java - JAR 文件中的类未 Autowiring

标签 java spring spring-mvc autowired

问题陈述

JAR 文件中的类未 Autowiring 。使用的spring版本是3.0

Classes Involved : InventoryController > ProductService > ProductManager > ProductDao

堆栈跟踪

org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.site.dao.ProductDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:949)
org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:818)
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:730)

模块

  • site-admin 是一个 webapp
  • 站点服务(jar 文件)
  • site-dao(jar 文件)

InventoryController 是管理 webapp 中的一个类，它依赖于 site-service-1.0.jar 中的 ProductService >(ProductService 和 ProductManager 在 site-service-1.0.jar 中)。

ProductService 依赖于 ProductManager 而后者又依赖于 site-dao-1.0.jar 中的 ProductDao >(ProductDao 位于 site-dao-1.0.jar 中。在运行时，ProductDao 不会 Autowiring )。

SimpleProductManager 引用了 ProductDao，但在运行时它没有被加载。堆栈跟踪在上面定义 需要关于可能是什么问题的帮助/建议

这个依赖涉及的类

InventoryController > ProductService > ProductManager > ProductDao

  • 库存 Controller 

    package com.site.admin.controllers;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.SessionAttributes;
import com.site.core.controller.ProductService;
import com.site.domain.catalog.Product;

@Controller
public class InventoryController {

    @RequestMapping(value="/addproduct", method=RequestMethod.POST )
    public String addProduct(@ModelAttribute Product product, Model model) {
        List<Product> products = new ArrayList<Product>();
        products.add(product);

        model.addAttribute("products", products);
        return "addproductsuccess";
    }

    @RequestMapping(value="/showproductform", method=RequestMethod.GET)
    public String getProductForm() {
        return "addproduct";
    }

    @InitBinder
    public void initBinder(WebDataBinder binder) {
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        dateFormat.setLenient(false);
        binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, false));
    }

    @Autowired
    private ProductService productService;

    public void setProductService(ProductService productService) {
        this.productService = productService;
    }
}

  • 产品服务

    package com.site.core.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import com.site.core.manager.ProductManager;
import com.site.domain.catalog.Product;

@Service
public class ProductService {

    @Autowired
    private ProductManager productManager;

    @RequestMapping(method=RequestMethod.GET, value="/products")
    @ResponseBody
    public List<Product> getProducts() {
        return productManager.getProducts();
    }

    @RequestMapping(method=RequestMethod.GET, value="/product/{productId}")
    @ResponseBody       
    public List<Product> getProductItems(@PathVariable int productId) {
        return productManager.getProductItems(productId);
    }

    @RequestMapping(method=RequestMethod.GET, value="/items")
    @ResponseBody
    public List<Product> getAllItems() {
        return productManager.getAllItems();
    }

    @RequestMapping(method=RequestMethod.GET, value="/items/{itemId}")
    @ResponseBody
    public Product getItem(@PathVariable int itemId) {
        return productManager.getItem(itemId);
    }

    public void setProductManager(ProductManager productManager) {
        this.productManager = productManager;
    }
}

  • SimpleProductManager

    package com.site.core.manager;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.site.dao.ProductDao;
import com.site.domain.catalog.Product;

@Component
public class SimpleProductManager implements ProductManager {

    @Autowired
    private ProductDao productDao;

    public List<Product> getProducts() {
        List<Product> products = productDao.getProducts();
        return products;
    }

    public Product getProduct(int productId) {
        Product product = productDao.getProduct(productId);
        return product;
    }

    public List<Product> getAllItems() {
        return productDao.getItems();
    }

    public List<Product> getProductItems(int productId) {
        return productDao.getItemsByProductId(productId);
    }

    public Product getItem(int itemId) {
        return productDao.getItem(itemId);
    }

    public void setProductDao(ProductDao productDao) {
        this.productDao = productDao;
    }
}

  • SimpleProductDaoImpl

    package com.site.dao;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.jdbc.core.support.JdbcDaoSupport;

import com.site.dao.data.extractor.ProductSkuExtractor;
import com.site.domain.catalog.Product;
import com.site.domain.catalog.Sku;

public class SimpleProductDaoImpl extends JdbcDaoSupport implements ProductDao {

    // methods and setter/getters

    private String insertProduct;
    private String selectActiveProducts;
    private String selectProduct;
    private String updateProduct;
    private String deleteProduct;
    private String selectAllItems;
    private String selectItemById;
    private String selectItemsByProductId;
}

  • 在 admin 模块(又名 webapp)中定义的应用程序上下文

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <mvc:annotation-driven />
    <context:annotation-config />
    <context:component-scan base-package="com.site" />

    <!-- **************************************************************************** -->
    <!-- ******************* Thymeleaf specific configuration *********************** -->
    <!-- **************************************************************************** -->

    <bean id="templateEngine" class="org.thymeleaf.spring3.SpringTemplateEngine">
        <property name="templateResolver" ref="templateResolver" />
    </bean>

    <bean id="templateResolver" class="org.thymeleaf.spring3.templateresolver.SpringResourceTemplateResolver">
        <property name="order" value="1"/>
        <property name="prefix" value="/templates/" />
        <property name="suffix" value=".html" />
        <property name="templateMode" value="HTML5" />
    </bean>

    <bean id="viewResolver" class="org.thymeleaf.spring3.view.ThymeleafViewResolver">
        <property name="templateEngine" ref="templateEngine"/>
        <property name="order" value="1" />
        <property name="viewNames" value="*" />
    </bean>

</beans>

  • 道 语境

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <bean id="storeDS" class="org.springframework.jndi.JndiObjectFactoryBean">
        <property name="jndiName" value="java:comp/env/jdbc/storeDS" />
    </bean>

    <bean id="simpleProductDao" class="com.site.dao.SimpleProductDaoImpl">
        <property name="dataSource" ref="storeDS" />
        <property name="insertProduct">
            <value><![CDATA[insert into product(name, label, show_on_site, type_id, start_date, end_date, fake_end_date, updated_by, updated) values(?,?,?,?,?,?,?,?,now())]]></value>
        </property>
        <property name="selectActiveProducts">
            <value><![CDATA[select p.product_id, p.name as product_name, p.label, p.start_date, p.end_date, p.fake_end_date, p.image, pt.name from product p, product_type pt, sku s where now() between p.start_date and p.end_date and p.show_on_site = 'Y' and p.type_id = pt.type_id and s.product_id = p.product_id group by product_id]]></value>
        </property>
        <property name="selectProduct">
            <value><![CDATA[select product_id, name, label, show_on_site, start_date, end_date from product where product_id = ? ]]></value>
        </property>
        <property name="updateProduct">
            <value><![CDATA[update product set name = ?, label = ?, show_on_site = ?, type_id = ?, start_date = ?, end_date = ? where product_id = ?]]></value>
        </property>
        <property name="deleteProduct">
            <value><![CDATA[delete from product where product_id = ?]]></value>
        </property>
        <property name="selectItemById">
            <value><![CDATA[select p.product_id, p.name as product_name, p.image as product_image, s.description, s.image as sku_image, s.retail_price, s.sale_price, s.quantity, s.name as item_name, s.sku_id, po.name as option_name, po.product_option_id as option_id, pov.name as option_value, pov.product_option_value_id as option_value_id from product p join sku s on p.product_id = s.product_id and s.sku_id = ? left join product_option_value pov on s.product_option_value_id = pov.product_option_value_id left join product_option po on pov.product_option_id = po.product_option_id]]></value>
        </property>
        <property name="selectAllItems">
            <value><![CDATA[select p.product_id, p.name as product_name, p.image as product_image, s.description, s.image as sku_image, s.retail_price, s.sale_price, s.quantity, s.name as item_name, s.sku_id, po.name as option_name, po.product_option_id as option_id, pov.name as option_value, pov.product_option_value_id as option_value_id from product p join sku s on p.product_id = s.product_id left join product_option_value pov on s.product_option_value_id = pov.product_option_value_id left join product_option po on pov.product_option_id = po.product_option_id]]></value>
        </property>
        <property name="selectItemsByProductId">
            <value><![CDATA[select p.product_id, p.name as product_name, p.image as product_image, s.description, s.image as sku_image, s.retail_price, s.sale_price, s.quantity, s.name as item_name, s.sku_id, po.name as option_name, po.product_option_id as option_id, pov.name as option_value, pov.product_option_value_id as option_value_id from product p join sku s on p.product_id = s.product_id and p.product_id = ? left join product_option_value pov on s.product_option_value_id = pov.product_option_value_id left join product_option po on pov.product_option_id = po.product_option_id]]></value>
        </property>     
    </bean>
</beans>

web.xml

<servlet> 
<servlet-name>dispatcherServlet</servlet-name> 
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-clas‌​s>
 <init-param> <param-name>contextConfigLocation</param-name> <param-    
  value>classpath*:/**/*spring-context.xml,classpath*:com/**/*spring-conte‌​xt.xml</param-    
  value> </init-param>
 <load-on-startup>1</load-on-startup>
 </servlet> 

 <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> 
 <url-pattern>/admin/*</url-pattern> 
 </servlet-mapping>

最佳答案

在您的服务实现中，您应该在注解中定义服务名称 我希望这会有所帮助

@Service("UserService")
public class UserServiceImpl implements UserService

在你的代码中你看到下面的代码

产品服务

@Service("ProductService")
public class ProductService {
.....

关于java - JAR 文件中的类未 Autowiring ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21530290/

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