NoSuchBeanDefinitionException儘管被定義

Question

我有beans.xml的定義：

<?xml version="1.0" encoding="UTF-8"?> 
<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.xsd"> 




    <bean id="Products" class="com.example.Products"> 
     <property name="products"> 
      <map key-type="java.lang.String" value-type="com.example.Product"> 
       <entry key="Coke"> 
        <bean class="com.example.Product"> 
         <property name="name" value="Coke"/> 
         <property name="price" value="2.0"/> 
        </bean> 
       </entry> 
       <entry key="Crisps"> 
        <bean class="com.example.Product"> 
         <property name="name" value="Crisps"/> 
         <property name="price" value="4.29"/> 
        </bean> 
       </entry> 
       <entry key="Snickers"> 
        <bean class="com.example.Product"> 
         <property name="name" value="Snickers"/> 
         <property name="price" value="1.69"/> 
        </bean> 
       </entry> 
       <entry key="Beer"> 
        <bean class="com.example.Product"> 
         <property name="name" value="Beer"/> 
         <property name="price" value="3.6"/> 
        </bean> 
       </entry> 

      </map> 

     </property> 

    </bean> 

    <bean id="coinVerter" class="com.example.CoinVerter" /> 


</beans> 

的問題是，產品獲得自動裝配相當不錯。

package com.example; 

import java.util.Collection; 
import java.util.HashMap; 
import java.util.Map; 

/** 
* Created by oneat on 11/5/16. 
*/ 
public class Products { 

    public Map<String, Product> products = new HashMap<>(); 

    Products() { 

    } 


    public final void add(Product p) { 
     products.put(p.name, p); 
    } 

    public void setProducts(Map<String, Product> products) { 
     this.products = products; 
    } 

    public Map<String, Product> getProducts() { 
     return products; 
    } 

    public Collection<Product> toArray(){ 
     return products.values(); 

    } 

} 

然而CoinVerter真的無法與自動裝配

說明：

場coinConverter在com.example.FuckingController所需類型的 'com.example.CoinVerter' 豆 可能不被發現。

操作：

考慮您的 配置中定義類型 'com.example.CoinVerter' 的豆。

這裏是他的SRC：

package com.example; 

import java.util.Arrays; 
import java.util.Collections; 
import java.util.LinkedList; 
import java.util.List; 

/** 
* Created by oneat on 11/6/16. 
*/ 
public class CoinVerter { 


    public CoinVerter() { 
    } 

    public CoinTainer ArrayToCoinTainer(Integer[] i) throws Exception { 
     CoinTainer ct = new CoinTainer(); 
     Integer[] conv = Arrays.copyOf(i, i.length); 
     for (int a = 0; a < conv.length; a++) { 
      while (conv[a]-- > 0) ct.add(new Coin(Coin.values[a])); 
     } 
     return ct; 
    } 


    public Integer[] CoinTainerToArray(CoinTainer ct) throws Exception { 
     List<Integer> li = new LinkedList<>(); 
     Coin[] co = Coin.returnAll(); 
     for (Coin c : co) { 
      li.add(Collections.frequency(ct.lc, c)); 
     } 
     return li.toArray(new Integer[0]); 
    } 

} 

任何想法爲什麼會發生？

自動裝配：

@Controller 
public class FuckingController { 

    @Autowired 
    CoinVerter coinConverter; 

    @Autowired 
    Products products; 






    @RequestMapping("/") 
    public String index(@RequestParam(value="yourcoins", required=false) Integer[] values, Model m) throws Exception{ 

     m.addAttribute("coins",Coin.returnAll()); 
     m.addAttribute("products", products.toArray()); 
     m.addAttribute("coinvalues", products.toArray()); 


     return "index"; 
    } 
} 

Answer 1

爲了使Spring的DispatcherServlet拿起並加載豆，你需要的beans.xml添加到下面的web.xml中：

<servlet> 
     <servlet-name>spring-web</servlet-name> 
     <servlet-class> 
         org.springframework.web.servlet.DispatcherServlet 
       </servlet-class> 
     <load-on-startup>1</load-on-startup> 
     <init-param> 
      <param-name>contextConfigLocation</param-name> 
      <param-value>/WEB-INF/Beans.xml</param-value> 
      <!-- Change this xml path correctly if NOT under WEB-INF --> 
     </init-param> 
    </servlet>