使用JFinal 读取 MySql BLOB 字段数据时 出现异常：报错
后台代码：
String id = this.getPara("id");
Tpl tpl = Tpl.dao.findById(id);
Tpl_Txt tpl_Txt = Tpl_Txt.dao.findById(id);
//说明 tpl_content 是BLOB 类型 ；
String content ="";
try {
content = new String(tpl_Txt.getBytes("tpl_content"),"utf-8");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("===================================="+"/n"+content);
setAttr("tpl",tpl);
setAttr("tpl_context",content);
控制台信息：
====================================/n<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
//出现乱码
<title>HTML5 Canvas????Ч???????????ЧDEMO???</title>
<link rel="stylesheet" href="css/normalize.css">
<link rel="stylesheet" href="css/style.css" media="screen" type="text/css" />
</head>
<body>
<div style="text-align:center;clear:both;position:absolute;top:0;left:260px">
<script src="/gg_bd_ad_720x90.js" type="text/javascript"></script>
<script src="/follow.js" type="text/javascript"></script>
</div>
<canvas class="canvas"></canvas>
<div class="help">?</div>
<div class="ui">
<input class="ui-input" type="text" />
<span class="ui-return">?</span>
</div>
<div class="overlay">
<div class="tabs">
<div class="tabs-labels"><span class="tabs-label">Commands</span><span class="tabs-label">Info</span><span class="tabs-label">Share</span></div>
<div class="tabs-panels">
<ul class="tabs-panel commands">
<li class="commands-item"><span class="commands-item-title">Text</span><span class="commands-item-info" data-demo="Hello :)">Type anything</span><span class="commands-item-action">Demo</span></li>
<li class="commands-item"><span class="commands-item-title">Countdown</span><span class="commands-item-info" data-demo="#countdown 10">#countdown<span class="commands-item-mode">number</span></span><span class="commands-item-action">Demo</span></li>
<li class="commands-item"><span class="commands-item-title">Time</span><span class="commands-item-info" data-demo="#time">#time</span><span class="commands-item-action">Demo</span></li>
<li class="commands-item"><span class="commands-item-title">Rectangle</span><span class="commands-item-info" data-demo="#rectangle 30x15">#rectangle<span class="commands-item-mode">width x height</span></span><span class="commands-item-action">Demo</span></li>
<li class="commands-item"><span class="commands-item-title">Circle</span><span class="commands-item-info" data-demo="#circle 25">#circle<span class="commands-item-mode">diameter</span></span><span class="commands-item-action">Demo</span></li>
<li class="commands-item commands-item--gap"><span class="commands-item-title">Animate</span><span class="commands-item-info" data-demo="The time is|#time|#countdown 3|#icon thumbs-up"><span class="commands-item-mode">command1</span> |<span class="commands-item-mode">command2</span></span><span class="commands-item-action">Demo</span></li>
</ul>
<div class="tabs-panel ui-details">
<div class="ui-details-content">
<h1>Shape Shifter</h1>
<p>
An experiment by <a href="//www.kennethcachia.com" target="_blank">Kenneth Cachia<a/>.<br/>
<a href="//fortawesome.github.io/Font-Awesome/#icons-new" target="_blank">Font Awesome</a> is being used to render all #icons.
</p>
<br/><p>Visit <a href="http://www.kennethcachia.com/shape-shifter/?a=#icon thumbs-up" target="_blank">Shape Shifter</a> to use icons.</p>
</div>
</div>
<div class="tabs-panel ui-share">
<div class="ui-share-content">
<h1>Sharing</h1>
<p>Simply add <em>?a=</em> to the current URL to share any static or animated text. Examples:</p>
<p>
<a href="http://www.kennethcachia.com/shape-shifter?a=Hello" target="_blank">www.kennethcachia.com/shape-shifter?a=Hello</a><br/>
<a href="http://www.kennethcachia.com/shape-shifter?a=Hello|#countdown 3" target="_blank">www.kennethcachia.com/shape-shifter?a=Hello|#countdown 3</a>
</p>
</div>
</div>
</div>
</div>
</div>
<script src="js/index.js"></script>
</body>
</html>
返回页面信息出现：
<tr>
<td class="value" colspan="4"><input name="tpl_Txt.tpl_content" type="text"
id="name" class="easyui-textbox" style="width:780px;" value="${tpl_context}"
data-options="height:'auto',multiline:true" /></td>
</tr>
1.请高手们，帮看看，从数据库读取BLOB ，方法是否妥当？
2.望诸位高手，神级人物，教我 机种靠谱 的处理 BLOB ，CLOB 读取方法
3.在前台数据读取时候，出现如图所示，情况：
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