AOP 面向切面编程
下来先说 前置和后置增强
1 前置增强 需要一个类 实现
implements MethodBeforeAdvice 以下接口 ，并且实现接口中的方法
public class lasraop implements MethodBeforeAdvice { public void before(Method method, Object[] objects, Object o) throws Throwable { System.out.println("bengin"); } }
2 后置增强 需要一个类 实现
implements AfterReturningAdvice
以下接口 ，并且实现接口中的方法
public class fristaop implements AfterReturningAdvice { public void afterReturning(Object o, Method method, Object[] objects, Object o1) throws Throwable { System.out.println("日志记录"); } }
使用方法
applicationContext 文件中 在头文件 中 插入
xmlns:aop="http://www.springframework.org/schema/aop"
接下来为具体使用
<bean id="first" class="cn.study.aop.fristaop"></bean> <bean id="last" class="cn.study.aop.lasraop"></bean>
一个为前置增强 一个为后置增强 的 bean
<aop:config>
<aop:pointcut id="myPoint" expression="execution(* * ..serviers.*.*(..))"></aop:pointcut>
<aop:advisor advice-ref="last" pointcut-ref="myPoint"></aop:advisor>
<aop:advisor advice-ref="first" pointcut-ref="myPoint"></aop:advisor>
</aop:config>
AOP 标签 ， 使用增强 需要在 aop:config 节点中加入3个节点
aop:pointcut aop:advisor(一个为前，一个为后)
aop:pointcut 为使用增强的方法 ，这里路径说的是services下的所有方法，
aop:advisor 这个为使用增强的，advice为增强bean的id, pointcot-ref为上面使用方法的id
下面为展示的测试类
"C:Program FilesJavajdk1.8.0_91injava" -ea -Didea.launcher.port=7533 "-Didea.launcher.bin.path=D:mybajIntelliJ IDEA 2016.3.2in" -Dfile.encoding=UTF-8 -classpath "D:mybajIntelliJ IDEA 2016.3.2libidea_rt.jar;D:mybajIntelliJ IDEA 2016.3.2pluginsjunitlibjunit-rt.jar;C:Program FilesJavajdk1.8.0_91jrelibcharsets.jar;C:Program FilesJavajdk1.8.0_91jrelibdeploy.jar;C:Program FilesJavajdk1.8.0_91jrelibextaccess-bridge-64.jar;C:Program FilesJavajdk1.8.0_91jrelibextcldrdata.jar;C:Program FilesJavajdk1.8.0_91jrelibextdnsns.jar;C:Program FilesJavajdk1.8.0_91jrelibextjaccess.jar;C:Program FilesJavajdk1.8.0_91jrelibextjfxrt.jar;C:Program FilesJavajdk1.8.0_91jrelibextlocaledata.jar;C:Program FilesJavajdk1.8.0_91jrelibext ashorn.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunec.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunjce_provider.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunmscapi.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunpkcs11.jar;C:Program FilesJavajdk1.8.0_91jrelibextzipfs.jar;C:Program FilesJavajdk1.8.0_91jrelibjavaws.jar;C:Program FilesJavajdk1.8.0_91jrelibjce.jar;C:Program FilesJavajdk1.8.0_91jrelibjfr.jar;C:Program FilesJavajdk1.8.0_91jrelibjfxswt.jar;C:Program FilesJavajdk1.8.0_91jrelibjsse.jar;C:Program FilesJavajdk1.8.0_91jrelibmanagement-agent.jar;C:Program FilesJavajdk1.8.0_91jrelibplugin.jar;C:Program FilesJavajdk1.8.0_91jrelib esources.jar;C:Program FilesJavajdk1.8.0_91jrelib t.jar;F:Mybatis 1MyBatis arget est-classes;F:Mybatis 1MyBatis argetclasses;F:Mybatislibjavax.annotation.jar;F:Mybatislibjavax.jms.jar;F:Mybatislibjavax.persistence.jar;F:Mybatislibjavax.ejb.jar;F:Mybatislibjavax.transaction.jar;F:Mybatislibjavax.resource.jar;F:Mybatislibjavax.servlet.jar;F:Mybatislibjavax.servlet.jsp.jar;C:Users维吉的笔记本.m2 epositoryjunitjunit4.12junit-4.12.jar;C:Users维吉的笔记本.m2 epositoryorghamcresthamcrest-core1.3hamcrest-core-1.3.jar;C:Users维吉的笔记本.m2 epositorymysqlmysql-connector-java5.1.25mysql-connector-java-5.1.25.jar;C:Users维吉的笔记本.m2 epositoryjavaxservletjstl1.2jstl-1.2.jar;C:Users维吉的笔记本.m2 epositoryjavaeejavaee-api5javaee-api-5.jar;C:Users维吉的笔记本.m2 epositorycomalibabafastjson1.2.41fastjson-1.2.41.jar;C:Users维吉的笔记本.m2 epositoryorgmybatismybatis3.4.1mybatis-3.4.1.jar;C:Users维吉的笔记本.m2 epositoryorgslf4jslf4j-api1.7.21slf4j-api-1.7.21.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-core1.2.3logback-core-1.2.3.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-beans4.2.0.RELEASEspring-beans-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-core4.2.0.RELEASEspring-core-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositorycommons-loggingcommons-logging1.2commons-logging-1.2.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-context4.2.0.RELEASEspring-context-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-aop4.2.0.RELEASEspring-aop-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryaopallianceaopalliance1.0aopalliance-1.0.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-expression4.2.0.RELEASEspring-expression-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgaspectjaspectjweaver1.8.7aspectjweaver-1.8.7.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-classic1.2.3logback-classic-1.2.3.jar" com.intellij.rt.execution.application.AppMain com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 tt,tweo 三月 05, 2018 11:18:03 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@2280cdac: startup date [Mon Mar 05 23:18:03 CST 2018]; root of context hierarchy 三月 05, 2018 11:18:03 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions 信息: Loading XML bean definitions from class path resource [applicationContext02.xml] bengin 输出 日志记录 Process finished with exit code 0
这就是我前后置增强的输出
下面来说构造注入
通过构造和spring来为自己的属性赋值
创建一个普通类 就写 学生吧
名字 年龄 并且生成带参构造
public class Student { private String name; private Integer age; public void info(){ System.out.println(this.name); System.out.println(this.age); } public Student(String name, Integer age) { this.name = name; this.age = age; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public Student() { } }
配置文件中的输出
<bean id="stu" class="cn.study.dao.Student" scope="prototype">
<constructor-arg index="0" value="x某"></constructor-arg>
<constructor-arg index="1" value="18"></constructor-arg>
</bean>
1 对应带参构造的属性名顺序来赋值
2 index为下标，从零开始
3 Value为属性值
测试类入下
public void tweo(){ ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext02.xml"); Student jk= (Student)context.getBean("stu"); System.out.println(jk.getName()); System.out.println(jk.getAge()); }
下面 发结果
"C:Program FilesJavajdk1.8.0_91injava" -ea -Didea.launcher.port=7535 "-Didea.launcher.bin.path=D:mybajIntelliJ IDEA 2016.3.2in" -Dfile.encoding=UTF-8 -classpath "D:mybajIntelliJ IDEA 2016.3.2libidea_rt.jar;D:mybajIntelliJ IDEA 2016.3.2pluginsjunitlibjunit-rt.jar;C:Program FilesJavajdk1.8.0_91jrelibcharsets.jar;C:Program FilesJavajdk1.8.0_91jrelibdeploy.jar;C:Program FilesJavajdk1.8.0_91jrelibextaccess-bridge-64.jar;C:Program FilesJavajdk1.8.0_91jrelibextcldrdata.jar;C:Program FilesJavajdk1.8.0_91jrelibextdnsns.jar;C:Program FilesJavajdk1.8.0_91jrelibextjaccess.jar;C:Program FilesJavajdk1.8.0_91jrelibextjfxrt.jar;C:Program FilesJavajdk1.8.0_91jrelibextlocaledata.jar;C:Program FilesJavajdk1.8.0_91jrelibext ashorn.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunec.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunjce_provider.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunmscapi.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunpkcs11.jar;C:Program FilesJavajdk1.8.0_91jrelibextzipfs.jar;C:Program FilesJavajdk1.8.0_91jrelibjavaws.jar;C:Program FilesJavajdk1.8.0_91jrelibjce.jar;C:Program FilesJavajdk1.8.0_91jrelibjfr.jar;C:Program FilesJavajdk1.8.0_91jrelibjfxswt.jar;C:Program FilesJavajdk1.8.0_91jrelibjsse.jar;C:Program FilesJavajdk1.8.0_91jrelibmanagement-agent.jar;C:Program FilesJavajdk1.8.0_91jrelibplugin.jar;C:Program FilesJavajdk1.8.0_91jrelib esources.jar;C:Program FilesJavajdk1.8.0_91jrelib t.jar;F:Mybatis 1MyBatis arget est-classes;F:Mybatis 1MyBatis argetclasses;F:Mybatislibjavax.annotation.jar;F:Mybatislibjavax.jms.jar;F:Mybatislibjavax.persistence.jar;F:Mybatislibjavax.ejb.jar;F:Mybatislibjavax.transaction.jar;F:Mybatislibjavax.resource.jar;F:Mybatislibjavax.servlet.jar;F:Mybatislibjavax.servlet.jsp.jar;C:Users维吉的笔记本.m2 epositoryjunitjunit4.12junit-4.12.jar;C:Users维吉的笔记本.m2 epositoryorghamcresthamcrest-core1.3hamcrest-core-1.3.jar;C:Users维吉的笔记本.m2 epositorymysqlmysql-connector-java5.1.25mysql-connector-java-5.1.25.jar;C:Users维吉的笔记本.m2 epositoryjavaxservletjstl1.2jstl-1.2.jar;C:Users维吉的笔记本.m2 epositoryjavaeejavaee-api5javaee-api-5.jar;C:Users维吉的笔记本.m2 epositorycomalibabafastjson1.2.41fastjson-1.2.41.jar;C:Users维吉的笔记本.m2 epositoryorgmybatismybatis3.4.1mybatis-3.4.1.jar;C:Users维吉的笔记本.m2 epositoryorgslf4jslf4j-api1.7.21slf4j-api-1.7.21.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-core1.2.3logback-core-1.2.3.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-beans4.2.0.RELEASEspring-beans-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-core4.2.0.RELEASEspring-core-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositorycommons-loggingcommons-logging1.2commons-logging-1.2.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-context4.2.0.RELEASEspring-context-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-aop4.2.0.RELEASEspring-aop-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryaopallianceaopalliance1.0aopalliance-1.0.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-expression4.2.0.RELEASEspring-expression-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgaspectjaspectjweaver1.8.7aspectjweaver-1.8.7.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-classic1.2.3logback-classic-1.2.3.jar" com.intellij.rt.execution.application.AppMain com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 tt,tweo 三月 05, 2018 11:27:18 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@2280cdac: startup date [Mon Mar 05 23:27:18 CST 2018]; root of context hierarchy 三月 05, 2018 11:27:18 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions 信息: Loading XML bean definitions from class path resource [applicationContext02.xml] x某 18 Process finished with exit code 0
输出 在 配置文件中输出的值 ，这就是构造注入
下面来说 p命名空间注入
还是拿上面的学生类来说
用p标签来注入
首先 ，在头文件中加一个
xmlns:p="http://www.springframework.org/schema/p"
之后便能使用了，
写法如下
<bean id="su" class="cn.study.dao.Student" p:name="xx" p:age="18"></bean>
之后是测试类
public void tweo(){ ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext02.xml"); Student jk= (Student)context.getBean("su"); System.out.println(jk.getName()); System.out.println(jk.getAge()); }
控制台
"C:Program FilesJavajdk1.8.0_91injava" -ea -Didea.launcher.port=7536 "-Didea.launcher.bin.path=D:mybajIntelliJ IDEA 2016.3.2in" -Dfile.encoding=UTF-8 -classpath "D:mybajIntelliJ IDEA 2016.3.2libidea_rt.jar;D:mybajIntelliJ IDEA 2016.3.2pluginsjunitlibjunit-rt.jar;C:Program FilesJavajdk1.8.0_91jrelibcharsets.jar;C:Program FilesJavajdk1.8.0_91jrelibdeploy.jar;C:Program FilesJavajdk1.8.0_91jrelibextaccess-bridge-64.jar;C:Program FilesJavajdk1.8.0_91jrelibextcldrdata.jar;C:Program FilesJavajdk1.8.0_91jrelibextdnsns.jar;C:Program FilesJavajdk1.8.0_91jrelibextjaccess.jar;C:Program FilesJavajdk1.8.0_91jrelibextjfxrt.jar;C:Program FilesJavajdk1.8.0_91jrelibextlocaledata.jar;C:Program FilesJavajdk1.8.0_91jrelibext ashorn.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunec.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunjce_provider.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunmscapi.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunpkcs11.jar;C:Program FilesJavajdk1.8.0_91jrelibextzipfs.jar;C:Program FilesJavajdk1.8.0_91jrelibjavaws.jar;C:Program FilesJavajdk1.8.0_91jrelibjce.jar;C:Program FilesJavajdk1.8.0_91jrelibjfr.jar;C:Program FilesJavajdk1.8.0_91jrelibjfxswt.jar;C:Program FilesJavajdk1.8.0_91jrelibjsse.jar;C:Program FilesJavajdk1.8.0_91jrelibmanagement-agent.jar;C:Program FilesJavajdk1.8.0_91jrelibplugin.jar;C:Program FilesJavajdk1.8.0_91jrelib esources.jar;C:Program FilesJavajdk1.8.0_91jrelib t.jar;F:Mybatis 1MyBatis arget est-classes;F:Mybatis 1MyBatis argetclasses;F:Mybatislibjavax.annotation.jar;F:Mybatislibjavax.jms.jar;F:Mybatislibjavax.persistence.jar;F:Mybatislibjavax.ejb.jar;F:Mybatislibjavax.transaction.jar;F:Mybatislibjavax.resource.jar;F:Mybatislibjavax.servlet.jar;F:Mybatislibjavax.servlet.jsp.jar;C:Users维吉的笔记本.m2 epositoryjunitjunit4.12junit-4.12.jar;C:Users维吉的笔记本.m2 epositoryorghamcresthamcrest-core1.3hamcrest-core-1.3.jar;C:Users维吉的笔记本.m2 epositorymysqlmysql-connector-java5.1.25mysql-connector-java-5.1.25.jar;C:Users维吉的笔记本.m2 epositoryjavaxservletjstl1.2jstl-1.2.jar;C:Users维吉的笔记本.m2 epositoryjavaeejavaee-api5javaee-api-5.jar;C:Users维吉的笔记本.m2 epositorycomalibabafastjson1.2.41fastjson-1.2.41.jar;C:Users维吉的笔记本.m2 epositoryorgmybatismybatis3.4.1mybatis-3.4.1.jar;C:Users维吉的笔记本.m2 epositoryorgslf4jslf4j-api1.7.21slf4j-api-1.7.21.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-core1.2.3logback-core-1.2.3.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-beans4.2.0.RELEASEspring-beans-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-core4.2.0.RELEASEspring-core-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositorycommons-loggingcommons-logging1.2commons-logging-1.2.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-context4.2.0.RELEASEspring-context-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-aop4.2.0.RELEASEspring-aop-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryaopallianceaopalliance1.0aopalliance-1.0.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-expression4.2.0.RELEASEspring-expression-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgaspectjaspectjweaver1.8.7aspectjweaver-1.8.7.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-classic1.2.3logback-classic-1.2.3.jar" com.intellij.rt.execution.application.AppMain com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 tt,tweo 三月 05, 2018 11:34:06 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@2280cdac: startup date [Mon Mar 05 23:34:06 CST 2018]; root of context hierarchy 三月 05, 2018 11:34:06 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions 信息: Loading XML bean definitions from class path resource [applicationContext02.xml] xx 18 Process finished with exit code 0
输出的值与在bean里的赋值一样
下面来说 集合属性的注入
还是先看 类
测试全为String类型 数组 List set Map 和 Properties
package cn.study.entity; import java.util.*; /** * Created by 维吉的笔记本 on 2018/3/5. */ public class Collcation { private String[] array; private List<String> list; private Set<String> set; private Map<String,String> map; private Properties properties; @Override public java.lang.String toString() { return "Collcation{" + "array=" + Arrays.toString(array) + ", list=" + list + ", set=" + set + ", map=" + map + ", properties=" + properties + '}'; } public String[] getArray() { return array; } public void setArray(String[] array) { this.array = array; } public List<String> getList() { return list; } public void setList(List<String> list) { this.list = list; } public Set<String> getSet() { return set; } public void setSet(Set<String> set) { this.set = set; } public Map<String, String> getMap() { return map; } public void setMap(Map<String, String> map) { this.map = map; } public Properties getProperties() { return properties; } public void setProperties(Properties properties) { this.properties = properties; } }
下面来说 具体的使用方法
<bean id="ms" class="cn.study.entity.Collcation">
<property name="array">
<array>
<value>哈哈1</value>
<value>哈哈2</value>
<value>哈哈3</value>
</array>
</property>
<property name="list">
<list>
<value>A先生</value>
<value>B先生</value>
<value>c先生</value>
</list>
</property>
<property name="set">
<set>
<value>老板</value>
<value>总裁</value>
<value>董事长</value>
</set>
</property>
<property name="map">
<map>
<entry key="a111">
<value>风景</value>
</entry>
<entry key="a222">
<value>山河</value>
</entry>
<entry key="a333">
<value>江河</value>
</entry>
</map>
</property>
<property name="properties">
<props>
<prop key="a1">11</prop>
<prop key="a2">22</prop>
<prop key="a3">33</prop>
</props>
</property>
</bean>
以上为赋值过程 ， 下面就直接输出吧 ， 这里赋值好像没有什么问题
接下来就是测试类了
public void ffo(){ ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext02.xml"); Collcation c= (Collcation)context.getBean("ms"); System.out.println(c); }
"C:Program FilesJavajdk1.8.0_91injava" -ea -Didea.launcher.port=7538 "-Didea.launcher.bin.path=D:mybajIntelliJ IDEA 2016.3.2in" -Dfile.encoding=UTF-8 -classpath "D:mybajIntelliJ IDEA 2016.3.2libidea_rt.jar;D:mybajIntelliJ IDEA 2016.3.2pluginsjunitlibjunit-rt.jar;C:Program FilesJavajdk1.8.0_91jrelibcharsets.jar;C:Program FilesJavajdk1.8.0_91jrelibdeploy.jar;C:Program FilesJavajdk1.8.0_91jrelibextaccess-bridge-64.jar;C:Program FilesJavajdk1.8.0_91jrelibextcldrdata.jar;C:Program FilesJavajdk1.8.0_91jrelibextdnsns.jar;C:Program FilesJavajdk1.8.0_91jrelibextjaccess.jar;C:Program FilesJavajdk1.8.0_91jrelibextjfxrt.jar;C:Program FilesJavajdk1.8.0_91jrelibextlocaledata.jar;C:Program FilesJavajdk1.8.0_91jrelibext ashorn.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunec.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunjce_provider.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunmscapi.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunpkcs11.jar;C:Program FilesJavajdk1.8.0_91jrelibextzipfs.jar;C:Program FilesJavajdk1.8.0_91jrelibjavaws.jar;C:Program FilesJavajdk1.8.0_91jrelibjce.jar;C:Program FilesJavajdk1.8.0_91jrelibjfr.jar;C:Program FilesJavajdk1.8.0_91jrelibjfxswt.jar;C:Program FilesJavajdk1.8.0_91jrelibjsse.jar;C:Program FilesJavajdk1.8.0_91jrelibmanagement-agent.jar;C:Program FilesJavajdk1.8.0_91jrelibplugin.jar;C:Program FilesJavajdk1.8.0_91jrelib esources.jar;C:Program FilesJavajdk1.8.0_91jrelib t.jar;F:Mybatis 1MyBatis arget est-classes;F:Mybatis 1MyBatis argetclasses;F:Mybatislibjavax.annotation.jar;F:Mybatislibjavax.jms.jar;F:Mybatislibjavax.persistence.jar;F:Mybatislibjavax.ejb.jar;F:Mybatislibjavax.transaction.jar;F:Mybatislibjavax.resource.jar;F:Mybatislibjavax.servlet.jar;F:Mybatislibjavax.servlet.jsp.jar;C:Users维吉的笔记本.m2 epositoryjunitjunit4.12junit-4.12.jar;C:Users维吉的笔记本.m2 epositoryorghamcresthamcrest-core1.3hamcrest-core-1.3.jar;C:Users维吉的笔记本.m2 epositorymysqlmysql-connector-java5.1.25mysql-connector-java-5.1.25.jar;C:Users维吉的笔记本.m2 epositoryjavaxservletjstl1.2jstl-1.2.jar;C:Users维吉的笔记本.m2 epositoryjavaeejavaee-api5javaee-api-5.jar;C:Users维吉的笔记本.m2 epositorycomalibabafastjson1.2.41fastjson-1.2.41.jar;C:Users维吉的笔记本.m2 epositoryorgmybatismybatis3.4.1mybatis-3.4.1.jar;C:Users维吉的笔记本.m2 epositoryorgslf4jslf4j-api1.7.21slf4j-api-1.7.21.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-core1.2.3logback-core-1.2.3.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-beans4.2.0.RELEASEspring-beans-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-core4.2.0.RELEASEspring-core-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositorycommons-loggingcommons-logging1.2commons-logging-1.2.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-context4.2.0.RELEASEspring-context-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-aop4.2.0.RELEASEspring-aop-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryaopallianceaopalliance1.0aopalliance-1.0.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-expression4.2.0.RELEASEspring-expression-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgaspectjaspectjweaver1.8.7aspectjweaver-1.8.7.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-classic1.2.3logback-classic-1.2.3.jar" com.intellij.rt.execution.application.AppMain com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 tt,ffo 三月 05, 2018 11:45:34 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@2280cdac: startup date [Mon Mar 05 23:45:34 CST 2018]; root of context hierarchy 三月 05, 2018 11:45:34 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions 信息: Loading XML bean definitions from class path resource [applicationContext02.xml] Collcation{array=[哈哈1, 哈哈2, 哈哈3], list=[A先生, B先生, C先生], set=[老板, 总裁, 董事长], map={a111=风景, a222=山河, a333=江河}, properties={a2=22, a1=11, a3=33}} Process finished with exit code 0
以下为输出 会把我们在 bean里所赋的值给输出
下面介绍
单例:Singleton
多例:prototype
我们都知道，我们在使用配置的时候，都会new一下bean里，会实例化，上一篇博客已经说过了
使用方法 在 是 bean 里的 属性 加一个 scope，
scope 的值为上面的单例和双例
单例就是 用两遍相同的bean ，他只会实例化一次
<bean id="stu" class="cn.study.dao.Student" scope="singleton">
<constructor-arg index="0" value="x某"></constructor-arg>
<constructor-arg index="1" value="18"></constructor-arg>
</bean>
public void tweo(){ ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext02.xml"); // Helloseviec hh= (Helloseviec)context.getBean("service"); // // hh.some(); Student jk= (Student)context.getBean("stu"); Student j= (Student)context.getBean("stu"); System.out.println(jk); System.out.println(j); System.out.println(j.getName()); System.out.println(j.getAge()); System.out.println(jk.getName()); System.out.println(jk.getAge()); }
"C:Program FilesJavajdk1.8.0_91injava" -ea -Didea.launcher.port=7534 "-Didea.launcher.bin.path=D:mybajIntelliJ IDEA 2016.3.2in" -Dfile.encoding=UTF-8 -classpath "D:mybajIntelliJ IDEA 2016.3.2libidea_rt.jar;D:mybajIntelliJ IDEA 2016.3.2pluginsjunitlibjunit-rt.jar;C:Program FilesJavajdk1.8.0_91jrelibcharsets.jar;C:Program FilesJavajdk1.8.0_91jrelibdeploy.jar;C:Program FilesJavajdk1.8.0_91jrelibextaccess-bridge-64.jar;C:Program FilesJavajdk1.8.0_91jrelibextcldrdata.jar;C:Program FilesJavajdk1.8.0_91jrelibextdnsns.jar;C:Program FilesJavajdk1.8.0_91jrelibextjaccess.jar;C:Program FilesJavajdk1.8.0_91jrelibextjfxrt.jar;C:Program FilesJavajdk1.8.0_91jrelibextlocaledata.jar;C:Program FilesJavajdk1.8.0_91jrelibext ashorn.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunec.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunjce_provider.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunmscapi.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunpkcs11.jar;C:Program FilesJavajdk1.8.0_91jrelibextzipfs.jar;C:Program FilesJavajdk1.8.0_91jrelibjavaws.jar;C:Program FilesJavajdk1.8.0_91jrelibjce.jar;C:Program FilesJavajdk1.8.0_91jrelibjfr.jar;C:Program FilesJavajdk1.8.0_91jrelibjfxswt.jar;C:Program FilesJavajdk1.8.0_91jrelibjsse.jar;C:Program FilesJavajdk1.8.0_91jrelibmanagement-agent.jar;C:Program FilesJavajdk1.8.0_91jrelibplugin.jar;C:Program FilesJavajdk1.8.0_91jrelib esources.jar;C:Program FilesJavajdk1.8.0_91jrelib t.jar;F:Mybatis 1MyBatis arget est-classes;F:Mybatis 1MyBatis argetclasses;F:Mybatislibjavax.annotation.jar;F:Mybatislibjavax.jms.jar;F:Mybatislibjavax.persistence.jar;F:Mybatislibjavax.ejb.jar;F:Mybatislibjavax.transaction.jar;F:Mybatislibjavax.resource.jar;F:Mybatislibjavax.servlet.jar;F:Mybatislibjavax.servlet.jsp.jar;C:Users维吉的笔记本.m2 epositoryjunitjunit4.12junit-4.12.jar;C:Users维吉的笔记本.m2 epositoryorghamcresthamcrest-core1.3hamcrest-core-1.3.jar;C:Users维吉的笔记本.m2 epositorymysqlmysql-connector-java5.1.25mysql-connector-java-5.1.25.jar;C:Users维吉的笔记本.m2 epositoryjavaxservletjstl1.2jstl-1.2.jar;C:Users维吉的笔记本.m2 epositoryjavaeejavaee-api5javaee-api-5.jar;C:Users维吉的笔记本.m2 epositorycomalibabafastjson1.2.41fastjson-1.2.41.jar;C:Users维吉的笔记本.m2 epositoryorgmybatismybatis3.4.1mybatis-3.4.1.jar;C:Users维吉的笔记本.m2 epositoryorgslf4jslf4j-api1.7.21slf4j-api-1.7.21.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-core1.2.3logback-core-1.2.3.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-beans4.2.0.RELEASEspring-beans-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-core4.2.0.RELEASEspring-core-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositorycommons-loggingcommons-logging1.2commons-logging-1.2.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-context4.2.0.RELEASEspring-context-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-aop4.2.0.RELEASEspring-aop-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryaopallianceaopalliance1.0aopalliance-1.0.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-expression4.2.0.RELEASEspring-expression-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgaspectjaspectjweaver1.8.7aspectjweaver-1.8.7.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-classic1.2.3logback-classic-1.2.3.jar" com.intellij.rt.execution.application.AppMain com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 tt,tweo 三月 05, 2018 11:56:50 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@2280cdac: startup date [Mon Mar 05 23:56:50 CST 2018]; root of context hierarchy 三月 05, 2018 11:56:50 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions 信息: Loading XML bean definitions from class path resource [applicationContext02.xml] cn.study.dao.Student@4d9e68d0 cn.study.dao.Student@4d9e68d0 x某 18 x某 18 Process finished with exit code 0
两个相同的地址 ，改变scope ，为双例
<bean id="stu" class="cn.study.dao.Student" scope="prototype">
<constructor-arg index="0" value="x某"></constructor-arg>
<constructor-arg index="1" value="18"></constructor-arg>
</bean>
"C:Program FilesJavajdk1.8.0_91injava" -ea -Didea.launcher.port=7535 "-Didea.launcher.bin.path=D:mybajIntelliJ IDEA 2016.3.2in" -Dfile.encoding=UTF-8 -classpath "D:mybajIntelliJ IDEA 2016.3.2libidea_rt.jar;D:mybajIntelliJ IDEA 2016.3.2pluginsjunitlibjunit-rt.jar;C:Program FilesJavajdk1.8.0_91jrelibcharsets.jar;C:Program FilesJavajdk1.8.0_91jrelibdeploy.jar;C:Program FilesJavajdk1.8.0_91jrelibextaccess-bridge-64.jar;C:Program FilesJavajdk1.8.0_91jrelibextcldrdata.jar;C:Program FilesJavajdk1.8.0_91jrelibextdnsns.jar;C:Program FilesJavajdk1.8.0_91jrelibextjaccess.jar;C:Program FilesJavajdk1.8.0_91jrelibextjfxrt.jar;C:Program FilesJavajdk1.8.0_91jrelibextlocaledata.jar;C:Program FilesJavajdk1.8.0_91jrelibext ashorn.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunec.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunjce_provider.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunmscapi.jar;C:Program FilesJavajdk1.8.0_91jrelibextsunpkcs11.jar;C:Program FilesJavajdk1.8.0_91jrelibextzipfs.jar;C:Program FilesJavajdk1.8.0_91jrelibjavaws.jar;C:Program FilesJavajdk1.8.0_91jrelibjce.jar;C:Program FilesJavajdk1.8.0_91jrelibjfr.jar;C:Program FilesJavajdk1.8.0_91jrelibjfxswt.jar;C:Program FilesJavajdk1.8.0_91jrelibjsse.jar;C:Program FilesJavajdk1.8.0_91jrelibmanagement-agent.jar;C:Program FilesJavajdk1.8.0_91jrelibplugin.jar;C:Program FilesJavajdk1.8.0_91jrelib esources.jar;C:Program FilesJavajdk1.8.0_91jrelib t.jar;F:Mybatis 1MyBatis arget est-classes;F:Mybatis 1MyBatis argetclasses;F:Mybatislibjavax.annotation.jar;F:Mybatislibjavax.jms.jar;F:Mybatislibjavax.persistence.jar;F:Mybatislibjavax.ejb.jar;F:Mybatislibjavax.transaction.jar;F:Mybatislibjavax.resource.jar;F:Mybatislibjavax.servlet.jar;F:Mybatislibjavax.servlet.jsp.jar;C:Users维吉的笔记本.m2 epositoryjunitjunit4.12junit-4.12.jar;C:Users维吉的笔记本.m2 epositoryorghamcresthamcrest-core1.3hamcrest-core-1.3.jar;C:Users维吉的笔记本.m2 epositorymysqlmysql-connector-java5.1.25mysql-connector-java-5.1.25.jar;C:Users维吉的笔记本.m2 epositoryjavaxservletjstl1.2jstl-1.2.jar;C:Users维吉的笔记本.m2 epositoryjavaeejavaee-api5javaee-api-5.jar;C:Users维吉的笔记本.m2 epositorycomalibabafastjson1.2.41fastjson-1.2.41.jar;C:Users维吉的笔记本.m2 epositoryorgmybatismybatis3.4.1mybatis-3.4.1.jar;C:Users维吉的笔记本.m2 epositoryorgslf4jslf4j-api1.7.21slf4j-api-1.7.21.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-core1.2.3logback-core-1.2.3.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-beans4.2.0.RELEASEspring-beans-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-core4.2.0.RELEASEspring-core-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositorycommons-loggingcommons-logging1.2commons-logging-1.2.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-context4.2.0.RELEASEspring-context-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-aop4.2.0.RELEASEspring-aop-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryaopallianceaopalliance1.0aopalliance-1.0.jar;C:Users维吉的笔记本.m2 epositoryorgspringframeworkspring-expression4.2.0.RELEASEspring-expression-4.2.0.RELEASE.jar;C:Users维吉的笔记本.m2 epositoryorgaspectjaspectjweaver1.8.7aspectjweaver-1.8.7.jar;C:Users维吉的笔记本.m2 epositorychqoslogbacklogback-classic1.2.3logback-classic-1.2.3.jar" com.intellij.rt.execution.application.AppMain com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 tt,tweo 三月 05, 2018 11:59:26 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@2280cdac: startup date [Mon Mar 05 23:59:26 CST 2018]; root of context hierarchy 三月 05, 2018 11:59:26 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions 信息: Loading XML bean definitions from class path resource [applicationContext02.xml] cn.study.dao.Student@14dd9eb7 cn.study.dao.Student@52e6fdee x某 18 x某 18
两块不同的地址 ， 这就是单例和双例了