具体错误如下:

  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)}

  经过排查发现在UserLogDaoImpl的实现类前面加个@Repository 就可以了

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); 
    } 
     
    //命名空间 
    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); 
    } 
     
}

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