import com.google.common.base.Stopwatch;
import org.apache.commons.lang3.StringUtils;import java.text.MessageFormat;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;/*** created by @author <a href="mailto:congshaogang@meituan.com">Shaogang Cong</a> on 16/5/31.*/
public class EffiencyTest {private static String aaa = "满{sum}元减{credit}元,在线支付再减{cre1},限{start}到{endtime}";private static String aaa1 = "满{0}元减{1}元,在线支付再减{2},限{3}到{4}";static Object[] aaa1Array = {100, 19, 20, "23:30", "23:45"};static Map<String, Object> parameterMap = new HashMap<String, Object>();static {parameterMap.put("sum", 100);parameterMap.put("credit", 19);parameterMap.put("cre1", 20);parameterMap.put("start", "23:30");parameterMap.put("endtime", "23:45");}public static void main(String[] args) {Stopwatch stopwatch = Stopwatch.createStarted();for (int i = 0; i < 100000; i++) {MessageFormat.format(aaa1, aaa1Array);}System.out.println("messageformat" + stopwatch.elapsed(TimeUnit.MILLISECONDS));String patternString = "\\{(" + StringUtils.join(parameterMap.keySet(), "|") + ")\\}";System.out.println(patternString);stopwatch.reset();stopwatch.start();Pattern pattern = Pattern.compile(patternString);for (int i = 0; i < 100000; i++) {Matcher matcher = pattern.matcher(aaa);StringBuffer sb = new StringBuffer();while (matcher.find()) {matcher.appendReplacement(sb, parameterMap.get(matcher.group(1)).toString());}matcher.appendTail(sb);System.out.println(sb.toString());}System.out.println("pattern" + stopwatch.elapsed(TimeUnit.MILLISECONDS));}}

messageformat910
\{(endtime|start|sum|cre1|credit)\}
pattern229