BlogJava-学习笔迹-随笔分类-OpenSource

log4j.properties

流浪汗 — Fri, 11 Apr 2008 04:01:00 GMT

log4j.properties文件

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-4r %d %-5p %l - %m%n
log4j.logger.net.blogjava.chenlb=DEBUG
log4j.rootLogger=INFO, stdout

解释下pattern

r	开始到日志的毫秒数
d	日志的时间
p	日志级别
l	包括类全名.方法还有在第几行,这样在eclipse的Console里点可以直接转到源码
m	日志的内容
n	换行
c	类全名
M	日志所在的方法名
L	日志所在的行号
t	可能是线程启动的方法名
F	文件名,包括后缀

流浪汗 2008-04-11 12:01 发表评论

solr on tomcat

流浪汗 — Tue, 25 Mar 2008 04:40:00 GMT

在Tomcat下部署solr自带的例子

下载：
apache-solr-1.2.0.zip http://apache.mirror.phpchina.com/lucene/solr/1.2/apache-solr-1.2.0.zip
apache-tomcat-5.5.26.zip http://apache.mirror.phpchina.com/tomcat/tomcat-5/v5.5.26/bin/apache-tomcat-5.5.26.zip

1.solr解压到E:\solr。tomcat解压到e:\tomcat。

2.把E:\solr\dist\apache-solr-1.2.0.war放到E:\tomcat\webapps目录下改名为solr.war。

3.把E:\solr\example目录中的solr文件夹复制到E:\tomcat\目录下。

4.在E:\tomcat\conf\Catalina\localhost目录下创建一个solr.xml文件，内容如下：

xml version="1.0" encoding="UTF-8"?>

<Context docBase="" debug="0" crossContext="true" >
<Environment name="solr/home" type="java.lang.String" value="e:/tomcat/solr" override="true" />
Context>

5.启动Tomcat。可以打开http://localhost:8080/solr/admin

也可以不用JNDI方式。第3步把它复制到E:\tomcat\bin目录下，就不用第4步了。

我部署时困了很久，启动Tomcat后

org.apache.catalina.core.StandardContext start
严重: Error filterStart
org.apache.catalina.core.StandardContext start
严重: Context [/solr] startup failed due to previous errors

老是怀疑solr/home配置错了。但启动日志又有Loaded SolrConfig: solrconfig.xml。又换了solr版本，又换tomcat版本。还是出现上面的错误。只是郁闷。后来怀疑jdk了。JAVA_HOME改前几天我安装的，然后一片惊喜，可以启动了。那JDK是机子本来就有的，怀疑就没有安装好，或版本太低了是：(build 1.5.0-b64)，我安装的是 (build 1.5.0_15-b04)。

终于解决，就写下来。高兴ing... 吃饭。

流浪汗 2008-03-25 12:40 发表评论

dom4j UTF-8 乱码 Invalid byte 2 of 2-byte UTF-8 sequence

流浪汗 — Wed, 05 Sep 2007 16:10:00 GMT

UTF-8修改(写xml文件乱码)，报Invalid byte 2 of 2-byte UTF-8 sequence错误。写gb2312和gbk没事，写xml是网上的例子，用了FileWirter。然后找到

~临风轻扬~

博客：http://blog.csdn.net/redez/archive/2005/11/11/527897.aspx

说到用FileOutPutStream

看例子(是个测试类，只给出这个修改方法，测试类请看——dom4j 读 xml：http://www.blogjava.net/chenlb/archive/2007/09/05/143036.html)：

    public void testModXml() {
        List list = document.selectNodes("/company/tel" );
        Random rm = new Random();
        for(Element tel : (List<Element>) list) {

            logger.info("tel: "+tel.getTextTrim());
            tel.setText("020-12345678-"+rm.nextInt(100));
        }

        Element root = document.getRootElement();

        for(int i=0; i<2; i++) {
            Element tel = root.addElement("tel");
            tel.setText("020-12345678-"+rm.nextInt(100));
        }


        XMLWriter writer;
        try {
            OutputFormat format = OutputFormat.createPrettyPrint();
            //format.setEncoding("UTF-8");
            FileOutputStream fos = new FileOutputStream(xmlFile);
            //writer = new XMLWriter(new FileWriter(xmlFile), format);
            writer = new XMLWriter(fos, format);
            writer.write(document);
            writer.close();
        } catch (IOException e) {
            // TODO 自动生成 catch 块
            logger.error("修改xml文件失败!");
            e.printStackTrace();
        }
    }

流浪汗 2007-09-06 00:10 发表评论

dom4j 读 xml 文件

流浪汗 — Wed, 05 Sep 2007 15:58:00 GMT

由于要保存一些项目中只有一个而且很少改的，用数据库存储太浪费了，用xml保存吧。

1.现在来看下读xml，xml文件如下：

xml version="1.0" encoding="UTF-8"?>

<company>
  <tel>020-12345678-66tel>
  <tel>020-12345678-85tel>
  <introduce>

公司简介

]]>
introduce>
company>

2.用dom4j 读，

package cn.rentbus;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
//import java.io.FileWriter;
import java.util.Iterator;
import java.util.List;
import java.util.Random;

import junit.framework.TestCase;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

public class Dom4jXmlTest extends TestCase {

    protected final Log logger = LogFactory.getLog(getClass());

    private SAXReader reader;
    private Document document;
    private File xmlFile;

    protected void setUp() throws Exception {
        xmlFile = new File("WEB-INF/company.xml");
        reader = new SAXReader();
        document = reader.read(xmlFile);

    }

    protected void tearDown() throws Exception {
        super.tearDown();
    }

    public void testReadXml() {
        Element root = document.getRootElement();

        for ( Iterator i = root.elementIterator( "tel" ); i.hasNext(); ) {
            Element tel = (Element) i.next();
            logger.info("tel: "+tel.getTextTrim());
            // do something
        }

        logger.info("==== XPath use on tel ====");

        List list = document.selectNodes("/company/tel" );
        for(Element tel : (List<Element>) list) {
            logger.info("tel: "+tel.getTextTrim());
        }

        for ( Iterator i = root.elementIterator( "introduce" ); i.hasNext(); ) {
            Element introduce = (Element) i.next();
            logger.info("introduce: "+introduce.getTextTrim());
            // do something
        }

        logger.info("==== XPath use on introduce ====");

        Node node = document.selectSingleNode("/company/introduce");

        String introduce = node.getText();
        logger.info("introduce: "+introduce.trim());


    }

}

注意：如果用到XPath，需要jaxen-1.1-beta-6.jar(发本包/lib下有)

我的环境：
dom4j-1.6.1.jar
jaxen-1.1-beta-6.jar

流浪汗 2007-09-05 23:58 发表评论

send email with velocity and spring 完整示例

流浪汗 — Tue, 21 Aug 2007 11:43:00 GMT

由于项目里要发邮件，用了spring 和 velocity 模板。写下来以后可以看，好记性不如博客。
版本说明下：
spring 2.0.6
velocity 1.5
javamail 用 spring/lib下的

1.封装邮件信息类：

package com.chenlb.mail;

import java.util.Map;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.velocity.app.VelocityEngine;
import org.springframework.mail.MailException;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.ui.velocity.VelocityEngineUtils;

/**
* 邮件发送器
* @作者 chenlb
* @创建时间 2007-7-28 下午03:35:31
*/
public class VelocityTemplateMailMessage {

    protected final Log logger = LogFactory.getLog(getClass());

    private JavaMailSender javaMailSender;
    private VelocityEngine velocityEngine;
    private String from;
    private String title;
    private String encoding;
    private String templateLocation;
    private String[] toEmails;
    private Map model;

    public boolean send() {
        MimeMessage msg = javaMailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(msg);

        try {
            helper.setFrom(from);
            helper.setSubject(title);
            helper.setTo(toEmails);
            helper.setText(getMessage(), true);   //如果发的不是html内容去掉true参数
            javaMailSender.send(msg);

        } catch (MessagingException e) {
            // TODO 自动生成 catch 块
            if(logger.isWarnEnabled()) {
                logger.warn("邮件信息导常! 邮件标题为: "+title);
            }
            return false;
            //e.printStackTrace();
        } catch (MailException me) {
            // TODO: handle exception
            if(logger.isWarnEnabled()) {
                logger.warn("发送邮件失败! 邮件标题为: "+title);
            }
            return false;
        }
        return true;
    }


    /**
     * 邮件模板中得到信息
     * @return 返回特发送的内容
     */
    private String getMessage() {
        return VelocityEngineUtils.mergeTemplateIntoString(velocityEngine,
                templateLocation, encoding, model);
    }

    private String[] createToEmail(String to) {
        return new String[] {to};
    }

    public void setToEmail(String to) {
        setToEmails(createToEmail(to));
    }

    public void setJavaMailSender(JavaMailSender javaMailSender) {
        this.javaMailSender = javaMailSender;
    }

    public void setVelocityEngine(VelocityEngine velocityEngine) {
        this.velocityEngine = velocityEngine;
    }

    public void setEncoding(String encoding) {
        this.encoding = encoding;
    }

    public void setModel(Map model) {
        this.model = model;
    }

    public void setTemplateLocation(String templateLocation) {
        this.templateLocation = templateLocation;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public void setToEmails(String[] toEmails) {
        this.toEmails = toEmails;
    }

    public void setFrom(String from) {
        this.from = from;
    }

    public String getTemplateLocation() {
        return templateLocation;
    }
}

2.spring配置文件，applictionContext-mail.xml：

xml version="1.0" encoding="UTF-8"?>
DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN"
        "dtd/spring-beans-2.0.dtd">

<beans>

    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
          <list>
              <value>classpath:mail.propertiesvalue>
          list>
      property>
    bean>

    <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="host" value="${mail.host}" />
        <property name="username" value="${mail.username}" />
        <property name="password" value="${mail.password}" />
        <property name="defaultEncoding" value="UTF-8">property>
        <property name="javaMailProperties">
            <props>
                <prop key="mail.smtp.auth">${mail.smtp.auth}prop>
                <prop key="mail.smtp.timeout">${mail.smtp.timeout}prop>
            props>
        property>
    bean>

    <bean id="velocityEngine" class="org.springframework.ui.velocity.VelocityEngineFactoryBean">
        <property name="resourceLoaderPath" value="classpath:velocity">property>
    bean>

    <bean id="templateMail" class="com.chenlb.mail.VelocityTemplateMailMessage">
        <property name="javaMailSender" ref="mailSender">property>
        <property name="from" value="${mail.from}">property>
        <property name="encoding" value="UTF-8">property>
        <property name="templateLocation" value="test.vm">property>
        <property name="velocityEngine" ref="velocityEngine">property>
        <property name="title" value="wwww.blogjava.net/chenlb">property>
    bean>

beans>

说明：模板文件放到classpath的velocity目录下，可自行改。

3.发送者邮件信息，mail.properties(classpath位置)：

mail.from=yourname@126.com
mail.host=smtp.126.com
mail.password=yourpassword
mail.smtp.auth=true
mail.smtp.timeout=25000
mail.username=yourname

4.模板文件，text.vm(classpath的velocity目录下)：

你好！${me} 这是模板生成的邮件。

5.使用：

VelocityTemplateMailMessage vtmm = (VelocityTemplateMailMessage) context.getBean("templateMail");
Map<String, String> data = new HashMap<String, String>();
data("me","yourname");
vtmm.setModel(data);
vtmm.setToMail("yourOtherMail@163.com");
vtmm.setTitle("mail with veloctiy and spring");
vtmm.send();

看下是否收到邮件了。^_^

流浪汗 2007-08-21 19:43 发表评论

unable to find resource velocity in spring

流浪汗 — Fri, 17 Aug 2007 18:11:00 GMT

Velocity 邮件模板在Spring 中发邮件报unable to find resource 'WEB-INF/test.vm' in any resource loader导常。配置如下：

    <bean id="templateMail" class="com.chenlb.mail.VelocityTemplateMessage">
        <property name="javaMailSender" ref="mailSender">property>
        <property name="from" value="${mail.from}">property>
        <property name="encoding" value="UTF-8">property>
        <property name="templateLocation" value="WEB-INF/test.vm">property>
        <property name="velocityEngine">
            <bean class="org.springframework.ui.velocity.VelocityEngineFactoryBean">bean>
        property>
        <property name="title" value="www.blogjava.net/chenlb">property>
    bean>

邮件内容生成如下：

VelocityEngineUtils.mergeTemplateIntoString(velocityEngine, templateLocation, encoding, model);

但导常，说不可用的资源。

说明：VelocityEngineUtils.mergeTemplateIntoString()里的templateLocation的文件，不会像Spring一样找。然后就看Spring 的 VelocityEnginFactory API和试，最后发现<bean class="org.springframework.ui.velocity.VelocityEngineFactoryBean">bean>
单独定义，并配置resourceLoaderPath属性即可搞定。

配置后的：

    <bean id="velocityEngine" class="org.springframework.ui.velocity.VelocityEngineFactoryBean">
        <property name="resourceLoaderPath" value="WEB-INF/">property>
    bean>

    <bean id="templateMail" class="com.chenlb.mail.VelocityTemplateMessage">
        <property name="javaMailSender" ref="mailSender">property>
        <property name="from" value="${mail.from}">property>
        <property name="encoding" value="UTF-8">property>
        <property name="templateLocation" value="test.vm">property>
        <property name="velocityEngine" ref="velocityEngine">property>
        <property name="title" value="wwww.blogjava.net/chenlb">property>
    bean>

resourceLoaderPath是由Spring设置过的，跟平常的(Spring)文件资源一样方式引用，Spring真的太方便了。

流浪汗 2007-08-18 02:11 发表评论

Spring ehcache 之"城市"缓存

流浪汗 — Thu, 02 Aug 2007 06:35:00 GMT

摘要: 先描述下我的环境eclipse 3.2.2+myeclilpse 5.5.1Spring 2.0.6,Ehcache用spring2.0.6带的1.2.4加入的jarSpring.jarcommons-logging.jarehcache-1.2.4.jarlog4j-1.2.14.jarjunit3.8.1.jar ... 阅读全文

流浪汗 2007-08-02 14:35 发表评论

ehcahe 了解

流浪汗 — Thu, 02 Aug 2007 06:19:00 GMT

      想学习缓存框架已经很久了，一直没做到，可能是太忙了．现在开始学习了，

1.下载
我下的是1.2.4
下载地址: http://sourceforge.net/project/showfiles.php?group_id=93232

2.看了文档,有几个核心的类要记住
CacheManager   缓存管理器
Cache   缓存
Element   被缓存的内容

CacheManager 可以是单例,也可以是instance
CacheManager.create();返回单例
直接new 是instance

添加Cache
CacheManager singletonManager = CacheManager.create();
Cache memoryOnlyCache = new Cache("testCache", 5000, false, false, 5, 2);
manager.addCache(memoryOnlyCache);

得到Cache
Cache test = singletonManager.getCache("testCache");

Cache的参数可以放到属性文件里,我比较关注这点

在下载来的包里有ehcache.xml文件,

讲不清楚还是写个例子好,看我例子的文章: http://www.blogjava.net/chenlb/archive/2007/08/02/133988.html

官方手册
http://ehcache.sourceforge.net/EhcacheUserGuide.html

流浪汗 2007-08-02 14:19 发表评论

utf-8编码页面与 fileupload 乱码问题

流浪汗 — Thu, 26 Jul 2007 09:13:00 GMT

      我的页面都是UTF-8，所有请求中文都没有问题，但一个表单里加了 fileupload 后，就乱码了。用到fileItem.getString();方法，结果乱码。网上找了下用getString("UTF-8");就可了。^_^

      fileupload是commons-fileupload-1.0.jar的

      多谢。http://argen.bokee.com/viewdiary.14753538.html

流浪汗 2007-07-26 17:13 发表评论

iBatis 对 hsql 的 selectKey

流浪汗 — Sat, 09 Jun 2007 14:21:00 GMT

call identity();

    <insert id="addUser" parameterClass="user">
        insert into User(UserName,Password) values(#userName#,#password#)
        <selectKey keyProperty="uid" resultClass="int">
            call identity()
        selectKey>
    insert>

流浪汗 2007-06-09 22:21 发表评论

build-blank.xml

流浪汗 — Sat, 05 May 2007 06:32:00 GMT

第一个项目都要写 build.xml 一些基本的东西先写好

xml version="1.0" encoding="UTF-8"?>
<project name="jsp-svn" default="init">

    <property file="build.properties" />

    <property name="src.java.dir" value="src" />
    <property name="src.test.dir" value="test" />
    <property name="build.java.dir" value="build/classes/java" />
    <property name="build.test.dir" value="build/classes/test" />
    <property name="build.classes.dir" value="build/classes" />
    <property name="test.docxml.dir" value="doc/test/xml" />
    <property name="test.reports.dir" value="doc/test/reports" />
    <property name="web.root" value="WebContent" />


    <path id="project.classpath">
        <fileset dir="${web.root}/WEB-INF/lib">
            <include name="*.jar" />
        fileset>
        <pathelement location="${build.java.dir}" />
        <pathelement location="${build.test.dir}" />
        <pathelement location="${junit.jar}" />
    path>

    <target name="init">
        <mkdir dir="${build.java.dir}" />
        <mkdir dir="${build.test.dir}" />
    target>

    <target name="compile.java" depends="init">
        <mkdir dir="${build.java.dir}" />
        <javac destdir="${build.java.dir}">
            <src path="${src.java.dir}" />
            <classpath refid="project.classpath">
            classpath>
        javac>
    target>

    <target name="compile.test" depends="compile.java">
        <mkdir dir="${build.test.dir}" />
        <javac destdir="${build.test.dir}">
            <src path="${src.test.dir}" />
            <classpath refid="project.classpath" />
        javac>
    target>

    <target name="compile" depends="compile.java,compile.test">
    target>

    <target name="build.java" depends="compile.java">
        <copy todir="${build.java.dir}" preservelastmodified="true">
            <fileset dir="${src.java.dir}">
                <include name="**/*.*" />
                <exclude name="**/*.java" />
            fileset>
        copy>
    target>

    <target name="build.test" depends="compile.test">

    target>
    <target name="build" depends="build.java,build.test" />
    <target name="deploy" depends="build.java">

    target>

    <target name="test" depends="build">
        <mkdir dir="${test.docxml.dir}" />
        <mkdir dir="${test.reports.dir}" />
        <junit haltonfailure="yes" fork="yes">
            <formatter type="plain" usefile="false" />
            <formatter type="xml" />
            <test name="example.ExampleTest" todir="${test.docxml.dir}">
            test>
            <classpath refid="project.classpath" />
        junit>

        <junitreport todir="${test.docxml.dir}">
            <fileset dir="${test.docxml.dir}">
                <include name="TEST-*.xml" />
            fileset>

            <report format="frames" todir="${test.reports.dir}" />
        junitreport>

    target>

    <target name="schema" depends="build.java">
        <taskdef name="schemaexport" classname="org.hibernate.tool.hbm2ddl.SchemaExportTask">
            <classpath refid="project.classpath" />
        taskdef>
        <schemaexport config="${build.java.dir}/hibernate.cfg.xml"
            quiet="no" text="true" drop="no" delimiter=";"
            output="${build.classes.dir}/${project.name}_db.sql" />
    target>

    <target name="clean">
        <delete includeEmptyDirs="true">
            <fileset dir="${build.classes.dir}">
                <include name="**/*.class" />
            fileset>
        delete>
    target>
project>

build.properties

junit.jar=${eclipse.home}/plugins/org.junit_3.8.1/junit.jar

流浪汗 2007-05-05 14:32 发表评论

初用 hsqldb

流浪汗 — Sat, 28 Apr 2007 07:31:00 GMT

今天初了下 hsqldb

下载 hsqldb
http://sourceforge.net/project/showfiles.php?group_id=23316

下载 hsqldb_1_8_0_7.zip

解压到 D:/hsqldb

在 D:/hsqldb 目录下创建 runxdb.bat 文件如下:

cd data
java -cp ../lib/hsqldb.jar org.hsqldb.Server -database.0 xdb -dbname.0 xdb

然后双击 runxdb.bat 启动 hsqldb Server

到目录 demo 下运行 runManagerSwing.bat 来创建表
type : HSQL Database Engine Server
url : jdbc:hsqldb:hsql://localhost/xdb
user : SA

建表:

CREATE MEMORY TABLE TEXT(ID INTEGER GENERATED BY DEFAULT AS IDENTITY(START WITH 1) NOT NULL PRIMARY KEY,NAME VARCHAR);

添加数据:

INSERT INTO TEXT VALUES(1,'chenlb')
INSERT INTO TEXT VALUES(2,'Tenny')

Java 文件

package hsqldb;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

/**
*
* @author chenlb 2007-4-28
*
*/
public class HsqldbFirstSimple {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

        try {
            Class.forName("org.hsqldb.jdbcDriver" );
        } catch (Exception e) {
            System.out.println("ERROR: failed to load HSQLDB JDBC driver.");
            e.printStackTrace();
            return;
        }

        try {
            Connection c = DriverManager.getConnection("jdbc:hsqldb:hsql://localhost/xdb", "sa", "");
            Statement stmt = c.createStatement();
            ResultSet rs = stmt.executeQuery("select * from text");
            while(rs.next()) {
                System.out.println(rs.getString(1)+"\t"+rs.getString(2));
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}

流浪汗 2007-04-28 15:31 发表评论

Ant + hibernate 生成*.sql

流浪汗 — Tue, 27 Mar 2007 12:58:00 GMT

一开始没有在里加
quiet="no" text="true" drop="no" delimiter=";"
output="${build.class.dir}/schema-export.sql"

运行ant提示失败

下面是正确的：

<target name="schema" depends="build">
        <taskdef name="schemaexport" classname="org.hibernate.tool.hbm2ddl.SchemaExportTask">
            <classpath refid="project.classpath" />
        taskdef>
        <schemaexport config="${src.java.dir}/hibernate.cfg.xml"
            quiet="no" text="true" drop="no" delimiter=";"
            output="${build.class.dir}/schema-export.sql" />
    target>

参考：http://mzrj.itpub.net/post/2660/11489

流浪汗 2007-03-27 20:58 发表评论