fix StrUtil bug

CHANGELOG.md

@@ -3,7 +3,7 @@
 
 -------------------------------------------------------------------------------------------------------------
 
-# 5.4.3 (2020-09-13)
+# 5.4.3 (2020-09-15)
 
 ### 新特性
 * 【core   】     使用静态的of方法来new对象（pr#177@Gitee）
@@ -16,6 +16,7 @@
 ### Bug修复
 * 【core   】     修复Dict.of错误（issue#I1UUO5@Gitee）
 * 【core   】     修复UrlBuilder地址参数问题（issue#I1UWCA@Gitee）
+* 【core   】     修复StrUtil.toSymbolCase转换问题（issue#1075@Github）
 
 -------------------------------------------------------------------------------------------------------------
 

hutool-core/src/main/java/cn/hutool/core/text/StrBuilder.java

@@ -462,6 +462,9 @@ public class StrBuilder implements CharSequence, Appendable, Serializable {
 
 	@Override
 	public char charAt(int index) {
+		if(index < 0){
+			index = this.position + index;
+		}
 		if ((index < 0) || (index > this.position)) {
 			throw new StringIndexOutOfBoundsException(index);
 		}

hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java

@@ -2633,7 +2633,7 @@ public class StrUtil {
 		}
 
 		final int length = str.length();
-		final StringBuilder sb = new StringBuilder();
+		final StrBuilder sb = new StrBuilder();
 		char c;
 		for (int i = 0; i < length; i++) {
 			c = str.charAt(i);
@@ -2642,12 +2642,12 @@ public class StrUtil {
 				// 遇到大写字母处理
 				final Character nextChar = (i < str.length() - 1) ? str.charAt(i + 1) : null;
 				if (null != preChar && Character.isUpperCase(preChar)) {
-					// 前一个字符为大写，则按照一个词对待
+					// 前一个字符为大写，则按照一个词对待，例如AB
 					sb.append(c);
-				} else if (null != nextChar && Character.isUpperCase(nextChar)) {
+				} else if (null != nextChar && (false == Character.isLowerCase(nextChar))) {
-					// 后一个为大写字母，按照一个词对待
+					// 后一个为非小写字母，按照一个词对待
 					if (null != preChar && symbol != preChar) {
-						// 前一个是非大写时按照新词对待，加连接符
+						// 前一个是非大写时按照新词对待，加连接符，例如xAB
 						sb.append(symbol);
 					}
 					sb.append(c);
@@ -2660,8 +2660,11 @@ public class StrUtil {
 					sb.append(Character.toLowerCase(c));
 				}
 			} else {
-				if (sb.length() > 0 && Character.isUpperCase(sb.charAt(sb.length() - 1)) && symbol != c) {
+				if (symbol != c
-					// 当结果中前一个字母为大写，当前为小写，说明此字符为新词开始（连接符也表示新词）
+						&& sb.length() > 0
+						&& Character.isUpperCase(sb.charAt(-1))
+						&& Character.isLowerCase(c)) {
+					// 当结果中前一个字母为大写，当前为小写(非数字或字符)，说明此字符为新词开始（连接符也表示新词）
 					sb.append(symbol);
 				}
 				// 小写或符号

hutool-core/src/test/java/cn/hutool/core/util/StrUtilTest.java

@@ -10,7 +10,6 @@ import java.util.List;
  * 字符串工具类单元测试
  *
  * @author Looly
- *
  */
 public class StrUtilTest {
 
@@ -39,7 +38,7 @@ public class StrUtilTest {
 	public void cutTest() {
 		String str = "aaabbbcccdddaadfdfsdfsdf0";
 		String[] cut = StrUtil.cut(str, 4);
-		Assert.assertArrayEquals(new String[] { "aaab", "bbcc", "cddd", "aadf", "dfsd", "fsdf", "0" }, cut);
+		Assert.assertArrayEquals(new String[]{"aaab", "bbcc", "cddd", "aadf", "dfsd", "fsdf", "0"}, cut);
 	}
 
 	@Test
@@ -59,20 +58,20 @@ public class StrUtilTest {
 	public void splitToLongTest() {
 		String str = "1,2,3,4, 5";
 		long[] longArray = StrUtil.splitToLong(str, ',');
-		Assert.assertArrayEquals(new long[] { 1, 2, 3, 4, 5 }, longArray);
+		Assert.assertArrayEquals(new long[]{1, 2, 3, 4, 5}, longArray);
 
 		longArray = StrUtil.splitToLong(str, ",");
-		Assert.assertArrayEquals(new long[] { 1, 2, 3, 4, 5 }, longArray);
+		Assert.assertArrayEquals(new long[]{1, 2, 3, 4, 5}, longArray);
 	}
 
 	@Test
 	public void splitToIntTest() {
 		String str = "1,2,3,4, 5";
 		int[] intArray = StrUtil.splitToInt(str, ',');
-		Assert.assertArrayEquals(new int[] { 1, 2, 3, 4, 5 }, intArray);
+		Assert.assertArrayEquals(new int[]{1, 2, 3, 4, 5}, intArray);
 
 		intArray = StrUtil.splitToInt(str, ",");
-		Assert.assertArrayEquals(new int[] { 1, 2, 3, 4, 5 }, intArray);
+		Assert.assertArrayEquals(new int[]{1, 2, 3, 4, 5}, intArray);
 	}
 
 	@Test
@@ -103,8 +102,8 @@ public class StrUtilTest {
 		strip = StrUtil.strip(str, null, "567");
 		Assert.assertEquals("abcd123", strip);
 
-		Assert.assertEquals("", StrUtil.strip("a","a"));
+		Assert.assertEquals("", StrUtil.strip("a", "a"));
-		Assert.assertEquals("", StrUtil.strip("a","a", "b"));
+		Assert.assertEquals("", StrUtil.strip("a", "a", "b"));
 	}
 
 	@Test
@@ -190,7 +189,7 @@ public class StrUtilTest {
 	@Test
 	public void replaceTest4() {
 		String a = "1039";
-		String result = StrUtil.padPre(a,8,"0"); //在字符串1039前补4个0
+		String result = StrUtil.padPre(a, 8, "0"); //在字符串1039前补4个0
 		Assert.assertEquals("00001039", result);
 	}
 
@@ -347,25 +346,15 @@ public class StrUtilTest {
 
 	@Test
 	public void toUnderLineCaseTest() {
-		String str = "Table_Test_Of_day";
+		Dict.create()
-		String result = StrUtil.toUnderlineCase(str);
+				.set("Table_Test_Of_day", "table_test_of_day")
-		Assert.assertEquals("table_test_of_day", result);
+				.set("_Table_Test_Of_day_", "_table_test_of_day_")
-		
+				.set("_Table_Test_Of_DAY_", "_table_test_of_DAY_")
-		String str1 = "_Table_Test_Of_day_";
+				.set("_TableTestOfDAYtoday", "_table_test_of_DAY_today")
-		String result1 = StrUtil.toUnderlineCase(str1);
+				.set("HelloWorld_test", "hello_world_test")
-		Assert.assertEquals("_table_test_of_day_", result1);
+				.set("H2", "H2")
-		
+				.set("H#case", "H#case")
-		String str2 = "_Table_Test_Of_DAY_";
+				.forEach((key, value) -> Assert.assertEquals(value, StrUtil.toUnderlineCase(key)));
-		String result2 = StrUtil.toUnderlineCase(str2);
-		Assert.assertEquals("_table_test_of_DAY_", result2);
-		
-		String str3 = "_TableTestOfDAYtoday";
-		String result3 = StrUtil.toUnderlineCase(str3);
-		Assert.assertEquals("_table_test_of_DAY_today", result3);
-		
-		String str4 = "HelloWorld_test";
-		String result4 = StrUtil.toUnderlineCase(str4);
-		Assert.assertEquals("hello_world_test", result4);
 	}
 
 	@Test
@@ -421,13 +410,13 @@ public class StrUtilTest {
 
 	@Test
 	public void subBetweenAllTest() {
-		Assert.assertArrayEquals(new String[]{"yz","abc"},StrUtil.subBetweenAll("saho[yz]fdsadp[abc]a","[","]"));
+		Assert.assertArrayEquals(new String[]{"yz", "abc"}, StrUtil.subBetweenAll("saho[yz]fdsadp[abc]a", "[", "]"));
-		Assert.assertArrayEquals(new String[]{"abc"}, StrUtil.subBetweenAll("saho[yzfdsadp[abc]a]","[","]"));
+		Assert.assertArrayEquals(new String[]{"abc"}, StrUtil.subBetweenAll("saho[yzfdsadp[abc]a]", "[", "]"));
-		Assert.assertArrayEquals(new String[]{"abc", "abc"}, StrUtil.subBetweenAll("yabczyabcz","y","z"));
+		Assert.assertArrayEquals(new String[]{"abc", "abc"}, StrUtil.subBetweenAll("yabczyabcz", "y", "z"));
-		Assert.assertArrayEquals(new String[0], StrUtil.subBetweenAll(null,"y","z"));
+		Assert.assertArrayEquals(new String[0], StrUtil.subBetweenAll(null, "y", "z"));
-		Assert.assertArrayEquals(new String[0], StrUtil.subBetweenAll("","y","z"));
+		Assert.assertArrayEquals(new String[0], StrUtil.subBetweenAll("", "y", "z"));
-		Assert.assertArrayEquals(new String[0], StrUtil.subBetweenAll("abc",null,"z"));
+		Assert.assertArrayEquals(new String[0], StrUtil.subBetweenAll("abc", null, "z"));
-		Assert.assertArrayEquals(new String[0], StrUtil.subBetweenAll("abc","y",null));
+		Assert.assertArrayEquals(new String[0], StrUtil.subBetweenAll("abc", "y", null));
 	}
 
 	@Test
@@ -436,15 +425,15 @@ public class StrUtilTest {
 		String src1 = "/* \n* hutool  */  asdas  /* \n* hutool  */";
 		String src2 = "/ * hutool  */  asdas  / * hutool  */";
 
-		String[] results1 = StrUtil.subBetweenAll(src1,"/**","*/");
+		String[] results1 = StrUtil.subBetweenAll(src1, "/**", "*/");
 		Assert.assertEquals(0, results1.length);
 
-		String[] results2 = StrUtil.subBetweenAll(src2,"/*","*/");
+		String[] results2 = StrUtil.subBetweenAll(src2, "/*", "*/");
 		Assert.assertEquals(0, results2.length);
 	}
 
 	@Test
-	public void briefTest(){
+	public void briefTest() {
 		String str = RandomUtil.randomString(1000);
 		int maxLength = RandomUtil.randomInt(1000);
 		String brief = StrUtil.brief(str, maxLength);
@@ -460,7 +449,7 @@ public class StrUtilTest {
 	}
 
 	@Test
-	public void wrapAllTest(){
+	public void wrapAllTest() {
 		String[] strings = StrUtil.wrapAll("`", "`", StrUtil.splitToArray("1,2,3,4", ','));
 		Assert.assertEquals("[`1`, `2`, `3`, `4`]", StrUtil.utf8Str(strings));
 

hutool-json/src/test/java/cn/hutool/json/Issue1075Test.java

@@ -5,12 +5,23 @@ import org.junit.Assert;
 import org.junit.Test;
 
 public class Issue1075Test {
-	@Test
-	public void test() {
-		String s = "{\"f1\":\"f1\",\"F2\":\"f2\",\"fac\":\"fac\"}";
 
-		ObjA o2 = JSONUtil.parseObj(s, JSONConfig.create().setIgnoreCase(true)).toBean(ObjA.class);
+	final String jsonStr = "{\"f1\":\"f1\",\"f2\":\"f2\",\"fac\":\"fac\"}";
+
+	@Test
+	public void testToBean() {
+		// 在不忽略大小写的情况下，f2、fac都不匹配
+		ObjA o2 = JSONUtil.toBean(jsonStr, ObjA.class);
+		Assert.assertNull(o2.getFAC());
+		Assert.assertNull(o2.getF2());
+	}
+
+	@Test
+	public void testToBeanIgnoreCase() {
+		// 在忽略大小写的情况下，f2、fac都匹配
+		ObjA o2 = JSONUtil.parseObj(jsonStr, JSONConfig.create().setIgnoreCase(true)).toBean(ObjA.class);
 		Assert.assertEquals("fac", o2.getFAC());
+		Assert.assertEquals("f2", o2.getF2());
 	}
 
 	@Data