问题

package com.yiibai.common;public class Customer
{private String name;private String address;private int age;public Customer(String name, String address, int age) {this.name = name;this.address = address;this.age = age;}public Customer(String name, int age, String address) {this.name = name;this.age = age;this.address = address;}//getter and setter methodspublic String toString(){return " name : " +name + "\n address : "+ address + "\n age : " + age;}}

<!--Spring-Customer.xml-->
<beans xmlns="http://www.springframework.org/schema/beans"
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-2.5.xsd"><bean id="CustomerBean" class="com.yiibai.common.Customer"><constructor-arg><value>yiibai</value></constructor-arg><constructor-arg><value>188</value></constructor-arg><constructor-arg><value>28</value></constructor-arg></bean></beans>

package com.yiibai.common;import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;public class App
{public static void main( String[] args ){ApplicationContext context = new ClassPathXmlApplicationContext(new String[] {"Spring-Customer.xml"});Customer cust = (Customer)context.getBean("CustomerBean");System.out.println(cust);}
}

输出结果

name : yiibaiaddress : 28age : 188

constructor arguments specified but no matching constructor
found in bean 'CustomerBean' (hint: specify index and/or
type arguments for simple parameters to avoid type ambiguities)

解决

<beans xmlns="http://www.springframework.org/schema/beans"
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-2.5.xsd"><bean id="CustomerBean" class="com.yiibai.common.Customer"><constructor-arg type="java.lang.String"><value>yiibai</value></constructor-arg><constructor-arg type="java.lang.String"><value>188</value></constructor-arg><constructor-arg type="int"><value>28</value></constructor-arg></bean></beans>

输出结果

name : yiibaiaddress : 188age : 28