小编KSH*_*TiJ的帖子

我正在尝试与JAXB进行编组.

我的输出就像

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<root>
    <name>&lt;![CDATA[&lt;h1&gt;kshitij&lt;/h1&gt;]]&gt;</name>
    <surname>&lt;h1&gt;solanki&lt;/h1&gt;</surname>
    <id>&lt;h1&gt;1&lt;/h1&gt;</id>
</root>

但我需要输出像

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
    <root>
        <name><![CDATA[<h1>kshitij</h1>]]></name>
        <surname><![CDATA[<h1>solanki</h1>]]></surname>
        <id><![CDATA[0]]></id>
    </root>

我正在使用以下代码来执行此操作.如果我取消注释代码我得到Property Binding Exception.没有它我可以编译,但我没有得到确切的所需输出.

  package com.ksh.templates;

import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import com.sun.xml.bind.marshaller.CharacterEscapeHandler;

public class MainCDATA {
    public static void main(String args[])
    {
        try
        {
            String name = "<h1>kshitij</h1>";
            String surname = "<h1>solanki</h1>";
            String id = "<h1>1</h1>";

            TestingCDATA cdata = new TestingCDATA();
            cdata.setId(id);
            cdata.setName(name);
            cdata.setSurname(surname);

            JAXBContext jaxbContext = JAXBContext.newInstance(TestingCDATA.class);
            Marshaller marshaller = jaxbContext.createMarshaller();
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); …

我使用以下代码在数据库中插入图像.它将存储两个图像,因为我使用过PreparedStatement和Statement.

当我运行此代码时,我在数据库中获得两个图像.但这两个图像是不同的,我不明白为什么.使用PreparedStatement,它插入完美.我希望在使用时拥有相同的图像Statement.为什么它现在不起作用,我怎样才能使它工作？

import java.io.*;
import java.sql.*;
public class Image
{
    public static void main(String args[]) throws Exception
    {
        System.out.println("kshitij");
        Class.forName("com.mysql.jdbc.Driver");
        Connection cn=DriverManager.getConnection("jdbc:mysql://localhost:3306/jsfdb","root","kshitij");
        Statement st=cn.createStatement();
        File f1=new File("c:\\k1.jpg");
        FileInputStream fin=new FileInputStream(f1);
        //DataInputStream dataIs = new DataInputStream(new FileInputStream(f1));
        PreparedStatement pst = cn.prepareStatement("insert into registration(image) values(?)");
        //pst.setInt(1,67);
        pst.setBinaryStream(1,fin,fin.available());
        pst.executeUpdate();
        //int length=(int)f1.length();
        byte [] b1=new byte[(int)f1.length()];
        fin.read(b1);
        fin.close();
        st.executeUpdate("insert into registration(image) values('"+b1+"')");
        System.out.println("Quesry Executed Successfully");
        FileOutputStream fout=new FileOutputStream("d://k1.jpg");
        fout.write(b1);
        fout.close();
    }
}

MySQL的

CREATE DATABASE IF …

你好我没有参数转发页面时有错误.这只发生在构造函数中.方法没有发生.

喜欢

public EditNewsBean() throws Exception
{
    log.info("In EditNewsBean Constructor");

    Object o1=request.getParameter("countryCode");
    Object o2=request.getParameter("editNewsID");
    if(o1==null || o2==null || o1.toString().length()==0 || o2.toString().length()==0)
    {
        FacesContext.getCurrentInstance().getExternalContext().redirect("/HeWebEV/admin/ManageNews.jsf");
    }

    setEditNews(Facade.othfac().getTVecNewsFindAllValidTill(request.getParameter("countryCode").toString(),Integer.valueOf(request.getParameter("editNewsID"))));
}

当我通过没有参数的请求表格时,我得到的错误就像,

com.sun.faces.mgbean.ManagedBeanCreationException: Cant instantiate class: com.efacec.sg.he.plugme.admin.EditNewsBean.
        at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:193)
        at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:102)
        at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409)
        at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269)
        at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244)
        at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116)
        at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
        at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
        at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:61)
        at org.apache.el.parser.AstValue.getValue(AstValue.java:107)
        at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
        at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
        at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
        at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
        at javax.faces.component.UIOutput.getValue(UIOutput.java:169)
        at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:205)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:355)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:164)
        at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:312)
        at com.sun.faces.renderkit.html_basic.GridRenderer.renderRow(GridRenderer.java:185)
        at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:129)
        at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845)
        at org.primefaces.renderkit.CoreRenderer.renderChild(CoreRenderer.java:59) …

我试图从xml中提取值.我在xml具有属性时遇到问题.喜欢以下存储过程

DELIMITER $$
DROP PROCEDURE IF EXISTS `excel`.`insert_items` $$
CREATE DEFINER=`root`@`localhost` PROCEDURE `insert_items`()
BEGIN
SET @xml = '<items><item>
        <value columntype="0">Single Line Text_01</value>
    <value columntype="1">Single Line Text_12341</value>
    <value columntype="2">Single Line Text_21</value>
    <value columntype="3">Single Line Text_31</value>
    <value columntype="4">Single Line Text_41</value>
    </item>
</items>';
SELECT @columntype, ExtractValue(@xml, 'items/item/value[items/item/value/@columntype=0]');    
END $$
DELIMITER ;

我正在处理简单的Spring Batch Job.当我启动作业时,它在无限循环中运行.它不会停止.根据我的调度时间,它应该每10秒运行一次.但是当工作开始时它并没有停止.它只是分别从阅读器,处理器和写入器中保留打印系统.我正在与读者,处理器和作家创造工作.我正在通过注释进行所有配置.不是xml.

这是批量配置

@Configuration
@EnableBatchProcessing
@EnableScheduling
public class BatchJobConfig {

    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    @Autowired
    private SimpleJobLauncher jobLauncher;

    @Scheduled(cron="*/10 * * * * *")
    public void perform() throws Exception 
    {
        Job job = job(step1());
        JobParameters jobParameters = new JobParameters();
        jobLauncher.run(job, jobParameters);        
    }

    @Bean
    public Step step1() 
    {
        return stepBuilderFactory.get("step1").<Person, Person> chunk(1)
                .reader(reader()).processor(processor()).writer(writer())
                .build();
    }

    @Bean
    public Job job(Step step1) throws Exception 
    {
        return jobBuilderFactory.get("job")
                .incrementer(new RunIdIncrementer()).flow(step1())
                .end().build();
    }

    @Bean
    public DataSource dataSource()
    {
        EmbeddedDatabaseBuilder embeddedDatabaseBuilder …

我有应用程序,我想使用jstl tag lib.

我有两个罐子JSTL.jar和standard.jar.我把两个放在我的WEB-INF/lib文件夹中.

我配置它web.xml就像

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

    <taglib>
        <taglib-uri>http://java.sun.com/jstl/fmt</taglib-uri>
        <taglib-location>/WEB-INF/fmt.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>http://java.sun.com/jstl/core</taglib-uri>
        <taglib-location>/WEB-INF/c.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>http://java.sun.com/jstl/sql</taglib-uri>
        <taglib-location>/WEB-INF/sql.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>http://java.sun.com/jstl/x</taglib-uri>
        <taglib-location>/WEB-INF/x.tld</taglib-location>
    </taglib>

    <servlet>
        <servlet-name>loadingServlet</servlet-name>
        <servlet-class>loadingServlet</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>loadingServlet</servlet-name>
        <url-pattern>/loadingServlet</url-pattern>
    </servlet-mapping>

     <welcome-file-list>
                <welcome-file>homepage.jsp</welcome-file>
    </welcome-file-list>

</web-app>

在页面上我使用以下代码

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

我仍然得到错误.喜欢

    INFO: Deploying web application directory ServletExample
13 Apr, 2012 4:00:31 PM org.apache.tomcat.util.digester.Digester startElement
SEVERE: Begin event threw exception
java.lang.IllegalArgumentException: taglib definition not …

目前我正在处理一个存储过程,其中我在另一个while循环下使用一个while循环.但我没有得到预期的结果.最外层的循环只是迭代一次.

我正在尝试下面的代码.

DELIMITER $$

DROP PROCEDURE IF EXISTS `First_Sp` $$
CREATE DEFINER=`root`@`localhost` PROCEDURE `First_Sp`()
BEGIN

  DECLARE first_while_start  INTEGER DEFAULT 1;
  DECLARE second_while_start INTEGER DEFAULT 1;
  DECLARE first_while_count  INTEGER DEFAULT 3;
  DECLARE second_while_count INTEGER DEFAULT 3;

  WHILE first_while_start < first_while_count
  DO
    WHILE second_while_start < second_while_count
    DO
      SELECT concat(first_while_start,' - ',second_while_start) as result;
      SET second_while_start = second_while_start + 1;
    END WHILE;
    SET first_while_start = first_while_start + 1;
  END WHILE;
END $$

DELIMITER ;  

结果:

mysql> call first_sp();
+--------+
| result |
+--------+ …

我有三个 JSF 2.0 Web 模块，我需要在会话过期时重定向到登录页面。

我已经尝试使用 a HttpSessionListener，它正在调用sessionDestroyed()事件方法，但我无法在那里转发/重定向请求。我认为这是因为没有HttpServletRequest和HttpServletResponse对象。

我也尝试过使用 a PhaseListener，但它会导致网络浏览器中出现“重定向过多”错误。

public class SessionListener implements PhaseListener {

    public PhaseId getPhaseId() {
        return PhaseId.RESTORE_VIEW;
    }

    public void beforePhase(PhaseEvent event) {
        if (!FacesContext.getCurrentInstance().isPostback()) {
            try {
                System.out.println("Session Destroyed");
                FacesContext.getCurrentInstance().getExternalContext().redirect("login.jsf");
            }
            catch (Exception e) {
                System.out.println("error" + e);
            }
        }
    }

    public void afterPhase(PhaseEvent event)  {
        try {
            System.out.println("Session Created");
        }
        catch (Exception e) {
            System.out.println("error" + e);
        }
    }

}

为什么这些尝试不起作用，我怎样才能最好地解决它？

如何获得组件的父Div ID.

我已经提到了这个链接,但它没有用.

jQuery通过类搜索获取元素的id

这是我的示例代码.

<html>
    <head>
        <script src="http://code.jquery.com/jquery-latest.min.js"></script>
        <script>
            function linkClickEvent()
            {
                alert ($(this).parent().attr('id')); //Gives Me Undefined
                alert($(this).closest('div').attr('id')); //Gives Me Undefined
                alert($(this).parent().attr('id')); //Gives Me Undefined
            }
        </script>
    </head>
    <body>
        <div id="container_1">
            <a href="#" onclick="linkClickEvent();" id="link_1">Container_1</a>
        </div>
        <div id="container_2">
            <a href="#" onclick="linkClickEvent();" id="link_2">Container_2</a>
        </div>
        <div id="container_3">
            <a href="#" onclick="linkClickEvent();" id="link_3">Container_3</a>
        </div>
    </body>
</html>