diff --git a/hutool-json/src/main/java/cn/hutool/json/JSONTokener.java b/hutool-json/src/main/java/cn/hutool/json/JSONTokener.java
index cb2e353fe..0cca017a5 100644
--- a/hutool-json/src/main/java/cn/hutool/json/JSONTokener.java
+++ b/hutool-json/src/main/java/cn/hutool/json/JSONTokener.java
@@ -9,29 +9,42 @@ import java.io.StringReader;
/**
* JSON解析器,用于将JSON字符串解析为JSONObject或者JSONArray
- *
+ *
* @author from JSON.org
*/
public class JSONTokener {
private long character;
- /** 是否结尾 End of stream */
+ /**
+ * 是否结尾 End of stream
+ */
private boolean eof;
- /** 在Reader的位置(解析到第几个字符) */
+ /**
+ * 在Reader的位置(解析到第几个字符)
+ */
private long index;
- /** 当前所在行 */
+ /**
+ * 当前所在行
+ */
private long line;
- /** 前一个字符 */
+ /**
+ * 前一个字符
+ */
private char previous;
- /** 是否使用前一个字符 */
+ /**
+ * 是否使用前一个字符
+ */
private boolean usePrevious;
- /** 源 */
+ /**
+ * 源
+ */
private Reader reader;
// ------------------------------------------------------------------------------------ Constructor start
+
/**
* 从Reader中构建
- *
+ *
* @param reader Reader
*/
public JSONTokener(Reader reader) {
@@ -46,7 +59,7 @@ public class JSONTokener {
/**
* 从InputStream中构建
- *
+ *
* @param inputStream InputStream
*/
public JSONTokener(InputStream inputStream) throws JSONException {
@@ -55,7 +68,7 @@ public class JSONTokener {
/**
* 从字符串中构建
- *
+ *
* @param s JSON字符串
*/
public JSONTokener(String s) {
@@ -85,7 +98,7 @@ public class JSONTokener {
/**
* 源字符串是否有更多的字符
- *
+ *
* @return 如果未达到结尾返回true,否则false
*/
public boolean more() throws JSONException {
@@ -99,7 +112,7 @@ public class JSONTokener {
/**
* 获得源字符串中的下一个字符
- *
+ *
* @return 下一个字符, or 0 if past the end of the source string.
* @throws JSONException JSON异常,包装IO异常
*/
@@ -136,7 +149,7 @@ public class JSONTokener {
/**
* 读取下一个字符,并比对是否和指定字符匹配
- *
+ *
* @param c 被匹配的字符
* @return The character 匹配到的字符
* @throws JSONException 如果不匹配抛出此异常
@@ -175,9 +188,9 @@ public class JSONTokener {
/**
* 获得下一个字符,跳过空白符
- *
- * @throws JSONException 获得下一个字符时抛出的异常
+ *
* @return 获得的字符,0表示没有更多的字符
+ * @throws JSONException 获得下一个字符时抛出的异常
*/
public char nextClean() throws JSONException {
char c;
@@ -192,7 +205,7 @@ public class JSONTokener {
/**
* 返回当前位置到指定引号前的所有字符,反斜杠的转义符也会被处理。
* 标准的JSON是不允许使用单引号包含字符串的,但是此实现允许。
- *
+ *
* @param quote 字符引号, 包括 "
(双引号) 或 '
(单引号)。
* @return 截止到引号前的字符串
* @throws JSONException 出现无结束的字符串时抛出此异常
@@ -200,49 +213,49 @@ public class JSONTokener {
public String nextString(char quote) throws JSONException {
char c;
StringBuilder sb = new StringBuilder();
- for (;;) {
+ while (true) {
c = this.next();
switch (c) {
- case 0:
- case '\n':
- case '\r':
- throw this.syntaxError("Unterminated string");
- case '\\':// 转义符
- c = this.next();
- switch (c) {
- case 'b':
- sb.append('\b');
- break;
- case 't':
- sb.append('\t');
- break;
- case 'n':
- sb.append('\n');
- break;
- case 'f':
- sb.append('\f');
- break;
- case 'r':
- sb.append('\r');
- break;
- case 'u':// Unicode符
- sb.append((char) Integer.parseInt(this.next(4), 16));
- break;
- case '"':
- case '\'':
- case '\\':
- case '/':
- sb.append(c);
+ case 0:
+ case '\n':
+ case '\r':
+ throw this.syntaxError("Unterminated string");
+ case '\\':// 转义符
+ c = this.next();
+ switch (c) {
+ case 'b':
+ sb.append('\b');
+ break;
+ case 't':
+ sb.append('\t');
+ break;
+ case 'n':
+ sb.append('\n');
+ break;
+ case 'f':
+ sb.append('\f');
+ break;
+ case 'r':
+ sb.append('\r');
+ break;
+ case 'u':// Unicode符
+ sb.append((char) Integer.parseInt(this.next(4), 16));
+ break;
+ case '"':
+ case '\'':
+ case '\\':
+ case '/':
+ sb.append(c);
+ break;
+ default:
+ throw this.syntaxError("Illegal escape.");
+ }
break;
default:
- throw this.syntaxError("Illegal escape.");
- }
- break;
- default:
- if (c == quote) {
- return sb.toString();
- }
- sb.append(c);
+ if (c == quote) {
+ return sb.toString();
+ }
+ sb.append(c);
}
}
}
@@ -250,13 +263,13 @@ public class JSONTokener {
/**
* Get the text up but not including the specified character or the end of line, whichever comes first.
* 获得从当前位置直到分隔符(不包括分隔符)或行尾的的所有字符。
- *
+ *
* @param delimiter 分隔符
* @return 字符串
*/
public String nextTo(char delimiter) throws JSONException {
StringBuilder sb = new StringBuilder();
- for (;;) {
+ for (; ; ) {
char c = this.next();
if (c == delimiter || c == 0 || c == '\n' || c == '\r') {
if (c != 0) {
@@ -270,14 +283,14 @@ public class JSONTokener {
/**
* Get the text up but not including one of the specified delimiter characters or the end of line, whichever comes first.
- *
+ *
* @param delimiters A set of delimiter characters.
* @return A string, trimmed.
*/
public String nextTo(String delimiters) throws JSONException {
char c;
StringBuilder sb = new StringBuilder();
- for (;;) {
+ for (; ; ) {
c = this.next();
if (delimiters.indexOf(c) >= 0 || c == 0 || c == '\n' || c == '\r') {
if (c != 0) {
@@ -291,29 +304,28 @@ public class JSONTokener {
/**
* 获得下一个值,值类型可以是Boolean, Double, Integer, JSONArray, JSONObject, Long, or String, or the JSONObject.NULL
- *
- * @throws JSONException 语法错误
*
* @return Boolean, Double, Integer, JSONArray, JSONObject, Long, or String, or the JSONObject.NULL
+ * @throws JSONException 语法错误
*/
public Object nextValue() throws JSONException {
char c = this.nextClean();
String string;
switch (c) {
- case '"':
- case '\'':
- return this.nextString(c);
- case '{':
- this.back();
- return new JSONObject(this);
- case '[':
- this.back();
- return new JSONArray(this);
+ case '"':
+ case '\'':
+ return this.nextString(c);
+ case '{':
+ this.back();
+ return new JSONObject(this);
+ case '[':
+ this.back();
+ return new JSONArray(this);
}
/*
- * Handle unquoted text. This could be the values true, false, or null, or it can be a number.
+ * Handle unquoted text. This could be the values true, false, or null, or it can be a number.
* An implementation (such as this one) is allowed to also accept non-standard forms. Accumulate
* characters until we reach the end of the text or a formatting character.
*/
@@ -334,7 +346,7 @@ public class JSONTokener {
/**
* Skip characters until the next character is the requested character. If the requested character is not found, no characters are skipped. 在遇到指定字符前,跳过其它字符。如果字符未找到,则不跳过任何字符。
- *
+ *
* @param to 需要定位的字符
* @return 定位的字符,如果字符未找到返回0
*/
@@ -375,7 +387,7 @@ public class JSONTokener {
/**
* 转为 {@link JSONArray}
- *
+ *
* @return {@link JSONArray}
*/
public JSONArray toJSONArray() {
@@ -394,16 +406,16 @@ public class JSONTokener {
jsonArray.add(this.nextValue());
}
switch (this.nextClean()) {
- case ',':
- if (this.nextClean() == ']') {
+ case ',':
+ if (this.nextClean() == ']') {
+ return jsonArray;
+ }
+ this.back();
+ break;
+ case ']':
return jsonArray;
- }
- this.back();
- break;
- case ']':
- return jsonArray;
- default:
- throw this.syntaxError("Expected a ',' or ']'");
+ default:
+ throw this.syntaxError("Expected a ',' or ']'");
}
}
}
diff --git a/hutool-json/src/test/java/cn/hutool/json/JSONUtilTest.java b/hutool-json/src/test/java/cn/hutool/json/JSONUtilTest.java
index 8d44d0a84..773aa7aa5 100644
--- a/hutool-json/src/test/java/cn/hutool/json/JSONUtilTest.java
+++ b/hutool-json/src/test/java/cn/hutool/json/JSONUtilTest.java
@@ -4,6 +4,7 @@ import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
+import cn.hutool.core.lang.Console;
import org.junit.Assert;
import org.junit.Test;
@@ -16,6 +17,15 @@ import cn.hutool.json.test.bean.UserC;
public class JSONUtilTest {
+ /**
+ * 出现语法错误时报错,检查解析\x字符时是否会导致死循环异常
+ */
+ @Test(expected = JSONException.class)
+ public void parseTest(){
+ JSONArray jsonArray = JSONUtil.parseArray("[{\"a\":\"a\\x]");
+ Console.log(jsonArray);
+ }
+
@Test
public void toJsonStrTest() {
UserA a1 = new UserA();
@@ -38,11 +48,11 @@ public class JSONUtilTest {
@Test
public void toJsonStrTest2() {
- Map model = new HashMap();
+ Map model = new HashMap<>();
model.put("mobile", "17610836523");
model.put("type", 1);
- Map data = new HashMap();
+ Map data = new HashMap<>();
data.put("model", model);
data.put("model2", model);