求助空指针异常但是方法体根本没进！求高手解答

Question

这个方法在进入OnionGamersResourceDao.getAllResource()的时候就抛出java.lang.NullPointerException    @Autowired
    private SecurityResourceDaoImp OnionGamersResourceDao;    private void loadResourceDefine() {
    
        resourceMap = new HashMap<String, Collection<ConfigAttribute>>();
        System.out.println("afdsfds");
       
        for(Resources item:OnionGamersResourceDao.getAllResource()){
resourceMap.put(item.getUrl(),listToCollection(item.getRole()));
}配置文件 <!--资源数据定义-->
<beans:bean id="OnionGamersPortalMetaDataSource" class="com.onionbbs.security.InvocationSecurityMetadataSource">
<beans:property name="OnionGamersResourceDao" ref="OnionGamersResourceDao"></beans:property>
</beans:bean>

<!-- 查询出所有的资源-->
<beans:bean id="OnionGamersResourceDao" class="com.onionbbs.security.dao.SecurityResourceDaoImp">

</beans:bean>
<beans:bean id="OnionGamersResourceService" class="com.onionbbs.security.service.SecurityResourceServiceImp">
     
</beans:bean>
Dao类package com.onionbbs.security.dao;import java.util.List;import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;import com.onionbbs.model.Resources;
import com.onionbbs.model.Role;/*实现securityResource获取所有的security资源权限并注入到security框架中*/
public class SecurityResourceDaoImp implements SecurityResourceDao{
@Autowired
private SessionFactory getsessionfactory;
public Session getSession(){
Session session=getsessionfactory.getCurrentSession();
return session;
}
public List<Resources> getAllResource() {
Session se=this.getSession();
String hql="from Resource";
List<Resources> listresource=se.createQuery(hql).list();
return listresource;
}
public List<Role> getRoleByResourceId(int id){
String hql="select r.id,r.name,r.desc from role r,role_resource rr where rr.id=r.id and rr.resource_id=?";
Session se=this.getSession();
List<Role> li=se.createQuery(hql).list();
return li;
}}这个是security的方法
如果我直接定义死了的话就不会报错private void loadResourceDefine() {
        resourceMap = new HashMap<String, Collection<ConfigAttribute>>();
        Collection<ConfigAttribute> atts = new ArrayList<ConfigAttribute>();
        ConfigAttribute ca = new SecurityConfig("ROLE_ADMIN");
        atts.add(ca);
        resourceMap.put("/index.jsp", atts);
        resourceMap.put("/i.jsp", atts);
    }

Answer 1

1)private SecurityResourceDaoImp OnionGamersResourceDao;
改为：private SecurityResourceDaoImp onionGamersResourceDao;
<beans:bean id="OnionGamersResourceDao" class="com.onionbbs.security.dao.SecurityResourceDaoImp">
改为：
<beans:bean id="onionGamersResourceDao" class="com.onionbbs.security.dao.SecurityResourceDaoImp">
2）添加
public void setOnionGamersResourceDao(SecurityResourceDao securityResourceDao ){
this.onionGamersResourceDao = securityResourceDao ;
}

Answer 2

哪个类呢？我注入应该没错吧！但是每次执行的时候进入构造方法就出错！
 for(Resources item:securityResourceService.getAllResources()){
         resourceMap.put(item.getUrl(), listRoleToCollection(item.getRole()));
        }
一进入这个循环就出错了securityResourceService.getAllResources()这个方法还没执行

Answer 3

如过进了securityResourceService.getAllResources()这个方法的话只能说里面的值是空的但是调试的时候连这个方法都不能进

Answer 4

还是重新贴次完整的代码吧！package com.onionbbs.security;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.SecurityConfig;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource;
import org.springframework.security.web.util.AntUrlPathMatcher;
import org.springframework.security.web.util.UrlMatcher;import com.OnionEntertainment.Security.Service.SecurityResourceServiceImp;
import com.onionbbs.model.Resources;
import com.onionbbs.model.Role;
public class InvocationSecurityMetadataSource
        implements FilterInvocationSecurityMetadataSource {    private UrlMatcher urlMatcher = new AntUrlPathMatcher();;
    private static Map<String, Collection<ConfigAttribute>> resourceMap = null;    public InvocationSecurityMetadataSource() {
        loadResourceDefine();
    }
    private SecurityResourceServiceImp securityResourceService;
    
    public void setSecurityResourceService(
SecurityResourceServiceImp securityResourceService) {
this.securityResourceService = securityResourceService;
}
private void loadResourceDefine() {
        resourceMap = new HashMap<String, Collection<ConfigAttribute>>();
        Collection<ConfigAttribute> atts = new ArrayList<ConfigAttribute>();
        for(Resources item:securityResourceService.getAllResources()){
         resourceMap.put(item.getUrl(), listRoleToCollection(item.getRole()));
        }
        //        ConfigAttribute ca = new SecurityConfig("ROLE_ADMIN");
//        atts.add(ca);
//        resourceMap.put("/index.jsp", atts);
//        resourceMap.put("/i.jsp", atts);
    }
public Collection<ConfigAttribute> listRoleToCollection(Set<Role> set){
List<ConfigAttribute> list=new ArrayList<ConfigAttribute>();
for(Role role:set){
list.add(new SecurityConfig(role.getName()));
}
return list;
}    public Collection<ConfigAttribute> getAttributes(Object object)
            throws IllegalArgumentException {
        String url = ((FilterInvocation)object).getRequestUrl();
        Iterator<String> ite = resourceMap.keySet().iterator();
        while (ite.hasNext()) {
            String resURL = ite.next();
            if (urlMatcher.pathMatchesUrl(url, resURL)) {
                return resourceMap.get(resURL);
            }
        }
        return null;
    }    public boolean supports(Class<?> clazz) {
        return true;
    }
    
    public Collection<ConfigAttribute> getAllConfigAttributes() {
        return null;
    }}<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/security"
xmlns:beans="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-3.0.xsd
                        http://www.springframework.org/schema/security 
                        http://www.springframework.org/schema/security/spring-security-3.0.xsd">
<!--
一个自定义的filter，必须包含authenticationManager,accessDecisionManager,securityMetadataSource三个属性，
我们的所有控制将在这三个类中实现
-->
<beans:bean id="SecurityFilter"
class="com.onionbbs.security.FilterSecurityInterceptor">
<beans:property name="authenticationManager" ref="authenticationManager" />
<beans:property name="accessDecisionManager" ref="GamerAccessDecisionManager" />
<beans:property name="securityMetadataSource" ref="GamersMetaDataSource" />
</beans:bean>


<http auto-config="true" access-denied-page="/">
<intercept-url pattern="/login.jsp" access="IS_AUTHENTICATED_ANONYMOUSLY" />
<intercept-url pattern="/index.jsp" access="ROLE_USER" />
<custom-filter ref="SecurityFilter" before="FILTER_SECURITY_INTERCEPTOR" />
<form-login login-page="/login.jsp"
authentication-failure-url="/login.jsp" default-target-url="/" />
</http>
<!-- 认证管理器，实现用户认证的入口，主要实现UserDetailsService接口即可 -->
<authentication-manager alias="authenticationManager">
<authentication-provider user-service-ref="UserDetailService"> <!--                <password-encoder hash="md5" />-->
</authentication-provider>
</authentication-manager>
<beans:bean id="UserDetailService" class="com.onionbbs.security.UserDetailService">

</beans:bean>

<!--security的访问决策器，主要决定用户是否有权限访问此资源-->
<beans:bean id="GamerAccessDecisionManager"
class="com.onionbbs.security.GamersAccessDecisionManager">
</beans:bean>
<!--资源数据定义-->
<beans:bean id="GamersMetaDataSource"
class="com.onionbbs.security.InvocationSecurityMetadataSource">
<beans:property name="securityResourceService" ref="securityResourcesServices"></beans:property>
</beans:bean>



<beans:bean id="securityResourceDao" class="com.OnionEntertainment.Security.Dao.SecurityResourceDaoImp">

</beans:bean>
<beans:bean id="securityResourcesServices" class="com.OnionEntertainment.Security.Service.SecurityResourceServiceImp">
   <beans:property name="securityResourcesDao" ref="securityResourceDao">    </beans:property>
</beans:bean>

<beans:bean id="securityUserDao" class="com.OnionEntertainment.Security.Dao.SecurityUserDaoImp">

</beans:bean>
<beans:bean id="securityUserService" class="com.OnionEntertainment.Security.Service.SecurityUserServiceImp">
<beans:property name="securityuserdao" ref="securityUserDao"></beans:property>
</beans:bean>
</beans:beans>

Answer 5

package com.OnionEntertainment.Security.Dao;import java.util.List;import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;import com.onionbbs.model.Resources;public class SecurityResourceDaoImp implements SecurityResourceDao{ @Autowired
private SessionFactory sessionfa;
public Session getSession(){
Session se=sessionfa.getCurrentSession();
return se;
}
public List<Resources> getAllResources() {
String hql="from resource";
Session se=this.getSession();
Query query=se.createQuery(hql);
List<Resources> resource=query.list();
return resource;
}}
package com.OnionEntertainment.Security.Service;import java.util.List;import com.OnionEntertainment.Security.Dao.SecurityResourceDaoImp;
import com.onionbbs.model.Resources;public class SecurityResourceServiceImp implements SecurityResourceService{
private SecurityResourceDaoImp securityResourcesDao;
public void setSecurityResourcesDao(SecurityResourceDaoImp securityResourcesDao) {
this.securityResourcesDao = securityResourcesDao;
} public List<Resources> getAllResources() {

return securityResourcesDao.getAllResources();
}
}

Answer 6

这个应该是注入的问题，不用注释方法，在配置文件里配置试试，另外，单测下dao的方法，我把这个解决了但是不知道为什么还有空指针错误。