A continuación los pasos a seguir y cumplir con los requerimientos expuestos:
1. Ejecutamos el comando json add:
json add --class ~.model.Ejemplo
Este comando introducirá la anotación @RooJson en el tipo de destino especificado:
@RooJson
public class Ejemplo {
}
Y creara el siguiente archivo .aj donde están declarados todos los métodos que convertirán la entidad a json y viceversa:
package org.springroo.model;
import flexjson.JSONDeserializer;
import flexjson.JSONSerializer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.springroo.model.Ejemplo;
privileged aspect Ejemplo_Roo_Json {
public String Ejemplo.toJson() {
return new JSONSerializer().exclude("*.class").serialize(this);
}
public static Ejemplo Ejemplo.fromJsonToEjemplo(String json) {
return new JSONDeserializer<Ejemplo>().use(null, Ejemplo.class).deserialize(json);
}
public static String Ejemplo.toJsonArray(Collection<Ejemplo> collection) {
return new JSONSerializer().exclude("*.class").serialize(collection);
}
public static Collection<Ejemplo> Ejemplo.fromJsonArrayToEjemploes(String json) {
return new JSONDeserializer<List<Ejemplo>>().use(null, ArrayList.class).use("values", Ejemplo.class).deserialize(json);
}
}
2. Crear un controllador donde se expondrán los servicios rest mediante el siguiente comando:
controller class --class ~.web.EjemploController --preferredMapping /restAPI/ejemplo
Esto creara la siguiente clase java:
package org.springroo.web;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springroo.model.Ejemplo;
@RequestMapping("/restAPI/ejemplo")
@Controller
public class EjemploController {
}
3. Ejecutamos el comando web mvc json add:
web mvc json add --jsonObject ~.model.Ejemplo --class ~.web.EjemploController
Este comando introduce la anotación @RooWebJson en el tipo de destino especificado.
package org.springroo.web;
import org.springframework.roo.addon.web.mvc.controller.json.RooWebJson;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springroo.model.Ejemplo;
@RequestMapping("/restAPI/ejemplo")
@Controller
@RooWebJson(jsonObject = Ejemplo.class)
public class EjemploController {
}
Creando este archivo .aj con los métodos crud restful:
// WARNING: DO NOT EDIT THIS FILE. THIS FILE IS MANAGED BY SPRING ROO.
// You may push code into the target .java compilation unit if you wish to edit any member(s).
package org.springroo.web;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springroo.model.Ejemplo;
import org.springroo.services.EjemploService;
import org.springroo.web.EjemploController;
privileged aspect EjemploController_Roo_Controller_Json {
@Autowired
EjemploService EjemploController.EjemploService;
@RequestMapping(value = "/{id}", headers = "Accept=application/json")
@ResponseBody
public ResponseEntity EjemploController.showJson(@PathVariable("id") Integer id) {
Ejemplo Ejemplo = EjemploService.findEjemplo(id);
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", "application/json; charset=utf-8");
if (Ejemplo == null) {
return new ResponseEntity(headers, HttpStatus.NOT_FOUND);
}
return new ResponseEntity(Ejemplo.toJson(), headers, HttpStatus.OK);
}
@RequestMapping(headers = "Accept=application/json")
@ResponseBody
public ResponseEntity EjemploController.listJson() {
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", "application/json; charset=utf-8");
List result = EjemploService.findAllEjemploes();
return new ResponseEntity(Ejemplo.toJsonArray(result), headers, HttpStatus.OK);
}
@RequestMapping(method = RequestMethod.POST, headers = "Accept=application/json")
public ResponseEntity EjemploController.createFromJson(@RequestBody String json) {
Ejemplo Ejemplo = Ejemplo.fromJsonToEjemplo(json);
EjemploService.saveEjemplo(Ejemplo);
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", "application/json");
return new ResponseEntity(headers, HttpStatus.CREATED);
}
@RequestMapping(value = "/jsonArray", method = RequestMethod.POST, headers = "Accept=application/json")
public ResponseEntity EjemploController.createFromJsonArray(@RequestBody String json) {
for (Ejemplo Ejemplo: Ejemplo.fromJsonArrayToEjemploes(json)) {
EjemploService.saveEjemplo(Ejemplo);
}
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", "application/json");
return new ResponseEntity(headers, HttpStatus.CREATED);
}
@RequestMapping(method = RequestMethod.PUT, headers = "Accept=application/json")
public ResponseEntity EjemploController.updateFromJson(@RequestBody String json) {
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", "application/json");
Ejemplo Ejemplo = Ejemplo.fromJsonToEjemplo(json);
if (EjemploService.updateEjemplo(Ejemplo) == null) {
return new ResponseEntity(headers, HttpStatus.NOT_FOUND);
}
return new ResponseEntity(headers, HttpStatus.OK);
}
@RequestMapping(value = "/jsonArray", method = RequestMethod.PUT, headers = "Accept=application/json")
public ResponseEntity EjemploController.updateFromJsonArray(@RequestBody String json) {
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", "application/json");
for (Ejemplo Ejemplo: Ejemplo.fromJsonArrayToEjemploes(json)) {
if (EjemploService.updateEjemplo(Ejemplo) == null) {
return new ResponseEntity(headers, HttpStatus.NOT_FOUND);
}
}
return new ResponseEntity(headers, HttpStatus.OK);
}
@RequestMapping(value = "/{id}", method = RequestMethod.DELETE, headers = "Accept=application/json")
public ResponseEntity EjemploController.deleteFromJson(@PathVariable("id") Integer id) {
Ejemplo Ejemplo = EjemploService.findEjemplo(id);
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", "application/json");
if (Ejemplo == null) {
return new ResponseEntity(headers, HttpStatus.NOT_FOUND);
}
EjemploService.deleteEjemplo(Ejemplo);
return new ResponseEntity(headers, HttpStatus.OK);
}
}
4. Asegurando nuestra aplicación mediante el siguiente comando:
spring security setup
Este comando creara el siguiente archivo de configuración: applicationContext-security.xml
Configuración que asegura nuestras urls de servicios rest pero sin redirigir a nuestro modulo de login:
<!-- HTTP security configurations -->
<http pattern="/restAPI/**" create-session="stateless" authentication-manager-ref="authenticationManager">
<intercept-url pattern="/restAPI/**" access="ROLE_ADMIN" />
<http-basic />
</http>
Y dejamos la configuración por defecto que nos genero spring roo:
<http auto-config="true" use-expressions="true" create-session="always">
<form-login login-processing-url="/resources/j_spring_security_check" login-page="/login" authentication-failure-url="/login?login_error=t" />
<logout logout-url="/resources/j_spring_security_logout" />
<!-- Configure these elements to secure URIs in your application -->
<intercept-url pattern="/choices/**" access="hasRole('ROLE_ADMIN')" />
<intercept-url pattern="/member/**" access="isAuthenticated()" />
<intercept-url pattern="/resources/**" access="permitAll" />
<intercept-url pattern="/**" access="permitAll" />
</http>
5. Probamos nuestras configuraciones en el navegador y la salida de nuestros servicios rest:
Intentando acceder a un modulo seguro nos muestra el login form:
Intentado acceder a una url segura de nuestros servicios rest:
Consultando el registro con id = 1 de nuestra tabla ejemplo veamos la salida en nuestro navegador:
url: http://localhost:8080/appXXXXXXX/restAPI/ejemplo/1 muestra la siguiente salida:
{"id":1,"idejemplo":1,"t1":"","t11":"","t12":"","t13":"","t14":"","t15":"","t16":"","t17":"","t18":"","t2":"","t3":"","t4":"","t5":"","t6":"","t7":"","t8":"","text1":"WILLIAMS","text10":"","text11":"","text12":"","text13":"","text14":"","text15":"","text16":"","text17":"","text18":"","text19":"","text20":"","text21":"","text22":"","text23":"","text24":"","text25":"","text26":"","text27":"","text28":"","text29":"","text3":"","text30":"","text31":"","text32":"","text33":"","text34":"","text35":"","text36":"","text39":"","text4":"","text40":"","text41":"","text42":"","text43":"","text44":"","text45":"","text46":"","text47":"","text48":"","text49":null,"text5":"","text50":"","text52":"","text6":"","text7":"","text8":"","text9":""}
Consultando todos los registros:
url: http://localhost:8080/appNegocioIribarren/restAPI/ejemplo muestra la siguiente salida:
[{"id":2,"idejemplo":2,"t1":null,"t11":null,"t12":null,"t13":null,"t14":null,"t15":null,"t16":null,"t17":null,"t18":null,"t2":null,"t3":null,"t4":null,"t5":null,"t6":null,"t7":null,"t8":null,"text1":null,"text10":null,"text11":null,"text12":null,"text13":null,"text14":null,"text15":null,"text16":null,"text17":null,"text18":null,"text19":null,"text20":null,"text21":null,"text22":null,"text23":null,"text24":null,"text25":null,"text26":null,"text27":null,"text28":null,"text29":null,"text3":null,"text30":null,"text31":null,"text32":null,"text33":null,"text34":null,"text35":null,"text36":null,"text39":null,"text4":null,"text40":null,"text41":null,"text42":null,"text43":null,"text44":null,"text45":null,"text46":null,"text47":null,"text48":null,"text49":null,"text5":null,"text50":null,"text52":null,"text6":null,"text7":null,"text8":null,"text9":null},{"id":3,"idejemplo":3,"t1":"","t11":"","t12":"","t13":"","t14":"","t15":"","t16":"","t17":"","t18":"","t2":"","t3":"","t4":"","t5":"","t6":"","t7":"","t8":"","text1":"","text10":"","text11":"","text12":"","text13":"","text14":"","text15":"","text16":"","text17":"","text18":"","text19":"","text20":"","text21":"","text22":"","text23":"","text24":"","text25":"","text26":"","text27":"","text28":"","text29":"","text3":null,"text30":"","text31":"","text32":"","text33":"","text34":"","text35":"","text36":"","text39":"","text4":"","text40":"","text41":"","text42":"","text43":"","text44":"","text45":"","text46":"","text47":null,"text48":"","text49":null,"text5":"","text50":"","text52":null,"text6":"","text7":"","text8":"","text9":""},{"id":1,"idejemplo":1,"t1":"","t11":"","t12":"","t13":"","t14":"","t15":"","t16":"","t17":"","t18":"","t2":"","t3":"","t4":"","t5":"","t6":"","t7":"","t8":"","text1":"WILLIAMS","text10":"","text11":"","text12":"","text13":"","text14":"","text15":"","text16":"","text17":"","text18":"","text19":"","text20":"","text21":"","text22":"","text23":"","text24":"","text25":"","text26":"","text27":"","text28":"","text29":"","text3":"","text30":"","text31":"","text32":"","text33":"","text34":"","text35":"","text36":"","text39":"","text4":"","text40":"","text41":"","text42":"","text43":"","text44":"","text45":"","text46":"","text47":"","text48":"","text49":null,"text5":"","text50":"","text52":"","text6":"","text7":"","text8":"","text9":""}]
6.Agreamos la siguiente dependencia en nuestro archivo pom.xml la necesitaremos para comenzar a desarrollar nuestra aplicación cliente:
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-client</artifactId>
<version>1.8</version>
</dependency>
7. Creando nuestra aplicación cliente mediante la api de jersey client, la explicaré mediante el mismo código:
package org.springroo.test;
import java.io.IOException;
import javax.naming.AuthenticationException;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.star.lang.IllegalArgumentException;
public class ClientJersey {
public static void main(String[] args) throws IOException,
AuthenticationException {
Client client = Client.create();
try {
String auth = new sun.misc.BASE64Encoder().encode("admin:admin"
.getBytes());
WebResource webResource = client
.resource("http://192.168.1.103:8080/appXXXXXX/restAPI/ejemplo");
ClientResponse response = webResource
.header("Authorization", "Basic " + auth)
.type("application/json").accept("application/json")
.get(ClientResponse.class);
int statusCode = response.getStatus();
if (statusCode == 401) {
throw new AuthenticationException(
"Invalid Username or Password");
}
if (statusCode == 403) {
throw new AuthenticationException("Usuario no autorizado");
}
//Obtenemos el arreglo de objetos Ejemplo y lo recorremos para obtener el objeto de id = 1
JSONArray ja = new JSONArray(response.getEntity(String.class));
JSONObject joForUpdate = null;
for (int i = 0; i < ja.length(); i++) {
if (ja.getJSONObject(i).getInt("id") == 1) {
joForUpdate = ja.getJSONObject(i);
break;
}
}
if (joForUpdate == null)
throw new IllegalArgumentException("json object null");
System.out.println(joForUpdate.get("id"));
joForUpdate.put("text1", "RIVAS");
// Luego de obtener el objeto de id = 1 realizamos la actualizacion de su atributo text1
response = webResource.header("Authorization", "Basic " + auth)
.type("application/json").accept("application/json")
.put(ClientResponse.class, joForUpdate.toString());
System.out.println("Estatus: " + response.getStatus());
} catch (JSONException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} finally {
client.destroy();
}
}
}
8. Verificación de si el atributo text1 del registro con id = 1 cambio:
url: http://localhost:8080/appXXXXXX/restAPI/ejemplo
[{"id":2,"idejemplo":2,"t1":null,"t11":null,"t12":null,"t13":null,"t14":null,"t15":null,"t16":null,"t17":null,"t18":null,"t2":null,"t3":null,"t4":null,"t5":null,"t6":null,"t7":null,"t8":null,"text1":null,"text10":null,"text11":null,"text12":null,"text13":null,"text14":null,"text15":null,"text16":null,"text17":null,"text18":null,"text19":null,"text20":null,"text21":null,"text22":null,"text23":null,"text24":null,"text25":null,"text26":null,"text27":null,"text28":null,"text29":null,"text3":null,"text30":null,"text31":null,"text32":null,"text33":null,"text34":null,"text35":null,"text36":null,"text39":null,"text4":null,"text40":null,"text41":null,"text42":null,"text43":null,"text44":null,"text45":null,"text46":null,"text47":null,"text48":null,"text49":null,"text5":null,"text50":null,"text52":null,"text6":null,"text7":null,"text8":null,"text9":null},{"id":3,"idejemplo":3,"t1":"","t11":"","t12":"","t13":"","t14":"","t15":"","t16":"","t17":"","t18":"","t2":"","t3":"","t4":"","t5":"","t6":"","t7":"","t8":"","text1":null,"text10":"","text11":"","text12":"","text13":"","text14":"","text15":"","text16":"","text17":"","text18":"","text19":"","text20":"","text21":"","text22":"","text23":"","text24":"","text25":"","text26":"","text27":"","text28":"","text29":"","text3":null,"text30":"","text31":"","text32":"","text33":"","text34":"","text35":"","text36":"","text39":"","text4":"","text40":"","text41":"","text42":"","text43":"","text44":"","text45":"","text46":"","text47":null,"text48":"","text49":null,"text5":"","text50":"","text52":null,"text6":"","text7":"","text8":"","text9":""},{"id":1,"idejemplo":1,"t1":"","t11":"","t12":"","t13":"","t14":"","t15":"","t16":"","t17":"","t18":"","t2":"","t3":"","t4":"","t5":"","t6":"","t7":"","t8":"","text1":"RIVAS","text10":"","text11":"","text12":"","text13":"","text14":"","text15":"","text16":"","text17":"","text18":"","text19":"","text20":"","text21":"","text22":"","text23":"","text24":"","text25":"","text26":"","text27":"","text28":"","text29":"","text3":"","text30":"","text31":"","text32":"","text33":"","text34":"","text35":"","text36":"","text39":"","text4":"","text40":"","text41":"","text42":"","text43":"","text44":"","text45":"","text46":"","text47":"","text48":"","text49":null,"text5":"","text50":"","text52":"","text6":"","text7":"","text8":"","text9":""}]
Con esto hemos finalizado este corto pero muy educativo tutorial.
