From 50e53e791b318e29a9deb9228a6d1b615b8a9053 Mon Sep 17 00:00:00 2001
From: ulrich
Date: Sat, 10 Apr 2021 17:46:18 +0000
Subject: [PATCH] UI-Anpassungen
---
src/de/uhilger/mediaz/api/StorageHandler.java | 133 +++++++-------------------------------------
1 files changed, 21 insertions(+), 112 deletions(-)
diff --git a/src/de/uhilger/mediaz/api/StorageHandler.java b/src/de/uhilger/mediaz/api/StorageHandler.java
index a44c326..d12e6c1 100644
--- a/src/de/uhilger/mediaz/api/StorageHandler.java
+++ b/src/de/uhilger/mediaz/api/StorageHandler.java
@@ -19,18 +19,12 @@
import com.google.gson.Gson;
import com.sun.net.httpserver.HttpExchange;
-import com.sun.net.httpserver.HttpHandler;
import de.uhilger.mediaz.App;
import static de.uhilger.mediaz.App.RB_EP_LISTE;
import de.uhilger.mediaz.Server;
-import static de.uhilger.mediaz.Server.RB_SLASH;
import de.uhilger.mediaz.store.FileStorage;
import de.uhilger.mediaz.entity.Entity;
-import java.io.BufferedReader;
import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.OutputStream;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
@@ -41,100 +35,14 @@
* @author Ulrich Hilger
* @version 1, 5.4.2021
*/
-public class StorageHandler extends AbstractHandler implements HttpHandler {
+public class StorageHandler extends AbstractHandler {
private static final Logger logger = Logger.getLogger(StorageHandler.class.getName());
-
- /*
- Das REST-Muster fuer die Mediazentrale (Beispiel Ablageort):
-
- 1. HTTP GET Ablageort/[Name] - Liefere den Ablageort namens [Name]
- 2. HTTP GET Ablageort/liste/ - Liefere eine Liste mit Namen aller Ablageorte
- Es duerfen keine Elemente namens "liste" angelegt werden
- 3. HTTP GET Ablageort/ - Liefere eine Liste aller Ablageort-Objekte als JSON
- 4. HTTP PUT Ablageort/[Name] - Der Ablageort wird angelegt. Wenn er bereits existiert,
- wird er geändert. (im Falle einer Aenderung des Namens
- muss der alte Name im URL stehen und im Body die Aenderung)
- 5. HTTP DELETE - loesche den Ablageort
-
- Beispiele:
-
- HTTP GET /mz/api/store/Ablageort/
- liefert alle Ablageort-Objekte
-
- HTTP GET /mz/api/store/Ablageort/liste/
- liefert eine Liste der Namen vorhandener Ablageorte
-
- HTTP GET /mz/api/store/Ablageort/[Name]
- liest den Ablageort namens [Name]
-
- HTTP PUT /mz/api/store/Ablageort/[Name]
- wenn [Name] existiert: Aenderung, sonst neu anlegen
-
- HTTP DELETE /mz/api/store/Ablageort/[Name]
- löscht den Ablageort namens [Name]
-
- */
-
- /** Name der HTTP Methode GET */
- public static final String HTTP_GET = "GET";
-
- /** Name der HTTP Methode PUT */
- public static final String HTTP_PUT = "PUT";
-
- /** Name der HTTP Methode POST */
- public static final String HTTP_POST = "POST";
-
- /** Name der HTTP Methode DELETE */
- public static final String HTTP_DELETE = "DELETE";
-
- public static final String EP_LISTE = "liste/";
-
@Override
- public void handle(HttpExchange e) throws IOException {
- String method = e.getRequestMethod();
- String response = "";
- int code = 200;
- switch(method) {
- case HTTP_GET:
- String json = lesen(e);
- if(json != null) {
- response = json;
- } else {
- response = "nicht gefunden";
- code = 404;
- }
- break;
-
- case HTTP_PUT:
- response = put(e);
- break;
-
- case HTTP_POST:
- response = "nicht unterstuertzt.";
- code = 404;
- break;
-
- case HTTP_DELETE:
- boolean geloescht = loeschen(e);
- if(geloescht) {
- response = "geloescht";
- } else {
- response = "nicht geloescht";
- }
- break;
- }
- logger.fine(response);
- e.sendResponseHeaders(code, response.length());
- OutputStream os = e.getResponseBody();
- os.write(response.getBytes());
- os.close();
- }
-
- private String put(HttpExchange e) throws IOException {
+ protected String put(HttpExchange e) throws IOException {
String path = e.getRequestURI().toString();
- String[] elems = path.split(App.getRs(Server.RB_SLASH));
+ String[] elems = path.split(Server.SLASH);
String type = elems[elems.length - 2];
String elemName = elems[elems.length - 1]; // alter Name, wenn Aenderung
if(!elemName.equalsIgnoreCase(App.getRs(RB_EP_LISTE))) {
@@ -150,7 +58,7 @@
} else {
fs.write(entity, false);
}
- return type + App.getRs(Server.RB_SLASH) + entity.getName();
+ return type + Server.SLASH + entity.getName();
} else {
return "Ungueltiges Objekt im Body.";
}
@@ -158,9 +66,10 @@
return "Ungueltiger Elementname: " + App.getRs(RB_EP_LISTE);
}
}
+
private boolean loeschen(HttpExchange e) {
String path = e.getRequestURI().toString();
- String[] elems = path.split(App.getRs(Server.RB_SLASH));
+ String[] elems = path.split(Server.SLASH);
String type = elems[elems.length - 2];
String elemName = elems[elems.length - 1];
FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF)));
@@ -169,9 +78,9 @@
private String lesen(HttpExchange e) {
String path = e.getRequestURI().toString();
- String[] elems = path.split(App.getRs(Server.RB_SLASH));
+ String[] elems = path.split(Server.SLASH);
FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF)));
- if(path.endsWith(App.getRs(RB_SLASH))) {
+ if(path.endsWith(Server.SLASH)) {
List list = null;
if(elems[elems.length - 1].equalsIgnoreCase(App.getRs(RB_EP_LISTE))) {
String type = elems[elems.length - 2];
@@ -190,18 +99,18 @@
}
}
- private String bodyLesen(HttpExchange e) throws IOException {
- InputStream is = e.getRequestBody();
- BufferedReader r = new BufferedReader(new InputStreamReader(is));
- StringBuilder sb = new StringBuilder();
- String line = r.readLine();
- while(line != null) {
- sb.append(line);
- line = r.readLine();
- }
- r.close();
- String json = sb.toString();
- logger.log(Level.FINE, "json: {0}", json);
- return json;
+ @Override
+ public String get(HttpExchange e) {
+ return lesen(e);
+ }
+
+ @Override
+ public String post(HttpExchange e) {
+ return "nicht unterstuetzt";
+ }
+
+ @Override
+ public boolean delete(HttpExchange e) {
+ return loeschen(e);
}
}
--
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