support config default classloader

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

@@ -283,7 +283,7 @@ public class DefaultJSONParser extends AbstractJSONParser implements Closeable {
 
                 if (key == JSON.DEFAULT_TYPE_KEY && !isEnabled(Feature.DisableSpecialKeyDetect)) {
                     String typeName = lexer.scanSymbol(symbolTable, '"');
-                    Class<?> clazz = TypeUtils.loadClass(typeName);
+                    Class<?> clazz = TypeUtils.loadClass(typeName, config.getDefaultClassLoader());
 
                     if (clazz == null) {
                         object.put(JSON.DEFAULT_TYPE_KEY, typeName);

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

@@ -151,6 +151,8 @@ public class ParserConfig {
     private boolean                                         asmEnable        = !ASMUtils.isAndroid();
 
     protected final SymbolTable                             symbolTable      = new SymbolTable();
+    
+    protected ClassLoader                                   defaultClassLoader;
 
     protected ASMDeserializerFactory                        asmFactory;
     
@@ -668,4 +670,11 @@ public class ParserConfig {
         }
     }
 
+    public ClassLoader getDefaultClassLoader() {
+        return defaultClassLoader;
+    }
+    
+    public void setDefaultClassLoader(ClassLoader defaultClassLoader) {
+        this.defaultClassLoader = defaultClassLoader;
+    }
 }

src/main/java/com/alibaba/fastjson/parser/deserializer/AbstractDateDeserializer.java

@@ -48,7 +48,7 @@ public abstract class AbstractDateDeserializer implements ObjectDeserializer {
                     parser.accept(JSONToken.COLON);
                     
                     String typeName = lexer.stringVal();
-                    Class<?> type = TypeUtils.loadClass(typeName);
+                    Class<?> type = TypeUtils.loadClass(typeName, parser.getConfig().getDefaultClassLoader());
                     if (type != null) {
                         clazz = type;
                     }

src/main/java/com/alibaba/fastjson/parser/deserializer/ClassDerializer.java

@@ -30,7 +30,7 @@ public class ClassDerializer implements ObjectDeserializer {
         String className = lexer.stringVal();
         lexer.nextToken(JSONToken.COMMA);
 
-        return (T) TypeUtils.loadClass(className);
+        return (T) TypeUtils.loadClass(className, parser.getConfig().getDefaultClassLoader());
     }
 
     public int getFastMatchToken() {

src/main/java/com/alibaba/fastjson/parser/deserializer/JavaBeanDeserializer.java

@@ -312,7 +312,7 @@ public class JavaBeanDeserializer implements ObjectDeserializer {
                             continue;
                         }
 
-                        Class<?> userType = TypeUtils.loadClass(typeName);
+                        Class<?> userType = TypeUtils.loadClass(typeName, parser.getConfig().getDefaultClassLoader());
                         ObjectDeserializer deserizer = parser.getConfig().getDeserializer(userType);
                         return (T) deserizer.deserialze(parser, userType, fieldName);
                     } else {

src/main/java/com/alibaba/fastjson/parser/deserializer/MapDeserializer.java

@@ -130,7 +130,7 @@ public class MapDeserializer implements ObjectDeserializer {
 
                 if (key == JSON.DEFAULT_TYPE_KEY && !parser.isEnabled(Feature.DisableSpecialKeyDetect)) {
                     String typeName = lexer.scanSymbol(parser.getSymbolTable(), '"');
-                    Class<?> clazz = TypeUtils.loadClass(typeName);
+                    Class<?> clazz = TypeUtils.loadClass(typeName, parser.getConfig().getDefaultClassLoader());
 
                     if (Map.class.isAssignableFrom(clazz) ) {
                         lexer.nextToken(JSONToken.COMMA);

src/main/java/com/alibaba/fastjson/parser/deserializer/ThrowableDeserializer.java

@@ -72,7 +72,7 @@ public class ThrowableDeserializer extends JavaBeanDeserializer {
             if (JSON.DEFAULT_TYPE_KEY.equals(key)) {
                 if (lexer.token() == JSONToken.LITERAL_STRING) {
                     String exClassName = lexer.stringVal();
-                    exClass = TypeUtils.loadClass(exClassName);
+                    exClass = TypeUtils.loadClass(exClassName, parser.getConfig().getDefaultClassLoader());
                 } else {
                     throw new JSONException("syntax error");
                 }

src/main/java/com/alibaba/fastjson/util/TypeUtils.java

@@ -971,6 +971,10 @@ public class TypeUtils {
     }
 
     public static Class<?> loadClass(String className) {
+        return loadClass(className, null);
+    }
+
+    public static Class<?> loadClass(String className, ClassLoader classLoader) {
         if (className == null || className.length() == 0) {
             return null;
         }
@@ -982,20 +986,33 @@ public class TypeUtils {
         }
 
         if (className.charAt(0) == '[') {
-            Class<?> componentType = loadClass(className.substring(1));
+            Class<?> componentType = loadClass(className.substring(1), classLoader);
             return Array.newInstance(componentType, 0).getClass();
         }
 
         if (className.startsWith("L") && className.endsWith(";")) {
             String newClassName = className.substring(1, className.length() - 1);
-            return loadClass(newClassName);
+            return loadClass(newClassName, classLoader);
+        }
+        
+        try {
+            if (classLoader != null) {
+                clazz = classLoader.loadClass(className);
+
+                addClassMapping(className, clazz);
+
+                return clazz;
+            }
+        } catch (Throwable e) {
+            e.printStackTrace();
+            // skip
         }
 
         try {
-            ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
+            ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
 
-            if (classLoader != null) {
-                clazz = classLoader.loadClass(className);
+            if (contextClassLoader != null) {
+                clazz = contextClassLoader.loadClass(className);
 
                 addClassMapping(className, clazz);