thank you Chris Hostetter,I'm fresher in j2ee develop;I write a servlet
test;it show
package org.apache.solr.servlet;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import org.apache.solr.tst.TestRequestHandler;
import org.apache.solr.schema.*;
import org.apache.solr.analysis.*;
public class ServletClassFrom extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GB18030";
//Initialize global variables
public void init() throws ServletException {
}
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse
response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head><title>ServletClassFrom</title></head>");
out.println("<body bgcolor=\"#ffffff\">");
out.println("<p>The servlet has received a GET. This is the
reply.</p>");
myFromName("org.apache.solr.request.StandardRequestHandler",out);
myFromName("org.apache.solr.tst.OldRequestHandler",out);
myFromName("org.apache.solr.tst.TestRequestHandler",out);
myFromName("org.apache.solr.schema.IntField",out);
out.println("</body>");
out.println("</html>");
out.close();
}
//Clean up resources
public void destroy() {
}
private void myFromName(String classname,PrintWriter out){
try{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
//Thread.currentThread().setContextClassLoader();
//out.println("ClassLoader:"+loader.toString()+"<br>");
Class cls = loader.loadClass(classname);
// Class cls = Class.forName(classname, true, loader);
if(cls!=null){out.println("cls"+cls.toString()+"<br>");}
out.println("<hr>");
} catch (ClassNotFoundException ex) {
out.println("Exception:"+ex.getMessage()+"<br>");
//ex.printStackTrace(out);
out.println(ex.toString());
out.println("<hr>");
}
}
}
---------------------------------------------------------
result page:
The servlet has received a GET. This is the reply.
clsclass org.apache.solr.request.StandardRequestHandler
clsclass org.apache.solr.tst.OldRequestHandler
clsclass org.apache.solr.tst.TestRequestHandler
clsclass org.apache.solr.schema.IntField
Exception:org.apache.solr.analysis.StandardFilterFactoryjava.lang.ClassNotFoundException:
org.apache.solr.analysis.StandardFilterFactory
--------------------------------------------------------------------------------------------------
Why some class can be load others can not ?
when I debug solr/admin/index.jsp the infos:
信息: Initializing Coyote HTTP/1.1 on http-8080
2006-5-22 10:40:28 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 1078 ms
2006-5-22 10:40:28 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2006-5-22 10:40:28 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/5.0.28
2006-5-22 10:40:28 org.apache.catalina.core.StandardHost start
信息: XML validation disabled
2006-5-22 10:40:29 org.apache.catalina.loader.WebappClassLoader
validateJarFile
信息:
validateJarFile(E:\app.java\OpenSource_Apache\jakarta-tomcat-5.0.28\webapps\Solr\WebModule1\WEB-INF\lib\servlet-api-2.4.jar)
- jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class:
javax/servlet/Servlet.class
2006-5-22 10:40:29 org.apache.catalina.core.StandardHost getDeployer
信息: Create Host deployer for direct deployment ( non-jmx )
2006-5-22 10:40:30 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-8080
2006-5-22 10:40:30 org.apache.catalina.startup.Catalina start
信息: Server startup in 1266 ms
2006-5-22 10:40:31 org.apache.solr.core.SolrConfig initConfig
信息: Loaded SolrConfig: solrconfig.xml
2006-5-22 10:40:32 org.apache.solr.core.RequestHandlers <init>
信息: adding requestHandler standard=solr.StandardRequestHandler
2006-5-22 10:40:32 org.apache.solr.request.StandardRequestHandler init
信息: Unused request handler arguments:{}
2006-5-22 10:40:32 org.apache.solr.core.SolrCore <init>
信息: Opening new SolrCore at solr/, dataDir=solr/data
2006-5-22 10:40:32 org.apache.solr.schema.IndexSchema readConfig
信息: Reading Solr Schema
2006-5-22 10:40:32 org.apache.solr.schema.IndexSchema readConfig
信息: Schema name=example
StandardWrapperValve[debugjsp]: Servlet.service() for servlet debugjsp threw
exception
org.apache.solr.core.SolrException: Error loading class
'solr.StandardFilterFactory'
org.apache.solr.core.SolrException: Error loading class
'solr.StandardFilterFactory'
--
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