test

src/test/java/utils/StringUtil.java

+package utils;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Random;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Created by hanzhanli on 2017/8/16.
+ */
+public class StringUtil {
+
+    public static String generateStringByTime(){
+        Date date=new Date();
+        SimpleDateFormat sdf=new SimpleDateFormat("MMdd");
+        return sdf.format(date)+"-"+(int)(Math.random()*100);
+    }
+
+    public static String generateRandomString(int length) {
+        String str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+        Random random = new Random();
+        StringBuffer buf = new StringBuffer();
+        for (int i = 0; i < length; i++) {
+            int num = random.nextInt(36);
+            buf.append(str.charAt(num));
+        }
+        return buf.toString();
+    }
+    public static String getMatcher(String regex, String source,int index) {
+        String result = "";
+        Pattern pattern = Pattern.compile(regex);
+        Matcher matcher = pattern.matcher(source);
+        if (matcher.find()) {
+            result = matcher.group(1);
+        }
+        return result;
+    }
+
+    public static void main(String[] args) {
+        String s = "{\"code\":\"0\",\"desc\":\"获取标签成功\",\"data\":{\"matchTagNums\":[\"20101\"],\"bannedTagNums\":[\"30101\"],\"promoteURLTagNums\":[\"40101\"],\"materialTagNums\":[\"50101\"]}}";
+        String source = "\"matchTagNums\":[\"(.*?)\"]";
+        System.out.println(getMatcher(source,s,1));
+    }
+}