org.glassfish.admin.rest.readers.FormReader Maven / Gradle / Ivy
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// Portions Copyright [2019-2021] Payara Foundation and/or affiliates
package org.glassfish.admin.rest.readers;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.net.URLDecoder;
import java.nio.charset.StandardCharsets;
import java.util.Map;
import java.util.HashMap;
import java.util.StringTokenizer;
import jakarta.ws.rs.Consumes;
import jakarta.ws.rs.core.MediaType;
import jakarta.ws.rs.core.MultivaluedMap;
import jakarta.ws.rs.ext.MessageBodyReader;
import jakarta.ws.rs.ext.Provider;
/**
*
* @author mh124079
* @author Ludovic Champenois [email protected]
*/
@Consumes({MediaType.APPLICATION_FORM_URLENCODED, MediaType.APPLICATION_OCTET_STREAM})
@Provider
public class FormReader implements MessageBodyReader> {
private static final String DEFAULT_CHARSET = StandardCharsets.UTF_8.toString();
@Override
public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return Map.class.isAssignableFrom(type);
}
@Override
public Map readFrom(Class> type, Type genericType,
Annotation[] annotations, MediaType mediaType, MultivaluedMap headers,
InputStream in) throws IOException {
String formData = readAsString(in);
Map map = new HashMap();
StringTokenizer tokenizer = new StringTokenizer(formData, "&");
String token;
while (tokenizer.hasMoreTokens()) {
token = tokenizer.nextToken();
int idx = token.indexOf('=');
if (idx < 0) {
map.put(URLDecoder.decode(token, DEFAULT_CHARSET), null);
} else if (idx > 0) {
map.put(URLDecoder.decode(token.substring(0, idx), DEFAULT_CHARSET), URLDecoder.decode(token.substring(idx+1), DEFAULT_CHARSET));
}
}
return map;
}
public final String readAsString(InputStream in) throws IOException {
Reader reader = new InputStreamReader(in);
StringBuilder sb = new StringBuilder();
char[] c = new char[1024];
int l;
while ((l = reader.read(c)) != -1) {
sb.append(c, 0, l);
}
return sb.toString();
}
}