Spring中常用配置

Spring中配置集合属性

编写两个java文件

package com.cloud.peizhi;public class Employee {private String name;private int id;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getId() {return id;}public void setId(int id) {this.id = id;}}

package com.cloud.peizhi;import java.util.List;import java.util.Map;import java.util.Properties;import java.util.Set;public class Department {private String name;private String [] empName;private List<Employee> empList;private Set<Employee> empSet;private Map<String, Employee> empMap;private Properties pp;public String getName() {return name;}public void setName(String name) {this.name = name;}public String[] getEmpName() {return empName;}public void setEmpName(String[] empName) {this.empName = empName;}public List<Employee> getEmpList() {return empList;}public void setEmpList(List<Employee> empList) {this.empList = empList;}public Set<Employee> getEmpSet() {return empSet;}public void setEmpSet(Set<Employee> empSet) {this.empSet = empSet;}public Map<String, Employee> getEmpMap() {return empMap;}public void setEmpMap(Map<String, Employee> empMap) {this.empMap = empMap;}public Properties getPp() {return pp;}public void setPp(Properties pp) {this.pp = pp;}}

编写配置文件

<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"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-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "><bean id="department" class="com.cloud.peizhi.Department"><property name="name" value="财务部"></property><!-- 给数组注入值 --><property name="empName"><list><value>empName1</value><value>empName2</value><value>empName3</value></list></property><!-- 给List注入值，可以存放相同的对象 --><property name="empList"><list><ref bean="emp1"/><ref bean="emp2"/><ref bean="emp1"/></list></property><!-- 配置Set属性，相同对象会被覆盖 --><property name="empSet"><set><ref bean="emp1"/><ref bean="emp2"/><ref bean="emp1"/></set></property><!-- 配置Map属性，key值相同，后面的覆盖前面的属性 --><property name="empMap"><map><entry key="1" value-ref="emp1"></entry><entry key="2" value-ref="emp2"></entry><entry key="2" value-ref="emp1"></entry></map></property><!-- 配置属性集合 --><property name="pp"><props><prop key="pp1">HELLO</prop><prop key="pp2">WORLD</prop></props></property></bean><!-- 配置Employee公共属性 --><bean id="emp1" class="com.cloud.peizhi.Employee"><property name="name"><value>Spring</value></property><property name="id"><value>1</value></property></bean><bean id="emp2" class="com.cloud.peizhi.Employee"><property name="name"><value>Summer</value></property><property name="id"><value>2</value></property></bean></beans>

编写测试文件

package com.cloud.peizhi;import java.util.Properties;import java.util.Map.Entry;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class MyTest {/** * 测试Spring中配置的常用属性 */public static void main(String[] args) {ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");Department department = (Department) ac.getBean("department");System.out.println(department.getName());System.out.println("--------------------->String数组");for(String empName:department.getEmpName()){System.out.println(empName);}System.out.println("--------------------->List集合");for(Employee e:department.getEmpList()){System.out.println(e.getName()+";"+e.getId());}System.out.println("--------------------->Set集合");for(Employee e:department.getEmpSet()){System.out.println(e.getName()+";"+e.getId());}System.out.println("--------------------->Map集合");for(Entry<String,Employee> entry:department.getEmpMap().entrySet()){System.out.println(entry.getKey()+";"+entry.getValue().getName());}System.out.println("--------------------->Properties");Properties pp = department.getPp();System.out.println(pp.get("pp1"));System.out.println(pp.get("pp2"));}}

配置构造函数属性

编写java类

package com.cloud.peizhi;public class Employee {private String name;private int id;public Employee(){System.out.println("无参构造函数！");}public Employee(String name){this.name = name;System.out.println("带参数构造函数！");}public Employee(String name,int id){  System.out.println("两个参数的构造函数");  this.name=name;  this.id=id;  }public String getName() {return name;}public void setName(String name) {this.name = name;}public int getId() {return id;}public void setId(int id) {this.id = id;}}

配置文件

<!-- 这里配置2个参数，所有调用2个参数的构造函数 --><bean id="employee" class="com.cloud.peizhi.Employee"><constructor-arg index="0" type="java.lang.String" value="Spring"></constructor-arg><constructor-arg index="1" type="int" value="23"></constructor-arg></bean>

测试文件

package com.cloud.peizhi;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class MyTest {/** * 测试Spring中配置的常用属性 */public static void main(String[] args) {ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");Employee employee = (Employee) ac.getBean("employee");System.out.println(employee.getName());}}

配置继承属性

编写java文件

package com.cloud.peizhi;public class Student {private String name;private int age;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}}

package com.cloud.peizhi;public class Gradate extends Student{private String degree;public String getDegree() {return degree;}public void setDegree(String degree) {this.degree = degree;}}

编写配置文件

<!-- 配置一个学生 --><bean id="student" class="com.cloud.peizhi.Student"><property name="name" value="Spring"></property><property name="age" value="22"></property></bean><!-- 配置Gradate --><bean id="gradate" parent="student" class="com.cloud.peizhi.Gradate"><property name="name" value="summer"></property><property name="degree" value="研究生"></property></bean>

编写测试类

package com.cloud.peizhi;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class MyTest {/** * 测试Spring中配置的常用属性 */public static void main(String[] args) {ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");Gradate gradate = (Gradate) ac.getBean("gradate");System.out.println(gradate.getName()+";"+gradate.getDegree());}}