.warファイルをデプロイした後、Glassfishのデータベースに接続できない

Question

大学でJava-EEを初めて使用していて、Netbeans IDEのデータベース接続で正常に動作するプロジェクトを試した後で、とても新しいです。私は* .warファイルをNetbeans IDE（admin start-domain domain1としてコマンドを起動し、* .warファイルがアプリケーションリストにあるサーバー）を開くことなく、ローカルホストサーバーに展開しようとしました。 localhost：8080でプロジェクトを開始すると、データベース接続は失敗し、私のweb-appは動作しません。

誰もそれを解決する方法はありますか？ Exception picture

サーバログ：

[2016-04-11T16:24:50.888+0800] [Payara 4.1] [SEVERE] [] [] [tid: _ThreadID=40 _ThreadName=admin-listener(3)] [timeMillis: 1460363090888] [levelValue: 1000] [[ 
    Mon Apr 11 16:24:50 SGT 2016 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.]] 

[2016-04-11T16:36:55.713+0800] [Payara 4.1] [SEVERE] [] [] [tid: _ThreadID=40 _ThreadName=admin-listener(3)] [timeMillis: 1460363815713] [levelValue: 1000] [[ 
    Mon Apr 11 16:36:55 SGT 2016 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.]] 

[2016-04-11T16:50:35.840+0800] [Payara 4.1] [INFO] [] [javax.enterprise.resource.resourceadapter.com.sun.enterprise.connectors] [tid: _ThreadID=27 _ThreadName=http-listener-1(5)] [timeMillis: 1460364635840] [levelValue: 800] [[ 
    RAR7099: The mcf being used to allocate the connection and the MCF in the pool are not equal.]] 

[2016-04-11T16:50:35.844+0800] [Payara 4.1] [WARNING] [] [javax.enterprise.resource.resourceadapter.com.sun.enterprise.resource.allocator] [tid: _ThreadID=27 _ThreadName=http-listener-1(5)] [timeMillis: 1460364635844] [levelValue: 900] [[ 
    RAR5038:Unexpected exception while creating resource for pool foodPool. Exception : javax.resource.spi.SecurityException: No password credential found]] 

[2016-04-11T16:50:35.845+0800] [Payara 4.1] [WARNING] [] [javax.enterprise.resource.resourceadapter.com.sun.enterprise.connectors] [tid: _ThreadID=27 _ThreadName=http-listener-1(5)] [timeMillis: 1460364635845] [levelValue: 900] [[ 
    RAR5117 : Failed to obtain/create connection from connection pool [ foodPool ]. Reason : com.sun.appserv.connectors.internal.api.PoolingException: No password credential found]] 

[2016-04-11T16:50:35.846+0800] [Payara 4.1] [WARNING] [] [javax.enterprise.resource.resourceadapter.com.sun.gjc.spi] [tid: _ThreadID=27 _ThreadName=http-listener-1(5)] [timeMillis: 1460364635846] [levelValue: 900] [[ 
    RAR5114 : Error allocating connection : [No password credential found]]] 

[2016-04-11T16:50:35.848+0800] [Payara 4.1] [INFO] [] [] [tid: _ThreadID=27 _ThreadName=http-listener-1(5)] [timeMillis: 1460364635848] [levelValue: 800] [[ 
    No password credential found]] 

[2016-04-11T16:50:35.849+0800] [Payara 4.1] [WARNING] [] [javax.enterprise.web] [tid: _ThreadID=27 _ThreadName=http-listener-1(5)] [timeMillis: 1460364635849] [levelValue: 900] [[ 
    StandardWrapperValve[login]: Servlet.service() for servlet login threw exception 
java.lang.NullPointerException 
    at servlet.login.doPost(login.java:146) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) 
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167) 
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206) 
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180) 
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235) 
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111) 
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536) 
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571) 
    at java.lang.Thread.run(Unknown Source) 
]] 

接続サーブレット：

package object; 

import java.sql.Connection; 
import java.sql.ResultSet; 
import java.sql.Statement; 
import javax.naming.InitialContext; 
import javax.naming.NamingException; 
import javax.sql.DataSource; 

/* 
* To change this license header, choose License Headers in Project Properties. 
* To change this template file, choose Tools | Templates 
* and open the template in the editor. 
*/ 

/** 
* 
* @author Richard 
*/ 
public class connection { 

    private InitialContext ctx; 

    public InitialContext getCtx() { 
     return ctx; 
    } 

    public void setCtx(InitialContext ctx) { 
     this.ctx = ctx; 
    } 

    public DataSource getDs() { 
     return ds; 
    } 

    public void setDs(DataSource ds) { 
     this.ds = ds; 
    } 

    public Connection getConn() { 
     return conn; 
    } 

    public void setConn(Connection conn) { 
     this.conn = conn; 
    } 

    public Statement getStmt() { 
     return stmt; 
    } 

    public void setStmt(Statement stmt) { 
     this.stmt = stmt; 
    } 

    public ResultSet getRs() { 
     return rs; 
    } 

    public void setRs(ResultSet rs) { 
     this.rs = rs; 
    } 
    private DataSource ds; 
    private Connection conn; 
    private Statement stmt; 
    private ResultSet rs; 

    public connection(){ 

     try{ 

      ctx = new InitialContext(); 
      ds = (DataSource)ctx.lookup("jdbc/fastfood"); 

     }catch(NamingException ex) 
     { 


     } 
    } 

public DataSource getDataSource(){ 
    return ds; 
} 
} 

Answer 1

以下のようにルックアップ構文を変更してみてください：

ds = (DataSource)ctx.lookup("java:jdbc/fastfood"); 

Answer 2

のJava EEであなたがルックアップするべきではありません手動で接続しますが、データソースを使用してください（https://docs.oracle.com/javase/8/docs/api/index.html?javax/sql/DataSource.html）を設定します。

次に、https://docs.oracle.com/javaee/6/tutorial/doc/bncjk.htmlの説明に従って、コンポーネントにデータソースを注入することができます。 代わりに、JNDIルックアップを使用してデータソースを取得することもできます。

あなたの接続がpersistence.xmlでそのJNDI名を与えることによって取得されるだろうし、あなたが唯一の@PersistenceContext注釈（https://docs.oracle.com/javaee/7/api/javax/persistence/PersistenceContext.html）