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我想用jsp來執行我的java代碼。該代碼包含配置單元連接和幾個簡單的查詢。當我剛剛運行java代碼時，它正在正確執行，但是當使用jsp執行時，它會在標題中顯示錯誤。java.sql.SQLException：找不到適合jdbc的驅動程序：hive2：// localhost：10000/default使用jsp連接時連接
Java代碼
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.*;
import org.apache.hive.jdbc.HiveDriver;
public class Hive {
public void hive1() throws SQLException {
try{
String driverName = "org.apache.hive.jdbc.HiveDriver";
Connection conn = DriverManager.getConnection(
"jdbc:hive2://localhost:10000/default", "hduser", "abc");
System.out.println("Connected");
Statement stmt = conn.createStatement();
stmt.execute("CREATE TABLE IF NOT EXISTS "
+" tweets5 (id BIGINT, created_at STRING, "
+"source STRING, "
+"favorited BOOLEAN, "
+" retweet_count INT,"
+"retweeted_status STRUCT< "
+"text:STRING, "
+" user:STRUCT<screen_name:STRING,name:STRING>,"
+"retweet_count:INT>, "
+" entities STRUCT< "
+"urls:ARRAY<STRUCT<expanded_url:STRING>>, "
+"user_mentions:ARRAY<STRUCT<screen_name:STRING,name:STRING>>, "
+" hashtags:ARRAY<STRUCT<text:STRING>>>,"
+" text STRING,"
+" user STRUCT<"
+"screen_name:STRING, "
+"name:STRING, "
+"locations:STRING, "
+"friends_count:INT, "
+" followers_count:INT,"
+"statuses_count:INT, "
+"verified:BOOLEAN, "
+"utc_offset:INT, "
+"time_zone:STRING>, "
+ " in_reply_to_screen_name STRING)"
+" ROW FORMAT SERDE 'org.openx.data.jsonserde.JsonSerDe'"
+" LOCATION '/user/flume/tweets'");
System.out.println("Table created successfully");
String sql = "describe tweets5";
ResultSet res = stmt.executeQuery(sql);
while (res.next())
{
System.out.println(res.getString(1) + "\t" + res.getString(2));
}
sql = "select id,user.name from tweets5";
System.out.println("\nRunning: " + sql);
res = stmt.executeQuery(sql);
while (res.next()) {
System.out.println(String.valueOf(res.getString(1)) + "\t" + String.valueOf(res.getString(2)));
}
}
System.out.println("Operation done successfully.");
stmt.close();
conn.close();
System.out.println("End");
}catch(SQLException se){
se.printStackTrace();
}
catch(Exception e){
e.printStackTrace();
}
}
/*
public static void main(String[] args) throws SQLException {
Hive h = new Hive();
h.hive1();
}
*/
}
JSP代碼
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%@ page import="hive.Hive" %>
<%@ page import="java.util.*"%>
<%@ page import="java.io.*,java.util.*,java.sql.*"%>
<%@ page import="java.sql.Connection"%>
<%@ page import="java.sql.DriverManager"%>
<%@ page import="java.sql.ResultSet"%>
<%@ page import="java.sql.SQLException"%>
<%@ page import="java.sql.Statement"%>
<%@ page import="java.sql.*"%>
<%@ page import="org.apache.hive.jdbc.HiveDriver" %>
<!DOCTYPE html>
<html>
<head>
<title>page4</title>
</head>
<body>
<%
Hive h = new Hive();
h.hive1();
%>
<%= "<h1> Processing started....</h1>" %>
</body>
</html>
你嘗試使用谷歌搜索的錯誤消息？這是最常見的錯誤之一，這個問題已經回答了數百次。 –
也許您還沒有在您執行JSP的服務器上的WEB-INF \ lib目錄中部署相應的jar。 – RubioRic
檢查你的路徑是否包含驅動庫lib –