1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
27
28 package org.apache.hc.core5.http.io.entity;
29
30 import java.io.ByteArrayInputStream;
31 import java.io.IOException;
32 import java.io.InputStream;
33 import java.io.OutputStream;
34 import java.nio.charset.Charset;
35 import java.nio.charset.StandardCharsets;
36
37 import org.apache.hc.core5.annotation.Contract;
38 import org.apache.hc.core5.annotation.ThreadingBehavior;
39 import org.apache.hc.core5.http.ContentType;
40 import org.apache.hc.core5.util.Args;
41
42 /**
43 * A self contained, repeatable entity that obtains its content from a {@link String}.
44 *
45 * @since 4.0
46 */
47 @Contract(threading = ThreadingBehavior.IMMUTABLE)
48 public class StringEntity extends AbstractHttpEntity {
49
50 private final byte[] content;
51
52 /**
53 * Creates a StringEntity with the specified content and content type.
54 *
55 * @param string content to be used. Not {@code null}.
56 * @param contentType content type to be used. May be {@code null}, in which case the default
57 * MIME type {@link ContentType#TEXT_PLAIN} is assumed.
58 *
59 * @since 5.0
60 */
61 public StringEntity(
62 final String string, final ContentType contentType, final String contentEncoding, final boolean chunked) {
63 super(contentType, contentEncoding, chunked);
64 Args.notNull(string, "Source string");
65 final Charset charset = ContentType.getCharset(contentType, StandardCharsets.ISO_8859_1);
66 this.content = string.getBytes(charset);
67 }
68
69 public StringEntity(final String string, final ContentType contentType, final boolean chunked) {
70 this(string, contentType, null, chunked);
71 }
72
73 public StringEntity(final String string, final ContentType contentType) {
74 this(string, contentType, null, false);
75 }
76
77 /**
78 * Creates a StringEntity with the specified content and charset. The MIME type defaults
79 * to "text/plain".
80 *
81 * @param string content to be used. Not {@code null}.
82 * @param charset character set to be used. May be {@code null}, in which case the default
83 * is {@link StandardCharsets#ISO_8859_1} is assumed
84 *
85 * @since 4.2
86 */
87 public StringEntity(final String string, final Charset charset) {
88 this(string, ContentType.TEXT_PLAIN.withCharset(charset));
89 }
90
91 public StringEntity(final String string, final Charset charset, final boolean chunked) {
92 this(string, ContentType.TEXT_PLAIN.withCharset(charset), chunked);
93 }
94
95 /**
96 * Creates a StringEntity with the specified content. The content type defaults to
97 * {@link ContentType#TEXT_PLAIN}.
98 *
99 * @param string content to be used. Not {@code null}.
100 *
101 * @throws IllegalArgumentException if the string parameter is null
102 */
103 public StringEntity(final String string) {
104 this(string, ContentType.DEFAULT_TEXT);
105 }
106
107 @Override
108 public final boolean isRepeatable() {
109 return true;
110 }
111
112 @Override
113 public final long getContentLength() {
114 return this.content.length;
115 }
116
117 @Override
118 public final InputStream getContent() throws IOException {
119 return new ByteArrayInputStream(this.content);
120 }
121
122 @Override
123 public final void writeTo(final OutputStream outStream) throws IOException {
124 Args.notNull(outStream, "Output stream");
125 outStream.write(this.content);
126 outStream.flush();
127 }
128
129 @Override
130 public final boolean isStreaming() {
131 return false;
132 }
133
134 @Override
135 public final void close() throws IOException {
136 // nothing to do
137 }
138
139 }