diff --git
a/dubbo-common/src/main/java/org/apache/dubbo/common/utils/CompatibleTypeUtils.java
b/dubbo-common/src/main/java/org/apache/dubbo/common/utils/CompatibleTypeUtils.java
index de96eebda1..efc570fe92 100644
---
a/dubbo-common/src/main/java/org/apache/dubbo/common/utils/CompatibleTypeUtils.java
+++
b/dubbo-common/src/main/java/org/apache/dubbo/common/utils/CompatibleTypeUtils.java
@@ -104,15 +104,10 @@ public static Object compatibleTypeConvert(Object value,
Class<?> type) {
// Process string to char array for generic invoke
// See
// - https://github.com/apache/incubator-dubbo/issues/2003
- if (string == null) {
- return null;
- }
- else {
- int len = string.length();
- char[] chars = new char[len];
- string.getChars(0, len, chars, 0);
- return chars;
- }
+ int len = string.length();
+ char[] chars = new char[len];
+ string.getChars(0, len, chars, 0);
+ return chars;
}
} else if (value instanceof Number) {
Number number = (Number) value;
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