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Apacheä¸?/span>Tomcatæ•´åˆ
一åQ?/span>Apacheä¸?/span>Tomcat介ç»
Apache是当å‰ä‹É用最为广泛的WWWæœåŠ¡å™¨èÊYä»Óž¼Œå…ähœ‰ç›¸å½“强大的é™æ€?/span>HTML处ç†çš„能力ã€?/span>
TomcatæœåŠ¡å™¨æ˜¯ä¸€ä¸ªå…费的开放æºä»£ç çš?/span>Web应用æœåŠ¡å™¨ï¼Œå®ƒæ˜¯Apache软äšg基金会（Apache Software FoundationåQ‰çš„Jakarta™å¹ç›®ä¸çš„ä¸€ä¸ªæ ¸å¿ƒé¡¹ç›®ï¼Œç”?/span>Apacheã€?/span>Sunå’?/span> 其他一些公å¸åŠä¸ªähå…±åŒå¼€å‘而æˆã€‚由于有äº?/span>Sunçš„å‚与和支æŒåQŒæœ€æ–°çš„Servletå’?/span>JSP 规范æ€ÀL˜¯èƒ½åœ¨Tomcatä¸å¾—åˆîC½“玎ͼŒTomcat5支æŒæœ€æ–°çš„Servlet 2.4å’?/span>JSP 2.0è§„èŒƒã€‚å› ä¸?/span>Tomcat技术先˜q›ã€æ€§èƒ½½E›_®šåQŒè€Œä¸”å…è´¹åQŒå› 而深å?/span>Java爱好者的喜爱òq¶å¾—åˆîCº†éƒ¨åˆ†è½¯äšgå¼€å‘商的认å¯ï¼ŒæˆäØ“ç›®å‰æ¯”较‹¹è¡Œçš?/span>Web应用æœåŠ¡å™¨ã€?/span>
Tomcatå’?/span>IISã€?/span>Apache½{?/span>WebæœåŠ¡å™¨ä¸€æ øP¼Œå…ähœ‰å¤„ç†HTML™åµé¢çš„功能，å¦å¤–它还是一ä¸?/span>Servletå’?/span>JSP容器åQŒç‹¬ç«‹çš„Servlet容器æ˜?/span>Tomcat的默认模å¼ã€?/span>
二．ä¸ÞZ»€ä¹ˆéœ€è¦æ•´å?/span>
æ•´åˆçš„最主è¦åŽŸå› 是äؓ了在现有的硬件æ¡ä»¶ä¸‹æ供最大的负è²ã€?/span>
如果å•ç‹¬ä½¿ç”¨Tomcatå?/span>JSPæœåŠ¡å™¨ï¼Œåœ¨å·¥ä½œæ•ˆçŽ‡ä¸Šä¼šå˜åœ¨é—®é¢?/span>,Tomcat处ç†é™æ€?/span>HTML的能力ä¸å¦?/span>ApacheåQŒåƈ且所能承å—的最大åƈå‘连接数也有一定的é™åˆ¶åQ?/span>
在测试ä¸åQŒå½“òq¶å‘˜qžæŽ¥è¾ƒå¤šæ—Óž¼ŒTomcatž®×ƒ¼šå¤„于“僉|»”状æ€ï¼Œå¯¹åŽ¾l§çš„è¯äh±‚˜qžæŽ¥å¤±åŽ»å“应。所以现在æå‡ÞZ¸€ä¸?/span>“整刔解决æ–ÒŽ(gu¨©)¡ˆåQšå°†htmlä¸?/span>jsp的功能部分进行明¼‹®åˆ†å·¥ï¼Œè®?/span>tomcatåªå¤„ç?/span>jsp部分åQŒå…¶å®ƒçš„ç”?/span>apache˜q™ä¸ªweb server处ç†ã€?/span>Apacheä¸?/span>Tomcatå„å¸å…¶èŒåQŒé‚£ä¹ˆæœåŠ¡å™¨çš„整体效率就能够得到æå‡ã€?/span>
三．整åˆçš„基本原ç?/span>
作äØ“Apache下é¢çš„å™å¹ç›®åQ?/span>Tomcat ä¸?/span> Apache之间有ç€å¤©ç„¶çš„蔾p…R€‚在实际æ“作ä¸ï¼Œä¸»è¦æ˜?/span>Apache作äØ“ä¸ÀLœåŠ¡å™¨˜qè¡ŒåQŒå½“监å¬åˆ°æœ‰jsp或è€?/span>servlet的请求时åQŒå°†è¯äh±‚转呾l?/span>tomcatæœåŠ¡å™¨ï¼Œç”?/span>tomcatæœåŠ¡å™¨è¿›è¡Œè§£æžåŽåQŒå‘å›?/span>apacheåQŒå†ç”?/span>apacheå‘回用户ã€?/span>
åœ?/span>tomcatä¸æœ‰ä¸¤ä¸ªç›‘å¬çš„端å£ï¼Œä¸€ä¸ªæ˜¯8080用于æä¾›webæœåŠ¡,一个是8009用于监å¬æ¥è‡ªäº?/span>apache的请求。当apache收到jsp或è€?/span>servletè¯äh±‚æ—Óž¼Œž®±å‘tomcat çš?/span>8009端å£å‘é€è¯·æ±‚，交由tomcat处ç†åŽï¼Œå†è¿”回给apacheåQŒç”±apache˜q”回¾l™å®¢æˆ—÷€?/span>
四．安装Apacheä¸?/span>TomcatæœåŠ¡å™?/span>
æ“作¾pÈ»ŸçŽ¯å¢ƒåQ?/span>Windows xp home
安装文äšgåQ?/span>apache-tomcat-6.0.14.exe apache_2.2.6-win32-x86-openssl-0.9.8e.msi mod_jk-apache-2.2.4.so
　 åˆ?/span>apache ä¸?/span>tomcat 的官方网站上é¢ä¸‹è½?/span>apache ä¸?/span>tomcatåQŒå®‰è£?/span>apacheä¸?/span>tomcat
åˆ?/span>http://www.apache.org/dist/tomcat/tomcat-connectors/jk/binaries/win32ä¸‹è² mod_jk-apache-2.2.4.so
ž®?/span>mod_jk-apache-2.2.4.so拯‚´åˆ?/span>apache安装目录下é¢çš?/span>modules目录ä¸ã€?/span>
五．修改Tomcat讄¡½®
åœ?/span>tomcatçš?/span>conf目录下å¾ä¸€ä¸?/span>workers.properties的文本文ä»Óž¼Œæ·ÕdŠ 如下é…ç½®
workers.tomcat_home="tomcat安装目录"
#è®?/span>mod_jk模å—知é“Tomcat的安装èµ\å¾?/span>
workers.java_home="java安装目录"
#è®?/span>mod_jk模å—知é“jdk路径
ps="
worker.list=ajp13
#˜q™é‡Œæ˜¯å…³é”®ï¼Œåå—è¦å’Œhttpd.conf的一致。如果这里改äº?/span>httpd.conf也è¦æ”V€?/span>
worker.ajp13.port=8009
#工作端å£,tomcatçš?/span>jk监å¬ç«¯å£åQŒå¯ä»¥æŸ¥çœ?/span>Server.xmlä¸æœ‰port="8009"
worker.ajp13.host=localhost
#Tomcat所在机器，如果安装在与apacheä¸åŒçš„机器则需è¦è®¾¾|?/span>IP
worker.ajp13.type=ajp13
#¾cÕdž‹åQŒå¥½åƒä¸èƒ½æ”¹åQŒä¼šå‡ºé—®é¢?/span>
worker.ajp13.lbfactor=1
#è´Ÿè²òqŒ™¡¡å› å
å…．修改Apache讄¡½®
修改apache安装目录ä¸?/span>conf目录下的httpd.conf,å¢žåŠ å¦‚ä¸‹é…ç½®
　　LoadModule jk_module modules/mod_jk-apache-2.2.4.so
JkWorkersFile "tomcat安装目录/conf/workers.properties"
　JkLogFile "apache安装目录/logs/mod_jk.log"
JkMount /*.jsp ajp13
JkMount /*.do ajp13
七．整åˆæ“作说明
　 mod_jk-apache-2.2.4.so相当于是apacheä¸?/span>tomcat之间的桥æ¢ä¸€æ øP¼Œæ‰€ä»¥åœ¨apacheçš„é…¾|®æ–‡ä»¶ä¸‹é¢åŠ ä¸?/span>LoadModule jk_module modules/mod_jk-apache-2.2.4.so　ž®†æ¤æ¨¡å—载入ã€?/span>
JkWorkersFile "tomcat安装目录/conf/workers.properties"　说明äº?/span>mod_jk-apache-2.2.4.so 如何工作åQŒå½“出现è¦è{å‘æ—¶åQŒå°†è¯äh±‚å‘é€åˆ°é‚£é‡Œ˜q›è¡Œå¤„ç†åQŒä»£è¡¨äº†ä¸€¾pÕdˆ—的工作å‚æ•°ã€?/span>
JkLogFile "apache安装目录/logs/mod_jk.log"　讑֮šæ—¥å¿—的地å€ã€?/span>
JkMountã€€è¯´æ˜Žäº†å°†ä»€ä¹ˆæ ·çš?/span>URL˜q›è¡Œå‘é€åˆ°tomcat˜q›è¡Œå¤„ç†ã€?/span>JkMount /*.jsp ajp13　说明了覞®?/span>jspè¯äh±‚å‘到tomcat,JkMount /*.do ajp13说明了覞®?/span>.doåž‹çš„servletå‘到tomcat˜q›è¡Œå¤„ç†ã€‚在实际的分å‘ä¸åQŒå¦‚æž?/span>servlet命åä¸å¸¦åŽç¼€çš„è¯åQŒå°†æ— æ³•è¢«è¯†åˆ«ï¼Œä¹Ÿå°±æ— æ³•˜q›è¡Œå¤„ç†ã€?/span>
八．¾l“æŸè¯?/span>
在查阅了ä¸å°‘æ–‡ç« ä¹‹åŽåQŒæˆ‘仔细的了解了下这两者进行整åˆçš„˜q‡ç¨‹åQŒç½‘ä¸Šå¾ˆå¤šæ–‡ç« è®²çš„æ•´åˆåº”该丽Ž—是真æ£æ„义上é¢çš„æ•´åˆï¼Œå¸Œæœ›æ¤æ–‡ç« 能够äØ“æ£äØ“˜q™äº›é—®é¢˜è‹¦æ¼çš„åŒè¡Œä»¬è§£å†³ä¸€ç‚¹å°å›°éš¾……ã€?/span>
如果在整åˆè¿‡½E‹ä¸æˆ–者需è¦æ•´å?/span>apache,tomcat,iisåQˆä¸‹½‹‡æ–‡ç« 将讲述åQ‰å¯ä»¥ç»™æˆ‘å‘é‚®äšgåQ?br />
zhangwenlong73@gmail.com
回调: hibernateTemplate. execute(new HibernateCallback() {
public Object doInHibernate(Session session)
throws HibernateException, SQLException {
//doSomething
}
}åQ‰ï¼›
然åŽå»ºç«‹ä¸€ä¸ªæ–‡ä»¶å¤¹,比如D:"hsqldb,在hsqldb目录下å¾ç«‹dataåQŒlib两个å文件夹åQ?br /> ž®†è§£åŽ‹åŽçš„lib目录下的hsqldb.jaræ–‡äšgcopyåˆ?D:"hsqldb"lib 目录下，
ž®†è§£åŽ‹åŽçš„demo目录下的runServer.batå’ŒrunManagerSwing.batæ–‡äšgcopyåˆ?D:"hsqldb 目录下，
2.
修改runServer.batæ–‡äšg的内容如下：
@java -classpath ../lib/hsqldb.jar org.hsqldb.Server %1 %2 %3 %4 %5 %6 %7 %8 %9
修改runManagerSwing.batæ–‡äšg的内容如下：
@java -classpath ../lib/hsqldb.jar org.hsqldb.util.DatabaseManagerSwing %1 %2 %3 %4 %5 %6 %7 %8 %9
3.å…ˆè¿è¡ŒrunServer.batåQŒå¯åŠ¨HSQLDB server,
接瀘qè¡ŒrunManagerSwing.bat, 先弹出cmd½H—å£åQŒæŽ¥ç€å¼¹å‡ºConnect½H—å£åQ?br /> ž®†Connect½H—å£çš„Type选项讄¡½®ä¸?HSQL Database Engine ServeråQŒæŒ‰ok˜qžæŽ¥åˆ°dbåQŒè¿›å…¥HSQL Database Manager½H—å£ã€?br /> ˜q™æ—¶æŸ¥çœ‹data目录下，å‘现生æˆ4个文ä»Óž¼štest.lck, test.log, test.properties, test.script
4.在HSQL Database Managerä¸execute下é¢sql åŽï¼Œ
create table test(id bigint , name varchar , remark varchar);
insert into test(id,name,remark)values(1,'admin','this is remark!');
åœ?test.log ä¸å‡ºçŽ°å†…容：
/*C2*/SET SCHEMA PUBLIC
CONNECT USER SA
create table test(id bigint , name varchar , remark varchar)
INSERT INTO TEST VALUES(1,'admin','this is remark!')
HSQL dbä¸çš„数殞®±æ˜¯å‚¨å˜åœ¨è¿™ä¸ªtest.logæ–‡äšgä¸çš„ã€?br />
5.在hsqldb目录下å¾ç«‹ä¸€javaæ–‡äšgåQŒå†…容如下：
import java.sql.DriverManager;
import java.sql.Statement;
import org.hsqldb.jdbcDriver;
public class HsqlDemo{
public static void main(String[] args){
try {
Class.forName("org.hsqldb.jdbcDriver" );
Connection c = DriverManager.getConnection("jdbc:hsqldb:hsql://localhost", "sa", "");
if(c != null){
System.out.println("Connected db success!");
String sql = "CREATE TABLE T_USER(ID BIGINT,NAME VARCHAR,BIRTHDAY DATE);";
Statement st = c.createStatement();
st.execute(sql);
sql = "INSERT INTO T_USER(ID,NAME,BIRTHDAY)VALUES('1','ADMIN',SYSDATE);";
st.executeUpdate(sql);
if(st != null){
st.close();
}
c.close();
}
} catch (Exception e) {
System.out.println("ERROR: failed to load HSQLDB JDBC driver.");
e.printStackTrace();
return;
}
}
}
å†å¾ç«‹ä¸€test.batæ–‡äšgåQŒå†…容如下（注æ„é…ç½®pathä¸ÞZ½ jdk的安装èµ\径）åQ?br />
set path=D:Program FilesJavajdk1.5.0_07bin
javac -classpath lib/hsqldb.jar HsqlDemo.java
java -cp lib/hsqldb.jar;./ HsqlDemo
˜qè¡Œtest.batæ–‡äšgåŽï¼Œåœ?HSQL Database Manager½H—å£é€‰æ‹©ViewåQŒRefresh tree åQŒå¯ä»¥å‘现已¾l多了T_USER˜q™ä¸ªè¡¨ï¼Œòq¶ä¸”表里é¢å·²æœ‰ä¸€æ¡è®°å½•ã€?br />
6. 退出HSQL Database Manager, 到Hsql Db çš„cmd½H—å£åQŒæŒ‰Ctrl+C¾l“æŸDBã€?br /> 在hsqldb目录下å¾ç«‹server.propertiesåQŒå†…容如下：
server.port=9394
server.database.0=file:data/mydb9394
server.dbname.0=mydb
server.silent=true
建立runServer2.batåQŒå†…容如下：
@java -classpath lib/hsqldb.jar org.hsqldb.Server %1 %2 %3 %4 %5 %6 %7 %8 %9
˜q™æ—¶˜qè¡ŒrunServer2.bat,则会在data目录下创建mydb9394.propertiesåQŒmydb9394.logåQŒmydb9394.lck三个文äšgåQ?br /> å†è¿è¡ŒrunManagerSwing.batåQŒå¼¹å‡ºConnect½H—å£åQŒè¿™æ—‰™œ€è¦å°†
Type选项讄¡½®ä¸?HSQL Database Engine Server
URL 处设¾|®äØ“ jdbc:hsqldb:hsql://localhost:9394/mydb
按okå›_¯˜qžæŽ¥db˜q›å…¥ HSQL Database Managerç•Œé¢ã€?br />
7. Tableçš„æ•°æ®ç±»åž?/span>
|
Name |
Range |
Java Type |
|
INTEGER | INT |
as Java type |
int | java.lang.Integer |
|
DOUBLE [PRECISION] | FLOAT |
as Java type |
double | java.lang.Double |
|
VARCHAR |
as Integer.MAXVALUE |
java.lang.String |
|
VARCHAR_IGNORECASE |
as Integer.MAXVALUE |
java.lang.String |
|
CHAR | CHARACTER |
as Integer.MAXVALUE |
java.lang.String |
|
LONGVARCHAR |
as Integer.MAXVALUE |
java.lang.String |
|
DATE |
as Java type |
java.sql.Date |
|
TIME |
as Java type |
java.sql.Time |
|
TIMESTAMP | DATETIME |
as Java type |
java.sql.Timestamp |
|
DECIMAL |
No limit |
java.math.BigDecimal |
|
NUMERIC |
No limit |
java.math.BigDecimal |
|
BOOLEAN | BIT |
as Java type |
boolean | java.lang.Boolean |
|
TINYINT |
as Java type |
byte | java.lang.Byte |
|
SMALLINT |
as Java type |
short | java.lang.Short |
|
BIGINT |
as Java type |
long | java.lang.Long |
|
REAL |
as Java type |
double | java.lang.Double[1] |
|
BINARY |
as Integer.MAXVALUE |
byte[] |
|
VARBINARY |
as Integer.MAXVALUE |
byte[] |
|
LONGVARBINARY |
as Integer.MAXVALUE |
byte[] |
|
OTHER | OBJECT |
as Integer.MAXVALUE |
java.lang.Object |
在查詢類別å°æ‡‰çš„è¡¨æ ¼æ™‚ï¼Œéœ€æ³¨æ„到繼承的å•é¡ŒåQŒHibernate會自動判定繼扉K—œä¿‚，如果查詢的類別是æŸé¡žåˆ¥çš„爉™¡žåˆ¥ï¼Œå‰‡æœƒ˜q”回與父™åžåˆ¥ã€å™åžåˆ¥ž®æ‡‰çš„所有表æ ÆD³‡æ–™ï¼Œä¾‹å¦‚如果查詢java.lang.ObjectåQŒç”±æ–¼Object在Javaä¸æ˜¯æ‰€æœ‰é¡žåˆ¥çš„爉™¡žåˆ¥ï¼Œæ‰€ä»¥ä¸‹é¢é€™å€‹æŸ¥è©¢æœƒ˜q”回資料庫ä¸æ‰€æœ‰è¡¨æ ¼çš„資料åQ?br />
<project name="build.xml" default="build">
<property name="src.java.dir" location="src"/>
<property name="build.classes.dir" location="build"/>
<path id="project.classpath">
<pathelement location="${build.classes.dir}"/>
</path>
<target name="init">
<mkdir dir="${build.classes.dir}"/>
</target>
<target name="compile" depends="init">
<javac srcdir="${src.java.dir}" destdir="${build.classes.dir}">
<include name="**/EventCodooba.java"/>
</javac>
</target>
<target name="build" depends="compile">
<java classname="com.codooba.EventCodooba.EventCodooba" failonerror="true">
<classpath refid="project.classpath"/>
</java>
<echo>If you see this, it works!!!</echo>
</target>
</project>
Query query = session.createQuery("select user.name from User as user where user.age > ?");
query.setInteger(0, 25);
List names = query.list();
Iterator iterator = names.iterator();
while(iterator.hasNext()) {
System.out.println(iterator.next());
}
session.close();
在设定å‚数值时åQŒå¿…™åÖM¾ç…?? 所讑֮šçš„顺åºï¼Œòq¶ä‹É用对应型æ€çš„setXXX()æ–ÒŽ(gu¨©)³•åQŒä¸€ä¸ªæ‰§è¡Œçš„例å如下åQ?
| Hibernate: select user0_.name as col_0_0_ from user user0_ where user0_.age>? momor caterpillar bush |
æ‚(zh¨¨n)¨å¯ä»¥ä‹É用命åå‚敎ͼˆNamed ParameteråQ‰æ¥å–代˜q™ä¸ªæ–ÒŽ(gu¨©)³•åQŒè¿™å¯ä»¥ä¸ç”¨ä¾ç…§ç‰¹å®šçš„顺åºæ¥è®‘Ö®šå‚æ•°å€û|¼Œòq¶æ‹¥æœ‰è¾ƒå¥½çš„å¯è¯»æ€§ï¼Œç›´æŽ¥æ¥çœ‹ä¸ªä¾‹å：
Query query = session.createQuery("select user.name from User as user where user.age > :minAge");
query.setInteger("minAge", 25);
List names = query.list();
Iterator iterator = names.iterator();
while(iterator.hasNext()) {
System.out.println(iterator.next());
}
session.close();
讑֮šå‘½åå‚æ•°æ—Óž¼Œåœ¨å¾ç«‹Query时先使用:åŽè·Ÿç€å‚æ•°å，之厞®±å¯ä»¥åœ¨setXXX()æ–ÒŽ(gu¨©)³•ä¸ç›´æŽ¥æŒ‡å®šå‚æ•°åæ¥è®¾å®šå‚æ•°å€û|¼Œè€Œä¸ç”¨ä¾ç…§ç‰¹å®šçš„™åºåºã€?