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mrmodisemrmodise
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Adding all the java classes
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‎src/main/java/modisefileupload/java/config/WebConfig.java

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package modisefileupload.java.config;
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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.context.annotation.Import;
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import org.springframework.context.annotation.PropertySource;
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import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
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import org.springframework.web.servlet.config.annotation.EnableWebMvc;
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import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
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import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
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import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
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import org.springframework.web.servlet.view.InternalResourceViewResolver;
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import modisefileupload.java.config.ApplicationContext;
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@EnableWebMvc
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@Configuration
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@ComponentScan(basePackages={"modisefileupload.java"})
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@Import({ApplicationContext.class})
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@PropertySource("/WEB-INF/database/application.properties")
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public class WebConfig extends WebMvcConfigurerAdapter {
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@Override
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public void addViewControllers(ViewControllerRegistry registry) {
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registry.addViewController("/").setViewName("index");
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}
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@Override
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public void addResourceHandlers(ResourceHandlerRegistry registry) {
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registry.addResourceHandler("/resources/**").addResourceLocations("/WEB-INF/resources/");
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}
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@Bean
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public static PropertySourcesPlaceholderConfigurer propertyPlaceholderConfigurer(){
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return new PropertySourcesPlaceholderConfigurer();
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}
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@Bean
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public InternalResourceViewResolver internalResourceViewResolver(){
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InternalResourceViewResolver resolver = new InternalResourceViewResolver();
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resolver.setPrefix("/WEB-INF/views/");
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resolver.setSuffix(".jsp");
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return resolver;
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}
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}

‎src/main/java/modisefileupload/java/controller/UserController.java

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package modisefileupload.java.controller;
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import java.io.File;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.List;
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import javax.servlet.http.HttpServletRequest;
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import javax.validation.Valid;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Controller;
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import org.springframework.ui.Model;
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import org.springframework.validation.BindingResult;
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import org.springframework.web.bind.annotation.ModelAttribute;
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import org.springframework.web.bind.annotation.PathVariable;
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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.multipart.MultipartFile;
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import org.springframework.web.servlet.ModelAndView;
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import modisefileupload.java.domain.User;
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import modisefileupload.java.service.UserService;
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@Controller
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public class UserController {
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private static final Logger LOGGER = LoggerFactory.getLogger(UserController.class);
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@Autowired
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private UserService userService;
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private Path path;
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@RequestMapping(value = "/usersList")
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public ModelAndView listUsers() {
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List<User> users = userService.listAllUsers();
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LOGGER.debug("------------------------>" + users.size());
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return new ModelAndView("/usersList", "users", users);
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}
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@RequestMapping(value = "/", method = RequestMethod.GET)
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public String home(Model model) {
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User user = new User();
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user.setAge(0);
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model.addAttribute(user);
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return "index";
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}
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@RequestMapping(value = "/index/saveUser", method = RequestMethod.POST)
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public String saveUser(@Valid @ModelAttribute("user") User user, BindingResult result, HttpServletRequest request) {
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if (result.hasErrors()) {
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return "/index";
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}
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//save user to database
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userService.saveUser(user);
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// get the provided image from the form
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MultipartFile userImage = user.getUserImage();
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// get root directory to store the image
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String rootDirectory = request.getSession().getServletContext().getRealPath("/");
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// change any provided image type to png
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// path = Paths.get(rootDirectory + "/WEB-INF/resources/images" +
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// product.getProductId() + ".png");
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path = Paths.get("/home/mrmodise/SpringWorkspace/modise-file-upload/src/main/webapp/WEB-INF/resources/uploaded-images/"
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+ user.getUserId() + ".png");
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// check whether image exists or not
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if (userImage != null && !userImage.isEmpty()) {
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try {
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// convert the image type to png
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userImage.transferTo(new File(path.toString()));
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} catch (IllegalStateException | IOException e) {
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// oops! something did not work as expected
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e.printStackTrace();
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throw new RuntimeException("Saving User image was not successful", e);
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}
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}
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return "redirect:/?success=1";
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}
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/**
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* deleting the user information requires that we delete the image they uploaded
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* the code below takes the preceding thoughts into care
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* @param id
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* @param request
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* @return
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*/
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@RequestMapping(value="/index/deleteUser/{id}")
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public String deleteUser(@PathVariable long id, HttpServletRequest request){
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// get root directory to store the image
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String rootDirectory = request.getSession().getServletContext().getRealPath("/");
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// change any provided image type to png
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// path = Paths.get(rootDirectory + "/WEB-INF/resources/images" +
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// product.getProductId() + ".png");
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path = Paths
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.get("/home/mrmodise/SpringWorkspace/modise-file-upload/src/main/webapp/WEB-INF/resources/uploaded-images/" + id + ".png");
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if(Files.exists(path)){
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try {
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Files.delete(path);
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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}
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userService.deleteUser(id);
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return "redirect:/usersList?delete=1";
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}
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}

‎src/main/java/modisefileupload/java/dao/UserDAO.java

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package modisefileupload.java.dao;
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import org.springframework.data.repository.CrudRepository;
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import org.springframework.stereotype.Repository;
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import modisefileupload.java.domain.User;
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@Repository
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public interface UserDAO extends CrudRepository<User, Long>{
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//no need to implement extra methods, will use the default save method provided
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//by the CrudRepository class
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}

‎src/main/java/modisefileupload/java/domain/User.java

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package modisefileupload.java.domain;
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import javax.persistence.Column;
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import javax.persistence.Entity;
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import javax.persistence.GeneratedValue;
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import javax.persistence.GenerationType;
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import javax.persistence.Id;
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import javax.persistence.Table;
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import javax.persistence.Transient;
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import javax.validation.constraints.Min;
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import javax.validation.constraints.NotNull;
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import org.hibernate.validator.constraints.NotEmpty;
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import org.springframework.web.multipart.MultipartFile;
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/**
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* In this class we will turn all the Class attributes into database table components
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* adding data validations
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* @author mrmodise
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*
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*/
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@Entity
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@Table(name="user")
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public class User {
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@Id
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@GeneratedValue(strategy = GenerationType.AUTO)
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@Column(name="userId",unique=true, nullable=false)
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private Long userId;
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@Column(name="firstName", nullable=false)
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@NotEmpty(message="The first name must be captured")
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private String firstName;
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@Column(name="lastName", nullable=false)
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@NotEmpty(message="The last name must be captured")
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private String lastName;
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@Column(name="address", nullable=false)
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@NotEmpty(message="The address details must be captured")
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private String address;
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@Column(name="age", nullable=false)
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@Min(value=0, message="Age cannot be less than 1")
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@NotNull(message="The age must be captured")
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private int age;
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@Transient
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private MultipartFile userImage;
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public Long getUserId() {
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return userId;
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}
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public void setUserId(Long userId) {
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this.userId = userId;
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}
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public String getFirstName() {
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return firstName;
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}
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public void setFirstName(String firstName) {
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this.firstName = firstName;
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}
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public String getLastName() {
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return lastName;
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}
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public void setLastName(String lastName) {
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this.lastName = lastName;
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}
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public String getAddress() {
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return address;
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}
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public void setAddress(String address) {
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this.address = address;
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}
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public int getAge() {
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return age;
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}
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public void setAge(int age) {
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this.age = age;
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}
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public MultipartFile getUserImage() {
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return userImage;
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}
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public void setUserImage(MultipartFile userImage) {
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this.userImage = userImage;
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}
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}

‎src/main/java/modisefileupload/java/service/UserService.java

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package modisefileupload.java.service;
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import java.util.List;
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import modisefileupload.java.domain.User;
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public interface UserService {
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//needed for saving data to the database
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void saveUser(User user);
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List<User> listAllUsers();
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void deleteUser(long id);
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}

‎src/main/java/modisefileupload/java/service/impl/UserServiceImpl.java

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package modisefileupload.java.service.impl;
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import java.util.List;
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import org.springframework.beans.factory.annotation.Autowired;
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import modisefileupload.java.dao.UserDAO;
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import modisefileupload.java.domain.User;
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import modisefileupload.java.service.UserService;
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public class UserServiceImpl implements UserService {
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@Autowired
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private UserDAO userDao;
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@Override
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public void saveUser(User user) {
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//using the CrudRepository we can easily save the user data to the database
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//no need to implemenent our own save method
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userDao.save(user);
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}
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@Override
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public List<User> listAllUsers() {
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//again we use the default method of CrudRepository to get all users
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return (List<User>) userDao.findAll();
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}
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@Override
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public void deleteUser(long id) {
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userDao.delete(id);
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}
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}

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