Web应用出错时通常抛出403,404,500等异常，JBoss中部署的web应用如果没有考虑错误页面的处理，出错时错误页面如下所示：
如上在出错页面上包括两部分信息：
我们分三步：
第一：重写JBossWeb的org.apache.catalina.valves.ErrorReportValve，如下为一个例子：
package org.jboss.web.values;
import java.io.IOException;
import java.io.Writer;
import org.apache.catalina.connector.Request;
import org.apache.catalina.connector.Response;
import org.apache.catalina.valves.ErrorReportValve;
import org.apache.catalina.util.RequestUtil;
public class CustomErrorReportValve extends ErrorReportValve {
protected void report(Request request, Response response, Throwable throwable) {
int statusCode = response.getStatus();
if ((statusCode < 400) || (response.getContentCount() > 0)) {
return;
}
String message = RequestUtil.filter(response.getMessage());
if (message == null) {
message = "";
}
StringBuffer sb = new StringBuffer();
sb.append("<html><head><title>");
sb.append(sm.getString("errorReportValve.statusHeader", "" + statusCode, message));
sb.append("</title>");
sb.append("<style><!--");
sb.append(org.apache.catalina.util.TomcatCSS.TOMCAT_CSS);
sb.append("--></style> ");
sb.append("</head><body>");
sb.append("<h1>");
sb.append(sm.getString("errorReportValve.statusHeader", "" + statusCode, message));
sb.append("</h1>");
sb.append("</body></html>");
try {
try {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
} catch (Throwable t) {
if (container.getLogger().isDebugEnabled())
container.getLogger().debug("status.setContentType", t);
}
Writer writer = response.getReporter();
if (writer != null) {
// If writer is null, it‘s an indication that the response has
// been hard committed already, which should never happen
writer.write(sb.toString());
}
} catch (IOException e) {
;
} catch (IllegalStateException e) {
;
}
}
}
第三：配置JBoss
JBoss 7/WildFly 8配置如下
1. 将CustomErrorReportValve.jar 放置到您应用WEB-INF/lib目录
2.创建WEB-INF/jboss-web.xml，添加
<jboss-web>
<valve>
<class-name>com.redhat.jboss.support.CustomErrorReportValve</class-name>
</valve>
</jboss-web>1。将CustomErrorReportValve.jar 放置到 $JBOSS_HOME/server/$PROFILE/lib
2. 编辑$JBOSS_HOME/server/$PROFILE/deploy/jboss-web.deployer/server.xml中添加Host元素，errorReportValveClass属性指向重写的ErrorReportValve如下：
<Host name="localhost" errorReportValveClass="org.jboss.web.values.CustomErrorReportValve" >
隐藏后效果隐藏后效果如下图所示：
JBoss 系列八十八： JBoss 中如何隐藏 web 应用出错时页面上显示的 JBoss 信息
原文：http://blog.csdn.net/kylinsoong/article/details/18323675
