public class User4 {
  private String username;

  public User4(String username) {
    this.username = username;
  }

  @Override
  public String toString() {
    return "User4{" +
        "username='" + username + '\'' +
        '}';
  }
}

<bean id="user4" class="org.sang.User4">
    <constructor-arg name="username" value="张三"/>
  </bean>

  @Test
  public void test4() {
    ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
    User4 user = (User4) context.getBean("user4");
    System.out.println(user);
  }

public class User5 {
  private String username;

  public void setUsername(String username) {
    this.username = username;
  }

  @Override
  public String toString() {
    return "User5{" +
        "username='" + username + '\'' +
        '}';
  }
}

<bean id="user5" class="org.sang.User5">
    <property name="username" value="lisi"/>
  </bean>

  @Test
  public void test5() {
    ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
    User5 user = (User5) context.getBean("user5");
    System.out.println(user);
  }

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

public class User6 {
  private String username;

  public void setUsername(String username) {
    this.username = username;
  }
  public void test() {
    System.out.println(username);
  }
}

<bean id="user6" class="org.sang.User6" p:username="张三">

public class UserDao {
  public void getData() {
    System.out.println("获取到数据啦!");
  }
}

我还有一个UserService:

public class UserService {
  private UserDao userDao;

  public void setUserDao(UserDao userDao) {
    this.userDao = userDao;
  }

//  public UserService(UserDao userDao) {
//    this.userDao = userDao;
//  }

  public void getData() {
    userDao.getData();
  }
}

<bean id="userDao" class="org.sang.UserDao"/>
  <bean id="userService" class="org.sang.UserService">
    <property name="userDao" ref="userDao"/>
    <!--<constructor-arg name="userDao" ref="userDao"/>-->
  </bean>

public class User7 {
  private String[] names;
  private List<String> list;
  private Map<String, String> map;
  private Properties properties;

  public void setNames(String[] names) {
    this.names = names;
  }

  public void setList(List<String> list) {
    this.list = list;
  }

  public void setMap(Map<String, String> map) {
    this.map = map;
  }

  public void setProperties(Properties properties) {
    this.properties = properties;
  }
  public void test() {
    StringBuffer sb1 = new StringBuffer();
    for (String name : names) {
      sb1.append(name).append(",");
    }
    StringBuffer sb2 = new StringBuffer();
    for (String s : list) {
      sb2.append(s).append(",");
    }
    StringBuffer sb3 = new StringBuffer();
    Set<String> keySet = map.keySet();
    for (String s : keySet) {
      sb3.append("key:" + s + ";value:" + map.get(s)).append(",");
    }
    System.out.println(sb1.toString());
    System.out.println(sb2.toString());
    System.out.println(sb3.toString());
    System.out.println(properties.getProperty("username"));
  }
}

<bean id="user7" class="org.sang.User7">
    <property name="names">
      <list>
        <value>张三</value>
        <value>李四</value>
        <value>王五</value>
      </list>
    </property>
    <property name="list">
      <list>
        <value>足球</value>
        <value>篮球</value>
        <value>乒乓球</value>
      </list>
    </property>

    <property name="map">
      <map>
        <entry key="username" value="张三"/>
        <entry key="password" value="123456"/>
      </map>
    </property>
    <property name="properties">
      <props>
        <prop key="username">赵六</prop>
      </props>
    </property>
  </bean>