Spring学习笔记1

 

Spring学习笔记1

 

 

 

学习内容

配置Spring

普通属性的注入

自定义属性编辑器

 配置Spring

核心包 %Spring%/dist/spring.jar 日志记录 %Spring%/lib/jarkata-commons/commons-logging.jar %Spring%/lib/log4j/log4j-1.2.14.jar 拷贝Spring配置文件 %Spring%/samples/jpetstore/war/WEB-INF/applicationContext.xml 拷贝Spring日志配置文件 samples/jpetstore/war/WEB-INF/log4j.properties 单元测试 %Spring%lib/junit/junit-4.4.jar 为MyEclipse添加XML文件模板 Window/Preferences/MyEclipse/Files and Editors/XML/XML Catalog 点击Add Location:   选择FileSystem 路径：Spring/dist/resources/spring-beans-2.5.xsd KeyType: Schema Location Key:  http://www.springframework.org/schema/beans/spring-beans-2.5.xsd

 

 

 

普通属性的注入

1.新建一个Bean文件   private String strValue; private int intValue; private List listValue; private String[] arrayValue; private Set setValue; private Map mapValue;   生成相应的get和set方法

2.建立配置文件 applicationContext-Injection_Attribute.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> <bean id="injection" class="bean.Injection"> <property name="strValue" value="fengda" /> <property name="intValue" value="123" /> <property name="listValue"> <list> <value>list1</value> <value>list2</value> </list> </property> <property name="arrayValue"> <list> <value>array1</value> <value>array2</value> </list> </property> <property name="setValue"> <set> <value>set1</value> <value>set2</value> </set> </property> <property name="mapValue"> <map> <entry key="k1" value="v1" /> <entry key="k2" value="v2"/> </map> </property> </bean> </beans>

3.新建单元测试类InjectionTest private BeanFactory factory; protected void setUp() throws Exception {     this.factory =  new ClassPathXmlApplicationContext(              "applicationContext-Injection_Attribute.xml" ); } public void testInjection(){              Injection injection = (Injection) this.factory.getBean( "injection" );     System.out.println( "strValue: " + injection.getStrValue() );     System.out.println( "intValue: " + injection.getIntValue() );     System.out.println( "listValue: " + injection.getListValue() );     System.out.println( "arrayValue: " + injection.getArrayValue() );     System.out.println( "mapValue: " + injection.getMapValue() );     System.out.println( "setValue" + injection.getSetValue() );      }

 

 

 

自定义属性编辑器

作用	将spring配置文件中的字符串转换成相应的对象进行注入
步骤	继承PropertyEditorSuppprt 重写：setAsTest(test) 将属性编辑器注册到spring中
实例	将字符串转换成时间格式输出

 1.

新建Bean类Injection_Date.java

private Date dateValue; 生成其get和set方法

 2.

配置文件信息applicationContext-Injection_Date.xml

<bean id="injection_Date" class="bean.Injection_Date">         <property name="dateValue">             <value>2008/11/01</value>         </property>     </bean>

 3.

新建类：UtilDatePropertyEditor 继承PropertyEditorSuppprt 重写：setAsTest(test)

private String format;     public String getFormat() {         return format;     }     public void setFormat(String format) {         this.format = format;     }     public void setAsText(String text) throws IllegalArgumentException {         SimpleDateFormat sdf = new SimpleDateFormat( format );         try {             Date d = sdf.parse(text);             this.setValue( d );         } catch (ParseException e) {             e.printStackTrace();         }     }

 4.

注册属性编辑器 注入到CustomEditorConfigurer的Map中，有set方法就可以注入

<bean id="util" class="org.springframework.beans.factory.config.CustomEditorConfigurer">         <property name="customEditors">             <map>                 <entry key="java.util.Date">                     <!--内部Bean-->                     <bean class="util.UtilDatePropertyEditor">                         <property name="format">                             <value>yyyy/MM/dd</value>                         </property>                     </bean>                 </entry>             </map>         </property>     </bean>

 5.

单元测试

private BeanFactory factory;          protected void setUp() throws Exception {         String[] xml = {  "applicationContext-util.xml" ,                  "applicationContext-Injection_Date.xml" };         this.factory = new ClassPathXmlApplicationContext( xml );         //构造方法支持字符串数组类型     }     public void testDate(){         Injection_Date date = (Injection_Date)this.factory.getBean( "injection_Date" );         System.out.println( "dateValue: " + date.getDateValue() );     }