improved date parse support, like ' +800'

pom.xml

@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.alibaba</groupId>
 	<artifactId>fastjson</artifactId>
-	<version>1.2.55_preview_01</version>
+	<version>1.2.55_preview_05</version>
 
 	<packaging>jar</packaging>
 	<name>fastjson</name>
@@ -464,14 +464,14 @@
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>kotlin-stdlib</artifactId>
-            <version>1.1.3-2</version>
+            <version>1.1.51</version>
             <scope>test</scope>
         </dependency>
 
 		<dependency>
 			<groupId>org.jetbrains.kotlin</groupId>
 			<artifactId>kotlin-reflect</artifactId>
-			<version>1.1.3-2</version>
+			<version>1.1.51</version>
 			<scope>test</scope>
 		</dependency>
 

src/main/java/com/alibaba/fastjson/parser/JSONScanner.java

@@ -587,6 +587,12 @@ public final class JSONScanner extends JSONLexerBase {
 
         int timzeZoneLength = 0;
         char timeZoneFlag = charAt(bp + date_len + 10 + millisLen);
+
+        if (timeZoneFlag == ' ') {
+            millisLen++;
+            timeZoneFlag = charAt(bp + date_len + 10 + millisLen);
+        }
+
         if (timeZoneFlag == '+' || timeZoneFlag == '-') {
             char t0 = charAt(bp + date_len + 10 + millisLen + 1);
             if (t0 < '0' || t0 > '1') {

src/test/java/com/alibaba/json/bvt/date/DateTest.java

@@ -32,4 +32,9 @@ public class DateTest extends TestCase {
                             JSON.toJSONStringWithDateFormat(date, "yyyy-MM-dd HH:mm:ss.SSS",
                                                             SerializerFeature.UseSingleQuotes));
     }
+
+    public void test_parse() throws Exception {
+        Date date = JSON.parseObject("\"2018-10-12 09:48:22 +0800\"", Date.class);
+        assertEquals(1539308902000L, date.getTime());
+    }
 }