错误：domain.SpeakerRecog.test上的java.lang.NullPointerException

SpeakerMapper为null， speakermapper.insertUserAndEnrollmentId(userid, enrollmentid)出错speakermapper.insertUserAndEnrollmentId(userid, enrollmentid)它抛出Java空指针异常。 数据源是在控制台中创建的。 我尝试添加诸如@Configuration ， implements类的注释，但仍无法正常工作。 我试图将数据插入localhost中数据库的表中。 它与线程“为什么我的Spring @Autowired字段为null为何”不同。 因为我没有创建新的构造函数，但是我遵循了那里给出的建议，但是它仍然无法正常工作

WebService Java文件：

package domain;

import javax.jws.WebMethod;

import javax.jws.WebService;

import mapper.Speakermapper;

import org.springframework.web.context.support.SpringBeanAutowiringSupport;

import org.springframework.beans.factory.annotation.Autowired;

@WebService(serviceName = "SpeakerRecognitionWS")

public class SpeakerRecog extends SpringBeanAutowiringSupport{

@Autowired

private Speakermapper speakermapper;

@WebMethod

public String test(){

String userid = "111";

String enrollmentid = "111";

try{

speakermapper.insertUserAndEnrollmentId(userid, enrollmentid);

}

catch (Exception e)

{

e.printStackTrace();

}

}

}

这是Speakermapper.java文件：

package mapper;

import org.apache.ibatis.annotations.Param;

public interface Speakermapper {

public void insertUserAndEnrollmentId(@Param("userid") String userid,

@Param("enrollmentid") String enrollmentid);

}

**这里是Speakermapper.xml：

Insert into SpeakerIds

(userid, enrollmentid)

Values (#{userid}, #{enrollmentid})

**这里是applicationContext.xml：此xml是否存在错误。 我不知道。

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

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.xsd

http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context-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/aop

http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">