JdbcTemplate操作数据库

 <!--    数据库连接池-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
        <property name="url" value="jdbc:mysql:///数据库名"></property>
        <property name="username" value="用户名"></property>
        <property name="password" value="密码"></property>
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
    </bean>

<!--    创建JDBCtemplate对象，注入Datasource-->
    <bean id="jdbcTemplates" class="org.springframework.jdbc.core.JdbcTemplate">
<!--        注入dataSource-->
        <property name="dataSource" ref="dataSource"></property>
    </bean>

package com.sun.Spring.Dao.entity;

public class Book {
    private String userId;
    private String username;
    private String ustatus;
    public void setUserId(String userId) {
        this.userId = userId;
    }
    public void setUsername(String username) {
        this.username = username;
    public void setUstatus(String ustatus) {
        this.ustatus = ustatus;
    public String getUserId() {
        return userId;
    public String getUsername() {
        return username;
    public String getUstatus() {
        return ustatus;
}

@Repository
public class BookDaoImpl implements BookDao {
//    注入JdbcTemplate
    @Autowired
    private JdbcTemplate jdbcTemplate;
//添加的方法
    @Override
    public void add(Book book) {
//        创建sql语句
        String sql="insert into t_book values(?,?,?)";
//        可变参数放在数组里面
        Object[] args={book.getUserId(), book.getUsername(), book.getUstatus()};
//        调用方法实现,返回值是插入的记录数
        int update = jdbcTemplate.update(sql, args);
        System.out.println(update);

    }
}

package com.sun.Spring.Dao.Service;

import com.sun.Spring.Dao.Dao.BookDao;
import com.sun.Spring.Dao.entity.Book;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class BookService {
//    注入Dao
    @Autowired
    private BookDao bookDao;
//    添加的方法
    public void addBook(Book book){
        bookDao.add(book);
    }
}

package com.sun.Spring.Dao.Test;

import com.sun.Spring.Dao.Service.BookService;
import com.sun.Spring.Dao.entity.Book;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestJdbc {
    @Test
    public void Testupdate(){
        ApplicationContext context=
                new ClassPathXmlApplicationContext("bean1.xml");
        BookService bookService = context.getBean("bookService", BookService.class);

        Book book=new Book();
        book.setUserId("1");
        book.setUsername("Tom");
        book.setUstatus("F");
        bookService.addBook(book);
    }
}