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Commit f891be0

Browse files
Subir archivos
Subir archivos de imagen y almacenarlas en una base de datos, se muestra como visualizar la imagen desde una página JSP.
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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/webapp/WEB-INF/springmvc-servlet.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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<properties xmlns="http://www.netbeans.org/ns/maven-properties-data/1">
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<!--
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Properties that influence various parts of the IDE, especially code formatting and the like.
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You can copy and paste the single properties, into the pom.xml file and the IDE will pick them up.
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That way multiple projects can share the same settings (useful for formatting rules for example).
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Any value defined here will override the pom.xml file value but is only applicable to the current project.
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-->
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<org-netbeans-modules-javascript2-requirejs.enabled>true</org-netbeans-modules-javascript2-requirejs.enabled>
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</properties>
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</project-shared-configuration>

‎tutorial_spring_upload/pom.xml

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_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_spring_upload</artifactId>
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<packaging>war</packaging>
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<version>1.0</version>
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<name>tutorial_spring_upload</name>
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<properties>
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<spring.version>4.3.7.RELEASE</spring.version>
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<failOnMissingWebXml>false</failOnMissingWebXml>
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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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<dependencies>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-webmvc</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-jdbc</artifactId>
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<version>${spring.version}</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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</dependency>
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>javax.servlet-api</artifactId>
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<version>3.1.0</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>jstl</artifactId>
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<version>1.2</version>
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</dependency>
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<!-- Uplaod Files -->
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<dependency>
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<groupId>commons-fileupload</groupId>
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<artifactId>commons-fileupload</artifactId>
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<version>1.3.1</version>
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</dependency>
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</dependencies>
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</project>
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package carmelo.spring.config;
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import java.io.IOException;
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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.web.multipart.MultipartResolver;
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import org.springframework.web.multipart.commons.CommonsMultipartResolver;
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import org.springframework.web.servlet.config.annotation.EnableWebMvc;
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import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
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import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
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@EnableWebMvc
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@Configuration
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@ComponentScan("carmelo.spring.controller")
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public class WebAppConfig extends WebMvcConfigurerAdapter {
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@Bean
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public MultipartResolver multipartResolver() throws IOException {
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CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
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multipartResolver.setMaxUploadSize((1024 * 1024) * 10);
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return multipartResolver;
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}
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@Override
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public void configureViewResolvers(ViewResolverRegistry registry) {
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registry.jsp("/WEB-INF/views/", ".jsp");
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}
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}
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package carmelo.spring.config;
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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.Configuration;
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import org.springframework.jdbc.core.JdbcTemplate;
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import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
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import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;
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@Configuration
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public class WebAppData {
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@Bean
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public DataSource dataSource() {
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return new EmbeddedDatabaseBuilder()
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.setType(EmbeddedDatabaseType.HSQL)
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.addScript("classpath:schema.sql")
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.build();
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}
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@Bean
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public JdbcTemplate jdbcTemplate(DataSource dataSource) {
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return new JdbcTemplate(dataSource);
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}
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}
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package carmelo.spring.config;
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import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
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public class WebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
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@Override
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protected Class<?>[] getRootConfigClasses() {
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return new Class[]{ WebAppData.class };
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}
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@Override
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protected Class<?>[] getServletConfigClasses() {
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return new Class[]{ WebAppConfig.class };
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}
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@Override
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protected String[] getServletMappings() {
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return new String[]{"/"};
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}
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}
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package carmelo.spring.controller;
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import java.io.IOException;
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import java.util.List;
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import java.util.Map;
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import javax.servlet.http.HttpServletResponse;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.jdbc.core.JdbcTemplate;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestMethod;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.multipart.MultipartFile;
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import org.springframework.web.servlet.ModelAndView;
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@Controller
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public class ImageController {
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@Autowired
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private JdbcTemplate jdbc;
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@RequestMapping("/")
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public ModelAndView home() {
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String sql = "SELECT * FROM imagen";
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List<Map<String, Object>> imageList = jdbc.queryForList(sql);
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return new ModelAndView("home", "imageList", imageList);
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}
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@RequestMapping("/image")
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public ModelAndView image(@RequestParam("nombre") String nombre) {
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return new ModelAndView("image", "nombre", nombre);
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}
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@RequestMapping(path = "/form", method = RequestMethod.POST)
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public String handleFormUpload(
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@RequestParam("file") MultipartFile file) throws IOException {
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if (!file.isEmpty()) {
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String sql = "INSERT INTO imagen (nombre, tipo, tamano, pixel) VALUES(?, ?, ?, ?)";
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String nombre = file.getOriginalFilename();
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String tipo = file.getContentType();
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Long tamano = file.getSize();
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byte[] pixel = file.getBytes();
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jdbc.update(sql, nombre, tipo, tamano, pixel);
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}
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return "redirect:/";
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}
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@RequestMapping(value = "/uploaded")
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public void getUploadedPicture(
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@RequestParam("nombre") String nombre, HttpServletResponse response)
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throws IOException {
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String sql = "SELECT pixel, tipo FROM imagen WHERE nombre = '" + nombre + "'";
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List<Map<String, Object>> result = jdbc.queryForList(sql);
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if (!result.isEmpty()) {
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byte[] bytes = (byte[]) result.get(0).get("PIXEL");
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String mime = (String) result.get(0).get("TIPO");
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response.setHeader("Content-Type", mime);
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response.getOutputStream().write(bytes);
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}
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}
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}
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CREATE TABLE imagen(nombre VARCHAR(100), tipo VARCHAR(10), tamano BIGINT, pixel BLOB(10M))
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<?xml version="1.0" encoding="UTF-8"?>
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<Context antiJARLocking="true" path="/upload"/>
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<%--
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Document : home
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Created on : 07/18/2017, 07:55:34 AM
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Author : Tutor de programacion
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--%>
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<%@ page contentType="text/html" pageEncoding="UTF-8"%>
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<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>Upload File</title>
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</head>
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<body>
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<h1>Spring MVC File Upload</h1>
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<form method="post" action="/upload/form" enctype="multipart/form-data">
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<input type="file" name="file" accept="image/jpeg,image/png,image/gif"/>
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<input type="submit" value="Subir archivo"/>
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</form>
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<div style="margin-top: 30px;">
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<h3>Imágenes en la base de datos</h3>
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<table cellspacing="0" cellpadding="6" border="1">
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<tr bgcolor="grey" style="color: white">
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<th>No</th>
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<th>Nombre</th>
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<th>Tipo</th>
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<th>Tamaño (Bytes)</th>
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<th>Ver imagen</th>
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</tr>
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<c:forEach var="img" items="${imageList}" varStatus="status">
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<tr>
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<td><b>${status.index + 1}</b></td>
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<td>${img.get("NOMBRE")} </td>
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<td>${img.get("TIPO")} </td>
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<td>${img.get("TAMANO")} </td>
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<td><a href="/upload/image?nombre=${img.get("NOMBRE")}">ver</a> </td>
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</tr>
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</c:forEach>
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</table>
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</div>
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</body>
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</html>
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<%--
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Document : image.jsp
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Created on : 07/19/2017, 11:02:20 AM
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Author : Tutor de programación
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--%>
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<%@page contentType="text/html" pageEncoding="UTF-8"%>
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>Image View</title>
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</head>
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<body>
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<h1>Visor de Imagen</h1>
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<h4>Mostrando la imagen: <i>${nombre}</i></h4>
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<img src="/upload/uploaded?nombre=${nombre}" />
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</body>
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</html>

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