Spring 的持久化实例（JDBC， JdbcTemplate、HibernateDaoSupport、JdbcDaoSupport、SqlSessionDaoSupport等）

其他 2018-05-06 22:45:00 阅读次数: 3

一、表（这里用mysql，数据库名为yiibai）

CREATE TABLE `customer` (
  `CUST_ID` int(10) UNSIGNED NOT NULL,
  `NAME` varchar(100) NOT NULL,
  `AGE` int(10) UNSIGNED NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
ALTER TABLE `customer`
  ADD PRIMARY KEY (`CUST_ID`);

二、不用JdbcTemplate的情况

表的实体类Customer

package com.yiibai.springjdbc.bean;

public class Customer {

	int custId;
	String name;
	int age;
	
	public Customer(int custId, String name, int age) {
		super();
		this.custId = custId;
		this.name = name;
		this.age = age;
	}
	public int getCustId() {
		return custId;
	}
	public void setCustId(int custId) {
		this.custId = custId;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	@Override
	public String toString() {
		return "Customer [custId=" + custId + ", name=" + name + ", age=" + age + "]";
	}
}

DAO接口

package com.yiibai.springjdbc.dao;

import java.util.List;
import com.yiibai.springjdbc.bean.Customer;

public interface CustomerDAO {
	public void insert(Customer customer);
	public Customer findByCustomerId(int custId);
	public List<Customer> queryCustomer() throws Exception ;
}

DAO实现（不用JdbcTemplate）

package com.yiibai.springjdbc.daoimpl;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

import javax.sql.DataSource;

import com.yiibai.springjdbc.bean.Customer;
import com.yiibai.springjdbc.dao.CustomerDAO;

public class CustomerImplDAO implements CustomerDAO {
	private DataSource dataSource;

	@Override
	public void insert(Customer customer) {
		// TODO 自动生成的方法存根
		String sql = "INSERT INTO customer " + "(CUST_ID, NAME, AGE) VALUES (?, ?, ?)";
		Connection conn = null;

		try {
			conn = dataSource.getConnection();
			PreparedStatement ps = conn.prepareStatement(sql);
			ps.setInt(1, customer.getCustId());
			ps.setString(2, customer.getName());
			ps.setInt(3, customer.getAge());
			ps.executeUpdate();
			ps.close();

		} catch (SQLException e) {
			throw new RuntimeException(e);

		} finally {
			if (conn != null) {
				try {
					conn.close();
				} catch (SQLException e) {
				}
			}
		}
	}

	@Override
	public Customer findByCustomerId(int custId) {
		// TODO 自动生成的方法存根
		String sql = "SELECT * FROM customer WHERE CUST_ID = ?";
		Connection conn = null;

		try {
			conn = dataSource.getConnection();
			PreparedStatement ps = conn.prepareStatement(sql);
			ps.setInt(1, custId);
			Customer customer = null;
			ResultSet rs = ps.executeQuery();
			if (rs.next()) {
				customer = new Customer(rs.getInt("CUST_ID"), rs.getString("NAME"), rs.getInt("Age"));
			}
			rs.close();
			ps.close();
			return customer;
		} catch (SQLException e) {
			throw new RuntimeException(e);
		} finally {
			if (conn != null) {
				try {
					conn.close();
				} catch (SQLException e) {
				}
			}
		}
	}

	public void setDataSource(DataSource dataSource) {
		this.dataSource = dataSource;
	}

	@Override
	public List<Customer> queryCustomer() throws Exception {
		// TODO 自动生成的方法存根
		Connection conn = dataSource.getConnection();
		String sql = "Select c.CUST_ID, c.NAME, c.AGE from customer c";
		System.out.println(sql);
		Statement smt = conn.createStatement();
		ResultSet rs = smt.executeQuery(sql);
		List<Customer> list = new ArrayList<Customer>();
	       while (rs.next()) {
	           int cID = rs.getInt("CUST_ID");
	           String cName = rs.getString("NAME");
	           int cAge = rs.getInt("AGE");
	           Customer cust = new Customer(cID, cName, cAge);
	           list.add(cust);
	       }
	       
		return list;
	}

}

配置文件spring-dao.xml  spring-datasource.xml  spring-module.xml都放置在（特别重要）包com.yiibai.springjdbc下面：

spring-datasource.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans.xsd">


   <bean id="dataSource"
       class="org.springframework.jdbc.datasource.DriverManagerDataSource">

       <property name="driverClassName" value="com.mysql.jdbc.Driver" />
       <property name="url" value="jdbc:mysql://localhost:3306/yiibai?useSSL=false" />
       <property name="username" value="your-user" />
       <property name="password" value="your-passwd" />
   </bean>
   
</beans>

也可以使用DBCP连接池来配置数据源(需要导入commons-dbcp-1.4.jar包)

   <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">        
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />       
    <property name="url" value="jdbc:mysql://localhost:3306/yiibai?useSSL=false" />       
    <property name="username" value="your-name" />       
    <property name="password" value="your-passwd" />       
   </bean>

这里需要修改用户密码来适应你的数据库环境

spring-dao.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="customerDAO" class="com.yiibai.springjdbc.daoimpl.CustomerImplDAO">
		<property name="dataSource" ref="dataSource" />
	</bean>

</beans>

spring-module.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans.xsd">
 
   <!-- Using Mysql datasource -->
   <import resource="spring-datasource.xml" />
   <import resource="spring-dao.xml" />
 
</beans>

测试（主）类

package com.yiibai.springjdbc;

import java.util.List;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.yiibai.springjdbc.bean.Customer;
import com.yiibai.springjdbc.dao.CustomerDAO;

public class CustTest {

	private static ApplicationContext ctx;

	public static void main(String[] args) throws Exception {
		ctx = new ClassPathXmlApplicationContext("com/yiibai/springjdbc/spring-module.xml");
        	 
            CustomerDAO customerDAO = (CustomerDAO) ctx.getBean("customerDAO");
            Customer customer = new Customer(1, "yiibai",29);
            customerDAO.insert(customer);

        	
            Customer customer1 = customerDAO.findByCustomerId(1);
            System.out.println(customer1);
            
            List<Customer> custList = customerDAO.queryCustomer();
            for(Customer cs : custList){
                System.out.println("Customer ID " + cs.getCustId());
                System.out.println("Customer Name " + cs.getName());
                System.out.println("Customer Age" + cs.getAge());
                System.out.println("----------------------------");
            }
	}

}

运行结果：表customer加了一条记录，并输出如下信息：

（执行前把表customer中id为1的记录删除，不然插入异常）

三、使用 JdbcTemplate、JdbcDaoSupport实现

Customer和DAO接口不变，主要变化是DAO实现：CustomerImplDAO类改为JdbcCustomerDAO

package com.yiibai.springjdbc.daoimpl;

import java.util.List;

import org.springframework.jdbc.core.support.JdbcDaoSupport;

import com.yiibai.springjdbc.bean.Customer;
import com.yiibai.springjdbc.bean.CustomerRowMapper;
import com.yiibai.springjdbc.dao.CustomerDAO;

public class JdbcCustomerDAO extends JdbcDaoSupport implements CustomerDAO {

	@Override
	public void insert(Customer customer) {
		// TODO 自动生成的方法存根
		String sql = "INSERT INTO customer " +
				"(CUST_ID, NAME, AGE) VALUES (?, ?, ?)";
					 
			getJdbcTemplate().update(sql, new Object[] { customer.getCustId(),
					customer.getName(),customer.getAge()  
			});
	}

	@Override
	public Customer findByCustomerId(int custId) {
		// TODO 自动生成的方法存根
		/*
		 * 	这种写法也可以	
 		String sql = "SELECT * FROM customer WHERE CUST_ID =  '"+custId+"' ";
		return getJdbcTemplate().queryForObject(sql,new CustomerRowMapper());
		*/
		String sql = "SELECT * FROM customer WHERE CUST_ID = ?";
		return getJdbcTemplate().queryForObject(sql,new Object[] { custId },new CustomerRowMapper());
	}

	@Override
	public List<Customer> queryCustomer() throws Exception {
		// TODO 自动生成的方法存根
		String sql = "SELECT * FROM customer";

		return getJdbcTemplate().query(sql, new CustomerRowMapper());
	}

}

需要说明2点：

1、本实现继承JdbcDaoSupport，而 JdbcDaoSupport定义了 JdbcTemplate和DataSource 属性，只需在配置文件中注入DataSource 即可，然后会创建jdbcTemplate的实例，不必像前面的实现CustomerImplDAO那样，需要显式定义一个DataSource成员变量。

2、这里出现了CustomerRowMapper类：本来应该这样写的queryForObject(sql,Customer.class);但Spring并不知道如何将结果转成Customer.class。所以需要写一个CustomerRowMapper 继承RowMapper接口 ,其代码如下：

package com.yiibai.springjdbc.bean;

import java.sql.ResultSet;
import java.sql.SQLException;

import org.springframework.jdbc.core.RowMapper;

public class CustomerRowMapper implements RowMapper<Customer> {

	@Override
	public Customer mapRow(ResultSet rs, int rowNum) throws SQLException {
		// TODO 自动生成的方法存根
		return new Customer(rs.getInt("CUST_ID"),rs.getString("NAME"),rs.getInt("AGE"));
	}

}

文件spring-dao.xml里bean的定义修改为（变化的是class）：

    <bean id="customerDAO" class="com.yiibai.springjdbc.daoimpl.JdbcCustomerDAO">
        <property name="dataSource" ref="dataSource" />
    </bean>

其他配置文件和主类都不变、运行结果少了Select c.CUST_ID, c.NAME, c.AGE from customer c
，这是因为CustomerImplDAO版本人为地插入一句 System.out.println(sql);以示和JDBC模板实现版本JdbcCustomerDAO的区别。
可以看出采用JDBC模板大大简化代码。

四、  HibernateTemplate、HibernateDaoSupport实现版本

CustomerImplDAO类改为HibCustomerDao

package com.yiibai.springjdbc.daoimpl;

import java.util.List;

import org.springframework.orm.hibernate4.support.HibernateDaoSupport;
import com.yiibai.springjdbc.bean.Customer;
import com.yiibai.springjdbc.dao.CustomerDAO;

public class HibCustomerDao extends HibernateDaoSupport implements CustomerDAO {

	@Override
	public void insert(Customer customer) {
		// TODO 自动生成的方法存根
		this.getHibernateTemplate().save(customer);
	}

	@Override
	public Customer findByCustomerId(int custId) {
		// TODO 自动生成的方法存根
		//或find("from Customer where CUST_ID = ?",custId).get(0);
		return (Customer) getHibernateTemplate().get(Customer.class, custId);
	}

	@Override
	public List<Customer> queryCustomer() throws Exception {
		// TODO 自动生成的方法存根
        return (List<Customer>) getHibernateTemplate().find("from com.yiibai.springjdbc.bean.Customer"); 	
        }

}

配置文件修改就比较复杂了：要配置SessionFactory、transactionManager、transactionInterceptor等。

，另外要在包com.yiibai.springjdbc.bean增加表对象Customer的Hibernate映射文件Customer.hbm.xml以供配置hibernate SessionFactory使用：

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
                                   "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.yiibai.springjdbc.bean">
	<class name="Customer" table="customer">
		<id name="custId" type="java.lang.Integer">
 			<column name="CUST_ID" />
			<generator class="native"/>
        </id>
		<property name="name" unique="true" type="java.lang.String">
	       <column name="NAME" />	
		</property>
		<property name="age" unique="true" type="java.lang.Integer">
	       <column name="AGE" />	
		</property>	
	</class>
</hibernate-mapping>

修改后的spring-dao.xml内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context" 
	xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans.xsd
          	http://www.springframework.org/schema/tx
        	http://www.springframework.org/schema/tx/spring-tx.xsd
        	http://www.springframework.org/schema/aop
       		http://www.springframework.org/schema/aop/spring-aop.xsd
        	http://www.springframework.org/schema/jee
        	http://www.springframework.org/schema/jee/spring-jee.xsd
        	http://www.springframework.org/schema/context
        	http://www.springframework.org/schema/context/spring-context.xsd
        	http://www.springframework.org/schema/util
        	http://www.springframework.org/schema/util/spring-util.xsd
        	http://www.springframework.org/schema/tool
        	http://www.springframework.org/schema/tool/spring-tool.xsd">

	
	<!-- 把数据源注入给Session工厂 -->
	<bean id="custsessionFactory"
		class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource1" />
		<property name="mappingResources">
			<list>
				<value>com/yiibai/springjdbc/bean/Customer.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">${hibernate.dialect}</prop>
				<prop key="hibernate.hbm2ddl.auto">update</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.generate_statistics">true</prop>
				<prop key="hibernate.current_session_context_class">org.springframework.orm.hibernate4.SpringSessionContext</prop>
			</props>
		</property>
	</bean>
	
	
   <!-- Transaction manager for a single Hibernate SessionFactory (alternative 
		to JTA) -->
	<bean id="transactionManager"
		class="org.springframework.orm.hibernate4.HibernateTransactionManager">
		<property name="sessionFactory" ref="custsessionFactory" />
	</bean>

	<!--define bean of transaction interceptor -->
	<bean id="transactionInterceptor"
		class="org.springframework.transaction.interceptor.TransactionInterceptor">
		<property name="transactionManager" ref="transactionManager" />
		<property name="transactionAttributes">
			<props>
				<prop key="delete*">PROPAGATION_REQUIRED</prop>
				<prop key="update*">PROPAGATION_REQUIRED</prop>
				<prop key="save*">PROPAGATION_REQUIRED,-Exception</prop>
				<prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="*">PROPAGATION_REQUIRED</prop>
			</props>
		</property>
	</bean>

	<bean
		class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
		<property name="beanNames">
			<list>
				<value>*Dao</value>
			</list>
		</property>
		<property name="interceptorNames">
			<list>
				<value>transactionInterceptor</value>
			</list>
		</property>
	</bean>
	<bean id="customerDAO" class="com.yiibai.springjdbc.daoimpl.HibCustomerDao">  
		<property name="sessionFactory" ref="custsessionFactory" />
    </bean>  

</beans>

如果仅配置SessionFactory、而不配置transactionManager、transactionInterceptor，查询没问题，而插入不行，会出现下面的异常：

Exception in thread "main" org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.

有没有办修改SessionFactory的设置解决这个问题，求高人指点。

hibernate配置也可以用注解方式（无需Customer.hbm.xml）：

修改Customer类如下( custId必须要改CUST_ID，和表格字段名完全一致):

package com.yiibai.springjdbc.bean;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name = "customer")
public class Customer {
    @Id
	int CUST_ID;
	String name;
	int age;
	
	public Customer() {
		super();
		// TODO 自动生成的构造函数存根
	}
	public Customer(int custId, String name, int age) {
		super();
		this.CUST_ID = custId;
		this.name = name;
		this.age = age;
	}
	public int getCustId() {
		return CUST_ID;
	}
	public void setCustId(int custId) {
		this.CUST_ID = custId;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	@Override
	public String toString() {
		return "Customer [custId=" + CUST_ID + ", name=" + name + ", age=" + age + "]";
	}
}

spring-dao.xml文件的custsessionFactory配置中

		<property name="mappingResources">
			<list>
				<value>com/yiibai/springjdbc/bean/Customer.hbm.xml</value>
			</list>
		</property>

改为：

 	<property name="annotatedClasses">
			<list>
				<value>com.yiibai.springjdbc.bean.Customer</value>
			</list>
	</property>

另外经实践.hbm.xml版本（注射方式则不会，我也没搞明白其中的道理）的CUST_ID不是根据insert(customer)传递过来参数的值，而是会根据数据库表customer当前的ID“指针”;比如传递过来的参数是Customer(1, "yiibai",29)，插入后有可能变(3, "yiibai",29)。

可用下面命令来复位ID“指针”


mysql> use yiibai;
mysql> ALTER TABLE customer AUTO_INCREMENT=0;

这样新插入的CUST_ID值就是:最后一条记录CUST_ID+1。

五、mybatis、SqlSessionDaoSupport版本

        为了简单起见，使用注解方式使用mybatis（和XML配置可以混用的，详见该文），重写了dao接口放在com.yiibai.springjdbc.mybatisdao包下，为保证主类代码不变原来的接口CustomerDAO继续使用。

package com.yiibai.springjdbc.mybatisdao;

import java.util.List;

import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;

import com.yiibai.springjdbc.bean.Customer;

public interface ICustomer {
    @Insert("insert into customer(CUST_ID,name,age) values(#{CUST_ID},#{name}, #{age})")
	public void insert(Customer customer);
    @Select("select * from customer where CUST_ID= #{CUST_ID}")
	public Customer findByCustomerId(int custId);
    @Select("select * from customer")
	public List<Customer> queryCustomer();
    @Delete("delete from customer where CUST_ID=#{CUST_ID}")
    public int deleteCustomerById(int id);
}

所有的sql操作由该接口完成，后面的DAO实现类MybatisCustImpDao，实际上仅仅调用该接口的方法：

package com.yiibai.springjdbc.daoimpl;

import java.util.List;

import org.mybatis.spring.support.SqlSessionDaoSupport;

import com.yiibai.springjdbc.bean.Customer;
import com.yiibai.springjdbc.dao.CustomerDAO;
import com.yiibai.springjdbc.mybatisdao.ICustomer;

public class MybatisCustImpDao extends SqlSessionDaoSupport implements CustomerDAO {

	@Override
	public void insert(Customer customer) {
		// TODO 自动生成的方法存根
		this.getSqlSession().getMapper(ICustomer.class).insert(customer);;
	}

	@Override
	public Customer findByCustomerId(int custId) {
		// TODO 自动生成的方法存根
		return this.getSqlSession().getMapper(ICustomer.class).findByCustomerId(custId);
	}

	@Override
	public List<Customer> queryCustomer() throws Exception {
		// TODO 自动生成的方法存根
		return this.getSqlSession().getMapper(ICustomer.class).queryCustomer();
	}

}

mybatis的配置文件mybatiscust.xml放在com.yiibai.springjdbc下

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
	<typeAliases>
		<typeAlias alias="Customer" type="com.yiibai.springjdbc.bean.Customer" />
	</typeAliases>
	<environments default="development">
		<environment id="development">
			<transactionManager type="JDBC" />
			<dataSource type="POOLED">
				<property name="driver" value="com.mysql.jdbc.Driver" />
				<property name="url" value="jdbc:mysql://127.0.0.1:3306/yiibai?useSSL=false" />
				<property name="username" value="your-user" />
				<property name="password" value="your-passwd" />
			</dataSource>
		</environment>
	</environments>

	<mappers>
		<!-- XML的方式 注册映射配置文件-->
		<!-- <mapper resource="com/yiibai/springjdbc/bean/CustMybatis.xml" /> -->
     	<!--接口的方式  注册接口-->
     	<mapper class="com.yiibai.springjdbc.mybatisdao.ICustomer"/>
  	</mappers>
	
</configuration>

bean必须注入sqlSessionFactory或sqlSessionTemplate。还是在中spring-dao.xml配置：

	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="configLocation"
			value="classpath:com/yiibai/springjdbc/mybatiscust.xml" />
	</bean>
	<bean id="CustomerDao" class="com.yiibai.springjdbc.daoimpl.MybatisCustImpDao">
			<property name="sqlSessionFactory" ref="sqlSessionFactory" />
	</bean>

 或

	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="configLocation"
			value="classpath:com/yiibai/springjdbc/mybatiscust.xml" />
	</bean>
	<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
		<constructor-arg ref="sqlSessionFactory" />
	</bean>
	<bean id="CustomerDao" class="com.yiibai.springjdbc.daoimpl.MybatisCustImpDao">
			<property name="sqlSessionTemplate" ref="sqlSession" />
	</bean>

主程序还是不变。

参考：

Spring Mybatis实例SqlSessionDaoSupport混用xml配置和注解

HibernateTemplate、HibernateDaoSupport两种方法实现增删

Spring JdbcTemplate+JdbcDaoSupport实例

Spring与Dao-Jdbc模板实现增删改查

使用Jdbc Template的基本操作步骤

Spring+mybatis的一个简单例子

spring与mybatis三种整合方法MyBatis中

如何通过继承SqlSessionDaoSupport来编写DAO（一）

Spring进行面向切面编程的一个简单例子

项目的代码和依赖包都在这里，下后解压到eclipse的workspace导入选择import Porojects from File System or Archive。

猜你喜欢

转载自my.oschina.net/u/2245781/blog/1552110
今日推荐
火速冲上 GitHub 热榜 —— 开源编程语言、框架哪有这么可爱？
北京人形机器人创新中心发布全球首个纯电驱拟人奔跑的全尺寸人形机器人“天工”
LFOSSA 源来如此公开课 | 掌握云原生未来：CNCF 认证全面攻略与备考秘籍
国产云输入法——仅华为无云端数据上传安全问题
开源日报 | 工业开源项目OGG 1.0；姐姐，你要和我一起配置火狐吗；苹果AI遥遥落后？Fedora 40
开放签电子签章：停止新增，优化体验，前进更进（五一假期前工作）
开源日报 | 中学生开源前端动画引擎；全球首个Llama3 8B中文版开源模型；联想电脑恐出局；Linus讽刺AI炒作
周排行
浏览器对同一域名进行请求的最大并发连接数
React Hook之自定义Hook
【转】MyBatis缓存机制
-Java-泛型
自动化测试常用脚本-发送邮件
LeetCode#859: Buddy Strings
java、Python处理字符串
第二篇の博客
Hadoop伪分布式环境安装
SQL Server进阶（十一）临时表、表变量
每日归档
更多
2024-04-27(56)
2024-04-26(39)
2024-04-25(22)
2024-04-24(36)
2024-04-23(26)
2024-04-22(39)
2024-04-21(0)
2024-04-20(6)
2024-04-19(5)
2024-04-18(0)

代码天地 © 2018 codetd.com

境外服务器   最新电视剧2022