JSON压缩：JSONMinify
jopen
11年前
JSONMinify 移除了 JSON 或者 JSON+C（JSON+C = JSON with comments） 文档中的所有空白和注释，实现对 JSON 内容的最小化压缩。实现无开销和近乎完美的表现。这个包只有53行源码：
public class JSONMinify { public static String minify(String jsonString) { boolean in_string = false; boolean in_multiline_comment = false; boolean in_singleline_comment = false; char string_opener = 'x'; // unused value, just something that makes compiler happy StringBuilder out = new StringBuilder(); for (int i = 0; i < jsonString.length(); i++) { // get next (c) and next-next character (cc) char c = jsonString.charAt(i); String cc = jsonString.substring(i, Math.min(i+2, jsonString.length())); // big switch is by what mode we're in (in_string etc.) if (in_string) { if (c == string_opener) { in_string = false; out.append(c); } else if (c == '\\') { // no special treatment needed for \\u, it just works like this too out.append(cc); ++i; } else out.append(c); } else if (in_singleline_comment) { if (c == '\r' || c == '\n') in_singleline_comment = false; } else if (in_multiline_comment) { if (cc.equals("*/")) { in_multiline_comment = false; ++i; } } else { // we're outside of the special modes, so look for mode openers (comment start, string start) if (cc.equals("/*")) { in_multiline_comment = true; ++i; } else if (cc.equals("//")) { in_singleline_comment = true; ++i; } else if (c == '"' || c == '\'') { in_string = true; string_opener = c; out.append(c); } else if (!Character.isWhitespace(c)) out.append(c); } } return out.toString(); } }