解决SpringBoot2多线程无法注入的问题

1、情况描述

使用springboot2多线程，线程类无法实现自动注入需要的bean，解决思路，通过工具类获取需要的bean

如下

package com.ps.uzkefu.apps.ctilink.handler;

import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.ps.uzkefu.apps.callcenter.entity.CallRecord;
import com.ps.uzkefu.apps.callcenter.service.CallRecordService;
import com.ps.uzkefu.apps.ctilink.init.ApplicationContextProvider;
import com.ps.uzkefu.apps.ctilink.ommodel.CallCdr;
import com.ps.uzkefu.apps.ctilink.ommodel.Cdr;
import com.ps.uzkefu.apps.ctilink.rediskey.CdrType;
import com.ps.uzkefu.apps.ctilink.rediskey.EventType;
import com.ps.uzkefu.apps.ctilink.rediskey.RedisKeyPrefix;
import com.ps.uzkefu.apps.oms.account.entity.User;
import com.ps.uzkefu.apps.oms.account.service.UserService;
import com.ps.uzkefu.util.UUIDUtil;
import com.ps.uzkefu.utils.PhoneModel;
import com.ps.uzkefu.utils.PhoneUtils;
import org.apache.commons.lang.StringUtils;
import org.redisson.api.RBucket;
import org.redisson.api.RedissonClient;

import java.util.Date;
import java.util.Objects;

/**
 * Author:ZhuShangJin
 * Date:2018/6/26
 */
public class CdrHandler implements Runnable {

 public Cdr cdr;
 //无法自动注入
 public RedissonClient redissonClient;
 //无法自动注入
 public UserService userService;
 //无法自动注入
 public CallRecordService callRecordService;

 public CdrHandler() {
  //new的时候注入需要的bean
  this.redissonClient = ApplicationContextProvider.getBean(RedissonClient.class);
  this.userService = ApplicationContextProvider.getBean(UserService.class);
  this.callRecordService = ApplicationContextProvider.getBean(CallRecordService.class);
 }

 public RedissonClient getRedissonClient() {
  return redissonClient;
 }

 public void setRedissonClient(RedissonClient redissonClient) {
  this.redissonClient = redissonClient;
 }

 public Cdr getCdr() {
  return cdr;
 }

 public void setCdr(Cdr cdr) {

  this.cdr = cdr;
 }

 public UserService getUserService() {
  return userService;
 }

 public void setUserService(UserService userService) {
  this.userService = userService;
 }

 public CallRecordService getCallRecordService() {
  return callRecordService;
 }

 public void setCallRecordService(CallRecordService callRecordService) {
  this.callRecordService = callRecordService;
 }

 @Override
 public void run() {
  if (this.getCdr().getOuter() != null) {
   saveOuterCdr();
  } else if (this.getCdr().getVisitor() != null) {
   saveVistorCdr();
  }
 }

 private void saveOuterCdr() {
  // 外呼 通话结束
  CallCdr callCdr = null;
  RBucket<CallCdr> bucket = redissonClient.getBucket(RedisKeyPrefix.CALL_OUTER_CDR + this.getCdr().getOuter().getId() + "_" + cdr.getCpn());
  callCdr = bucket.get();
  callCdr.setRedisKey(RedisKeyPrefix.CALL_OUTER_CDR + this.getCdr().getOuter().getId() + "_" + cdr.getCpn());
  callCdr.setLastEvent(EventType.BYE);
  callCdr.setLastEventTime(new Date());
  callCdr.setTalkLength(Integer.parseInt(this.getCdr().getDuration()));
  callCdr.setTrunkNum(this.getCdr().getTrunkNumber());
  callCdr.setHangupTime(new Date());
  callCdr.setRecord(this.getCdr().getRecording());
  if (callCdr.getAnsweredTime() == null){
   callCdr.setCallTime(callCdr.getHangupTime());
  }else {
   long time = callCdr.getAnsweredTime().getTime() - callCdr.getRingLength()*1000;
   callCdr.setCallTime(new Date(time));
  }
  //todo 保存到数据库
  User user = userService.selectOne(new EntityWrapper<User>().eq("extension", callCdr.getExtensionNum() + ""));
  callCdr.setUserName(user.getUserName());
  callCdr.setCorpCode(user.getCorpCode());
  callCdr.setCreater(user.getId());
  callCdr.setId(UUIDUtil.genUUID());
  callCdr.setCreateTime(new Date());
  PhoneModel phoneModel = PhoneUtils.getPhoneModel(callCdr.getCustomerPhone());
  if (phoneModel != null) {
   callCdr.setCustomerCity(phoneModel.getCityName());
   callCdr.setCustomerProvince(phoneModel.getProvinceName());
  }
  callCdr.setCallId(System.currentTimeMillis() + "" + callCdr.getCallId());
  bucket.set(callCdr);
  CallRecord callRecord = callCdr;
  boolean result = callRecordService.insert(callRecord);
  if (result) {
   bucket.delete();
  }
 }

 private void saveVistorCdr() {
  CallCdr callCdr = null;
  RBucket<CallCdr> bucket = redissonClient.getBucket(RedisKeyPrefix.CALL_VISITOR_CDR + this.getCdr().getVisitor().getId() + "_" + cdr.getTrunkNumber());
  callCdr = bucket.get();
  callCdr.setRedisKey(RedisKeyPrefix.CALL_VISITOR_CDR + this.getCdr().getVisitor().getId() + "_" + cdr.getTrunkNumber());
  callCdr.setRecord(this.getCdr().getRecording());
  PhoneModel phoneModel = PhoneUtils.getPhoneModel(callCdr.getCustomerPhone());
  if (phoneModel != null) {
   callCdr.setCustomerCity(phoneModel.getCityName());
   callCdr.setCustomerProvince(phoneModel.getProvinceName());
  }
  callCdr.setCallId(System.currentTimeMillis() + "" + callCdr.getCallId());
  callCdr.setId(UUIDUtil.genUUID());
  //来电 通话结束 外部电话 呼入 接入分机的童虎记录
  if (Objects.equals(CdrType.IN, this.getCdr().getType()) && this.getCdr().getCdpn().length() == 5) {
   callCdr.setExtensionNum(Integer.parseInt(this.getCdr().getCdpn()));
   User user = userService.selectOne(new EntityWrapper<User>().eq("extension", callCdr.getExtensionNum() + ""));
   callCdr.setUserName(user.getUserName());
   callCdr.setCorpCode(user.getCorpCode());
   callCdr.setCreater(user.getId());
   if (Objects.equals(EventType.RING, callCdr.getLastEvent())) {
    if (StringUtils.isBlank(this.getCdr().getRecording())) {
     //用户在坐席未接来电时 未接来电无录音 挂机
     int ringLength = (int) ((new Date().getTime() - callCdr.getLastEventTime().getTime()) / 1000);
     callCdr.setRingLength(ringLength);
     callCdr.setTalkLength(0);
    } else {
     //特殊情况 坐席接听后立马挂掉
     callCdr.setTalkLength(Integer.parseInt(this.getCdr().getDuration()));
     callCdr.setRingLength(-1);
     callCdr.setLastEvent(CdrType.UNUSUAL);
    }
   } else {
    //正常情况
    callCdr.setTalkLength(Integer.parseInt(this.getCdr().getDuration()));
   }
  } else if (Objects.equals(CdrType.IN, this.getCdr().getType()) && this.getCdr().getCdpn().length() != 5) {
   //客服没接到
   callCdr.setExtensionNum(0);
   callCdr.setUserName("未接到");
   callCdr.setCorpCode(this.getCdr().getCdpn());
   callCdr.setCreater("未接到");
   callCdr.setTalkLength(0);
   int ringLength = (int) ((new Date().getTime() - callCdr.getCallTime().getTime())/1000);
   callCdr.setRingLength(ringLength);
  }
  callCdr.setCreateTime(new Date());
  callCdr.setHangupTime(new Date());
  bucket.set(callCdr);

  if (Objects.equals(CdrType.IN, this.getCdr().getType())
    && this.getCdr().getCdpn().length() == 5
    && Objects.equals(EventType.RING, callCdr.getLastEvent())
    && StringUtils.isNotBlank(this.cdr.getRecording())) {

  }else if(Objects.equals(CdrType.UNUSUAL,callCdr.getLastEvent())){

  }else {
   CallRecord callRecord = callCdr;
   boolean result = callRecordService.insert(callRecord);
   if (result) {
    bucket.delete();
   }
  }
 }
}

2、获取bean的工具类

package com.ps.uzkefu.apps.ctilink.init;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * Author:ZhuShangJin
 * Date:2018/7/3
 */
@Component
public class ApplicationContextProvider implements ApplicationContextAware {
 /**
  * 上下文对象实例
  */
 private static ApplicationContext applicationContext;

 @Override
 public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
  this.applicationContext = applicationContext;
 }

 /**
  * 获取applicationContext
  *
  * @return
  */
 public static ApplicationContext getApplicationContext() {
  return applicationContext;
 }

 /**
  * 通过name获取 Bean.
  *
  * @param name
  * @return
  */
 public static Object getBean(String name) {
  return getApplicationContext().getBean(name);
 }

 /**
  * 通过class获取Bean.
  *
  * @param clazz
  * @param <T>
  * @return
  */
 public static <T> T getBean(Class<T> clazz) {
  return getApplicationContext().getBean(clazz);
 }

 /**
  * 通过name,以及Clazz返回指定的Bean
  *
  * @param name
  * @param clazz
  * @param <T>
  * @return
  */
 public static <T> T getBean(String name, Class<T> clazz) {
  return getApplicationContext().getBean(name, clazz);
 }
}

3、通过工具类的getBean方法即可获取bean

补充知识：关于Spring/SpringBoot在静态工具类中注入Service的解决方案

前言今天博主将为大家分享:关于Spring/SpringBoot在静态工具类中注入Service的解决方案！不喜勿喷，如有异议欢迎讨论！

最近遇到了需要在工具类中注入Service，由于工具类中方法一般都是静态的，所以要求该属性也要是静态的（Service）。但是由于Spring/SpringBoot正常情况下不能支持注入静态属性（会报空指针异常）。主要原因在于：Spring的依赖注入实际上是依赖于Set方法进行注入值的，Spring是基于对象层面的依赖注入，而静态属性/静态变量实际上是属于类的。

解决方案：

给当前的工具类加上@Component，使其成为一个bean对象

声明一个静态的属性（加上注解@Autowired），一个非静态的属性。

声明一个返回值为void并且不能抛出异常的方法，在其中将非静态属性赋值给静态属性。该方法上加上注解@PostConstruct

这样就将service的值注入了进来。示例代码如下：

/**
*
*@Description: 关于Spring/SpringBoot在静态工具类中注入Service的解决方案
*@ClassName: XXUtils.java
*@author ChenYongJia
*@Date 2019年6月26日 晚上21:20
*@Email [e-mail]
*/

@Component
public class XXUtils {

@Autowired
private SpecialLogSevice sevice;

private static SpecialLogSevice specialLogSevice;

@PostConstruct
public void init() {
 specialLogSevice = sevice;
}

//下面的内容就省略了,需要调用specialLogSevice打点就行了

}

在上述代码中@PostConstruct是Java EE5规范之后，Servlet新增的两个影响servlet声明周期的注解之一，另外一个是@PreConstruct。这两个都可以用来修饰一个非静态的返回值为void的方法，并且该方法不能抛出异常。

被@PostConstruct注解修饰的方法会在服务器加载Servlet的时候运行，并且只会被服务器调用一次，类似于Servlet中的init方法。被该注解修饰的方法会在构造器执行之后，init方法执行之前执行。Spring中允许开发者在受理的Bean中去使用它，当IOC容器被实例化管理当前bean时，被该注解修饰的方法会执行，完成一些初始化的工作。

被PreConstruct注解修饰的方法会在服务器卸载Servlet的时候运行，类似于Servlet中的destroy方法。被该注解修饰的方法会在destroy方法执行之后，Servlet彻底卸载之前执行。

到这里：关于Spring/SpringBoot在静态工具类中注入Service的解决方案！分享完毕了，快去试试吧！希望大家多多支持服务器之家！

原文链接：https://blog.csdn.net/zsj777/article/details/80965081