重构getFileNameIndex

designer-base/src/main/java/com/fr/design/mainframe/JTemplateNameHelper.java

@@ -39,7 +39,6 @@ public class JTemplateNameHelper {
         }
         Collections.sort(reportNum);
         BigInteger idx = reportNum.size() > 0 ? reportNum.get(reportNum.size() - 1).add(BigInteger.valueOf(1)) : BigInteger.valueOf(1);
-
         idx = idx.add(BigInteger.valueOf(currentIndex));
         currentIndex++;
         return prefix + idx;
@@ -54,35 +53,39 @@ public class JTemplateNameHelper {
      * @Date 2021/4/9 11:13
      **/
     private static BigInteger getFileNameIndex(String prefix, String fileName) {
-		if (fileName.length() <= prefix.length()) {
+        //如果文件名长度小于等于前缀长度或者匹配前缀失败，直接返回就可以了
+        if ((prefix.length() >= fileName.length()) || (!StringUtils.equals(prefix, fileName.substring(0, prefix.length())))) {
             return null;
         }
-        char[] chars = new char[fileName.length()];
-        int i = 0;
-        for (; i < fileName.length(); i++) {
+        BigInteger integer = null;
+        integer = matchFileNameIndex(prefix, fileName);
+        return integer;
+    }
+
+    private static BigInteger matchFileNameIndex(String prefix, String fileName) {
+        StringBuilder result = new StringBuilder();
+        for (int i = prefix.length(); i < fileName.length(); i++) {
             char c = fileName.charAt(i);
-            //匹配前缀
-            if (i < prefix.length()) {
-                if (c != prefix.charAt(i)) {
-                    return null;
-                }
+            if (isDot(c)) {
+                break;
             } else {
-                if (c == '.') {
-                    break;
-                } else {
-                    //匹配0~9
-                    if (c < 48 || c > 57) {
-                        return null;
-                    }
-                    chars[i - prefix.length()] = c;
+                if (isNotNumber(c)) {
+                    return null;
                 }
+                result.append(c);
             }
         }
-        String s = new String(chars).substring(0, i - prefix.length());
-        BigInteger integer = new BigInteger(s, 10);
-        if (StringUtils.isBlank(s)) {
+        if (StringUtils.isBlank(result.toString())) {
             return null;
         }
-        return integer;
+        return new BigInteger(result.toString(), 10);
+    }
+
+    private static boolean isNotNumber(char c) {
+        return c < 48 || c > 57;
+    }
+
+    private static boolean isDot(char c) {
+        return c == '.';
     }
 }

designer-base/src/test/java/com/fr/design/mainframe/JTemplateNameHelperTest.java

@@ -2,6 +2,8 @@ package com.fr.design.mainframe;
 
 import junit.framework.TestCase;
 
+import com.fr.invoke.Reflect;
+
 /**
  * @author shine
  * @version 10.0
@@ -18,6 +20,27 @@ public class JTemplateNameHelperTest extends TestCase {
         String name1 = JTemplateNameHelper.newTemplateNameByIndex("TEST");
 
         assertEquals("TEST2", name1);
+    }
+
+    public void testGetFileNameIndex() {
+        //正常情况
+        assertEquals("1", Reflect.on(JTemplateNameHelper.class).call("getFileNameIndex", "WorkBook", "WorkBook1").toString());
+
+        //正常情况
+        assertEquals("8888888888", Reflect.on(JTemplateNameHelper.class).call("getFileNameIndex", "WorkBook", "WorkBook8888888888").toString());
+
+        //正常情况
+        assertEquals("88812214128888881231238123123", Reflect.on(JTemplateNameHelper.class).call("getFileNameIndex", "WorkBook", "WorkBook88812214128888881231238123123").toString());
+
+        //前缀不匹配
+        assertNull(Reflect.on(JTemplateNameHelper.class).call("getFileNameIndex", "Work123", "WorkBook8888888888").get());
+
+        //前缀为空
+        assertNull(Reflect.on(JTemplateNameHelper.class).call("getFileNameIndex", "", "WorkBook8888888888").get());
+
+        //文件长度小于前缀
+        assertNull(Reflect.on(JTemplateNameHelper.class).call("getFileNameIndex", "WorkBook", "").get());
+
 
     }
 }