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Commit 7cbf224

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Spring Acceso a datos con JdbcTemplate
Usando la clase JdbcTemplate para facilitar el trabajo de acceso a datos.
1 parent 593acfe commit 7cbf224

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<?xml version="1.0" encoding="UTF-8"?>
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<project-shared-configuration>
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<!--
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This file contains additional configuration written by modules in the NetBeans IDE.
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The configuration is intended to be shared among all the users of project and
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therefore it is assumed to be part of version control checkout.
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Without this configuration present, some functionality in the IDE may be limited or fail altogether.
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-->
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<spring-data xmlns="http://www.netbeans.org/ns/spring-data/1">
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<config-files>
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<config-file>src/main/resources/springXMLConfig.xml</config-file>
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<config-file>src/main/resources/beans.xml</config-file>
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</config-files>
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<config-file-groups/>
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</spring-data>
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</project-shared-configuration>

‎tutorial_jdbc_template/nbactions.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<actions>
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<action>
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<actionName>run</actionName>
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<packagings>
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<packaging>jar</packaging>
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</packagings>
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<goals>
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<goal>process-classes</goal>
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<goal>org.codehaus.mojo:exec-maven-plugin:1.2.1:exec</goal>
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</goals>
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<properties>
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<exec.args>-classpath %classpath carmelo.spring.jdbc.SpringJDBC</exec.args>
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<exec.executable>java</exec.executable>
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</properties>
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</action>
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<action>
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<actionName>debug</actionName>
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<packagings>
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<packaging>jar</packaging>
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</packagings>
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<goals>
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<goal>process-classes</goal>
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<goal>org.codehaus.mojo:exec-maven-plugin:1.2.1:exec</goal>
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</goals>
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<properties>
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<exec.args>-Xdebug -Xrunjdwp:transport=dt_socket,server=n,address=${jpda.address} -classpath %classpath carmelo.spring.jdbc.SpringJDBC</exec.args>
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<exec.executable>java</exec.executable>
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<jpda.listen>true</jpda.listen>
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</properties>
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</action>
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<action>
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<actionName>profile</actionName>
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<packagings>
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<packaging>jar</packaging>
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</packagings>
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<goals>
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<goal>process-classes</goal>
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<goal>org.codehaus.mojo:exec-maven-plugin:1.2.1:exec</goal>
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</goals>
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<properties>
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<exec.args>-classpath %classpath carmelo.spring.jdbc.SpringJDBC</exec.args>
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<exec.executable>java</exec.executable>
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</properties>
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</action>
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</actions>

‎tutorial_jdbc_template/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>carmelo.spring</groupId>
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<artifactId>tutorial_jdbc_template</artifactId>
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<version>1.0</version>
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<packaging>jar</packaging>
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<dependencies>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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<version>4.3.6.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-jdbc</artifactId>
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<version>4.3.6.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>org.hsqldb</groupId>
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<artifactId>hsqldb</artifactId>
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<version>2.3.3</version>
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<scope>runtime</scope>
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</dependency>
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</dependencies>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.8</maven.compiler.source>
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<maven.compiler.target>1.8</maven.compiler.target>
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</properties>
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</project>
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package carmelo.spring.jdbc;
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import javax.sql.DataSource;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.jdbc.datasource.DriverManagerDataSource;
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@Configuration
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@ComponentScan(basePackages = "carmelo.spring.jdbc.dao")
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public class SpringConfiguration {
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@Bean
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public DataSource dataSource() {
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DriverManagerDataSource dataSource = new DriverManagerDataSource();
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dataSource.setDriverClassName("org.hsqldb.jdbcDriver");
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dataSource.setUrl("jdbc:hsqldb:hsql://localhost/");
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dataSource.setUsername("SA");
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dataSource.setPassword("");
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return dataSource;
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}
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}
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package carmelo.spring.jdbc;
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import java.sql.SQLException;
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import carmelo.spring.jdbc.dao.ProductDao;
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import carmelo.spring.jdbc.model.Product;
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import org.springframework.context.annotation.AnnotationConfigApplicationContext;
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import org.springframework.context.support.AbstractApplicationContext;
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public class SpringJDBC {
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public static void main(String[] args) throws SQLException {
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AbstractApplicationContext ctx
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= new AnnotationConfigApplicationContext(SpringConfiguration.class);
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ProductDao product = ctx.getBean(ProductDao.class);
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System.out.println("Cantidad de productos: " + product.cantidad());
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System.out.println("Producto con ID = 25: " + product.buscar(25));
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// crear un nuevo producto
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Product p0 = new Product(111, "Computer", 800.25);
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// insertar nuevo producto
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product.insertar(p0);
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// bucar el producto con ID = 35
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Product p1 = product.buscar(35);
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p1.setName("Server Computer");
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p1.setPrice(1001.25);
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// actualizar el producto con ID = 35
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product.actualizar(p1);
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// listar todos los productos
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product.todos().forEach(System.out::println);
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// eliminar el producto con ID = 111
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product.eliminar(p0.getId());
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ctx.close();
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}
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}
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package carmelo.spring.jdbc.dao;
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import carmelo.spring.jdbc.model.Product;
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import java.util.List;
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public interface ProductDao {
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List<Product> todos();
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Integer cantidad();
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Product buscar(Integer id);
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void insertar(Product product);
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void actualizar(Product product);
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void eliminar(Integer id);
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}
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package carmelo.spring.jdbc.dao;
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import carmelo.spring.jdbc.model.Product;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.List;
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import javax.sql.DataSource;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.dao.DuplicateKeyException;
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import org.springframework.jdbc.core.JdbcTemplate;
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import org.springframework.jdbc.core.RowMapper;
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import org.springframework.stereotype.Repository;
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@Repository
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public class ProductDaoImpl implements ProductDao {
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private JdbcTemplate jdbcTemplate;
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@Autowired
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public void setDataSource(DataSource dataSource) {
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this.jdbcTemplate = new JdbcTemplate(dataSource);
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}
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@Override
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public List<Product> todos() {
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String sql = "select * from product";
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return this.jdbcTemplate.query(sql, new RowMapper<Product>() {
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@Override
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public Product mapRow(ResultSet rs, int i) throws SQLException {
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Product p = new Product();
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p.setId(rs.getInt("ID"));
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p.setName(rs.getString("NAME"));
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p.setPrice(rs.getDouble("PRICE"));
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return p;
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}
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});
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}
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@Override
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public Integer cantidad() {
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String sql = "select count(*) from product";
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return this.jdbcTemplate.queryForObject(sql, Integer.class);
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}
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@Override
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public Product buscar(Integer id) {
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String sql = "select * from product where ID = ?";
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return this.jdbcTemplate.queryForObject(sql, new ProductRowMapper(), id);
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}
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@Override
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public void insertar(Product product) {
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String sql = "insert into product (ID, NAME, PRICE) values (?, ?, ?)";
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this.jdbcTemplate.update(sql,
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product.getId(),
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product.getName(),
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product.getPrice());
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}
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@Override
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public void actualizar(Product product) {
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String sql = "update product set NAME = ?, PRICE = ? where ID = ?";
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this.jdbcTemplate.update(sql,
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product.getName(),
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product.getPrice(),
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product.getId());
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}
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@Override
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public void eliminar(Integer id) {
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String sql = "delete from product where ID = ?";
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this.jdbcTemplate.update(sql, id);
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}
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class ProductRowMapper implements RowMapper<Product> {
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@Override
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public Product mapRow(ResultSet rs, int i) throws SQLException {
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Product p = new Product();
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p.setId(rs.getInt("ID"));
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p.setName(rs.getString("NAME"));
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p.setPrice(rs.getDouble("PRICE"));
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return p;
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}
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}
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}
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package carmelo.spring.jdbc.model;
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public class Product {
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private Integer id;
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private String name;
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private Double price;
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public Product() {
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}
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public Product(Integer id, String name, Double price) {
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this.id = id;
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this.name = name;
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this.price = price;
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}
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public Integer getId() {
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return id;
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}
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public void setId(Integer id) {
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this.id = id;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public Double getPrice() {
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return price;
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}
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public void setPrice(Double price) {
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this.price = price;
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}
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@Override
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public String toString() {
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return "Product{" + "id=" + id + ", name=" + name + ", price=" + price + '}';
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}
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}
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<!-- <?xml version="1.0" encoding="UTF-8"?> -->
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
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http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">
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<!-- <context:component-scan base-package="carmelo.spring.introduccion"/> -->
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<bean id="saludaService"
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init-method="initHello"
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destroy-method="destroyHello"
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class="carmelo.spring.introduccion.HelloServiceImpl"/>
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<bean id="one"
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class="carmelo.spring.introduccion.ClientService"
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factory-method="createInstance"/>
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</beans>

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