提交正则表达式相关的代码

chenweijie · chenweijie · commit 3b234583cd6f · 2017-12-22T10:45:21.000+08:00
diff --git a/src/main/java/com/chen/api/util/regex/RegexTest1.java b/src/main/java/com/chen/api/util/regex/RegexTest1.java
@@ -55,5 +55,36 @@ public void testNumber() {
         Arrays.asList(strings).forEach(str -> System.out.println(str + ",matches:" + str.matches(patterStr)));
     }
 
+    /**
+     * 测试换行模式
+     */
+    @Test
+    public void testPattern() {
+        Matcher m = Pattern.compile("(?ms)^.*$").matcher("a\r\nb\r\nc");
+        while (m.find()) {
+            System.out.println("matched:" + m.group());
+        }
+    }
+
+
+    /**
+     * 测试回溯
+     */
+    @Test
+    public void testMatch() {
+        String str = "12345";
+
+        Pattern pattern = Pattern.compile("(\\d{1,3})(\\d{1,3})");
+
+        Matcher matcher = pattern.matcher(str);
+
+        while (matcher.find()) {
+            System.out.println("count:" + matcher.groupCount());
+            for (int i = 0; i < matcher.groupCount(); i++) {
+                System.out.println(matcher.group(i));
+            }
+        }
+    }
+
 
 }
diff --git a/src/main/java/com/chen/api/util/regex/RegexTest3.java b/src/main/java/com/chen/api/util/regex/RegexTest3.java
@@ -11,25 +11,31 @@
  */
 public class RegexTest3 {
 
+
+    /**
+     * 演示pattern  match对象
+     */
     @Test
     public void test1() {
 
         Pattern pattern = Pattern.compile("\\d+");
 
-        Matcher matcher = pattern.matcher("56");
+        Matcher matcher = pattern.matcher("56sd47f");
         //表示整个字符串是否可以与模式匹配
-        boolean b = matcher.matches();
-        matcher.group();
-//        System.out.println("b=="+b);
-        System.out.println(matcher.group());
+        //获取匹配的第一个分组，而且会消费字符串，后续的循环匹配不到56
+//        boolean b = matcher.matches();
 
         while (matcher.find()) {
             System.out.println("result=" + matcher.group());
-            System.out.println("count=" + matcher.groupCount());
         }
+
+
     }
 
 
+    /**
+     * 测试从指定位置查找字符串
+     */
     @Test
     public void test2() {
 
@@ -50,6 +56,9 @@ public void test2() {
     }
 
 
+    /**
+     * 测试分组和分组的个数
+     */
     @Test
     public void test3() {
 
@@ -77,6 +86,9 @@ public void test3() {
     }
 
 
+    /**
+     * 测试分组的开始位置和结束位置
+     */
     @Test
     public void test4() {
         String[] input = new String[]{"Java has regular expressions in 1.4", "regular expressions now expressing in Java", "Java represses oracular expressions"};
diff --git a/src/main/java/com/chen/api/util/regex/TestRegularExpression.java b/src/main/java/com/chen/api/util/regex/TestRegularExpression.java
@@ -2,8 +2,6 @@
 
 import org.junit.Test;
 
-import java.util.Arrays;
-import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -16,23 +14,28 @@
 public class TestRegularExpression {
 
 
-
+    /**
+     * 测试split方法
+     */
     @Test
-    public void test1(){
+    public void test1() {
 
         String input = "This !! unusual use!!of exclamation!!points";
 
-        Pattern pattern =Pattern.compile("!!");
-        String [] arr = pattern.split(input);
+        Pattern pattern = Pattern.compile("!!");
+        String[] arr = pattern.split(input);
         StringBuffer sb = new StringBuffer();
-        pattern.matcher(input).appendReplacement(sb,arr[0].toUpperCase()).appendTail(sb);
+        pattern.matcher(input).appendReplacement(sb, arr[0].toUpperCase()).appendTail(sb);
 
-        String stringSpit ="this is a String!";
+        String stringSpit = "this is a String!";
         String[] arr2 = stringSpit.split("\\n");
 
     }
 
 
+    /**
+     * 测试Matcher.reset()方法
+     */
     @Test
     public void test2() {
 
@@ -47,13 +50,7 @@ public void test2() {
         while (m.find()) {
             System.out.println(m.group());
         }
-
-
     }
 
 
-
-
-
-
 }
diff --git a/src/main/test/com/chen/test/TestCase.java b/src/main/test/com/chen/test/TestCase.java
@@ -22,7 +22,6 @@ public void test() {
         final int TIDYING = 2 << COUNT_BITS;
         final int TERMINATED = 3 << COUNT_BITS;
 
-
     }
 
 

Original file line number	Diff line number	Diff line change
`@@ -22,7 +22,6 @@ public void test() {`
`22`	`22`	`final int TIDYING = 2 << COUNT_BITS;`
`23`	`23`	`final int TERMINATED = 3 << COUNT_BITS;`
`24`	`24`
`25`		`-`
`26`	`25`	`}`
`27`	`26`
`28`	`27`