dom 解析器中的 java.lang.StackOverflowError

Question

以下是我的应用程序中的许多线程将访问的方法。

public static String getXMLAsString(org.dom4j.Document dom4jDocument)
    {

        String strXML="";
        try {
            strXML = dom4jDocument.asXML();             

            }
            catch(Exception e){
            e.printStackTrace();
            System.out.println("XMLUtility : General Exception :- "+e.getMessage());
        }       

        return strXML;
    }

成功执行某个线程后，会出现以下错误。

java.lang.StackOverflowError
    at java.lang.String.indexOf(String.java:1352)
    at org.apache.xerces.dom.ElementNSImpl.getPrefix(Unknown Source)
    at org.dom4j.io.DOMReader.readElement(DOMReader.java:169)
    .........................................................
    .........................................................

以下是成功执行线程的上定义方法的结果

<?xml version="1.0" encoding="UTF-8"?>
<action_script>
<command>SUSPEND^
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:spi="http://nsn.com/npm/SoapProvisioningInterface/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <soapenv:Header/>
    <soapenv:Body>
        <spi:updateService>
            <spi:request>
                <spi:service>
                    <spi:serviceIdentifier>
                        <spi:serviceCode>CFS_Residential_v1</spi:serviceCode>
                    </spi:serviceIdentifier>
                    <spi:attributes>
                    <spi:attribute spi:name="CallingSystem" xsi:type="spi:singlevalue">
                            <spi:value xsi:type="xsd:string">OCS</spi:value>
                        </spi:attribute>
                        <spi:attribute spi:name="MSISDN" xsi:type="spi:singlevalue">
                            <spi:value xsi:type="xsd:string">{MSISDN}</spi:value>
                        </spi:attribute>
                        <spi:attribute spi:name="HSSUserAdminBlock" xsi:type="spi:singlevalue">
                            <spi:value xsi:type="xsd:boolean">true</spi:value>
                        </spi:attribute>
                        <spi:attribute spi:name="IMSPrivateID" xsi:type="spi:singlevalue">
                        <spi:value xsi:type="xsd:string">{username}</spi:value>
                      </spi:attribute>
                        </spi:attributes>
                </spi:service>
            </spi:request>
        </spi:updateService>
    </soapenv:Body>
</soapenv:Envelope>
</command>
<success_message>//ns1:updateServiceResponse</success_message>
<command>DEACTIVATE^
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:spi="http://nsn.com/npm/SoapProvisioningInterface/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <soapenv:Header/>
    <soapenv:Body>
        <spi:updateService>
            <spi:request>
                <spi:service>
                    <spi:serviceIdentifier>
                        <spi:serviceCode>CFS_Residential_v1</spi:serviceCode>
                    </spi:serviceIdentifier>
                    <spi:attributes>
                    <spi:attribute spi:name="CallingSystem" xsi:type="spi:singlevalue">
                            <spi:value xsi:type="xsd:string">OCS</spi:value>
                        </spi:attribute>
                        <spi:attribute spi:name="MSISDN" xsi:type="spi:singlevalue">
                            <spi:value xsi:type="xsd:string">{MSISDN}</spi:value>
                        </spi:attribute>
                        <spi:attribute spi:name="HSSUserAdminBlock" xsi:type="spi:singlevalue">
                            <spi:value xsi:type="xsd:boolean">true</spi:value>
                        </spi:attribute>
                        <spi:attribute spi:name="IMSPrivateID" xsi:type="spi:singlevalue">
                        <spi:value xsi:type="xsd:string">{username}</spi:value>
                      </spi:attribute>
                        </spi:attributes>
                </spi:service>
            </spi:request>
        </spi:updateService>
    </soapenv:Body>
</soapenv:Envelope>
</command>
<success_message>//ns1:updateServiceResponse</success_message>
<command>ACTIVATE^
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:spi="http://nsn.com/npm/SoapProvisioningInterface/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <soapenv:Header/>
    <soapenv:Body>
        <spi:updateService>
            <spi:request>
                <spi:service>
                    <spi:serviceIdentifier>
                        <spi:serviceCode>CFS_Residential_v1</spi:serviceCode>
                    </spi:serviceIdentifier>
                    <spi:attributes>
                    <spi:attribute spi:name="CallingSystem" xsi:type="spi:singlevalue">
                            <spi:value xsi:type="xsd:string">OCS</spi:value>
                        </spi:attribute>
                        <spi:attribute spi:name="MSISDN" xsi:type="spi:singlevalue">
                            <spi:value xsi:type="xsd:string">{MSISDN}</spi:value>
                        </spi:attribute>
                        <spi:attribute spi:name="HSSUserAdminBlock" xsi:type="spi:singlevalue">
                            <spi:value xsi:type="xsd:boolean">false</spi:value>
                        </spi:attribute>
                        <spi:attribute spi:name="IMSPrivateID" xsi:type="spi:singlevalue">
                        <spi:value xsi:type="xsd:string">{username}</spi:value>
                      </spi:attribute>
                        </spi:attributes>
                </spi:service>
            </spi:request>
        </spi:updateService>
    </soapenv:Body>
</soapenv:Envelope>
</command>
<success_message>//ns1:updateServiceResponse</success_message>
</action_script>

Answer 1

可能只是因为您的 XML 文档太大，以至于尝试将其全部放入一个字符串中会导致大量的链式方法调用，并且您的堆栈内存已满。尝试通过以下方式分配更多堆栈内存：

-Xss10m

JVM 参数

（如果从 Eclipse 执行：右键单击项目 -> 运行方式... -> 运行配置 -> 参数选项卡 -> VM 参数 -> -Xss1m）