Java 弹簧自动保存

我在jpa中使用spring，希望我的实体表自动保存，但它们没有

import java.util.Properties;

import javax.sql.DataSource;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaVendorAdapter;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
public class DatabaseConfig {

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
        em.setDataSource(dataSource());
        em.setPackagesToScan(new String[] { "com.project.models" });

        JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        em.setJpaVendorAdapter(vendorAdapter);

        Properties properties = new Properties();
        properties.setProperty("hibernate.hbm2ddl.auto", "update");
        properties.setProperty("hibernate.dialect", "org.hibernate.dialect.H2Dialect");
        em.setJpaProperties(properties);        
        return em;
    }

    @Bean
    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
        return new PersistenceExceptionTranslationPostProcessor();
    }

    @Bean
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("org.h2.jdbcx.JdbcDataSource");
        dataSource.setUrl("jdbc:h2:./store");
        dataSource.setUsername("root");
        return dataSource;
    }
}

当一个新的客户端连接时，它将在此类中处理，但我希望它在不调用repository.save方法的情况下保存它们。有什么帮助吗

import java.util.Map;

import javax.annotation.Resource;

import org.springframework.stereotype.Component;

import io.horizon.model.ClientModel;
import io.horizon.net.packet.Packet;
import io.horizon.net.packet.PacketHandler;
import io.netty.channel.ChannelHandlerContext;

@Component
public class ClientInfoPacketHandler implements PacketHandler {

    @Resource
    private Map<String, ClientModel> clients;

    @Override
    public void handlePacket(ChannelHandlerContext ctx, Packet packet) {
        ClientModel clientModel = new ClientModel(packet.getString());
        switch(packet.getString()) {
        case "init":
            clientModel.setStatus(1);
            break;
        }

        //This should be saved but it doesn't unless i use the clientRepository to call the save method.
    }

}

---

你的

ClientModel

类看起来像什么？对你来说是个坏消息：你必须手动持久化它。添加了ClientModel类。调用save方法是持久化实体的方法。我想知道你们不想使用它的方法…因为我想自动保存，一定有什么方法吗？你们的

ClientModel

类看起来像什么？坏消息：你们必须手动保存它。添加了ClientModel类。调用save方法是保存实体的方法。我想知道你们不想用它的方式…因为我想自动保存，一定有办法吗？

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Transient;

import lombok.Data;

@Data
@Entity
@Table(name = "clients")
public class ClientModel {

    @GeneratedValue
    private long id;

    private int status;

    @Id
    private String uid;

    public ClientModel() {      
    }

    public ClientModel(String uid) {        
        this.uid = uid;
    }   

}