Java静态代码块与spring注解注入的优先级问题

遇到这样一个问题，代码如下：

package com.wonders.stpt.organTree.util;

import java.util.HashMap;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

import com.wonders.stpt.organTree.service.TorganRelationService;

@Component("organTreeUtil")
public class OrganTreeUtil {
	private static HashMap receiversMap = null;
	private static HashMap configersMap = null;
	private static TorganRelationService torganRelationService;
	public static TorganRelationService getTorganRelationService() {
		return torganRelationService;
	}
	@Autowired(required=false)
	public void setTorganRelationService(
			@Qualifier("torganRelationService")TorganRelationService torganRelationService) {
		OrganTreeUtil.torganRelationService = torganRelationService;
	}
	
	static {
		init();
	}
	
	public static void init(){
		if(receiversMap==null){
			//receiversMap = new HashMap();
			//receiversMap = (HashMap) torganRelationService.getReceivers();
		}
		if(configersMap==null){
			//configersMap = new HashMap();
			//configersMap = (HashMap) torganRelationService.getConfigers();
		}
	}
	
	public static HashMap getReceiversMap(){
		synchronized(receiversMap){
			if(receiversMap==null){
				receiversMap = (HashMap) torganRelationService.getReceivers();
			}
		}
		return receiversMap;
	}
	
	public static HashMap getConfigersMap(){
		synchronized(configersMap){
			if(configersMap==null){
				configersMap = (HashMap) torganRelationService.getReceivers();
			}
		}
		return configersMap;
	}
	
	public static void refresh(){
		receiversMap = null;
		configersMap = null;
	}
	
}

可以看出，本来想在静态代码块中直接初始化map 的值，但运行后发现spring报空指针，导致不能生成bean，

而报空指针的行数就是 调用service的地方。之后觉得可能是 执行到static块时，spring还未注入。。。

修改后，运行成功。