Question

我有一个Vanguard网络服务，我可以使用自定义java类调用（使用基本身份验证）。 java wsimport工具用于生成java代理存根，这一切都完美无缺。

java代码（下面的所有类都是由wsimport根据url +身份验证信息生成的）：

Authenticator.setDefault(new SimpleAuth(username,pass)); 
MyWSObject obj = new MyWSObject(url);         -> triggers the exception
ServicePortType port = obj.getServicePort();
OutputType result = port.MyWSMethod(params);
OutputData data = result.getOutputData();

当我从matlab运行完全相同的java函数（包含上面的代码）时，webservice调用失败并出现一个模糊的错误：

??? Java exception occurred:
com.sun.xml.internal.ws.streaming.XMLStreamReaderException: XML reader error: com.ctc.wstx.exc.WstxUnexpectedCharException:
Unexpected character '"' (code 34) in DOCTYPE declaration; expected a space between public and system identifiers

at [row,col,system-id]:
[1,63,"<my webservice url>"]
        at com.sun.xml.internal.ws.streaming.XMLStreamReaderUtil.wrapException(XMLStreamReaderUtil.java:256)
at com.sun.xml.internal.ws.streaming.XMLStreamReaderUtil.next(XMLStreamReaderUtil.java:84)
at com.sun.xml.internal.ws.streaming.XMLStreamReaderUtil.nextContent(XMLStreamReaderUtil.java:99)
at com.sun.xml.internal.ws.streaming.XMLStreamReaderUtil.nextElementContent(XMLStreamReaderUtil.java:89)
at com.sun.xml.internal.ws.wsdl.parser.RuntimeWSDLParser.hasWSDLDefinitions(RuntimeWSDLParser.java:209)
at com.sun.xml.internal.ws.wsdl.parser.RuntimeWSDLParser.parse(RuntimeWSDLParser.java:119)
at com.sun.xml.internal.ws.client.WSServiceDelegate.parseWSDL(WSServiceDelegate.java:254)
at com.sun.xml.internal.ws.client.WSServiceDelegate.<init>(WSServiceDelegate.java:217)
at com.sun.xml.internal.ws.client.WSServiceDelegate.<init>(WSServiceDelegate.java:165)
at com.sun.xml.internal.ws.spi.ProviderImpl.createServiceDelegate(ProviderImpl.java:93)
at javax.xml.ws.Service.<init>(Service.java:56)
at edu.soton.decode.activities.vanguardws.MyWSObject.<init>(MyWSObject.java:42)
at edu.soton.decode.activities.VanguardActivity.execute(VanguardActivity.java:80)

如果我在两种情况下都使用wireshark来监控请求/响应，我看到：

==直接调用Java函数==

下面的所有调用/响应都是由wsimport生成的JAX-WS代码自动发生的。我的代码只是在生成的服务代理上调用webservice方法，没什么特别的。

GET /bin/ws.dsb?wsdl/mywebservice HTTP/1.1
User-Agent: Java/1.6.0_22
Host: myhost
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
...

HTTP/1.1 401 Authorization Required
Server: Vanguard Server/5.1.10
Connection: close
Content-Length: 608
Date: Mon, 01 Nov 2010 15:04:17 GMT
Last-Modified: Mon, 01 Nov 2010 15:04:17 GMT
Expires: Mon, 01 Nov 2010 15:04:17 GMT
Cache-Control: no-cache
WWW-Authenticate: Basic realm="Local Library"
Auto-Studio-Login: 0
Content-Type: text/html
...

GET /bin/ws.dsb?wsdl/mywebservice HTTP/1.1
User-Agent: Java/1.6.0_22
Host: myhost
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Authorization: Basic Z29yaXNzZW46ZGlyaw==
...

HTTP/1.1 200 OK
Server: Vanguard Server/5.1.10
Connection: close
Content-Length: 5408
Date: Mon, 01 Nov 2010 15:04:17 GMT
Last-Modified: Mon, 01 Nov 2010 15:04:17 GMT
Expires: Mon, 01 Nov 2010 15:04:17 GMT
Cache-Control: no-cache
Set-Cookie: KillIDws=lpvovmb3oa9; path=/
Content-Type:text/xml
...

POST /bin/ws.dsb?soap/mywebservice HTTP/1.1
Content-type: text/xml;charset="utf-8"
Soapaction: ""
Accept: text/xml, multipart/related, text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
User-Agent: JAX-WS RI 2.1.6 in JDK 6
Host: myhost
Connection: keep-alive
Authorization: Basic Z29yaXNzZW46ZGlyaw==
Content-Length: 214
...

HTTP/1.1 200 OK
Server: Vanguard Server/5.1.10
Connection: close
Content-Length: 851
Date: Mon, 01 Nov 2010 15:04:18 GMT
Last-Modified: Mon, 01 Nov 2010 15:04:18 GMT
Expires: Mon, 01 Nov 2010 15:04:18 GMT
Cache-Control: no-cache
Set-Cookie: KillIDws=lpvovmb3oi2; path=/
Content-Type:text/xml; charset=utf-8
...

- ＆GT;最后一个回复是返回结果的地方

==从Matlab内部调用的Java函数完全相同==

GET /bin/ws.dsb?wsdl/mywebservice HTTP/1.1
Accept: */*
Accept-Encoding: gzip
Accept-Language: en
User-Agent: Mozilla/5.0 (Java 1.6.0_22; Windows XP 5.2 amd64; en_GB) ICEbrowser/v6_0_2
Host: myhost
Connection: Keep-Alive
...

HTTP/1.1 401 Authorization Required
Server: Vanguard Server/5.1.10
Connection: close
Content-Length: 608
Date: Mon, 01 Nov 2010 15:02:42 GMT
Last-Modified: Mon, 01 Nov 2010 15:02:42 GMT
Expires: Mon, 01 Nov 2010 15:02:42 GMT
Cache-Control: no-cache
WWW-Authenticate: Basic realm="Local Library"
Auto-Studio-Login: 0
Content-Type: text/html
...

- ＆GT;一切都在这里停止，例外情况如上所示。因此，当在Matlab中运行时，似乎Matlab正在对JVM环境做一些事情，阻止生成的代理进行第二次经过身份验证的调用。它只是在401之后挽救，而不是像纯java情况那样进行身份验证。

我已经设置了MATLAB_JAVA环境变量，因此在两种情况下都使用相同的JVM（sun 1.6）。我还注意到Matlab在发送请求时不尊重http.agent属性。

Answer 1

事实证明，问题似乎只发生在非Linux平台上的64位版本的Matlab上。如果我安装32位版本的Matlab，它可以正常工作。我将这个问题标记为已回答，因为这似乎是Matlab和Mathworks正在研究该问题的问题（线程编号：1-DUMQQZ）。

Answer 2

如果代理设置导致问题，则可以使用以下静态方法进行配置。

% configure
java.lang.System.getProperties().put('http.proxyHost', 'your.proxy');
java.lang.System.getProperties().put('http.proxyPort', 'port number');
java.lang.System.getProperties().put('http.proxyUser', 'name');
java.lang.System.getProperties().put('http.proxyPassword', 'password');

java.lang.System.getProperties().put('http.proxySet', 'true');

% verify
java.lang.System.getProperty('http.proxyHost')
java.lang.System.getProperty('http.proxyPort')
java.lang.System.getProperty('http.proxyUser')
java.lang.System.getProperty('http.proxyPassword')

% test
urlread('http://www.yahoo.com/')

Answer 3

ICEbrowser，MATLAB仍在某些平台上用于HTML渲染，它将自己的一些类插入到全局VM设置中。如果您从未在当前会话中打开帮助浏览器，这可能对您有用。

从Matlab内部调用JAX-WS Web服务

3 个答案: