spring备忘2

<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span style=""><span style="font-size: small;">轻量级框架没有侵入性,不依赖于容器,抛弃之后对程序没有影响,这是轻量级框架一个非常明显的特点。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span style="font-size: small;"><span lang="EN-US"><span style="font-family: Times New Roman;">Spring</span></span><span style="">无法将</span><span lang="EN-US"><span style="font-family: Times New Roman;">String</span></span><span style="">类型转换成</span><span lang="EN-US"><span style="font-family: Times New Roman;">Date</span></span><span style="">类型,必须自己写转换器。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span style=""><span style="font-size: small;">转换器的写法:</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;">import java.beans.PropertyEditorSupport;</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;">import java.text.ParseException;</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;">import java.text.SimpleDateFormat;</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;">import java.util.Date;</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;"></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;">/**</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span style="font-size: small;"><span lang="EN-US"><span style="font-family: Times New Roman;"><span style=""></span>* java.util.Date</span></span><span style="">属性编辑器</span><span lang="EN-US"><span style="font-family: Times New Roman;"> </span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""></span>* @author Administrator</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""></span>*</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""></span>*/</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;">public class UtilDatePropertyEditor extends PropertyEditorSupport {</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;"></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>private String format="yyyy-MM-dd";</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style=""><span style="font-size: small; font-family: Times New Roman;"> </span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>@Override</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>public void setAsText(String text) throws IllegalArgumentException {</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>System.out.println("UtilDatePropertyEditor.saveAsText() -- text=" + text);</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style=""><span style="font-size: small; font-family: Times New Roman;"> </span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>SimpleDateFormat sdf = new SimpleDateFormat(format);</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>try {</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>Date d = sdf.parse(text);</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>this.setValue(d);</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>} catch (ParseException e) {</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>e.printStackTrace();</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>}</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>}</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;"></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>public void setFormat(String format) {</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>this.format = format;</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>}</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;"></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;">}</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;"></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span style="font-size: small;"><span lang="EN-US"><span style="font-family: Times New Roman;">Spring</span></span><span style="">的构造函数支持多种消息格式</span><span lang="EN-US"><span style="font-family: Times New Roman;">,</span></span><span style="">下面是比较常用的一种。</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;"></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>protected void setUp() throws Exception {</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>BeanFactory factory = new ClassPathXmlApplicationContext("applicationContext-*.xml");<span style=""> </span></span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small;"><span style="font-family: Times New Roman;"><span style=""> </span>}</span></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;"></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span style="font-size: small;"><span lang="EN-US"><span style="font-family: Times New Roman;">Spring</span></span><span style="">降低配置量的方式</span></span></p>
<p class="MsoNormal" style=""><span style="" lang="EN-US"><span style=""><span style="font-family: Times New Roman;"><span style="font-size: small;">1,</span><span style='font: 7pt "Times New Roman";'> </span></span></span></span><span style=""><span style="font-size: small;">公共属性的注入。</span></span></p>
<p class="MsoNormal" style=""><span style="" lang="EN-US"><span style=""><span style="font-family: Times New Roman;"><span style="font-size: small;">2,</span><span style='font: 7pt "Times New Roman";'> </span></span></span></span><span style=""><span style="font-size: small;">根据名称自动装配。(在开发阶段推荐使用,但是在生产阶段和实施阶段还是要显性的把依赖关系表示清楚。)</span></span></p>
<p class="MsoNormal" style=""><span style="" lang="EN-US"><span style=""><span style="font-family: Times New Roman;"><span style="font-size: small;">3,</span><span style='font: 7pt "Times New Roman";'> </span></span></span></span><span style=""><span style="font-size: small;">根据类型自动装配。(在开发阶段推荐使用,但是在生产阶段和实施阶段还是要显性的把依赖关系表示清楚。)</span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;"></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-size: small; font-family: Times New Roman;"></span></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span style="font-size: small;"><span lang="EN-US"><span style="font-family: Times New Roman;">Spring</span></span><span style="">在默认情况下,工厂方法产生的</span><span lang="EN-US"><span style="font-family: Times New Roman;">bean</span></span><span style="">是</span><span lang="EN-US"><span style="font-family: Times New Roman;">singleton</span></span><span style="">的。也可以修改成</span><span lang="EN-US"><span style="font-family: Times New Roman;">prototype</span></span><span style="">的。</span></span></p>
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