JSONStringer.java.svn-base
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上传日期:2022-07-12
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文件大小:3k
源码类别:
Jsp/Servlet
开发平台:
Java
- package org.json;
- /*
- Copyright (c) 2006 JSON.org
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
- The above copyright notice and this permission notice shall be included in all
- copies or substantial portions of the Software.
- The Software shall be used for Good, not Evil.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
- */
- import java.io.StringWriter;
- /**
- * JSONStringer provides a quick and convenient way of producing JSON text.
- * The texts produced strictly conform to JSON syntax rules. No whitespace is
- * added, so the results are ready for transmission or storage. Each instance of
- * JSONStringer can produce one JSON text.
- * <p>
- * A JSONStringer instance provides a <code>value</code> method for appending
- * values to the
- * text, and a <code>key</code>
- * method for adding keys before values in objects. There are <code>array</code>
- * and <code>endArray</code> methods that make and bound array values, and
- * <code>object</code> and <code>endObject</code> methods which make and bound
- * object values. All of these methods return the JSONWriter instance,
- * permitting cascade style. For example, <pre>
- * myString = new JSONStringer()
- * .object()
- * .key("JSON")
- * .value("Hello, World!")
- * .endObject()
- * .toString();</pre> which produces the string <pre>
- * {"JSON":"Hello, World!"}</pre>
- * <p>
- * The first method called must be <code>array</code> or <code>object</code>.
- * There are no methods for adding commas or colons. JSONStringer adds them for
- * you. Objects and arrays can be nested up to 20 levels deep.
- * <p>
- * This can sometimes be easier than using a JSONObject to build a string.
- * @author JSON.org
- * @version 2008-09-18
- */
- public class JSONStringer extends JSONWriter {
- /**
- * Make a fresh JSONStringer. It can be used to build one JSON text.
- */
- public JSONStringer() {
- super(new StringWriter());
- }
- /**
- * Return the JSON text. This method is used to obtain the product of the
- * JSONStringer instance. It will return <code>null</code> if there was a
- * problem in the construction of the JSON text (such as the calls to
- * <code>array</code> were not properly balanced with calls to
- * <code>endArray</code>).
- * @return The JSON text.
- */
- public String toString() {
- return this.mode == 'd' ? this.writer.toString() : null;
- }
- }