fix UrlQuery

hutool-core/src/main/java/cn/hutool/core/net/URLDecoder.java

@@ -67,10 +67,13 @@ public class URLDecoder implements Serializable {
 	 *
 	 * @param str           包含URL编码后的字符串
 	 * @param isPlusToSpace 是否+转换为空格
-	 * @param charset       编码
+	 * @param charset       编码，{@code null}表示不做编码
 	 * @return 解码后的字符串
 	 */
 	public static String decode(String str, Charset charset, boolean isPlusToSpace) {
+		if(null == charset){
+			return str;
+		}
 		return StrUtil.str(decode(StrUtil.bytes(str, charset), isPlusToSpace), charset);
 	}
 

hutool-core/src/main/java/cn/hutool/core/net/url/UrlQuery.java

@@ -6,9 +6,10 @@ import cn.hutool.core.collection.IterUtil;
 import cn.hutool.core.convert.Convert;
 import cn.hutool.core.map.MapUtil;
 import cn.hutool.core.map.TableMap;
+import cn.hutool.core.net.FormUrlencoded;
 import cn.hutool.core.net.RFC3986;
+import cn.hutool.core.net.URLDecoder;
 import cn.hutool.core.util.StrUtil;
-import cn.hutool.core.util.URLUtil;
 
 import java.nio.charset.Charset;
 import java.util.Iterator;
@@ -26,6 +27,10 @@ import java.util.Map;
 public class UrlQuery {
 
 	private final TableMap<CharSequence, CharSequence> query;
+	/**
+	 * 是否为x-www-form-urlencoded模式，此模式下空格会编码为'+'
+	 */
+	private final boolean isFormUrlEncoded;
 
 	/**
 	 * 构建UrlQuery
@@ -37,6 +42,17 @@ public class UrlQuery {
 		return new UrlQuery(queryMap);
 	}
 
+	/**
+	 * 构建UrlQuery
+	 *
+	 * @param queryMap         初始化的查询键值对
+	 * @param isFormUrlEncoded 是否为x-www-form-urlencoded模式，此模式下空格会编码为'+'
+	 * @return UrlQuery
+	 */
+	public static UrlQuery of(Map<? extends CharSequence, ?> queryMap, boolean isFormUrlEncoded) {
+		return new UrlQuery(queryMap, isFormUrlEncoded);
+	}
+
 	/**
 	 * 构建UrlQuery
 	 *
@@ -58,9 +74,21 @@ public class UrlQuery {
 	 * @since 5.5.8
 	 */
 	public static UrlQuery of(String queryStr, Charset charset, boolean autoRemovePath) {
-		final UrlQuery urlQuery = new UrlQuery();
+		return of(queryStr, charset, autoRemovePath, false);
-		urlQuery.parse(queryStr, charset, autoRemovePath);
+	}
-		return urlQuery;
+
+	/**
+	 * 构建UrlQuery
+	 *
+	 * @param queryStr         初始化的查询字符串
+	 * @param charset          decode用的编码，null表示不做decode
+	 * @param autoRemovePath   是否自动去除path部分，{@code true}则自动去除第一个?前的内容
+	 * @param isFormUrlEncoded 是否为x-www-form-urlencoded模式，此模式下空格会编码为'+'
+	 * @return UrlQuery
+	 * @since 5.7.16
+	 */
+	public static UrlQuery of(String queryStr, Charset charset, boolean autoRemovePath, boolean isFormUrlEncoded) {
+		return new UrlQuery(isFormUrlEncoded).parse(queryStr, charset, autoRemovePath);
 	}
 
 	/**
@@ -73,15 +101,37 @@ public class UrlQuery {
 	/**
 	 * 构造
 	 *
-	 * @param queryMap 初始化的查询键值对
+	 * @param isFormUrlEncoded 是否为x-www-form-urlencoded模式，此模式下空格会编码为'+'
+	 * @since 5.7.16
+	 */
+	public UrlQuery(boolean isFormUrlEncoded) {
+		this(null, isFormUrlEncoded);
+	}
+
+	/**
+	 * 构造
+	 *
+	 * @param queryMap         初始化的查询键值对
 	 */
 	public UrlQuery(Map<? extends CharSequence, ?> queryMap) {
+		this(queryMap, false);
+	}
+
+	/**
+	 * 构造
+	 *
+	 * @param queryMap         初始化的查询键值对
+	 * @param isFormUrlEncoded 是否为x-www-form-urlencoded模式，此模式下空格会编码为'+'
+	 * @since 5.7.16
+	 */
+	public UrlQuery(Map<? extends CharSequence, ?> queryMap, boolean isFormUrlEncoded) {
 		if (MapUtil.isNotEmpty(queryMap)) {
 			query = new TableMap<>(queryMap.size());
 			addAll(queryMap);
 		} else {
 			query = new TableMap<>(MapUtil.DEFAULT_INITIAL_CAPACITY);
 		}
+		this.isFormUrlEncoded = isFormUrlEncoded;
 	}
 
 	/**
@@ -182,6 +232,10 @@ public class UrlQuery {
 	 * @return URL查询字符串
 	 */
 	public String build(Charset charset) {
+		if (isFormUrlEncoded) {
+			return build(FormUrlencoded.ALL, FormUrlencoded.ALL, charset);
+		}
+
 		return build(RFC3986.QUERY_PARAM_NAME, RFC3986.QUERY_PARAM_VALUE, charset);
 	}
 
@@ -315,11 +369,11 @@ public class UrlQuery {
 	 */
 	private void addParam(String key, String value, Charset charset) {
 		if (null != key) {
-			final String actualKey = URLUtil.decode(key, charset);
+			final String actualKey = URLDecoder.decode(key, charset, isFormUrlEncoded);
-			this.query.put(actualKey, StrUtil.nullToEmpty(URLUtil.decode(value, charset)));
+			this.query.put(actualKey, StrUtil.nullToEmpty(URLDecoder.decode(value, charset, isFormUrlEncoded)));
 		} else if (null != value) {
 			// name为空，value作为name，value赋值null
-			this.query.put(URLUtil.decode(value, charset), null);
+			this.query.put(URLDecoder.decode(value, charset, isFormUrlEncoded), null);
 		}
 	}
 }

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

@@ -328,9 +328,6 @@ public class URLUtil extends URLEncodeUtil {
 	 * @since 4.4.1
 	 */
 	public static String decode(String content, Charset charset) {
-		if (null == charset) {
-			return content;
-		}
 		return URLDecoder.decode(content, charset);
 	}
 
@@ -345,9 +342,6 @@ public class URLUtil extends URLEncodeUtil {
 	 * @since 5.6.3
 	 */
 	public static String decode(String content, Charset charset, boolean isPlusToSpace) {
-		if (null == charset) {
-			return content;
-		}
 		return URLDecoder.decode(content, charset, isPlusToSpace);
 	}
 
@@ -361,7 +355,7 @@ public class URLUtil extends URLEncodeUtil {
 	 * @throws UtilException UnsupportedEncodingException
 	 */
 	public static String decode(String content, String charset) throws UtilException {
-		return decode(content, CharsetUtil.charset(charset));
+		return decode(content, StrUtil.isEmpty(charset) ? null : CharsetUtil.charset(charset));
 	}
 
 	/**

hutool-core/src/test/java/cn/hutool/core/net/UrlQueryTest.java

@@ -108,6 +108,14 @@ public class UrlQueryTest {
 		Assert.assertEquals("a+b=1+2", a);
 	}
 
+	@Test
+	public void parsePlusTest(){
+		// 根据RFC3986，在URL中，+是安全字符，即此符号不转义
+		final String a = UrlQuery.of("a+b=1+2", CharsetUtil.CHARSET_UTF_8)
+				.build(CharsetUtil.CHARSET_UTF_8);
+		Assert.assertEquals("a+b=1+2", a);
+	}
+
 	@Test
 	public void spaceTest(){
 		// 根据RFC3986，在URL中，空格编码为"%20"

hutool-http/src/main/java/cn/hutool/http/HttpRequest.java

@@ -10,7 +10,6 @@ import cn.hutool.core.io.resource.MultiFileResource;
 import cn.hutool.core.io.resource.Resource;
 import cn.hutool.core.lang.Assert;
 import cn.hutool.core.map.MapUtil;
-import cn.hutool.core.net.FormUrlencoded;
 import cn.hutool.core.net.SSLUtil;
 import cn.hutool.core.net.url.UrlBuilder;
 import cn.hutool.core.net.url.UrlQuery;
@@ -1229,8 +1228,7 @@ public class HttpRequest extends HttpBase<HttpRequest> {
 	 * @since 5.3.2
 	 */
 	private String getFormUrlEncoded() {
-		return UrlQuery.of(this.form)
+		return UrlQuery.of(this.form, true).build(this.charset);
-				.build(FormUrlencoded.ALL, FormUrlencoded.ALL, this.charset);
 	}
 
 	/**