greensure 2017-04-20 05:12 采纳率: 100%
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java spring注入异常问题，控制层无法获得数据库数据

spring-service.xml配置文件：
<?xml version="1.0" encoding="UTF-8"?>
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-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/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"
default-autowire="byName" default-lazy-init="false">

<!-- 扫描service包下所有使用注解的类型 -->
<context:component-scan base-package="cn.syy.service" />

<!-- 配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource" />
</bean>

<!-- 配置基于注解的声明事务，默认使用注解来管理事务行为 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<!-- 4-20 start-->
<bean id="springUtil" class="cn.syy.utils.SpringUtil" />

web.xml配置文件：
<?xml version="1.0" encoding="UTF-8"?>
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0"
metadata-complete="true">
<!-- 修改servlet版本为3.0 -->
<!-- 修改web.xml，配置jerseyServlet -->
ProductsRecordSys


springConfig
classpath:spring/spring-*.xml


jerseyServlet
org.glassfish.jersey.servlet.ServletContainer
<!-- com.sun.jersey.spi.spring.container.servlet.SpringServlet -->

<init-param>
    <param-name>javax.ws.rs.Application</param-name>
    <param-value>cn.syy.web.RestApplication</param-value>
</init-param>   
<init-param>
    <param-name>com.sun.jersey.config.feature.Redirect</param-name>
    <param-value>true</param-value>
</init-param>
<init-param>
    <param-name>jersey.config.servlet.filter.forwardOn404</param-name>
    <param-value>true</param-value>
</init-param>



jerseyServlet
/jsp/*

web控制层：
package cn.syy.web;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.xml.crypto.Data;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.glassfish.jersey.server.mvc.Viewable;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;

import cn.syy.entity.Products;
import cn.syy.service.ProductsService;
import cn.syy.utils.SpringUtil;

@Controller("ViewProductsJSP")
@Path("/view")
public class ViewProductsJSP {
static Log log = LogFactory.getLog("控制类ViewProductsJSP运行信息："+ViewProductsJSP.class);

//前提：Spring自动装配
@Autowired
private static ProductsService productsService  = (ProductsService)SpringUtil.getObject("productsService");
//  private ProductsService productsService;

//通过request请求转发方式从rest风格的请求跳转到jsp页面-传递request域参数
@GET
@Path("products")
@Produces(MediaType.TEXT_PLAIN_VALUE)
public List<Products> getProductsList(@Context HttpServletRequest request,@Context HttpServletResponse response) throws ServletException, IOException{
    log.info("request dispatcher...to jsp");
        //获得products数据并传入数据
        List<Products> list = productsService.getAll();
        log.info("产品信息"+list);
        request.setAttribute("products", list);
        //请求转发
        request.getRequestDispatcher("products.jsp").forward(request, response);
        return list;
    }
}

运行结果：

图片说明

root cause

A MultiException has 2 exceptions. They are:
1. java.lang.ExceptionInInitializerError
2. java.lang.IllegalStateException: Unable to perform operation: create on cn.syy.web.ViewProductsJSP

org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:394)
org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
org.glassfish.jersey.process.internal.RequestScope.findOrCreate(RequestScope.java:162)
org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2064)
org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:711)
org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:653)
org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:169)
org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:185)
org.glassfish.jersey.server.internal.routing.PushMethodHandlerRouter.apply(PushMethodHandlerRouter.java:74)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:109)

java.lang.ExceptionInInitializerError
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:526)
org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1129)
org.jvnet.hk2.internal.ClazzCreator.createMe(ClazzCreator.java:274)
org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:368)
org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
org.glassfish.jersey.process.internal.RequestScope.findOrCreate(RequestScope.java:162)
org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2064)
org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:711)
org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:653)
org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:169)
org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:185)

java.lang.NullPointerException
cn.syy.utils.SpringUtil.getObject(SpringUtil.java:28)
cn.syy.web.ViewProductsJSP.<clinit>(ViewProductsJSP.java:35)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:526)
org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1129)
org.jvnet.hk2.internal.ClazzCreator.createMe(ClazzCreator.java:274)
org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:368)
org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
org.glassfish.jersey.process.internal.RequestScope.findOrCreate(RequestScope.java:162)
org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2064)
org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:711)
org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:653)
org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:169)
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  • 我是一只小小黄 2017-04-20 06:02
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