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20240528-BJava
Commit 974a6bf0 by Patryk Czarnik
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Rozdzielenie wersji JSON i XML

parent 26f52298
Showing with 190 additions and 0 deletions
PC27-RestSerwer/src/main/java/sklep/rest/RProductsHtml.java 0 → 100644
package sklep.rest;
import jakarta.ws.rs.*;
import sklep.db.DBConnection;
import sklep.db.DBException;
import sklep.db.ProductDAO;
import sklep.db.RecordNotFound;
import sklep.model.Product;
import java.util.List;
@Path("/products.html")
@Produces("text/html;charset=UTF-8")
public class RProductsHtml {
@GET
public String allProducts() throws DBException {
try(DBConnection db = DBConnection.open()) {
ProductDAO productDAO = db.productDAO();
List<Product> products = productDAO.readAll();
StringBuilder txt = new StringBuilder("<!DOCTYPE html>\n<html><body>\n");
txt.append("<h1>Lista produktów</h1>\n");
for(Product product : products) {
txt.append(product.toHtml()).append('\n');
}
txt.append("</body></html>");
return txt.toString();
}
}
@GET
@Path("/{id}")
public String oneProduct(@PathParam("id") int productId) throws DBException, RecordNotFound {
try(DBConnection db = DBConnection.open()) {
ProductDAO productDAO = db.productDAO();
Product product = productDAO.findById(productId);
return "<!DOCTYPE html>\n<html><body>" + product.toHtml() + "</body></html>";
}
}
}
PC27-RestSerwer/src/main/java/sklep/rest/RProductsJson.java 0 → 100644
package sklep.rest;
import jakarta.ws.rs.*;
import sklep.db.DBConnection;
import sklep.db.DBException;
import sklep.db.ProductDAO;
import sklep.db.RecordNotFound;
import sklep.model.Product;
import java.math.BigDecimal;
import java.util.List;
@Path("/products.json")
@Produces("application/json")
@Consumes("application/json")
public class RProductsJson {
@GET
public List<Product> allProducts() throws DBException {
try(DBConnection db = DBConnection.open()) {
ProductDAO productDAO = db.productDAO();
return productDAO.readAll();
}
}
@GET
@Path("/{id}")
// przykładowo /api/products.json/3
public Product oneProduct(@PathParam("id") int productId) throws DBException, RecordNotFound {
try(DBConnection db = DBConnection.open()) {
ProductDAO productDAO = db.productDAO();
return productDAO.findById(productId);
}
}
@POST
public void saveProduct(Product product) throws DBException {
try(DBConnection db = DBConnection.open()) {
ProductDAO productDAO = db.productDAO();
productDAO.save(product);
db.commit();
}
}
// Nie praktykuje się tego zbyt często, ale można zdefiniować dedykowane metody dające dostęp do poszczególnych pól obiektu (aby nie transferować całego rekordu, gdy potrzebna tylko jedna informacja)
@GET
@Path("/{id}/price")
public BigDecimal getPrice(@PathParam("id") int productId) throws DBException, RecordNotFound {
return oneProduct(productId).getPrice();
}
@PUT
@Path("/{id}/price")
public void setPrice(@PathParam("id") int productId, BigDecimal newPrice) throws DBException, RecordNotFound {
try(DBConnection db = DBConnection.open()) {
ProductDAO productDAO = db.productDAO();
Product product = productDAO.findById(productId);
product.setPrice(newPrice);
productDAO.save(product);
db.commit();
}
}
@GET
@Path("/{id}/photo")
@Produces("image/jpeg")
public byte[] getPhoto(@PathParam("id") int productId) throws DBException, RecordNotFound {
return PhotoUtil.readBytes(productId);
}
@PUT
@Path("/{id}/photo")
@Consumes("image/jpeg")
public void getPhoto(@PathParam("id") int productId, byte[] bajty) {
PhotoUtil.writeBytes(productId, bajty);
}
}
PC27-RestSerwer/src/main/java/sklep/rest/RProductsXml.java 0 → 100644
package sklep.rest;
import jakarta.ws.rs.*;
import sklep.db.DBConnection;
import sklep.db.DBException;
import sklep.db.ProductDAO;
import sklep.db.RecordNotFound;
import sklep.model.Product;
import java.math.BigDecimal;
import java.util.List;
@Path("/products.xml")
@Produces("application/xml")
@Consumes("application/xml")
public class RProductsXml {
@GET
public List<Product> allProducts() throws DBException {
try(DBConnection db = DBConnection.open()) {
ProductDAO productDAO = db.productDAO();
return productDAO.readAll();
}
}
@GET
@Path("/{id}")
// przykładowo /api/products.xml/3
public Product oneProduct(@PathParam("id") int productId) throws DBException, RecordNotFound {
try(DBConnection db = DBConnection.open()) {
ProductDAO productDAO = db.productDAO();
return productDAO.findById(productId);
}
}
@POST
public void saveProduct(Product product) throws DBException {
try(DBConnection db = DBConnection.open()) {
ProductDAO productDAO = db.productDAO();
productDAO.save(product);
db.commit();
}
}
@GET
@Path("/{id}/price")
public BigDecimal getPrice(@PathParam("id") int productId) throws DBException, RecordNotFound {
return oneProduct(productId).getPrice();
}
@PUT
@Path("/{id}/price")
public void setPrice(@PathParam("id") int productId, BigDecimal newPrice) throws DBException, RecordNotFound {
try(DBConnection db = DBConnection.open()) {
ProductDAO productDAO = db.productDAO();
Product product = productDAO.findById(productId);
product.setPrice(newPrice);
productDAO.save(product);
db.commit();
}
}
@GET
@Path("/{id}/photo")
@Produces("image/jpeg")
public byte[] getPhoto(@PathParam("id") int productId) throws DBException, RecordNotFound {
return PhotoUtil.readBytes(productId);
}
@PUT
@Path("/{id}/photo")
@Consumes("image/jpeg")
public void getPhoto(@PathParam("id") int productId, byte[] bajty) {
PhotoUtil.writeBytes(productId, bajty);
}
}
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