The specific errors are as follows:

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type ‘com.thinkplatform.dao.UserLogDao’ available: expected at least 1 bean which qualifies as autowire candidate. Dependency 　　 annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

After investigation, it is found that adding @ repository in front of the implementation class of userlogdaoimpl is OK

package com.thinkplatform.dao.impl;
import java.io.Serializable;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.support.SqlSessionDaoSupport;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import com.thinkplatform.dao.UserLogDao;
import com.thinkplatform.entity.UserLog;


@Repository 
public class UserLogDaoImpl extends SqlSessionDaoSupport implements UserLogDao{

    public UserLogDaoImpl() {
        this.ns = "UserLogMapper";
    }
    @Autowired
    public void setSqlSessionfactory(SqlSessionFactory sqlSessionFactory) {
        super.setSqlSessionFactory(sqlSessionFactory);
    }
    
    private String ns;
    
    
    public String getNs(){
        return this.ns;
    }
    
    
    public void insert(UserLog userLog) {
        this.getSqlSession().insert(ns+".insert",userLog);
    }
    
    public void update(UserLog userLog) {
        this.getSqlSession().update(ns+".update",userLog);
    }

    
    public String get(Serializable id) {
        return this.getSqlSession().selectOne(ns+".get",id);
    }
    
}