使用httpclient连接tomcat管理页有关问题，遇到过的请帮忙作答，多谢

2012-03-18

使用httpclient连接tomcat管理页问题，遇到过的请帮忙作答，谢谢！用httpclient模拟实现用浏览器访问tomcat的

使用httpclient连接tomcat管理页问题，遇到过的请帮忙作答，谢谢！
用httpclient模拟实现用浏览器访问tomcat的管理页面，好像需要经过 HTTP Basic 认证。参考了http://www.ibm.com/developerworks/cn/java/j-lo-httpclient-j2ee/#N10060。但老是连接不成功。不是何原因？
代码如下：

Java code

import java.io.IOException;import org.apache.commons.httpclient.*;import org.apache.commons.httpclient.auth.AuthScope;import org.apache.commons.httpclient.methods.GetMethod;import org.apache.commons.httpclient.params.HttpMethodParams;import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.UsernamePasswordCredentials; public class GetSample {    public static void main(String[] args) {        //构造HttpClient的实例        HttpClient httpClient = new HttpClient();                httpClient.getState().setCredentials( new AuthScope("http://10.75.72.229", 8080, null), new UsernamePasswordCredentials("admin", "admin"));//10.75.72.229不是本机        //httpClient.getState().setCredentials( null ,"http://10.75.72.229:8080/manager/status" , new UsernamePasswordCredentials( "admin" , "admin" ) );        httpClient.getParams().setAuthenticationPreemptive(true);        //创建GET方法的实例        GetMethod getMethod = new GetMethod("http://10.75.72.229:8080/manager/status?XML=true");        getMethod.setDoAuthentication( true );        //使用系统提供的默认的恢复策略        getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler());        try {            //执行getMethod            int statusCode = httpClient.executeMethod(getMethod);            if (statusCode != HttpStatus.SC_OK) {                System.err.println("Method failed: " + getMethod.getStatusLine());            }            //读取内容             byte[] responseBody = getMethod.getResponseBody();            //处理内容            System.out.println(new String(responseBody));        }        catch (HttpException e) {            //发生致命的异常，可能是协议不对或者返回的内容有问题            System.out.println("Please check your provided http address!");            e.printStackTrace();        }        catch (IOException e) {            //发生网络异常            e.printStackTrace();        }        finally {            //释放连接            getMethod.releaseConnection();        }    }}

报错如下
2008-7-1 9:49:31 org.apache.commons.httpclient.HttpMethodDirector authenticateHost
警告: Required credentials not available for BASIC <any realm>@10.75.72.229:8080
2008-7-1 9:49:31 org.apache.commons.httpclient.HttpMethodDirector authenticateHost
警告: Preemptive authentication requested but no default credentials available
2008-7-1 9:49:31 org.apache.commons.httpclient.auth.AuthChallengeProcessor selectAuthScheme
信息: basic authentication scheme selected
2008-7-1 9:49:31 org.apache.commons.httpclient.HttpMethodDirector processWWWAuthChallenge
信息: Failure authenticating with BASIC 'Tomcat Manager Application'@10.75.72.229:8080
Method failed: HTTP/1.1 401
2008-7-1 9:49:31 org.apache.commons.httpclient.HttpMethodBase getResponseBody
警告: Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.
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<html>
<head>
<title>401 Unauthorized</title>
<style>

</style>
</head>
<body>
<h1>401 Unauthorized</h1>
<p>
You are not authorized to view this page. If you have not changed
any configuration files, please examine the file
<tt>conf/tomcat-users.xml</tt> in your installation. That
file will contain the credentials to let you use this webapp.
</p>
<p>
You will need to add <tt>manager</tt> role to the config file listed above.
For example:
<pre>
<role rolename="manager"/>
<user username="tomcat" password="s3cret" roles="manager"/>
</pre>
</p>
<p>
For more information - please see the
<a href="/docs/manager-howto.html">Manager App HOW-TO</a>.
</p>
</body>

</html>

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使用httpclient连接tomcat管理页有关问题，遇到过的请帮忙作答，多谢