尽量使用 scope="singleton" ,不要使用prototype，因为对性能的影响较大

 

给集合类型注入值

Java中主要的集合有：map set list 数组

department类

1 package com.hsp.collection; 2  3 import java.util.List; 4 import java.util.Map; 5 import java.util.Set; 6  7 public class Department { 8      9     private String name;10     11     12     private String [] empName;13     private List
     
       empList;14     private Set
      
        empsets;15     private Map
       
         empMaps;16     17     public Map
        
          getEmpMaps() {18         return empMaps;19     }20     public void setEmpMaps(Map
         
           empMaps) {21         this.empMaps = empMaps;22     }23     public Set
          
            getEmpsets() {24 return empsets;25 }26 public void setEmpsets(Set
           
             empsets) {27 this.empsets = empsets;28 }29 public List
            
              getEmpList() {30 return empList;31 }32 public void setEmpList(List
             
               empList) {33 this.empList = empList;34 }35 public String getName() {36 return name;37 }38 public void setName(String name) {39 this.name = name;40 }41 42 public String[] getEmpName() {43 return empName;44 }45 public void setEmpName(String[] empName) {46 this.empName = empName;47 }48 49 }
             
            
           
          
         
        
       
      
     

employee类

1 package com.hsp.collection; 2  3 public class Employee { 4      5     private String name; 6     private int id; 7  8     public int getId() { 9         return id;10     }11 12     public void setId(int id) {13         this.id = id;14     }15 16     public String getName() {17         return name;18     }19 20     public void setName(String name) {21         this.name = name;22     }23 24 }

测试类

1 package com.hsp.collection; 2  3 import java.util.Iterator; 4 import java.util.Map; 5 import java.util.Map.Entry; 6  7 import javax.swing.text.html.parser.Entity; 8  9 import org.springframework.context.ApplicationContext;10 import org.springframework.context.support.ClassPathXmlApplicationContext;11 12 public class App1 {13 14     /**15      * @param args16      */17     public static void main(String[] args) {18         // TODO Auto-generated method stub19         ApplicationContext ac = new ClassPathXmlApplicationContext("com/hsp/collection/beans.xml");20         Department department = (Department) ac.getBean("department");21         System.out.println(department.getName());22         for (String emName:department.getEmpName()){23             System.out.println(emName);24         }25         26         System.out.println("********通过list集合取出数据*********");27         for(Employee e: department.getEmpList()){28             System.out.println("name"+e.getName()+" "+e.getId());29         }30         31         System.out.println("********通过set集合取出数据*********");32         for(Employee e: department.getEmpsets()){33             System.out.println("name"+e.getName()+" "+e.getId());34         }35         36         37         System.out.println("********通过map集合取出数据 迭代器方法*********");38         Map
     
       empmaps=department.getEmpMaps();39         Iterator it = empmaps.keySet().iterator();40         while (it.hasNext()) {41             String key = (String) it.next();42             Employee emp = empmaps.get(key);43             System.out.println("key="+key+" "+emp.getName());44             45         }46         47         System.out.println("********通过map集合取出数据 简洁方法*********");48         for(Entry 
      
        entry1:department.getEmpMaps().entrySet()){49             System.out.println(entry1.getKey()+" "+entry1.getValue().getName());50         }51     }52 53 }
      
     

beans.xml文件

1 
     
       2  3  4 
       5  6 
       7 
      
        8     
       
         9        
        
         张三
        10        
        
         李四
        11        
        
         王五
        12     
       13 
      14 15 
      16 
      
       17      
       
        18          
        19          
        20      
       21 
      22 23 
      24 
      
       25      
       
        26          
        27          
             28      
       29 
      30 31 
      32 
      
       33      
       37 
      38 
     39 40 41 
     
      42 
      43 
      44 
     45 
     
      46 
      47 
      48 
     

内部bean

<bean id="foo" class="…Foo">

        <property name="属性">

        <!--第一方法引用-->

        <ref  bean ="bean 对象名"/>

        <!--内部bean-->

        <bean>

                <property></property>

        </bean>

        </property>

</bean>

 

4、继承配置

student类

1 public class Student { 2      3     protected String name; 4     protected int age; 5      6      7     public String getName() { 8         return name; 9     }10     public void setName(String name) {11         this.name = name;12     }13     public int getAge() {14         return age;15     }16     public void setAge(int age) {17         this.age = age;18     }19     20 }

Gradate类

1 public class Gradate extends Student { 2      3     private String degree; 4  5     public String getDegree() { 6         return degree; 7     } 8  9     public void setDegree(String degree) {10         this.degree = degree;11     }12 13 }

测试类

1 public class App1 { 2      3     public static void main(String[] args){ 4         ApplicationContext ac = new ClassPathXmlApplicationContext("com/hsp/inherit/beans.xml"); 5          6         Gradate gradate = (Gradate) ac.getBean("gradate"); 7         System.out.println(gradate.getName()+" "+gradate.getAge()+" "+gradate.getDegree()); 8     } 9 10 }

beans.xml文件