Eclipse调用Web service的困扰

正在实施的项目是一个数据中心项目，客户要求写一个通用的数据访问接口，可以兼容现有与以后的应用访问后端不同的数据库。考虑到现有的应用有java、visual basic与C++，而我们实施的应用既有java也有.net，需要访问的数据库既有DB2、Oracle也有SQL Server，所以用web service来提供数据访问。参考微软的Data Access Application Block，做了一个通用的服务，前端传送SQL语句给后端服务，服务返回执行后的XML串。使用.net客户端访问该服务，一切功能正常。但在使用java客户端访问时，却出现了问题。
我采用Eclipse平台开发java应用，找不到直接调用web service的插件，采用axis生成java包后在应用在调用。在应用中当返回的字串大小超过64K时，却出现org.xml.sax.SAXParseException，提示“分析器已达到由应用程序设置的实体扩展限制”，因为对java不是很熟悉，找了好久都找不到原因，不知各位有没有好的解决方法。
代码与提示信息如下：
1、生成java包语句：

java -classpath commons-logging.jar;log4j-1.2.8.jar;wsdl4j.jar;axis.jar;commons-discovery.jar;jaxrpc.jar;saaj.jar org.apache.axis.wsdl.WSDL2Java -p DataService http://localhost/DataService/DBService.asmx?wsdl

2、生成后的包里包含DBService.java、DBServiceLocator.java、DBServiceSoap.java与DBServiceSoapStub.java四个文件。
DBService.java的代码：

*
 * DBService.java
 *
 * This file was auto-generated from WSDL
 * by the Apache Axis WSDL2Java emitter.
 */

package DataService;

{

    // 通用数据访问服务
    public java.lang.String getDBServiceSoapAddress();

    public DataService.DBServiceSoap getDBServiceSoap() throws javax.xml.rpc.ServiceException;

    public DataService.DBServiceSoap getDBServiceSoap(java.net.URL portAddress) throws javax.xml.rpc.ServiceException;
}

DBServiceLocator.java的代码：

*
 * DBServiceLocator.java
 *
 * This file was auto-generated from WSDL
 * by the Apache Axis WSDL2Java emitter.
 */

package DataService;

{

    // 通锟斤拷锟斤拷莘锟斤拷史锟斤拷锟�

    // Use to get a proxy class for DBServiceSoap
    private final java.lang.String DBServiceSoap_address = "http://180.1.3.28/DataService/DBService.asmx";

{
        return DBServiceSoap_address;
    }

    // The WSDD service name defaults to the port name.
    private java.lang.String DBServiceSoapWSDDServiceName = "DBServiceSoap";

{
        return DBServiceSoapWSDDServiceName;
    }

{
        DBServiceSoapWSDDServiceName = name;
    }

{
       java.net.URL endpoint;
{
            endpoint = new java.net.URL(DBServiceSoap_address);
        }
{
            throw new javax.xml.rpc.ServiceException(e);
        }
        return getDBServiceSoap(endpoint);
    }

{
{
            DataService.DBServiceSoapStub _stub = new DataService.DBServiceSoapStub(portAddress, this);
            _stub.setPortName(getDBServiceSoapWSDDServiceName());
            return _stub;
        }
{
            return null;
        }
    }

*
     * For the given interface, get the stub implementation.
     * If this service has no port for the given interface,
     * then ServiceException is thrown.
     */
{
{
{
                DataService.DBServiceSoapStub _stub = new DataService.DBServiceSoapStub(new java.net.URL(DBServiceSoap_address), this);
                _stub.setPortName(getDBServiceSoapWSDDServiceName());
                return _stub;
            }
        }
{
            throw new javax.xml.rpc.ServiceException(t);
        }
        throw new javax.xml.rpc.ServiceException("There is no stub implementation for the interface:  " + (serviceEndpointInterface == null ? "null" : serviceEndpointInterface.getName()));
    }

*
     * For the given interface, get the stub implementation.
     * If this service has no port for the given interface,
     * then ServiceException is thrown.
     */
{
{
            return getPort(serviceEndpointInterface);
        }
        String inputPortName = portName.getLocalPart();
{
            return getDBServiceSoap();
        }
{
            java.rmi.Remote _stub = getPort(serviceEndpointInterface);
            ((org.apache.axis.client.Stub) _stub).setPortName(portName);
            return _stub;
        }
    }

{
        return new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "DBService");
    }

    private java.util.HashSet ports = null;

{
{
            ports = new java.util.HashSet();
            ports.add(new javax.xml.namespace.QName("DBServiceSoap"));
        }
        return ports.iterator();
    }

}

DBServiceSoap.java的代码：

*
 * DBServiceSoap.java
 *
 * This file was auto-generated from WSDL
 * by the Apache Axis WSDL2Java emitter.
 */

package DataService;

{

    // Test only
    public java.lang.String helloWorld() throws java.rmi.RemoteException;

    // 执行SQL语句或存储过程，不返回结果集
    public int executeNonQuery(java.lang.String logicalName, java.lang.String commandText, boolean isStoreProcedure, java.lang.String paraList) throws java.rmi.RemoteException;

    // 执行语句并返回结果集
    public java.lang.String executeResult(java.lang.String logicalName, java.lang.String commandText, boolean isStoreProcedure, java.lang.String paraList) throws java.rmi.RemoteException;
}

DBServiceSoapStub.java的代码：

*
 * DBServiceSoapStub.java
 *
 * This file was auto-generated from WSDL
 * by the Apache Axis WSDL2Java emitter.
 */

package DataService;

{
    private java.util.Vector cachedSerClasses = new java.util.Vector();
    private java.util.Vector cachedSerQNames = new java.util.Vector();
    private java.util.Vector cachedSerFactories = new java.util.Vector();
    private java.util.Vector cachedDeserFactories = new java.util.Vector();

    static org.apache.axis.description.OperationDesc [] _operations;

{
        _operations = new org.apache.axis.description.OperationDesc[3];
        org.apache.axis.description.OperationDesc oper;
        oper = new org.apache.axis.description.OperationDesc();
        oper.setName("HelloWorld");
        oper.setReturnType(new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "string"));
        oper.setReturnClass(java.lang.String.class);
        oper.setReturnQName(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "HelloWorldResult"));
        oper.setStyle(org.apache.axis.enum.Style.WRAPPED);
        oper.setUse(org.apache.axis.enum.Use.LITERAL);
        _operations[0] = oper;

        oper = new org.apache.axis.description.OperationDesc();
        oper.setName("ExecuteNonQuery");
        oper.addParameter(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "logicalName"), new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "string"), java.lang.String.class, org.apache.axis.description.ParameterDesc.IN, false, false);
        oper.addParameter(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "commandText"), new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "string"), java.lang.String.class, org.apache.axis.description.ParameterDesc.IN, false, false);
        oper.addParameter(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "isStoreProcedure"), new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "boolean"), boolean.class, org.apache.axis.description.ParameterDesc.IN, false, false);
        oper.addParameter(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "paraList"), new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "string"), java.lang.String.class, org.apache.axis.description.ParameterDesc.IN, false, false);
        oper.setReturnType(new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "int"));
        oper.setReturnClass(int.class);
        oper.setReturnQName(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "ExecuteNonQueryResult"));
        oper.setStyle(org.apache.axis.enum.Style.WRAPPED);
        oper.setUse(org.apache.axis.enum.Use.LITERAL);
        _operations[1] = oper;

        oper = new org.apache.axis.description.OperationDesc();
        oper.setName("ExecuteResult");
        oper.addParameter(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "logicalName"), new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "string"), java.lang.String.class, org.apache.axis.description.ParameterDesc.IN, false, false);
        oper.addParameter(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "commandText"), new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "string"), java.lang.String.class, org.apache.axis.description.ParameterDesc.IN, false, false);
        oper.addParameter(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "isStoreProcedure"), new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "boolean"), boolean.class, org.apache.axis.description.ParameterDesc.IN, false, false);
        oper.addParameter(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "paraList"), new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "string"), java.lang.String.class, org.apache.axis.description.ParameterDesc.IN, false, false);
        oper.setReturnType(new javax.xml.namespace.QName("http://www.w3.org/2001/XMLSchema", "string"));
        oper.setReturnClass(java.lang.String.class);
        oper.setReturnQName(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "ExecuteResultResult"));
        oper.setStyle(org.apache.axis.enum.Style.WRAPPED);
        oper.setUse(org.apache.axis.enum.Use.LITERAL);
        _operations[2] = oper;

    }

{
         this(null);
    }

{
         this(service);
         super.cachedEndpoint = endpointURL;
    }

{
{
            super.service = new org.apache.axis.client.Service();
{
            super.service = service;
        }
    }

{
{
            org.apache.axis.client.Call _call =
                    (org.apache.axis.client.Call) super.service.createCall();
{
                _call.setMaintainSession(super.maintainSession);
            }
{
                _call.setUsername(super.cachedUsername);
            }
{
                _call.setPassword(super.cachedPassword);
            }
{
                _call.setTargetEndpointAddress(super.cachedEndpoint);
            }
{
                _call.setTimeout(super.cachedTimeout);
            }
{
                _call.setPortName(super.cachedPortName);
            }
            java.util.Enumeration keys = super.cachedProperties.keys();
{
                java.lang.String key = (java.lang.String) keys.nextElement();
                _call.setProperty(key, super.cachedProperties.get(key));
            }
            return _call;
        }
{
            throw new org.apache.axis.AxisFault("Failure trying to get the Call object", t);
        }
    }

{
{
            throw new org.apache.axis.NoEndPointException();
        }
        org.apache.axis.client.Call _call = createCall();
        _call.setOperation(_operations[0]);
        _call.setUseSOAPAction(true);
        _call.setSOAPActionURI("http://www.gds-china.com/DataService/HelloWorld");
        _call.setEncodingStyle(null);
        _call.setProperty(org.apache.axis.client.Call.SEND_TYPE_ATTR, Boolean.FALSE);
        _call.setProperty(org.apache.axis.AxisEngine.PROP_DOMULTIREFS, Boolean.FALSE);
        _call.setSOAPVersion(org.apache.axis.soap.SOAPConstants.SOAP11_CONSTANTS);
        _call.setOperationName(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "HelloWorld"));

        setRequestHeaders(_call);
        setAttachments(_call);
);

{
            throw (java.rmi.RemoteException)_resp;
        }
{
            extractAttachments(_call);
{
                return (java.lang.String) _resp;
{
                return (java.lang.String) org.apache.axis.utils.JavaUtils.convert(_resp, java.lang.String.class);
            }
        }
    }

{
{
            throw new org.apache.axis.NoEndPointException();
        }
        org.apache.axis.client.Call _call = createCall();
        _call.setOperation(_operations[1]);
        _call.setUseSOAPAction(true);
        _call.setSOAPActionURI("http://www.gds-china.com/DataService/ExecuteNonQuery");
        _call.setEncodingStyle(null);
        _call.setProperty(org.apache.axis.client.Call.SEND_TYPE_ATTR, Boolean.FALSE);
        _call.setProperty(org.apache.axis.AxisEngine.PROP_DOMULTIREFS, Boolean.FALSE);
        _call.setSOAPVersion(org.apache.axis.soap.SOAPConstants.SOAP11_CONSTANTS);
        _call.setOperationName(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "ExecuteNonQuery"));

        setRequestHeaders(_call);
        setAttachments(_call);
);

{
            throw (java.rmi.RemoteException)_resp;
        }
{
            extractAttachments(_call);
{
                return ((java.lang.Integer) _resp).intValue();
{
                return ((java.lang.Integer) org.apache.axis.utils.JavaUtils.convert(_resp, int.class)).intValue();
            }
        }
    }

{
{
            throw new org.apache.axis.NoEndPointException();
        }
        org.apache.axis.client.Call _call = createCall();
        _call.setOperation(_operations[2]);
        _call.setUseSOAPAction(true);
        _call.setSOAPActionURI("http://www.gds-china.com/DataService/ExecuteResult");
        _call.setEncodingStyle(null);
        _call.setProperty(org.apache.axis.client.Call.SEND_TYPE_ATTR, Boolean.FALSE);
        _call.setProperty(org.apache.axis.AxisEngine.PROP_DOMULTIREFS, Boolean.FALSE);
        _call.setSOAPVersion(org.apache.axis.soap.SOAPConstants.SOAP11_CONSTANTS);
        _call.setOperationName(new javax.xml.namespace.QName("http://www.gds-china.com/DataService/", "ExecuteResult"));

        setRequestHeaders(_call);
        setAttachments(_call);
);

{
            throw (java.rmi.RemoteException)_resp;
        }
{
            extractAttachments(_call);
{
                return (java.lang.String) _resp;
{
                return (java.lang.String) org.apache.axis.utils.JavaUtils.convert(_resp, java.lang.String.class);
            }
        }
    }

}

3、下面是测试代码：

* @author Jeet
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class MyClass
{

    public static void main(String[] args)
{
        DBService myService=new DBServiceLocator();
        try
{
            String logicalName="Test";
            String commandText="Select  * from Customers";
            boolean isStoreProcedure=false;

            String para="";
            
            System.out.println(myService.getDBServiceSoap().executeResult(logicalName,commandText,isStoreProcedure,para));
//              System.out.println(myService.getDBServiceSoap().helloWorld());
        }
        catch(Exception e)
{
            e.printStackTrace();
        }
    }
}

4、当返回数据量大的时候，报下列错误：

AxisFault

 faultSubcode: 
 faultString: org.xml.sax.SAXParseException: 分析器已达到由应用程序设置的实体扩展限制"64,000"。
 faultActor: 
 faultNode: 
 faultDetail: 

    at org.apache.crimson.parser.Parser2.fatal(Parser2.java:3376)
    at org.apache.crimson.parser.Parser2.fatal(Parser2.java:3370)
    at org.apache.crimson.parser.Parser2.expandEntityInContent(Parser2.java:2704)
    at org.apache.crimson.parser.Parser2.maybeReferenceInContent(Parser2.java:2606)
    at org.apache.crimson.parser.Parser2.content(Parser2.java:2017)
    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1691)
    at org.apache.crimson.parser.Parser2.content(Parser2.java:1963)
    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1691)
    at org.apache.crimson.parser.Parser2.content(Parser2.java:1963)
    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1691)
    at org.apache.crimson.parser.Parser2.content(Parser2.java:1963)
    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1691)
    at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:667)
    at org.apache.crimson.parser.Parser2.parse(Parser2.java:337)
    at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:448)
    at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)
    at org.apache.axis.encoding.DeserializationContextImpl.parse(DeserializationContextImpl.java:242)
    at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:538)
    at org.apache.axis.Message.getSOAPEnvelope(Message.java:376)
    at org.apache.axis.client.Call.invokeEngine(Call.java:2583)
    at org.apache.axis.client.Call.invoke(Call.java:2553)
    at org.apache.axis.client.Call.invoke(Call.java:2248)
    at org.apache.axis.client.Call.invoke(Call.java:2171)
    at org.apache.axis.client.Call.invoke(Call.java:1691)
    at DataService.DBServiceSoapStub.executeResult(DBServiceSoapStub.java:187)
    at DataService.MyClass.main(MyClass.java:33)


org.xml.sax.SAXParseException: 分析器已达到由应用程序设置的实体扩展限制"64,000"。
    at org.apache.axis.AxisFault.makeFault(AxisFault.java:129)
    at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:543)
    at org.apache.axis.Message.getSOAPEnvelope(Message.java:376)
    at org.apache.axis.client.Call.invokeEngine(Call.java:2583)
    at org.apache.axis.client.Call.invoke(Call.java:2553)
    at org.apache.axis.client.Call.invoke(Call.java:2248)
    at org.apache.axis.client.Call.invoke(Call.java:2171)
    at org.apache.axis.client.Call.invoke(Call.java:1691)
    at DataService.DBServiceSoapStub.executeResult(DBServiceSoapStub.java:187)
    at DataService.MyClass.main(MyClass.java:33)
Caused by: org.xml.sax.SAXParseException: 分析器已达到由应用程序设置的实体扩展限制"64,000"。
    at org.apache.crimson.parser.Parser2.fatal(Parser2.java:3376)
    at org.apache.crimson.parser.Parser2.fatal(Parser2.java:3370)
    at org.apache.crimson.parser.Parser2.expandEntityInContent(Parser2.java:2704)
    at org.apache.crimson.parser.Parser2.maybeReferenceInContent(Parser2.java:2606)
    at org.apache.crimson.parser.Parser2.content(Parser2.java:2017)
    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1691)
    at org.apache.crimson.parser.Parser2.content(Parser2.java:1963)
    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1691)
    at org.apache.crimson.parser.Parser2.content(Parser2.java:1963)
    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1691)
    at org.apache.crimson.parser.Parser2.content(Parser2.java:1963)
    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1691)
    at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:667)
    at org.apache.crimson.parser.Parser2.parse(Parser2.java:337)
    at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:448)
    at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)
    at org.apache.axis.encoding.DeserializationContextImpl.parse(DeserializationContextImpl.java:242)
    at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:538)
     8 more