2020101802

如每周总结所说，HBase无法解析的问题是本机的主机名未采用纯英文导致。改用英文后解决。

HBase连接工具类

  1 package konoha.util;
  2 
  3 import java.io.IOException;
  4 
  5 import org.apache.hadoop.conf.Configuration;
  6 import org.apache.hadoop.hbase.HBaseConfiguration;
  7 import org.apache.hadoop.hbase.HColumnDescriptor;
  8 import org.apache.hadoop.hbase.HTableDescriptor;
  9 import org.apache.hadoop.hbase.TableName;
 10 import org.apache.hadoop.hbase.client.Admin;
 11 import org.apache.hadoop.hbase.client.Connection;
 12 import org.apache.hadoop.hbase.client.ConnectionFactory;
 13 import org.apache.hadoop.hbase.client.Delete;
 14 import org.apache.hadoop.hbase.client.Get;
 15 import org.apache.hadoop.hbase.client.Put;
 16 import org.apache.hadoop.hbase.client.Result;
 17 import org.apache.hadoop.hbase.client.ResultScanner;
 18 import org.apache.hadoop.hbase.client.Scan;
 19 import org.apache.hadoop.hbase.client.Table;
 20 import org.apache.hadoop.hbase.util.Bytes;
 21 
 22 public class HBaseTestUtil {
 23     public static Configuration configuration;
 24     public static Connection connection;
 25     public static Admin admin;
 26 
 27     public static void init() {
 28         configuration = HBaseConfiguration.create();
 29         configuration.set("hbase.zookeeper.quorum", "localhost");
 30         configuration.set("hbase.zookeeper.property.clientPort", "2181");
 31         try {
 32             connection = ConnectionFactory.createConnection(configuration);
 33             admin = connection.getAdmin();
 34         } catch (IOException e) {
 35             e.printStackTrace();
 36         }
 37     }
 38 
 39     public static void close() {
 40         try {
 41             if (admin != null) {
 42                 admin.close();
 43             }
 44             if (null != connection) {
 45                 connection.close();
 46             }
 47         } catch (IOException e) {
 48             e.printStackTrace();
 49         }
 50     }
 51 
 52     public static void getDataTest() throws Exception {
 53         init();
 54         Table table = connection.getTable(TableName.valueOf("Student"));
 55         Get get = new Get(Bytes.toBytes("scofield"));
 56         get.addColumn(Bytes.toBytes("English"), Bytes.toBytes(""));
 57         Result result = table.get(get);
 58         System.out.println(new String(result.getValue("English".getBytes(), null)));
 59         table.close();
 60     }
 61 
 62     public static void createTable(String myTableName, String[] colFamily) throws IOException {
 63         init();
 64         TableName tableName = TableName.valueOf(myTableName);
 65         if (admin.tableExists(tableName)) {
 66             System.out.println("talbe is exists!");
 67             admin.disableTable(tableName);
 68             admin.deleteTable(tableName);
 69         }
 70         HTableDescriptor hTableDescriptor = new HTableDescriptor(tableName);
 71         for (String str : colFamily) {
 72             HColumnDescriptor hColumnDescriptor = new HColumnDescriptor(str);
 73             hTableDescriptor.addFamily(hColumnDescriptor);
 74             admin.createTable(hTableDescriptor);
 75             System.out.println("create table success");
 76         }
 77         close();
 78     }
 79 
 80     public static void addRecord(String tableName, String row, String[] fields, String[] values) throws IOException {
 81         init();
 82         Table table = connection.getTable(TableName.valueOf(tableName));
 83         for (int i = 0; i < fields.length; i++) {
 84             Put put = new Put(row.getBytes());
 85             String[] cols = fields[i].split(":");
 86             put.addColumn(cols[0].getBytes(), cols[1].getBytes(), values[i].getBytes());
 87             table.put(put);
 88         }
 89         table.close();
 90         close();
 91     }
 92 
 93     public static void scanColumn(String tableName, String column) throws IOException {
 94         init();
 95         Table table = connection.getTable(TableName.valueOf(tableName));
 96         Scan scan = new Scan();
 97         scan.addFamily(Bytes.toBytes(column));
 98         ResultScanner scanner = table.getScanner(scan);
 99         for (Result result = scanner.next(); result != null; result = scanner.next()) {
100             System.out.println(result);
101         }
102         table.close();
103         close();
104     }
105 
106     public static void modiyData(String tableName, String row, String column, String val) throws IOException {
107         init();
108         Table table = connection.getTable(TableName.valueOf(tableName));
109         Put put = new Put(row.getBytes());
110         String[] cols = column.split(":");
111         put.addColumn(cols[0].getBytes(), cols[1].getBytes(), val.getBytes());
112         table.put(put);
113         table.close();
114         close();
115     }
116 
117     public static void deleteRow(String tableName, String row) throws IOException {
118         init();
119         Table table = connection.getTable(TableName.valueOf(tableName));
120         Delete delete = new Delete(row.getBytes());
121         table.delete(delete);
122         table.close();
123         close();
124     }
125 
126     public static void getData(String tableName, String rowKey, String colFamily, String col) throws IOException {
127         Table table = connection.getTable(TableName.valueOf(tableName));
128         Get get = new Get(Bytes.toBytes(rowKey));
129         get.addColumn(Bytes.toBytes(colFamily), Bytes.toBytes(col));
130         Result result = table.get(get);
131         System.out.println(new String(result.getValue(colFamily.getBytes(), col == null ? null : col.getBytes())));
132         table.close();
133     }
134 
135     public static void insertData(String tableName, String rowKey, String colFamily, String col, String val)
136             throws IOException {
137         Table table = connection.getTable(TableName.valueOf(tableName));
138         Put put = new Put(Bytes.toBytes(rowKey));
139         put.addColumn(Bytes.toBytes(colFamily), Bytes.toBytes(col), Bytes.toBytes(val));
140         table.put(put);
141         table.close();
142     }
143 
144     public static void main(String[] args) {
145         try {
146             scanColumn("Student", "S_Name");
147         } catch (Exception e) {
148             // TODO Auto-generated catch block
149             e.printStackTrace();
150         }
151     }
152 }

HBaseTestUtil

修改后的录入处理JSP

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<%@page import="java.sql.*" %>  
<%@page import="java.io.PrintWriter" %>
<%@page import="java.io.IOException" %>  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>提交中....</title>
</head>
<body>


  <jsp:useBean id="db" class="bean.DBean" scope="page" />
  <%@ page import = "Serial.SerialID"%> 
<%
    request.setCharacterEncoding("UTF-8");
    SerialID serial=new SerialID();
        String demandID="";
        demandID=serial.get(demandID);
        //System.out.println(demandID);
        String unitID="";
        String unitName="";
        String unitDepartment="";
        String unitAddress="";
        String unitCity="";
        String unitURL="";
        String unitEmail="";
        String unitLPeople="";
        String unitZipCode="";
        String unitCPeople="";
        String unitPhone="";
        String unitMPhone="";
        String unitFax="";
        String unitAttribute="";
        String unitIntroduce="";
        
        String userID=(String)session.getAttribute("LoginID");
        String sql="select * from unit where userID="+"'"+userID+"'";
        ResultSet rss=db.executeQuery(sql);
        while(rss.next())
        {
            unitID=rss.getString("unitID");
            unitName=rss.getString("unitName");
            unitDepartment=rss.getString("unitDepartment");
            unitAddress=rss.getString("unitAddress");
            unitCity=rss.getString("unitCity");
            unitURL=rss.getString("unitURL");
            unitEmail=rss.getString("unitEmail");
            unitLPeople=rss.getString("unitLPeople");
            unitZipCode=rss.getString("unitZipCode");
            unitCPeople=rss.getString("unitCPeople");
            unitPhone=rss.getString("unitPhone");
            unitMPhone=rss.getString("unitMPhone");
            unitFax=rss.getString("unitFax");
            unitAttribute=rss.getString("unitAttribute");
            unitIntroduce=rss.getString("unitIntroduce");
        }
        
        
        String demandName=(String)request.getParameter("demandName");
        String demandStart=(String)request.getParameter("demandStart");
        String demandEnd=(String)request.getParameter("demandEnd");
        String demandMain=(String)request.getParameter("demandMain");
        String demandKey=(String)request.getParameter("demandKey");
        String demandTarget=(String)request.getParameter("demandTarget");
        String demandKeyWord1=(String)request.getParameter("demandKeyWord1");
        String demandKeyWord2=(String)request.getParameter("demandKeyWord2");
        String demandKeyWord3=(String)request.getParameter("demandKeyWord3");
        String demandKeyWord4=(String)request.getParameter("demandKeyWord4");
        String demandKeyWord5=(String)request.getParameter("demandKeyWord5");
        String demandLoan=(String)request.getParameter("demandLoan");
        String demandResearchMode=(String)request.getParameter("demandResearchMode");
        String demandCooperationUnit=(String)request.getParameter("demandCooperationUnit");
        String demandTechnology=(String)request.getParameter("demandTechnology");
        String demandClass3=(String)request.getParameter("Classification3");
        String demandDomain=(request.getParameter("Filed1")+request.getParameter("Filed2")+
                request.getParameter("Filed3")+request.getParameter("Filed4")+
                request.getParameter("Filed5")+request.getParameter("Filed6")
                +request.getParameter("Filed7")+request.getParameter("Filed8")
                +request.getParameter("Filed9")+request.getParameter("Filed10")
                +request.getParameter("Filed11")+request.getParameter("Filed12")).replaceAll("null","");
        String demandEconomicClass3=(String)request.getParameter("Industry3");
        String submitType=(String)request.getParameter("submitType");
        String s ="Select * From Requirement";
        ResultSet rs = db.executeQuery(s);
        String demandKeyWord = demandKeyWord1;
        if(!demandKeyWord2.equals("")){
            demandKeyWord = demandKeyWord+" "+demandKeyWord2;
        }
        if(!demandKeyWord3.equals("")){
            demandKeyWord = demandKeyWord+" "+demandKeyWord3;
        }
        if(!demandKeyWord4.equals("")){
            demandKeyWord = demandKeyWord+" "+demandKeyWord4;
        }
        if(!demandKeyWord5.equals("")){
            demandKeyWord = demandKeyWord+" "+demandKeyWord5;
        }
        
        System.out.println("[INFO]Intalizing...");
        HBaseTestUtil.init();
        try {
            System.out.println("[INFO]Start INSERT into table@HBase");
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitID", unitID);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitName", unitName);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitDepartment", unitDepartment);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitAddress", unitAddress);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitCity", unitCity);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitURL", unitURL);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitMail", unitEmail);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitLPeople", unitLPeople);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitZipCode", unitZipCode);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitCPeople", unitCPeople);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitPhone", unitPhone);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitMPhone", unitMPhone);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitFax", unitFax);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitAttribute", unitAttribute);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitIntroduce", unitIntroduce);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandName", demandName);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandStart", demandStart);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandEnd", demandEnd);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandMain", demandMain);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandKey", demandKey);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandTarget", demandTarget);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandName", demandName);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandKeyWord1", demandKeyWord1);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandKeyWord2", demandKeyWord2);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandKeyWord3", demandKeyWord3);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandKeyWord4", demandKeyWord4);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandKeyWord5", demandKeyWord5);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandLoan", demandLoan);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandResearchMode", demandResearchMode);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandCooperationUnit", demandCooperationUnit);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandTechnology", demandTechnology);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandClass3", demandClass3);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandDomain", demandDomain);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandEconomicClass3", demandEconomicClass3);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitstaffID1", "");
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "unitstaffID2", "");
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandState1", submitType);
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "demandState2", "未审核");
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "Auditopinion", "");
            HBaseTestUtil.insertData("Requirement", demandID, "demandInfo", "Auditdepartment", "");
            System.out.println("[INFO]Insert into table@HBase Success");
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        HBaseTestUtil.close();
        db.close(); 
        System.out.println("[INFO]Process Done");
        
    %>    
        
</body>
</html>

JSP文件代码

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原文地址：https://www.cnblogs.com/minadukirinno/p/14199328.html