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tomcat ��止列出目录

Tue, 07 Aug 2007 05:58:00 GMT

在Tomcat的conf/web.xml文�g里把listings值改为false
�?

    <servlet>
        <servlet-name>defaultservlet-name>
        <servlet-class>org.apache.catalina.servlets.DefaultServletservlet-class>
        <init-param>
            <param-name>debugparam-name>
            <param-value>0param-value>
        init-param>
        <init-param>
            <param-name>listingsparam-name>
            <param-value>falseparam-value>
        init-param>
        <load-on-startup>1load-on-startup>
    servlet>

��浪�?/a> 2007-08-07 13:58 发表评论

get 方式中文问题

Tue, 17 Jul 2007 12:37:00 GMT

在Tomcat根式目录�?conf/server.xml文�g中，�?lt;Connector port="8080" />�Q�在里面加uRIEncoding="gbk"

�?br>

��浪�?/a> 2007-07-17 20:37 发表评论

不��用server.xml配置JNDI on Tomcat 5.5.X

Fri, 20 Apr 2007 14:24:00 GMT

今天试用了JSP�I�间,

�E�序与提供商有一些矛盾，提供商允许我们改server.xml

那问题就来，我用了JNDI

�q�早��意识到�Q�就把JNDI抽取到conf/Catalina/localhost目录

如test.xml

xml version="1.0" encoding="UTF-8"?>
<Context path="/test" reloadable="true" docBase="D:\web\test" workDir="D:\web\test\WEB-INF\work">
  <Resource
    name="jdbc/TEST"
    type="javax.sql.DataSource"
    password=""
    driverClassName="com.mysql.jdbc.Driver"
    maxIdle="2"
    maxWait="5000"
    username="root"
    url="jdbc:mysql://localhost:3306/test"
    maxActive="4"/>
Context>

�q�还是麻烦，最后技术�h员徏议在META-INF/目录下放context.xml

xml version="1.0" encoding="UTF-8"?>
<Context>
  <Resource
    name="jdbc/TEST"
    type="javax.sql.DataSource"
    password=""
    driverClassName="com.mysql.jdbc.Driver"
    maxIdle="2"
    maxWait="5000"
    username="root"
    url="jdbc:mysql://localhost:3306/test"
    maxActive="4"/>
Context>

��浪�?/a> 2007-04-20 22:24 发表评论

tomcat5下jsp出现getOutputStream() has already been called for this response异常的原因和解决�Ҏ��

Mon, 19 Mar 2007 04:57:00 GMT

【标题】：tomcat5下jsp出现getOutputStream() has already been called for this response异常的原因和解决�Ҏ��
【关键字】：tomcat5,jsp,getOutputStream,has,already,been,called,for,this,response
【来源】：http://blog.csdn.net/alexwan/archive/2007/02/13/1508871.aspx

tomcat5下jsp出现getOutputStream() has already been called for this response异常的原因和解决�Ҏ��

在tomcat5下jsp中出现此错误一般都是在jsp中��用了输出��（如输出图片验证码�Q�文件下载等�Q�，
没有妥善处理好的原因�?br>
具体的原因就�?br>在tomcat中jsp�~�译成servlet之后在函数_jspService(HttpServletRequest request, HttpServletResponse response)的最�?br>有一�D�这��L��代码
finally {
if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
}
�q�里是在释放在jsp中��用的对象�Q�会调用response.getWriter(),因�ؓ�q�个�Ҏ��是和
response.getOutputStream()相冲�H�的�Q�所以会出现以上�q�个异常�?/p>

然后当然是要提出解决的办法，其实挺简单的�Q��ƈ不是和某些朋友说的那�?-
��jsp内的所有空格和回�R�W�号所有都删除掉）�Q?/p>

在��用完输出��以后调用以下两行代码即可：
out.clear();
out = pageContext.pushBody();

最后这里是一个输出彩色验证码例子�Q�这��L��例子几乎随处可见�Q?br>imag.jsp

<% @ page import = " java.awt.*,java.awt.image.*,java.util.*,javax.imageio.* " %>
<% @ page import = " java.io.OutputStream " %>
<%!
Color getRandColor( int fc, int bc){
Random random = new Random();
if (fc > 255 ) fc = 255 ;
if (bc > 255 ) bc = 255 ;
int r = fc + random.nextInt(bc - fc);
int g = fc + random.nextInt(bc - fc);
int b = fc + random.nextInt(bc - fc);
return new Color(r,g,b);
}
%>
<%
try {
response.setHeader( " Pragma " , " No-cache " );
response.setHeader( " Cache-Control " , " no-cache " );
response.setDateHeader( " Expires " , 0 );
int width = 60 , height = 20 ;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
OutputStream os = response.getOutputStream();
Graphics g = image.getGraphics();
Random random = new Random();
g.setColor(getRandColor( 200 , 250 ));
g.fillRect( 0 , 0 , width, height);

g.setFont( new Font( " Times New Roman " ,Font.PLAIN, 18 ));
g.setColor(getRandColor( 160 , 200 ));
for ( int i = 0 ;i < 155 ;i ++ )
{
int x = random.nextInt(width);
int y = random.nextInt(height);
int xl = random.nextInt( 12 );
int yl = random.nextInt( 12 );
g.drawLine(x,y,x + xl,y + yl);
}
String sRand = "" ;
for ( int i = 0 ;i < 4 ;i ++ ){
String rand = String.valueOf(random.nextInt( 10 ));
sRand += rand;
g.setColor( new Color( 20 + random.nextInt( 110 ), 20 + random.nextInt( 110 ), 20 + random.nextInt( 110 )));
g.drawString(rand, 13 * i + 6 , 16 );
}
session.setAttribute( " rand " ,sRand);
g.dispose();

ImageIO.write(image, " JPEG " ,os);
os.flush();
os.close();
os = null ;
response.flushBuffer();
out.clear();
out = pageContext.pushBody();
}
catch (IllegalStateException e)
{
System.out.println(e.getMessage());
e.printStackTrace();
} %>

��浪�?/a> 2007-03-19 12:57 发表评论

Jndi and c3p0 in Tomcat

Sun, 18 Mar 2007 08:46:00 GMT

Tomcat 中Jndi是��用Tomcat自带的连接池
抛弃Tomcat自带的连接池。��用c3p0 �?br>
环境�Q�Tomcat 5.5.20
下面配置只适合Tomcat 5.5.X

下面来看Jndi �?c3p0 �l�合�Q?br>c3p0 下蝲地址�Q?a >http://nchc.dl.sourceforge.net/sourceforge/c3p0/c3p0-0.9.0.4.bin.zip
�?c3p0-0.9.0.4.jar 攑ֈ�应用服务的WEB-INF/lib目录下。如�Q�DBTest/WEB-INF/lib

1.在server.xml�?lt;Context>内加�Q�完整的�C�Z��Q?br>

<Context path="/DBTest" docBase="DBTest"
        debug="5" reloadable="true" crossContext="true">
<Resource auth="Container"
driverClass="com.mysql.jdbc.Driver"
                                    maxPoolSize="50" minPoolSize="2" acquireIncrement="2"
                                    name="jdbc/connPool" user="root" password=""
                                    factory="org.apache.naming.factory.BeanFactory"
                                    type="com.mchange.v2.c3p0.ComboPooledDataSource"
                                    jdbcUrl="jdbc:mysql://localhost:3306/test" />
Context>

2.在web.xml��d��Q?br>

  <resource-ref>
      <description>DB Connectiondescription>
      <res-ref-name>jdbc/connPoolres-ref-name>
      <res-type>javax.sql.DataSourceres-type>
      <res-auth>Containerres-auth>
  resource-ref>

3.��试��面testConnPool.jsp

<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<sql:query var="rs" dataSource="jdbc/connPool">
select id, typename from text
sql:query>

<html>
  <head>
    <title>DB Test Conn Pool c3p0 and Jndititle>
  head>
  <body>

  <h2>Resultsh2>

<c:forEach var="row" items="${rs.rows}">
    id: ${row.id}<br/>
    name: ${row.typename}<br/>
c:forEach>

  body>
html>

��浪�?/a> 2007-03-18 16:46 发表评论

Tomcat��集

Thu, 15 Mar 2007 08:59:00 GMT

参照: http://www.360doc.com/showWeb/0/0/207707.aspx

环境�Q?br>Tomcat 5.5.20
Apache 2.2.3

1.机器A 里有TomcatA\webapps\Test目录�Q?机器B里TomcatB\webapps\Test目录。其web.xml文�g一��P��两个都在之前加上

2.两个Tomcat\conf\server.xml的如下内容去掉注释，没有��在之前加上去：

<Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
                 managerClassName="org.apache.catalina.cluster.session.DeltaManager"
                 expireSessionsOnShutdown="false"
                 useDirtyFlag="true"
                 notifyListenersOnReplication="true">

            <Membership
                className="org.apache.catalina.cluster.mcast.McastService"
                mcastAddr="228.0.0.4"
                mcastPort="45564"
                mcastFrequency="500"
                mcastDropTime="3000"/>

            <Receiver
                className="org.apache.catalina.cluster.tcp.ReplicationListener"
                tcpListenAddress="auto"
                tcpListenPort="4001"
                tcpSelectorTimeout="100"
                tcpThreadCount="6"/>

            <Sender
                className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
                replicationMode="pooled"
                ackTimeout="15000"
                waitForAck="true"/>

            <Valve className="org.apache.catalina.cluster.tcp.ReplicationValve"
                   filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>

            <Deployer className="org.apache.catalina.cluster.deploy.FarmWarDeployer"
                      tempDir="/tmp/war-temp/"
                      deployDir="/tmp/war-deploy/"
                      watchDir="/tmp/war-listen/"
                      watchEnabled="false"/>

            <ClusterListener className="org.apache.catalina.cluster.session.ClusterSessionListener"/>
        Cluster>

3.接下来配�|�Apache\conf\httpd.conf
其中�q�三个去掉注释：

LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule proxy_http_module modules/mod_proxy_http.so

末尾加上�Q?br>

ProxyRequests Off

ProxyPass /helloworld balancer://mycluster stickysession=jsessionid nofailover=On

BalancerMember http://192.168.0.100:8080
BalancerMember http://192.168.0.101:8080

SetHandler balancer-manager
Order Deny,Allow
Deny from all
Allow from all

SetHandler server-status
Order Deny,Allow
Deny from all
Allow from all

说明�Q?br>ProxyPass /helloworld balancer://mycluster stickysession=jsessionid nofailover=On

BalancerMember http://192.168.0.100:8080
BalancerMember http://192.168.0.101:8080

ProxyPass��Z��理�{发的Url,卛_��所有访�?/span>/helloworld的请求�{发到��集balancer://mycluster
BalancerMember为群集的成员�Q�即��集服务�?/span>A�?/span>B�Q�负载均衡服务器会根据均衡规则来��请求�{发给BalancerMember�?br>

4.��试��面�Q?br>TomcatA\webapps\Test\index.html内容如下�Q?br>

<html>
<head><title>Tomcat 5.5.20 ��集1title>head>

<body>
<center>Tomcat 1��h��
center>
body>
html>

TomcatB\webapps\Test\index.html内容如下�Q?br>

<html>
<head><title>Tomcat 5.5.20 ��集2title>head>

<body>
<center>Tomcat 2��h��在TomcatB��Z��
center>
body>
html>

启动TomcatA和TomcatB�Q�再启动Apache
http://localhost/helloworld/Test/index.html
后有出现上面两个��面的�Q一个说明配�|�成功�?br>不断��h��Q�这个页面不断交�ѝ�?br>
�Q�）

��浪�?/a> 2007-03-15 16:59 发表评论

用免安装的Tomcat

Mon, 12 Mar 2007 11:44:00 GMT

下蝲免安装的Tomcat

解压到目录中�Q�如�Q�C:\apache-tomcat-5.5.20

直接�q�行bin/startup.bat不能启动�Q?br>
郁闷�Q�说CATALINA_HOME环境变量没有讑֥��?br>
然后设下
CATALINA_HOME=C:\apache-tomcat-5.5.20

��可以了�?br>
:)

��浪�?/a> 2007-03-12 19:44 发表评论

Mon, 12 Mar 2007 11:26:00 GMT

今天�W�二�ơ配�|�连接池�Q�写下来以便以后可以参考�?br>
在Tomcat/webapps/目录下徏立DBTest目录�Q�即为服务目录）
DBTest建立WEB-INF目录�?br>
1.WEB-INF目录下创建web.xml文�g�Q�如下：

< web-app xmlns ="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation ="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
    version ="2.4" >
   < description > MySQL Test App description >
   < resource-ref >
       < description > DB Connection description >
       < res-ref-name > jdbc/TestDB res-ref-name >
       < res-type > javax.sql.DataSource res-type >
       < res-auth > Container res-auth >
   resource-ref >
web-app >

2.再Tomcat/conf/目录的server.xml文�g�?lt;/Host>之前加：

<Context path="/DBTest" docBase="DBTest"
        debug="5" reloadable="true" crossContext="true">

  <Resource name="jdbc/TestDB" auth="Container" type="javax.sql.DataSource"
               maxActive="100" maxIdle="30" maxWait="10000"
               username="root" password="" driverClassName="com.mysql.jdbc.Driver"
               url="jdbc:mysql://localhost:3306/test?autoReconnect=true"/>

Context>

3.把MySQL的JDBC驱动�E�序攑ֈ�Tomcat/commons/lib/目录下，jstl.jar和standard.jar攑ֈ�webapps/DBTest/WEB-INF/lib/目录下�?br>

4.创徏数据库表�Q?br>

CREATE TABLE testdata (
  id int NOT NULL auto_increment PRIMARY KEY,
  name varchar(50),
  email varchar(50)
) ENGINE=MyISAM;

5.��试��面test.jsp�Q?br>

<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<sql:query var="rs" dataSource="jdbc/TestDB">
select id, name, email from testdata
sql:query>

<html>
  <head>
    <title>DB Testtitle>
  head>
  <body>

  <h2>Resultsh2>

<c:forEach var="row" items="${rs.rows}">
    姓名�Q?{row.name}<br/>
    邮箱�Q?nbsp;${row.email}<br/>
c:forEach>

  body>
html>

��浪�?/a> 2007-03-12 19:26 发表评论

日韩一二三区视频,亚洲高清久久,免费日韩一区二区三区

tomcat ���止列出目录

get 方式中文问题

不��用server.xml配置JNDI on Tomcat 5.5.X

tomcat5下jsp出现getOutputStream() has already been called for this response异常的原因和解决�Ҏ��

Jndi and c3p0 in Tomcat

Tomcat���集

用免安装的Tomcat

tomcat ��止列出目录

Tomcat��集