<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[forthrlock的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/forthrlock</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; forthrlock]]></copyright><item><title><![CDATA[System.out.println()打印时间类型数据Data的SimpleDateFormat方式]]></title><link>https://blog.youkuaiyun.com/forthrlock/article/details/106812976</link><guid>https://blog.youkuaiyun.com/forthrlock/article/details/106812976</guid><author>forthrlock</author><pubDate>Wed, 17 Jun 2020 16:56:46 +0800</pubDate><description><![CDATA[SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
System.out.println(sdf.format(new Data()));


]]></description><category></category></item><item><title><![CDATA[mybatis xml sql语句报错：大于号、小于号的转义写法 Error creating document instance]]></title><link>https://blog.youkuaiyun.com/forthrlock/article/details/106812320</link><guid>https://blog.youkuaiyun.com/forthrlock/article/details/106812320</guid><author>forthrlock</author><pubDate>Wed, 17 Jun 2020 16:39:12 +0800</pubDate><description><![CDATA[mybatis xml中是sql语句报错： Error creating document instance. Cause: org.xml.sax.SAXParseException: The
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最近项目折腾了老半天，找了资料才知道是这么回事。。。
因为语句中有一个小于号“]]></description><category></category></item><item><title><![CDATA[mysql下的 mybatis Error opening session. Cause: java.lang.NullPointerException异常的解决方法]]></title><link>https://blog.youkuaiyun.com/forthrlock/article/details/106810881</link><guid>https://blog.youkuaiyun.com/forthrlock/article/details/106810881</guid><author>forthrlock</author><pubDate>Wed, 17 Jun 2020 16:15:42 +0800</pubDate><description><![CDATA[Error opening session. Cause: java.lang.NullPointerException 出错
1.xml文件所在位置写错
private String resource=“SqlMapConfig.xml”;
这个是放在根目录(即项目主文件)下的config资源文件夹(Source Folder类型)内时的正确写法;
2.    environments default和 environment id不一致
需要如下一致的写法(因为我是用的mysql所以写的是"mysql"]]></description><category></category></item><item><title><![CDATA[(SSH)Hibernate 使用session.createSQLQuery()语句进行多表联立查询提取结果集并返回给jsp页面的具体方式]]></title><link>https://blog.youkuaiyun.com/forthrlock/article/details/106725001</link><guid>https://blog.youkuaiyun.com/forthrlock/article/details/106725001</guid><author>forthrlock</author><pubDate>Fri, 12 Jun 2020 23:32:32 +0800</pubDate><description><![CDATA[一.使用addScalar()方式
**具体思路:
（因博客内使用’&lt;’’&gt;'这个符号对时会自动隐藏,所以全部改成全角符号《》）
1.编写一个新class CjFindAllResult,内部含有所有需要查询的列名的同名属性,以及各属性的getter和setter函数,用来接收createSQLQuery()的结果集;
2.因为session.createSQLQuery()返回的是一个Object对象,无法自动存储进持久化对象类中,所以使用(List《Object》) session.crea]]></description><category></category></item><item><title><![CDATA[struts2中s:select标签的使用(默认值相关)]]></title><link>https://blog.youkuaiyun.com/forthrlock/article/details/106679614</link><guid>https://blog.youkuaiyun.com/forthrlock/article/details/106679614</guid><author>forthrlock</author><pubDate>Thu, 11 Jun 2020 07:58:08 +0800</pubDate><description><![CDATA[&lt;s:select name=“xs.zyb.id” list=“list” listKey=“id”
listValue=“zym”
headerKey="%{#xss.zyb.id}" headerValue="%{#xss.zyb.zym}" value="%{#xss.zyb.zym}" label="专业 "&gt;
&lt;/s:select&gt;
首先你要用到select,可以只使用 &lt;s:select&gt;标签,解释下这个标签属性:
list : 源数据 (可以在action]]></description><category></category></item><item><title><![CDATA[Hql parameter JPA-style positional JPA方式的hql语句设定变量值的方法]]></title><link>https://blog.youkuaiyun.com/forthrlock/article/details/106674786</link><guid>https://blog.youkuaiyun.com/forthrlock/article/details/106674786</guid><author>forthrlock</author><pubDate>Wed, 10 Jun 2020 21:01:03 +0800</pubDate><description><![CDATA[String hql="from Dlb u where u.xh=?0 and u,kl=?1";
	//hql语句内变量从单个?号改为?+数字,如: ?0 , ?1 , ?2 , ?3 等;(最低从数字0开始)
	Session session=getSession();
	Query query=session.createQuery(hql);
	query.setParameter("0",xh);
	query.setParameter("1",kl);
	//setParameter函数参数.]]></description><category></category></item><item><title><![CDATA[struts2 标签的使用 s:if]]></title><link>https://blog.youkuaiyun.com/forthrlock/article/details/106671099</link><guid>https://blog.youkuaiyun.com/forthrlock/article/details/106671099</guid><author>forthrlock</author><pubDate>Wed, 10 Jun 2020 17:20:13 +0800</pubDate><description><![CDATA[//设定变量名
&lt;s:set var=“test” value=“1”&gt;&lt;/s:set&gt;
//调用当前页面内的变量xs.xb,使用if语句与test进行等于的比较
&lt;s:label&gt;性别:&lt;s:if test="%{#xs.xb}"&gt;男&lt;/s:if&gt;
//可以额外再使用s:else来输出当条件不满足时的内容
&lt;s:else&gt;女&lt;/s:else&gt;
//关闭标签
&lt;/s:label&gt;

...]]></description><category></category></item><item><title><![CDATA[在s:textfield value 默认值 使用 request 中变量值的方法]]></title><link>https://blog.youkuaiyun.com/forthrlock/article/details/106670323</link><guid>https://blog.youkuaiyun.com/forthrlock/article/details/106670323</guid><author>forthrlock</author><pubDate>Wed, 10 Jun 2020 16:47:51 +0800</pubDate><description><![CDATA[1.可以直接调用request:
&lt;s:textfield name=“变量名1.变量1内的属性名” label=“标签名” value="%{#request.变量名2.变量2内的属性名}"&gt;
2.也可以先设定一个页面内的变量,再引用request内的变量:
&lt;s:set var=“变量名1” value="#request.变量名2"&gt;&lt;/s:set&gt;
&lt;s:textfield name=“变量名1.变量1内的属性名” label=“标签名” value="%{]]></description><category></category></item><item><title><![CDATA[MyEclipse连接数据库：ERROR: The server time zone value  is unrecognized or represents more than one time]]></title><link>https://blog.youkuaiyun.com/forthrlock/article/details/106574406</link><guid>https://blog.youkuaiyun.com/forthrlock/article/details/106574406</guid><author>forthrlock</author><pubDate>Fri, 05 Jun 2020 17:06:22 +0800</pubDate><description><![CDATA[MyEclipse连接数据库：ERROR: The server time zone value '�й�׼' is unrecognized or represents more than one time zonejie解决方案
提示系统时区出现错误，可以在mysql中执行命令：
set global time_zone=’+8:00’

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