姓张的小子 —— 博客

Spring中关于乱码的解决办法

Posted by eDWARD at 15:22

Spring可以在容器加载时在web.xml中配置filter来进行转发过滤，因为我把html作为screen的映射后缀，所以这里可以根据你的情况设置为*.jsp或*.action等等。

    <filter>
        </filter><filter -name>SpringEncodingFilter</filter>
        <filter -class>org.springframework.web.filter.CharacterEncodingFilter</filter>
        <init -param>
<param -name>encoding</param>
<param -value>utf-8</param>
        </init>

    <filter -mapping>
        </filter><filter -name>SpringEncodingFilter</filter>
        <url -pattern>*.html</url>

如果你用到了任何properties配置文件，那么就需要通过java/bin/native2ascii统一转码为utf-8编码方式

native2ascii -encording utf-8 目标路径 转码后路径

所有被渲染的view层的页面顶部增加下面的代码

< %@ page contentType="text/html;charset=UTF-8" pageEncoding="gbk"%>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</meta>

Filed In 学习路上 | Study | Tags: Spring, 乱码, 程序设计 | Add a Comment »

用Spring的MailSender和MailMessage发送邮件（Email）

Posted by eDWARD at 15:20

首先是配置文件：(conf/mail.xml)

<xml version="1.0" encoding="UTF-8"?>
<!--DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "spring-beans.dtd" -->
<beans>
<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
<property name="host">
<value>smtp.abc.com</value>
</property>
<property name="javaMailProperties">
<props>
    <!-- 使用用户名和密码验证 -->
<prop key="mail.smtp.auth">true</prop>
  </props>
</property>
<property name="username">
  <value>username</value>
</property>
<property name="password">
  <value>password</value>
</property>
</bean>

<!-- 发送信息对象，可以在发送前设置值 -->
<bean id="mailMessage" class="org.springframework.mail.SimpleMailMessage">
<property name="to">
  <value>to@email.com</value>
</property>
<property name="from">
  <value>from@email.com</value>
</property>
<property name="subject">
  <!-- Email 标题 -->
  <value>A Spring Mail sender</value>
</property>
</bean>

<!-- 发送邮件的类 -->
<bean id="senderMail" class="e.mail.SenderMail">
<property name="mailMessage">
  <ref bean="mailMessage"/>
</property>
<property name="mailSender">
  <ref bean="mailSender"/>
</property>
</bean>
</beans><beans>
</beans></xml>

发送邮件的类：

package e.mail;

import org.springframework.mail.MailException;
import org.springframework.mail.MailSender;
import org.springframework.mail.SimpleMailMessage;

public class SenderMail {
  private MailSender mailSender;
  private SimpleMailMessage mailMessage;

  public SenderMail() {

  }

  public SimpleMailMessage getMailMessage() {
    return mailMessage;
  }
  public void setMailMessage(SimpleMailMessage mailMessage) {
    this.mailMessage = mailMessage;
  }
  public MailSender getMailSender() {
    return mailSender;
  }
  public void setMailSender(MailSender mailSender) {
    this.mailSender = mailSender;
  }

  public void sendMail() {
    SimpleMailMessage message = new SimpleMailMessage(mailMessage);
    //set context,
    message.setText(”this is a test”);

    try {
      mailSender.send(message);
    } catch (MailException e) {
      // TODO Auto-generated catch block
      System.out.println(”fail”);
      e.printStackTrace();
    }
  }
}

测试发送类：

package e.mail.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestSenderMail {

  /**
   * @param args
   */
  public static void main(String[] args) {
    ApplicationContext context = new ClassPathXmlApplicationContext(
        “conf/mail.xml”);

    SenderMail sender = (SenderMail) context
        .getBean(”senderMail”);
    sender.sendMail();
  }
}

Filed In 学习路上 | Study | Tags: Email, Spring, 程序设计 | Add a Comment »

Hibernate处理clob和oracle sequence的备忘录

Posted by eDWARD at 17:30

Hibernate处理clob类型的字段

方法一

字段类型为java.sql.Clob。dataobject & xdoclet：

private Clob colbField;

/**
* @hibernate.property column=”CLOBFIELD” type=”Clob”
*/
public Clob getColbField() {
  return this.colbField;
}
public void setColbField(String colbField) {
  this.colbField = Hibernate.createClob(colbField);
}

获取Clob
CLob clob = xxx.getColbField();
String str = clob.getSubString(1,(int)clob.length());

hbm.xml：

<property name="colbField"
 type="java.sql.Clob"
 update="true"
 insert="true"
 column="CLOBFIELD"
/>

方法二

DataObject中的数据成员类型为String，映射的数据库字段类型为org.springframework.orm.hibernate.support.ClobStringType
Xdoclet：

private String colbField;

/**
* @hibernate.property column=”ClobField” type=”ClobStringType”
*/
public String getColbField() {
  return this.colbField;
}
public void setColbField(String colbField) {
  this.colbField = colbField;
}

hbm.xml：

<property name="servicePerson"
 type="org.springframework.orm.hibernate.support.ClobStringType"
 update="true"
 insert="true"
 column="SERVICEPERSON"
/>

如果使用spring的这个clob类型就需要在applicationContext.xml中的sessionFactory里修改如下配置

<!-- Hibernate -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
  <value>classpath:hibernate.cfg.xml</value>
 </property>
<property name="lobHandler">
  <ref local="oracleLobHandler" />
 </property>
</bean>

<bean id="oracleLobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler" lazy-init="true">
<property name="nativeJdbcExtractor">
  <ref local="nativeJdbcExtractor" />
 </property>
</bean>

<bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.CommonsDbcpNativeJdbcExtractor" lazy-init="true" />

<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
  <ref local="sessionFactory" />
 </property>
</bean>

这两只方式在采用oracle thin方式连接的情况下都有传输限制，解决方法是采用oci连接方式(jdbc:oracle:oci10:@sid)

Hibernate处理oracle sequence

Xdoclet：

/**
* @hibernate.id column=”ID” generator-class=”sequence”
* @hibernate.generator-param name=”sequence” value=”SEQ_XXXX”
*/

hbm.xml：

<id name="id"
 column="ID"
 type="java.lang.Long"
 unsaved-value="null"
>
 <generator class="sequence">
<param name="sequence">SEQ_XXXX</param>
 </generator>
</id>

前提是要提供SEQ：）

Filed In 学习路上 | Study | Tags: 程序设计 | Add a Comment »