema

返回结果：

{"name":"TSL_EvcRealTimeData","ColumnSchema":[{"name":"info","BLOOMFILTER":"ROW","VERSIONS":"1","IN_MEMORY":"false","KEEP_DELETED_CELLS":"FALSE","DATA_BLOCK_ENCODING":"NONE","TTL":"2147483647","COMPRESSION":"NONE","MIN_VERSIONS":"0","BLOCKCACHE":"true","BLOCKSIZE":"65536","REPLICATION_SCOPE":"0"}],"IS_META":"false"}

java代码举例：

public static String getSchemaInfo(String tableName, String acceptInfo) {
 String uriAPI = "http://example.com:8080/" + tableName + "/schema";
 String result = "";
 HttpGet httpRequst = new HttpGet(uriAPI);
   try {
     httpRequst.setHeader("accept", acceptInfo);
     HttpResponse httpResponse = new DefaultHttpClient().execute(httpRequst);
     // 其中HttpGet是HttpUriRequst的子类
     int statusCode = httpResponse.getStatusLine().getStatusCode();
     f (statusCode == 200 || statusCode == 403) {
       HttpEntity httpEntity = httpResponse.getEntity();
       result = EntityUtils.toString(httpEntity);// 取出应答字符串
       // 一般来说都要删除多余的字符
       // 去掉返回结果中的"\r"字符，否则会在结果字符串后面显示一个小方格
       // result.replaceAll("\r", "");
      } else {
       httpRequst.abort();
       result = "异常的返回码:"+statusCode;
     }
   } catch (ClientProtocolException e) {
     e.printStackTrace();
     result = e.getMessage().toString();
   } catch (IOException e) {
     e.printStackTrace();
     result = e.getMessage().toString();
 }
 return result;
}

4.创建一张表(post请求)：
http://example.com:8000/newTableName/schema

返回结果：

新建成功： 201 表存在并替换成功：200

java代码举例：

public static String createHtable(String newTableName, String jsonOrXmlStr,String jsonOrXml) {
       String uriAPI = "http://example.com:8080/" + newTableName + "/schema";
       String result = "";
       HttpPost httpRequst = new HttpPost(uriAPI);
       try {
           StringEntity s = new StringEntity(jsonOrXmlStr.toString());
           httpRequst.setHeader("accept", jsonOrXml);
           httpRequst.setHeader("Content-Type", jsonOrXml);
           httpRequst.setEntity(s);
           HttpResponse httpResponse = new DefaultHttpClient().execute(httpRequst);
           // 其中HttpGet是HttpUriRequst的子类
           int statusCode = httpResponse.getStatusLine().getStatusCode();
           if (statusCode == 200||statusCode == 201) {
               HttpEntity httpEntity = httpResponse.getEntity();
               result = "code=>"+statusCode+":"+EntityUtils.toString(httpEntity);// 取出应答字符串
               // 一般来说都要删除多余的字符
               // 去掉返回结果中的"\r"字符，否则会在结果字符串后面显示一个小方格
               // result.replaceAll("\r", "");
           } else {
               httpRequst.abort();
               result = "没有返回正确的状态码，请仔细检查请求表名";
           }
       } catch (ClientProtocolException e) {
           e.printStackTrace();
           result = e.getMessage().toString();
       } catch (IOException e) {
           e.printStackTrace();
           result = e.getMessage().toString();
       }
       return result;
   }

当然hbase还有很多很丰富的rest api,提供给开发者，上面只是简单举例

5.更多的api接口

curl -vi -X GET \
  -H "Accept: text/xml" \
  "http://example.com:8000/users/schema"

curl -vi -X POST \
  -H "Accept: text/xml" \
  -H "Content-Type: text/xml" \
  -d '' \
  "http://example.com:8000/users/schema"

curl -vi -X PUT \
  -H "Accept: text/xml" \
  -H "Content-Type: text/xml" \
  -d '' \
  "http://example.com:8000/users/schema"

curl -vi -X DELETE \
  -H "Accept: text/xml" \
  "http://example.com:8000/users/schema"

curl -vi -X GET \
  -H "Accept: text/xml" \
  "http://example.com:8000/users/regions

具体参考hbase官方文档的hbase章节：http://hbase.apache.org/book.html#_rest