fix config

CHANGELOG.md

@@ -9,6 +9,7 @@
 * 【core   】     增加NamingCase类
 * 【core   】     ListUtil增加page方法重载（pr#1761@Github）
 * 【crypto 】     增加ASN1Util
+* 【core   】     CsvConfig改为泛型形式
 
 ### 🐞Bug修复
 

hutool-core/src/main/java/cn/hutool/core/text/csv/CsvConfig.java

@@ -7,10 +7,11 @@ import java.io.Serializable;
 /**
  * CSV基础配置项，此配置项可用于读取和写出CSV，定义了包括字段分隔符、文本包装符等符号
  *
+ * @param <T> 继承子类类型，用于this返回
  * @author looly
  * @since 4.0.5
  */
-public class CsvConfig implements Serializable {
+public class CsvConfig<T extends CsvConfig<?>> implements Serializable {
 	private static final long serialVersionUID = -8069578249066158459L;
 
 	/**
@@ -32,9 +33,10 @@ public class CsvConfig implements Serializable {
 	 * @param fieldSeparator 字段分隔符，默认逗号','
 	 * @return this
 	 */
-	public CsvConfig setFieldSeparator(final char fieldSeparator) {
+	@SuppressWarnings("unchecked")
+	public T setFieldSeparator(final char fieldSeparator) {
 		this.fieldSeparator = fieldSeparator;
-		return this;
+		return (T) this;
 	}
 
 	/**
@@ -43,9 +45,10 @@ public class CsvConfig implements Serializable {
 	 * @param textDelimiter 文本分隔符，文本包装符，默认双引号'"'
 	 * @return this
 	 */
-	public CsvConfig setTextDelimiter(char textDelimiter) {
+	@SuppressWarnings("unchecked")
+	public T setTextDelimiter(char textDelimiter) {
 		this.textDelimiter = textDelimiter;
-		return this;
+		return (T) this;
 	}
 
 	/**
@@ -55,8 +58,9 @@ public class CsvConfig implements Serializable {
 	 * @return this
 	 * @since 5.5.7
 	 */
-	public CsvConfig setCommentCharacter(char commentCharacter) {
+	@SuppressWarnings("unchecked")
+	public T setCommentCharacter(char commentCharacter) {
 		this.commentCharacter = commentCharacter;
-		return this;
+		return (T) this;
 	}
 }

hutool-core/src/main/java/cn/hutool/core/text/csv/CsvReadConfig.java

@@ -8,7 +8,7 @@ import java.io.Serializable;
  * @author looly
  *
  */
-public class CsvReadConfig extends CsvConfig implements Serializable {
+public class CsvReadConfig extends CsvConfig<CsvReadConfig> implements Serializable {
 	private static final long serialVersionUID = 5396453565371560052L;
 
 	/** 是否首行做为标题行，默认false */

hutool-core/src/main/java/cn/hutool/core/text/csv/CsvWriteConfig.java

@@ -9,7 +9,7 @@ import java.io.Serializable;
  *
  * @author looly
  */
-public class CsvWriteConfig extends CsvConfig implements Serializable {
+public class CsvWriteConfig extends CsvConfig<CsvWriteConfig> implements Serializable {
 	private static final long serialVersionUID = 5396453565371560052L;
 
 	/**

hutool-core/src/test/java/cn/hutool/core/text/csv/CsvReaderTest.java

@@ -145,4 +145,17 @@ public class CsvReaderTest {
 		Assert.assertEquals(6, data.getRow(1).getOriginalLineNumber());
 		Assert.assertEquals("a,s,d,f", CollUtil.join(data.getRow(1), ","));
 	}
+
+	@Test
+	public void customConfigTest(){
+		final CsvReader reader = CsvUtil.getReader(
+				CsvReadConfig.defaultConfig()
+						.setTextDelimiter('\'')
+						.setFieldSeparator(';'));
+		final CsvData csvRows = reader.readFromStr("123;456;'789;0'abc;");
+		final CsvRow row = csvRows.getRow(0);
+		Assert.assertEquals("123", row.get(0));
+		Assert.assertEquals("456", row.get(1));
+		Assert.assertEquals("'789;0'abc", row.get(2));
+	}
 }