简单的nusoap请求返回java.lang.nullPointerException

Question

我正在尝试使用JAX-WS发布的Web Service，这是我之前从未做过的，因此请耐心等待。 在我的本地环境中执行nusoap调用时，它将提供所有请求的数据。 但是，一旦将Java应用程序部署到我的Dev环境中，它就会从服务器端返回空指针异常。

以下是我的代码片段（很高兴为您提供您可能需要的更多信息，因为我以前从未使用过JAX WS）。 提前致谢！！！

XML文件，发布在下面的示例网址中（相关部分）

http://services.myapp.dev.com:8080/myapp-1.0-SNAPSHOT/MyService?wsdl

/ *内容* /

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<!--
 Published by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.2.7-b01  svn-revision#${svn.Last.Changed.Rev}. 
-->
<!--
 Generated by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.2.7-b01  svn-revision#${svn.Last.Changed.Rev}. 
-->
<definitions xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:wsp="http://www.w3.org/ns/ws-policy" xmlns:wsp1_2="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:wsam="http://www.w3.org/2007/05/addressing/metadata" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://service.myapp.com/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://service.myapp.com/" name="MyServiceService">
<types>
<xsd:schema>
<xsd:import namespace="http://service.myapp.com/" schemaLocation="http://services.myapp.com:8080/myapp-1.0-SNAPSHOT/MyService?xsd=1"/>
</xsd:schema>
</types>
<message name="SearchDailyRecords">
<part name="parameters" element="tns:SearchDailyRecords"/>
</message>
<message name="SearchDailyRecordsResponse">
<part name="parameters" element="tns:SearchDailyRecordsResponse"/>
</message>
<portType name="MyService">
<operation name="SearchDailyRecords">
<input wsam:Action="http://services.myapp.com:8080/myapp-1.0-SNAPSHOT/MyService/SearchDailyRecordsRequest" message="tns:SearchDailyRecords"/>
<output wsam:Action="http://services.myapp.com:8080/myapp-1.0-SNAPSHOT/MyService/SearchDailyRecordsResponse" message="tns:SearchDailyRecordsResponse"/>
<fault message="tns:Exception" name="Exception" wsam:Action="http://services.myapp.com:8080/myapp-1.0-SNAPSHOT/MyService/SearchDailyRecords/Fault/Exception"/>
</operation>
</portType>
<binding name="MyServicePortBinding" type="tns:MyService">
<soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/>
<operation name="SearchDailyRecords">
<soap:operation soapAction=""/>
<input>
<soap:body use="literal"/>
</input>
<output>
<soap:body use="literal"/>
</output>
<fault name="Exception">
<soap:fault name="Exception" use="literal"/>
</fault>
</operation>
</binding>
<service name="MyServiceService">
<port name="MyServicePort" binding="tns:MyServicePortBinding">
<soap:address location="http://services.myapp.com:8080/myapp-1.0-SNAPSHOT/MyService"/>
</port>
</service>
</definitions>

Java后端服务：

 @Override
    public @WebResult(name = "response")
    List<SearchDailyRecordsResponse> SearchDailyRecords(@WebParam(name = "employeeId") @XmlElement(required = true) String employeeId, @WebParam(name = "date") @XmlElement(required = true) String date) throws Exception {                   

        SearchDailyRecordsRequest request = new SearchDailyRecordsRequest();
        request.employeeId = employeeId;        
        request.date = date;

        try {

            IDailyRecordDAO dailyRecordDAO = (IDailyRecordDAO) DAOFactory.getInstance().getDAO("DailyRecord");

            List<DailyRecord> dailyRecords = registroGenericoDAO.get(request.employeeId, request.date);
            List<SearchDailyRecordsResponse> response = new ArrayList<SearchDailyRecordsResponse>();

            SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");        

            for (DailyRecord dailyRecord : dailyRecords) {
                SearchDailyRecordsResponse searchDailyRecords = new SearchDailyRecordsResponse();
                searchDailyRecords.recordId = dailyRecord.getRecord().getId();                   
                /* some other info populating record */ 

                response.add(searchDailyRecords);
            }
            return response;
        } catch (Exception e) {
                Logger.getLogger(MyService.class.getName()).log(Level.WARNING, null, e);
                throw new Exception("Error getting daily records");
        }
    }
}

PHP测试脚本

<?php

require_once('../backend/libraries/nusoap/nusoap.php');

$url = "http://services.myapp.com:8080/myapp-1.0-SNAPSHOT/MyService?wsdl";

ini_set("soap.wsdl_cache_enabled", "0");

$client = new nusoap_client($url, 'wsdl');

try {
    echo 'try: ';

    /* date("d/m/Y") --> DATE FORMAT */

    $date = '06/05/2016';  

    $request = array(
        'employeeId' => 1234,
        'date' => $date
    );    


    $response = $client->call('SearchDailyRecords', array('request' => $request));    
    //die('<pre>'.print_r($client, true).'</pre>');


    if ($client->fault) {
    echo 'fault?: ';
        echo "<h2>Fault</h2><pre>";
        print_r($response);
        echo "</pre>";
    } else {
        $error = $client->getError();
        if ($error) {
            echo "<h2>Error</h2><pre>" . $error . "</pre>";
        } else {
            echo "<h2>Main</h2>";
            echo $response;
        }
    }

    // show soap request and response
    echo "<h2>Request</h2>";
    echo "<pre>" . htmlspecialchars(formatXmlString($client->request), ENT_QUOTES) . "</pre>";
    echo "<h2>Response</h2>";
    echo "<pre>" . htmlspecialchars(formatXmlString($client->response), ENT_QUOTES) . "</pre>";

    /******************************************/
} catch (SoapFault $exc) {
    die('<pre>' . print_r($exc, true) . '</pre>');
}

function formatXmlString($xml){
    $xml = preg_replace('/(>)(<)(\/*)/', "$1\n$2$3", $xml);
    $token      = strtok($xml, "\n");
    $result     = '';
    $pad        = 0; 
    $matches    = array();
    while ($token !== false) : 
        if (preg_match('/.+<\/\w[^>]*>$/', $token, $matches)) : 
          $indent=0;
        elseif (preg_match('/^<\/\w/', $token, $matches)) :
          $pad--;
          $indent = 0;
        elseif (preg_match('/^<\w[^>]*[^\/]>.*$/', $token, $matches)) :
          $indent=1;
        else :
          $indent = 0; 
        endif;
        $line    = str_pad($token, strlen($token)+$pad, ' ', STR_PAD_LEFT);
        $result .= $line . "\n";
        $token   = strtok("\n");
        $pad    += $indent;
    endwhile; 
    return $result;
}

?> 

Answer 1

经过研究后，我发现了问题所在以及解决方法，因此，在此发布我的工作，以防其他人遇到类似问题：

在请求将Tomcat服务器日志部署到Development之后，我发现了以下异常：

SEVERE: null
com.myappconfiguration.ConfigurationException: La variable DailyRecord no existe!
    at com.myapp.Configuration.getEnvironmentVariable(Configuration.java:17)
    at com.myapp.dao.DAOFactory.LoadDaoFromFile(DAOFactory.java:57)
    at com.myapp.dao.DAOFactory.getDAO(DAOFactory.java:42)
    at com.myapp.service.MyAppService.SeachDailyRecords(MyAppService.java:515)
    at sun.reflect.GeneratedMethodAccessor322.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.sun.xml.ws.api.server.InstanceResolver$1.invoke(InstanceResolver.java:250)
    at com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:149)
    at com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest(SEIInvokerTube.java:88)
    at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:1063)
    at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:979)
    at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:950)
    at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:825)
    at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:380)
    at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:651)
    at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:264)
    at com.sun.xml.ws.transport.http.servlet.ServletAdapter.invokeAsync(ServletAdapter.java:218)
    at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doGet(WSServletDelegate.java:159)
    at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doPost(WSServletDelegate.java:194)
    at com.sun.xml.ws.transport.http.servlet.WSServlet.doPost(WSServlet.java:80)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Caused by: javax.naming.NameNotFoundException: Name [DailyRecord] is not bound in this Context. Unable to find [DailyRecord].
    at org.apache.naming.NamingContext.lookup(NamingContext.java:820)
    at org.apache.naming.NamingContext.lookup(NamingContext.java:168)
    at com.myappconfiguration.Configuration.getEnvironmentVariable(Configuration.java:14)

所以我想出了一个新的类，并且没有加载DAO，这是通过将条目添加到我的context.xml文件（位于META-INF文件夹中）来解决的

<Environment name="DailyRecord" override="false" type="java.lang.String" value="com.myapp.dao.oracle.DailyRecordDAO"/>

之后，我重新构建了该应用程序，并部署了新生成的.war文件，没有出现问题。